Binaries with an RR Lyrae Component

Candidates for Binaries with an RR Lyrae Component

(RRLyrBinCan database)

Jiří Liška & Marek Skarka

Introduction

This web page provides a regularly-updated list of the binary candidates including basic information, important comments, and links to the corresponding publications.

The RRLyrBinCan database currently contains 106 candidates. Is any binary system (candidate) with an RR Lyrae component missing?

Please, let us know (Jiri Liska, e-mail: jiriliska@post.cz, Marek Skarka, e-mail: marek.skarka@csfk.mta.hu). The last update: May 07, 2019.

Acknowledgement

This work was supported by grants MUNI/A/1110/2014 and LH14300. This research has made use of the International Variable Star Index (VSX) database, operated at AAVSO, Cambridge, Massachusetts, USA. This research has made use of NASA's Astrophysics Data System. This research has made use of the SIMBAD database and VizieR catalogue access tool, operated at CDS, Strasbourg, France. This research has made use of GEOS RR Lyr database.

If this list helps you with your research, please cite the paper containing an overview, summary and official introduction of RRLyrBinCan database: Liska, Skarka, Zejda, Mikulasek & de Villiers (2016), 2016MNRAS.459.4360L, version of database from 2016, May 5 is in CDS. The RRLyrBinCan database is also introduced in Liska & Skarka (2016), 2016CoKon.105..209L and our poster Liska & Skarka (2015).

Description of the tables

The tables are sorted according to Right ascension

Name of the object:   identification of a star in the GCVS or in other catalogues, symbol "*" marks our comments under the main table
Coordinates:   RA [hh mm ss.ss] DEC [°° '' ""."], J2000.0, adopted from the VSX, or from OGLE catalogues
Mag. range:   Magnitude in maximum - Magnitude in minimum or mean magnitude (amplitude) and passband, adopted from the VSX, or mean magnitude from OGLE catalogues
Blazhko:  B - Blazhko modulation reported (all references on the Blazhko effect are under the both tables), B? - possible Blazhko, "-" - Blazhko was not detected
Type:   type of RR Lyrae star (RRab, RRc, other types were not reported as candidate stars)
Orbital period:   reported orbital period of a particular binary system in years or days, "-" symbol means "not specified"
Method(s):   LiTE - Light Time Effect is apparent in O-C diagram, LiTEM - LiTE with available Model, ED - Eclipse(s) Detected, EDM - ED with available Model, ELL - ELLipsoidal variability detected, RV - systemic shifts in Radial Velocity detected, RVM - RV with available Model, COL - systematic COLour discrepancy in comparison with other RR Lyrae stars, SPD - SPectroscopic Discrepancy in comparison with other RR Lyrae stars, VBR - Visual Binary Resolved
Author(s):   name(s) of the main authors of the paper and year of the publication
Comments:   important informations, BEP = Binary Evolution Pulsator (Pietrzynski et al. 2012) - a new class of pulsating stars (object which mimics an RR Lyrae star, but has completely different internal structure and evolution history), CEMP = Carbon-Enhanced Metal-Poor RR Lyrae Star

List of candidates

Name of the object	Coordinates	Mag. range	Blazhko	Type	Orbital period	Method(s)	Author(s)	Comments
RU Scl	00 02 48.11 -24 56 43.1	9.543 - 10.749 V	B	RRab	35.7 yr	LiTEM	Li et al. (2018a)
RY Psc	00 11 41.10 -01 44 55.3	11.82 - 12.72 V	B	RRab	-	LiTE	Le Borgne et al. (2007)
RY Psc	00 11 41.10 -01 44 55.3	11.82 - 12.72 V	B	RRab	65.8 yr	LiTEM	Li et al. (2018a)
UY Scl	00 14 45.76 -39 14 35.6	11.6 - 12.4 V	-	RR?	-	VBRM	Kervella et al. (2019a)	Type EW in VSX
V0363 Cas	00 15 14.33 +60 20 25.7	10.38 - 10.77 R1	-	RRab	-	VBRM	Kervella et al. (2019a)	type DCEPS(B) in VSX
OV And	00 20 44.86 +40 49 41.8	10.90 - 11.26 R1	B?	RRab	-	VBR	Kervella et al. (2019b)	Tight, high probability bound companion
XX And	01 17 27.41 +38 57 02.0	10.08 - 11.13 V	B?	RRab	60.9 yr	LiTEM	Li et al. (2018a)
XX And	01 17 27.41 +38 57 02.0	10.08 - 11.13 V	B?	RRab	-	VBRM	Kervella et al. (2019a)
CI And	01 55 08.29 +43 45 56.5	11.76 - 12.66 V	-	RRab	-	RV	Fernley & Barnes (1997)
RW Ari	02 16 03.72 +17 31 58.9	12.12 - 12.60 V	B?	RRc	3.1754 d	ED	Wisniewski (1971)	in 3 nights fainter (2x0.6 mag, 1x0.1 mag)
					-	RV	Abt & Wisniewski (1972)	only two RV values
					-	ED	Woodward (1972)	depression with 0.2 mag in data from Detre (1937)
					-	ED	Sidorov (1978)	depression in data from Detre (1937)
					4.639094 d	ED	Dahm (1992)	other eclipses and brightening in the curves?
					-	ED	Liska et al. (2016c)	strange behaviour in data from Bookmeyer et al. (1977)
					-	ED	Odell & Sreedhar (2016)	no-eclipse detected, RVs are normal - probably no binary system
RZ Cet	02 28 32.44 -08 21 30.1	11.245 - 12.240 V	B?	RRab	12500 d	LiTE	Le Borgne et al. (2007)
					75.4 yr	LiTEM	Liska et al. (2016b)
					-	ED	Liska et al. (2016c)	0.4 mag depression in data from Bookmeyer et al. (1977)
X Ari	03 08 30.88 +10 26 45.2	9.036 - 9.966 V	-	RRab	-	LiTE	Le Borgne et al. (2007)
SV Eri	03 11 52.11 -11 21 14.1	9.56 - 10.23 V	-	RRab	33.1 yr	LiTEM	Li et al. (2018a)
EZ Cep	03 58 05.41 +81 14 23.0	12.19 - 13.00 R1	-	RRab	-	VBRM	Kervella et al. (2019a)
OGLE-LMC-RRLYR-03541	05 02 17.37 -68 51 24.3	18.932 V	-	RRab	16.229 d	ED	Soszynski et al. (2009)	in LMC - high possibility of blend, BEP?
OGLE-LMC-RRLYR-03541	05 02 17.37 -68 51 24.3	18.932 V	-	RRab	16.2287 d	ED	Soszynski et al. (2016)	in LMC - high possibility of blend, BEP?
BE Dor	05 09 18.91 -69 50 14.5	15.231 V	-	RRc	2900 d	LiTEM	Derekas et al. (2004)	= MACHO* J050918.712-695015.31 = OGLE-LMC-RRLYR-06002
OGLE-LMC-RRLYR-30844	05 16 28.48 -72 44 24.5	19.270 V	-	RRab	1.480246 d	ED	Soszynski et al. (2016)	in LMC - high possibility of blend, BEP?
RR Gem	07 21 33.53 +30 52 59.5	10.62 - 11.99 V	B	RRab	25600 d	LiTE	Firmanyuk (1976)
V0764 Mon	07 37 43.20 -07 43 38.0	7.13 - 7.2 Hp	-	RRc	-	VBRM	Kervella et al. (2019a)
UY Cam	07 58 58.88 +72 47 15.4	11.33 - 11.66 V	-	RRc	65.7 yr	LiTEM	Li et al. (2018b)	Could be also DSCT?
SS Cnc	08 06 25.59 +23 15 05.7	11.49 - 12.72 V	B	RRab	98.58 yr	LiTE	Elmasli et al. (2006)
XX Hya	09 09 49.48 -15 35 58.7	11.353 - 12.505 V	-	RRab	-	RV	Fernley & Barnes (1997)
XX Hya	09 09 49.48 -15 35 58.7	11.353 - 12.505 V	-	RRab	-	RV	Solano et al. (1997)
RW Cnc	09 19 06.04 +29 03 55.7	10.7 - 12.6 pg	B	RRab	-	LiTE	Le Borgne et al. (2007)
RR Leo	10 07 43.38 +23 59 30.2	9.921 - 11.254 V	-	RRab	11300 d	LiTE	Szeidl, Olah & Mizser (1986)
RR Leo	10 07 43.38 +23 59 30.2	9.921 - 11.254 V	-	RRab	-	VBR	Kervella et al. (2019b)	Tight, high probability bound system
IV Leo	10 58 12.57 -00 05 40.4	15.4 - 15.8 V	-	RRab	-	SPD	Kennedy et al. (2014)	CEMP
TU UMa	11 29 48.49 +30 04 02.4	9.26 - 10.24 V	-	RRab	8400 d	LiTE	Szeidl, Olah & Mizser (1986)
					7374.5 d	RVM+LiTEM	Saha & White (1990) + Erratum
					8800 d	LiTEM	Kiss et al. (1995)
					-	RV	Fernley & Barnes (1997)
					-	RV	Solano et al. (1997)
					7399 d - 8812 d	RVM+LiTEM	Wade et al. (1999)
					23.27 yr \| 23.30 yr	RVM+LiTEM	Liska et al. (2016a)
SS Leo	11 33 54.49 -00 02 00.0	10.420 - 11.584 V	-	RRab	110.7 yr	LiTEM	Liska et al. (2016b)
LO Leo	11 35 22.75 -00 53 42.7	14.8 - 15.9 V	-	RRab	-	SPD	Kennedy et al. (2014)	CEMP
LP Leo	11 36 39.79 -01 25 16.6	16.5 - 17.0 V	-	RRab	-	SPD	Kennedy et al. (2014)	CEMP
SU Dra	11 37 56.61 +67 19 47.0	9.18 - 10.27 V	-	RRab	-	LiTE	Le Borgne et al. (2007)
SU Dra	11 37 56.61 +67 19 47.0	9.18 - 10.27 V	-	RRab	70.7 yr	LiTEM	Liska et al. (2016b)
BX Leo	11 38 02.06 +16 32 36.2	11.0 - 11.7 pg	-	RRc	-	RV	Solano et al. (1997)
ST Leo	11 38 32.68 +10 33 41.7	10.795 - 12.110 V	-	RRab	-	RV	Fernley & Barnes (1997)
V0370 Vir	12 06 04.13 -02 12 57.4	14.7 - 15.6 V	-	RRab	-	SPD	Kennedy et al. (2014)	CEMP
UU Vir	12 08 35.07 -00 27 24.3	9.954 - 11.106 V	-	RRab	-	VBRM	Kervella et al. (2019a)
TU Com	12 13 46.96 +30 59 06.6	13.901 (0.85) CV	B	RRab	1676 d	LITEM	de Ponthiere et al. (2016)
S Com	12 32 45.63 +27 01 45.4	10.88 - 12.12 V	-	RRab	-	LiTE	Le Borgne et al. (2007)
S Com	12 32 45.63 +27 01 45.4	10.88 - 12.12 V	-	RRab	90.1 yr \| 105.8 yr	LiTEM	Liska et al. (2016b)
V0408 Vir	12 40 03.53 -00 04 09.6	16.5 - 17.2 V	-	RRab	-	SPD	Kennedy et al. (2014)	CEMP
Z CVn	12 49 45.42 +43 46 25.6	11.46 - 12.36 V	B	RRab	78.3 yr	LiTEM	Skarka et al. (2018a)	large O-C amplitude, no RV shifts, probably false candidate
						LiTE	Skarka et al. (2018b)
						LiTE	Skarka et al. (2018c)
ZZ Vir	13 23 38.62 -04 21 41.7	14.041 (0.73) CV	-	RRab	-	SPD	Kennedy et al. (2014)	CEMP
RV UMa	13 33 18.09 +53 59 14.6	9.81 - 11.3 V	B	RRab	66.93 yr	LiTEM	Liska et al. (2016b)
WY Vir	13 35 16.14 -06 58 22.6	13.457 (0.96) CV	-	RRab	-	SPD	Kennedy et al. (2014)	CEMP
BB Vir	13 51 40.78 +06 25 51.4	10.732 - 11.450 V	B?	RRab	-	COL	Kinman & Carretta (1992)
					-	COL	Fernley (1993)
					92.7 yr	LiTEM	Liska et al. (2016b)
RU CVn	13 59 33.28 +31 39 04.3	11.36 - 12.48 V	-	RRab	60000 yr	LiTE	Husar (2003)	orbital period in days?
RU CVn	13 59 33.28 +31 39 04.3	11.36 - 12.48 V	-	RRab	101.6 yr	LiTEM	Liska et al. (2016b)
ST Vir	14 27 39.08 -00 54 05.8	10.838 - 12.154 V	B	RRab	-	LiTE	Li et al. (2018a)
RS Boo	14 33 33.21 +31 45 16.6	9.69 - 10.84 V	B	RRab	-	COL	Kanyo (1986)
					-	LiTE	Le Borgne et al. (2007)
					76.7 yr \| 147 yr	LiTEM	Liska et al. (2016b)
AE Boo	14 47 35.27 +16 50 43.5	10.44 - 10.88 V	-	RRc	-	VBRM	Kervella et al. (2019a)
TY Aps	14 48 50.01 -71 19 41.9	11.200 - 12.403 V	B	RRab	-	RV	Solano et al. (1997)
V80 UMi	15 09 40.5 +67 19 29	19.20 - 20.25 pg	-	RRab	2.01652 d \| 2.07132 d	EDM	Kholopov (1971)	object in Ursa Minor Dwarf galaxy, coordinates and magnitudes we only estimated from map an original measurements
AR Ser	15 33 30.82 +02 46 37.9	11.597 - 12.199 V	B	RRab	-	VBRM	Kervella et al. (2019a)
AT Ser	15 55 40.44 +07 59 18.7	11.013 - 11.890 V	-	RRab	85.6 yr	LiTEM	Liska et al. (2016b)
AR Her	16 00 32.23 +46 55 25.7	10.59 - 11.63 V	B	RRab	-	COL	Kinman & Carretta (1992)
AR Her	16 00 32.23 +46 55 25.7	10.59 - 11.63 V	B	RRab	34.2 yr	LiTEM	Li et al. (2018a)
RV CrB	16 19 25.85 +29 42 47.6	11.14 - 11.7 V	B?	RRc	18400 d	LiTE	Firmanyuk (1976)
V0893 Her	16 20 04.08 +45 13 00.0	9.2 - 9.38 Hp	-	RR:	-	VBR	Kervella et al. (2019b)	High probability bound, slight PM difference
VX Her	16 30 40.73 +18 22 00.2	9.913 - 11.177 V	B?	RRab	-	ED	Fitch, Wisniewski & Johnson (1966)	1 strange night - 0.7 mag fainter (V)
					83.0 yr	LiTEM	Liska et al. (2016b)
						ED	Liska et al. (2016c)	strange behaviour in data from Bookmeyer et al. (1977)
UV Oct	16 32 25.53 -83 54 10.5	8.7 - 9.97 V	B	RRab	-	VBRM	Kervella et al. (2019a)
EY Oph	17 02 05.05 -29 24 50.6	13.9 - 15.2 p	-	RR:	-	VBR	Kervella et al. (2019b)	Slight PM divergence, possibly bound companion
SDSS J170733.93+585059.7	17 07 33.92 +58 50 59.8	16.101 (0.61) CV	-	RRab	-	SPD	Kinman et al. (2012)	CEMP
V0487 Sco	17 35 05.83 -34 23 45.0	11.18 - 11.75 V	-	RRc	-	VBR	Kervella et al. (2019b)	Fast PM, probably bound companion
OGLE-BLG-RRLYR-23243	17 37 29.38 -30 02 55.4	18.955 I	-	RRab	7.3259816 d	ED	Soszynski et al. (2017)	= OGLE-BLG-ECL-047096
OGLE-BLG-RRLYR-02792	17 47 38.21 -35 31 07.1	17.079 V	-	RRab	15.2447 d	ED	Soszynski et al. (2011)
					15.24340 d	EDM+RVM	Pietrzynski et al. (2012)	M_RR = 0.261 M_S!, BEP
					15.24340 d	EDM+RVM	Smolec et al. (2013)	BEP
					15.2434042 d	ED	Soszynski et al. (2017)	= OGLE-BLG-ECL-108266, BEP
OGLE-BLG-RRLYR-03539	17 49 32.68 -35 42 55.9	16.437 V	-	RRab	-	ED	Soszynski et al. (2011)	one brightness drop
OGLE-BLG-RRLYR-04376	17 50 52.69 -32 49 35.7	19.214 V	-	RRab	2782 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-04522	17 51 06.67 -33 12 24.2	16.703 V	-	RRab	> 6000 d	LiTE	Hajdu et al. (2015)
OGLE-BLG-RRLYR-05135	17 51 59.98 -30 22 15.7	19.413 V	-	RRab	> 6000 d	LiTE	Hajdu et al. (2015)
OGLE-BLG-RRLYR-05152	17 52 00.81 -29 43 55.5	20.270 V	-	RRab	> 6000 d	LiTE	Hajdu et al. (2015)
OGLE-BLG-ELL-008818	17 52 03.19 -29 44 27.4	19.731 V	-	RRab	16.5781669 d	ELL	Soszynski et al. (2017)
OGLE-BLG-RRLYR-05691	17 52 46.17 -30 24 47.0	18.868 V	-	RRab	4640 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-06498	17 53 53.31 -29 44 23.8	18.114 V	-	RRab	2789 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-06498	17 53 53.31 -29 44 23.8	18.114 V	-	RRab	-	RV	Hajdu et al. (2018)	Shift in RVs between two seasons of -4.7 km/s
OGLE-BLG-RRLYR-06807	17 54 21.99 -29 37 28.4	18.289 V	-	RRab	1.9123564 d	ED	Soszynski et al. (2017)	= OGLE-BLG-ECL-172630
OGLE-BLG-RRLYR-06981	17 54 39.21 -29 34 58.6	17.435 V	-	RRab	4014 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-07566	17 55 39.94 -29 45 55.0	17.738 V	-	RRab	3485 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-07640	17 55 48.29 -30 03 45.6	18.774 V	-	RRab	1255 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-07943	17 56 17.96 -30 23 53.4	19.034 V	-	RRab	3726 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-09197	17 58 21.93 -28 26 09.4	18.595 V	-	RRab	-	ED	Soszynski et al. (2011)	one brightness drop
OGLE-BLG-RRLYR-09789	17 59 13.88 -28 39 10.0	16.885 V	-	RRab	3674 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-09789	17 59 13.88 -28 39 10.0	16.885 V	-	RRab	-	RV	Hajdu et al. (2018)	Shift in RVs between two seasons of -6.1 km/s
OGLE-BLG-RRLYR-10891	18 01 12.25 -28 57 25.8	16.834 V	-	RRab	> 6000 d	LiTE	Hajdu et al. (2015)
OGLE-BLG-RRLYR-11361	18 02 04.73 -33 51 46.8	17.141 V	-	RRab	-	ED	Soszynski et al. (2011)	one brightness drop
OGLE-BLG-RRLYR-11522	18 02 23.89 -28 32 57.7	17.245 V	-	RRab	3894 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-11683	18 02 40.22 -28 36 02.5	16.733 V	-	RRab	> 6000 d	LiTE	Hajdu et al. (2015)
OGLE-BLG-RRLYR-12611	18 04 44.03 -29 40 39.8	16.474 V	-	RRab	> 6000 d	LiTE	Hajdu et al. (2015)
OGLE-BLG-RRLYR-12698	18 04 56.13 -30 33 08.5	17.127 V	-	RRab	> 6000 d	LiTE	Hajdu et al. (2015)
OGLE-BLG-RRLYR-13534	18 06 37.67 -27 00 52.8	17.042 V	-	RRab	3715 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-14145	18 08 09.30 -26 47 42.9	17.729 V	-	RRab	4045 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-14408	18 08 47.40 -26 54 49.0	17.096 V	-	RRab	2734 d	LiTEM	Hajdu et al. (2015)
OGLE-BLG-RRLYR-14852	18 10 10.52 -25 56 21.6	17.357 V	-	RRab	-	LiTE	Hajdu et al. (2015)
OGLE-BLG-RRLYR-35558	18 16 27.22 -29 13 03.1	19.117 V	-	RRab	0.4045578 d	ED	Soszynski et al. (2017)	= OGLE-BLG-ECL-391584
AQ Lyr	18 34 51.04 +26 35 41.8	12.3 - 13.51 V	B	RRab	19.8 yr	LiTEM	Liska et al. (2016b)	Cyclic variations probably irregular (no LiTE)
CN Lyr	18 41 15.95 +28 43 21.1	11.07 - 11.76 V	-	RRab	-	RV	Fernley & Barnes (1997)
CN Lyr	18 41 15.95 +28 43 21.1	11.07 - 11.76 V	-	RRab	-	RV	Solano et al. (1997)
RZ Lyr	18 43 37.88 +32 47 54.0	10.6 - 12.03 V	B	RRab	-	LiTE	Le Borgne et al. (2007)
V349 Lyr	18 49 24.27 +42 44 45.2	16.780 - 17.768 Kp	B?	RRab	-	LiTE	Guggenberger & Steixner (2015)	= KIC 7176080
KIC 2831097	19 02 06 +38 04 41	14.5 Kp	B	RRc	752.9 d	LiTEM	Sodor et al. (2017)
XZ Dra	19 09 42.61 +64 51 32.1	9.59 - 10.65 V	B	RRab	7200 d	LiTEM+RVM	Jurcsik, Benko & Szeidl (2002)
FN Lyr	19 10 22.25 +42 27 31.7	12.146 - 13.227 Kp	-	RRab	794.8 d	LiTEM	Li & Qian (2014)
BK Dra	19 18 20.67 +66 24 48.0	10.59 - 11.87 V	-	RRab	-	RV	Fernley & Barnes (1997)
BK Dra	19 18 20.67 +66 24 48.0	10.59 - 11.87 V	-	RRab	75.3 yr \| 78.4 yr	LiTEM	Li et al. (2018a)
KIC 7030715	19 23 24.53 +42 31 42.5	13.092 - 13.739 Kp	-	RRab	-	LiTE	Guggenberger & Steixner (2015)
RR Lyr	19 25 27.91 +42 47 03.7	7.06 - 8.12 V	B	RRab	14.1 yr	LiTEM	Liska et al. (2016b)	Cyclic variations probably irregular (no LiTE)
XZ Cyg	19 32 29.31 +56 23 17.5	8.9 - 10.16 V	B	RRab	-	VBRM	Kervella et al. (2019a)
V894 Cyg	19 33 00.91 +46 14 22.8	12.579 - 13.684 Kp	-	RRab	-	LiTE	Guggenberger & Steixner (2015)
V894 Cyg	19 33 00.91 +46 14 22.8	12.579 - 13.684 Kp	-	RRab	1084.4 d	LiTEM	Li & Qian (2014)
CS Del	20 28 54.86 +15 13 13.9	13.0 - 13.3 p	-	RRc	-	VBR	Kervella et al. (2019b)	Very tight, high probability bound companion
DM Cyg	21 21 11.55 +32 11 28.7	10.93 - 11.99 V	B	RRab	-	RV	Fernley & Barnes (1997)
SX Aqr	21 36 08.45 +03 13 50.0	11.043 - 12.185 V	-	RRab	-	LiTE	Le Borgne et al. (2007)
AV Peg	21 52 02.79 +22 34 29.4	9.93 - 10.99 V	-	RRab	23400 d	LiTE	Szeidl, Olah & Mizser (1986)
					-	LiTE	Le Borgne et al. (2007)
					47.7 yr	LiTEM	Liska et al. (2016b)
SS Oct	21 53 35.38 -82 46 43.8	10.8 - 12.1 p	B	RRab	-	VBR	Kervella et al. (2019b)	Very tight bound companion
TY Gru	22 16 39.42 -39 56 18.0	13.6 - 14.7 CR	-	RRab	-	SPD	Preston et al. (2006)	CEMP
CZ Lac	22 19 30.76 +51 28 14.8	10.77 - 11.26 V	B	RRab	-	VBRM	Kervella et al. (2019a)
CZ Lac	22 19 30.76 +51 28 14.8	10.77 - 11.26 V	B	RRab	-	VBR	Kervella et al. (2019b)	PMa, probably bound, triple system
AE Peg	22 27 21.69 +16 48 14.1	11.834 - 13.153 V	B	RRab	99 yr	LiTEM	Liska et al. (2016b)	Too high mass of the expected companion (no LiTE)
BH Peg	22 53 01.04 +15 47 16.6	9.99 - 10.79 V	B	RRab	-	LiTE	Le Borgne et al. (2007)
AT And	23 42 30.83 +43 00 51.7	10.42 - 10.92 V	-	RRab	-	VBRM	Kervella et al. (2019a)

Blends or other disproved candidates

Name of the object	Coordinates	Mag. range	Blazhko	Pulsation period [d]	Orbital period [d]	Type	Author(s)	Comments
OGLE-LMC-RRLYR-05345	05 07 31.01 -69 30 10.3	19.319 V	-	0.482328	2.29109	RRab+ED	Soszynski et al. (2003)	= OGLE050731.10-693010.3, P_orb too short, probably optical blend
OGLE-LMC-RRLYR-05345	05 07 31.01 -69 30 10.3	19.319 V	-	0.4823251	2.29105	RRab+ED	Soszynski et al. (2016)
OGLE-LMC-RRLYR-10752	05 18 22.46 -69 18 16.6	19.200 V	-	0.618889	5.47580	RRab+ED	Soszynski et al. (2003)	= OGLE051822.60-691817.3, P_orb too short, probably optical blend
OGLE-LMC-RRLYR-10752	05 18 22.46 -69 18 16.6	19.200 V	-	0.6188738	5.47595	RRab+ED	Soszynski et al. (2016)
OGLE-LMC-RRLYR-13058	05 22 17.96 -69 28 27.3	18.629 V	-	0.564876	8.92371	RRab+ED	Soszynski et al. (2003)	= OGLE052218.07-692827.4
				0.564876	8.92371	RRab+ED	Guinan (2007)
				0.564876 + 0.3579?	-	RRab+RR?	Prsa et al. (2008)	optical blend (from 5 sources, 2 are RR)
				0.5648761	8.92345	RRab+ED	Soszynski et al. (2016)	probably optical blend
AD CMi	07 52 47.18 +01 35 50.5	9.21 - 9.51 V	-	0.12297446	10965*	DSCT+LiTE	Fu & Jiang (1996)
				0.122974463	11118*	DSCT+LiTE	Fu (2000)
				0.12297451	15660	RRab+LiTE	Hurta, Pocs & Szeidl (2007)
				0.122974478	9930*	HADS+LiTE	Khokhuntod et al. (2007)
HD 139966 AB	15 43 30.18 -51 50 47.5	10.3 - 11.5 V	-	-	8.58313	ED	Alden (1935)	= HH Nor
				0.598275	8.5835	RRab+ED	Kiss & Derekas (2004)	visual binary, separation 12.6 arcsec
				0.5982972	8.5835	RRab+ED	Alfonso-Garzón et al. (2012)	visual binary = for OMC blend
BX Dra	16 06 17.37 +62 45 46.1	10.63 (0.54) V	-	-	-	RV	Solano et al. (1997)
BX Dra	16 06 17.37 +62 45 46.1	10.63 (0.54) V	-	-	0.579027	EW	Schmidt, Chab & Reiswig (1995), Pych et al. (2004) + erratum	type reclassified

* the original value of orbital period given in years or cycles per day (frequency) was recalculated to days. In case of usage, please give original value from the paper.

References for binarity

Abt, H. A. & Wisniewski, W. Z., 1972, IBVS, 697, 1
Alden, H. L., 1935, AJ, 44, 191
Alfonso-Garzón, J., Domingo, A., Mas-Hesse, J. M. & Giménez, A., 2012, A&A, 548A, & 79
Bookmeyer, B. B., Fitch, W. S., Lee, T. A., Wisniewski, W. Z., & Johnson, H. L., 1977, RMxAA, 2, 235
Dahm, M., 1992, BAV Rundbrief - Mitteilungsblatt der Berliner Arbeits-gemeinschaft fuer Veraenderliche Sterne, 41, 62
de Ponthiere, P., Hambsch, F.-J., Menzies, K., & Sabo, R., 2016, Journal of the American Association of Variable Star Observers (JAAVSO), 44, 18
Derekas, A., Kiss, L. L., Udalski, A., et al., 2004, MNRAS, 354, 821
Detre, L., 1937, Astronomische Nachrichten, 262, 81
Elmasli, A., Aksu, O., Albayrak, B., & Selam, S. O., 2006, ASP Conference Series, 349, 233 Fernley, J. A., 1993, Obs, 113, 197
Fernley, J., & Barnes, T. G., 1997, A&AS, 125, 313
Firmanyuk, B. N., 1976, IBVS, 1152, 1
Fitch, W. S., Wisniewski, W. Z., & Johnson, H. L., 1966, CoLPL, 5, 3
Fu, J.-N., & Jiang, S.-Y., 1996, IBVS, 4325, 1
Fu, J. N., 2000, ASPC, 203, 475
Guinan, E., 2007, HST Proposal ID 11223, Cycle 16
Guggenberger, E., & Steixner, J., 2015, European Physical Journal Web of Conferences, 101, 06030
Hajdu, G., Catelan, M., Jurcsik, J., et al., 2015, MNRAS, 449, L113
Hajdu, G., Catelan, M., Jurcsik, J., & Thompson, I. B., 2018, Proceedings of the Polish Astronomical Society, Vol. 6. Edited by R. Smolec, K. Kinemuchi, and R.I. Anderson, 248 Hurta, Zs., Pocs, M. D., & Szeidl, B., 2007, IBVS, 5774, 1
Husar, D., 2003, BAVSR, 52, 89
Jurcsik, J., Benko, J. M., & Szeidl, B., 2002, A&A, 396, 539
Kanyo, S., 1986, CoKon, 87, 1
Kennedy, C. R., Stancliffe, R. J., Kuehn, C., Beers, T. C., Kinman, T. D., Placco, V. M., Reggiani, H., Rossi, S., & Lee, Y. S., 2014, ApJ, 787, 6
Kervella, P., Gallenne, A., Evans, N. R., Szabados, L., Arenou, F., Mérand, A., Proto, Y., Karczmarek, P., Nardetto, N., Gieren, W., Pietrzynski, G., 2019a, A&A, 623, A116
Kervella, P., Gallenne, A., Evans, N. R., Szabados, L., Arenou, F., Mérand, A., Nardetto, N., Gieren, W., Pietrzynski, G., 2019b, A&A, 623, A117
Khokhuntod, P., Fu, J.-N., Boonyarak, Ch., et al., 2007, ChJAA, 7, 421
Kholopov, P. N., 1971, PZ, 18, 117
Kinman, T. D., & Carretta, E., 1992, PASP, 104, 111
Kinman, T. D., Aoki, W., Beers, T. C., & Brown, W. R., 2012, ApJ, 775, L18
Kiss, L. L., Szatmary, K., Gal, J., & Kaszas, G., 1995, IBVS, 4205, 1
Kiss, L. L., & Derekas, A., 2004, IBVS, 5555, 1
Le Borgne, J. F., Paschke, A., Vandenbroere, J., et al., 2007, A&A, 476, 307
Li, L.-J., & Qian, S.-B., 2014, MNRAS, 444, 600
Li, L.-J., Qian, S.-B., & Zhu, L.-Y., 2018a, ApJ, 863, 151
Li, L.-J., Qian, S.-B., Voloshina, I, Metlov, V. G., Zhu, L.-Y., Liao, & W.-P., 2018b, PASJ, 70, 71
Liska, J., Skarka, M., Mikulasek, Z., Chrastina, M., 2016a, A&A, 589, A94
Liska, J., Skarka, M., Zejda, M., Mikulasek, Z., & de Villiers, S. N., 2016b, MNRAS, 459, 4360
Liska, J., Skarka, M., Hajkova, P., & Auer, R. F., 2016c, OEJV, 176, 4
Odell, A. P., Sreedhar, Y. H., 2016, IBVS, 6180, 1
Pietrzynski, G., Thompson, I. B., Gieren, W., et al., 2012, Natur, 484, 75
Preston, G. W., Thompson, I. B., Sneden, C., Stachowski, G., & Shectman, S. A., 2006, AJ, 132, 1714
Prsa, A., Guinan, E. F., Devinney, E. J., & Engle, S. G., 2008, A&A, 489, 1209
Pych, W., Rucinski, S. M., DeBond, H., et al., 2004, AJ, 127, 1712
Pych, W., Rucinski, S. M., DeBond, H., et al., 2011, AJ, 141, 207 = Erratum
Saha, A., & White, R. E., 1990, PASP, 102, 148
Saha, A., & White, R. E., 1990, PASP, 102, 495 = Erratum
Schmidt, E. G., Chab, J. R., & Reiswig, D. E., 1995, AJ, 109, 1239
Sidorov, K. A., 1978, PZ, 20, 5578
Skarka, M., Liska, J., Dreveny, R., Guggenberger, E., Sodor, A., Barnes, T. G., & Kolenberg, K., 2018a, MNRAS, 474, 824
Skarka, M., Liska, J., Dreveny, R., Sodor, A., Barnes, T. G., & Kolenberg, K., 2018b, OEJV, 187, 32
Skarka, M., Liska, J., Sodor, A., Guggenberger, E., Dreveny, R., Barnes, T. G., & Kolenberg, K., 2018c, arXiv:1809.03230
Smolec, R., Pietrzynski, G., Graczyk, D., et al., 2013, MNRAS, 428, 3034
Sodor, A., Skarka, M., Liska, J., Bognar, Zs., 2017, MNRAS, 465, L1
Solano, E., Garrido, R., Fernley, J., & Barnes, T. G., 1997, A&AS, 125, 321
Soszynski, I., Udalski, A., Szymanski, M., et al., 2003, AcA, 53, 93
Soszynski, I., Udalski, A., Szymanski, M. K., et al., 2009, AcA, 59, 1
Soszynski, I., Dziembowski, W. A., Udalski, A., et al., 2011, AcA, 61, 1
Soszynski, I., Udalski, A., Szymanski, M. K., et al., 2016, AcA, 66, 131
Soszynski, I., Pawlak, M., Pietrukowicz, P, et al., 2017, arXiv:1701.03105, (2016, AcA, 66, 131)
Szeidl, B., Olah, K., & Mizser, A., 1986, CoKon, 89, 57
Wade, R. A., Donley, J., Fried, R., et al., 1999, AJ, 118, 2442
Wisniewski, W. Z., 1971, AcA, 21, 307
Woodward, E. J., 1972, JAVSO, 1, 68

Other references for binarity - not used in database

Coutts, C., 1971, IAU Colloq. 15: New Directions and New Frontiers in Variable Star Research, 100, 238
Fernley, J., 1993, A&A, 268, 591
Guggenberger, E., Barnes, T. G., Kolenberg, K., 2016, Communications from the Konkoly Observatory, 105, 145
Hajdu, G., Catelan, M., Jurcsik, J., et al., 2016, Communications from the Konkoly Observatory, 105, 137
Karczmarek, P., 2015, Advances in Astronomy and Space Physics, 5, 24
Karczmarek, P., Pietrzynski, G., Belczynski, K., et al., 2016, 37th Meeting of the Polish Astronomical Society, 3, 45
Karczmarek, P., Wiktorowicz, G., Ilkiewicz, K., et al., 2017, MNRAS, 466, 2842
Liska, J., Skarka, M., Sodor, A., Bognar, Zs., 2017, Open European Journal on Variable Stars, 180, 37
Neilson, H. R., Percy, J. R., & Smith, H. A., 2016, Journal of the American Association of Variable Star Observers (JAAVSO), 44, 179
Skarka, M., Liska, J., Zejda, M., Mikulasek, Z., 2016, Communications from the Konkoly Observatory, 105, 141
Szatmary, K., 1990, JAVSO, 19, 52
Szatmary, K., 1993, IBVS, 3943, 1
Szeidl, B., 2005, ASPC, 333, 183
Zhou, A.-Y., 2010, arXiv:1002.2729

References for the Blazhko effect

Blazhko periods and corresponding references were adopted (preferably) from the on-line version of the BlaSGalF database, Skarka (2013). This list is sorted alphabetically according to an acronym of a constellation in the names of the objects.

OV And - Blazhko effect?, Wils, Lloyd & Bernhard (2006): P_B = 27: d, Kollenberg et al. (2005): Blazhko effect is uncertain due to close companions
XX And - Blazhko effect?, Lange, G. A. (1962), Astron. Tsirk. N227, 19, 1962 (VSX): P_B = 36 d, e.g. Skarka (2014b): no Blazhko effect
TY Aps - Le Borgne et al. (2012): P_B = 109.130 d, Skarka (2014): P_B = 108.6 d
RW Ari - Blazhko effect?, Edwards (1978) - master thesis: P_B = 38 or 114 d
RS Boo - multiple P_B, Le Borgne et al. (2012): P_B = 532.481 d, Skarka (2014): P_B = 41.3, 62.5 d, Liska et al. (2016b): P_B = 39.5, 60.0, 550.5 d
RZ Cet - Blazhko effect?, Kovacs (2005): P_B = unknown
TU Com - multiple P_B, de Ponthiere, P., Hambsch, F.-J., Menzies, K., & Sabo, R., 2016, Journal of the American Association of Variable Star Observers (JAAVSO), 44, 18: P_B = 43.6, 45.5 d
SS Cnc - Jurcsik et al. (2006): P_B = 5.309 d, Caffola et al. (2017): P_B = 5.313 d
RW Cnc - multiple P_B, Smith (1995): P_B = 87 d, Skarka (2014): P_B = 29.14, 21.9 d
RV CrB - Blazhko effect?, VSX (2016, August 9): P_B = unknown
DM Cyg - Jurcsik et al. (2009a): P_B = 10.57 d
XZ Cyg - LaCluyzé et al. (2004): P_B = 57.4 - 58.5 d and 41.6 d
Z CVn - Kanyo (1966): P_B = 22.75 d, Le Borgne et al. (2012): P_B = 22.98 d, Skarka et al. (2018a): P_B = 22.931 d
XZ Dra - varied P_B, Jurcsik, Benko & Szeidl (2002): P_B = 73 - 77 d
RR Gem - Jurcsik et al. (2005): P_B = 7.23 d
AR Her - Wils, Lloyd & Bernhard (2006): P_B = 32 d, Wischnewski (2016): P_B = 32.062 or 29.528 d, Li et al. (2018a): P_B = 31.987 d
VX Her - Azarnova (1963, PZ, 14, 504), Wunder (1990): B - visible only as O-C variation (pg, vis, pe measurements), P_B = 455.37 d, A_O-C = 0.013 d, Skarka (2014): B not visible in ASAS data, Liska et al. (2016b): B not visible in O-C diagram, not visible in own photometric measurements
CZ Lac - Jurcsik et al. (2009b): P_B = 14.6, 18.6 d
AQ Lyr - Jurcsik et al. (2009b): P_B = 64.9 d
RR Lyr - varied P_B, Kolenberg et al. (2006): P_B = 38.8 - 40.8 d
RZ Lyr - multiple P_B, Jurcsik et al. (2012): P_B = 121, 30 d
V349 Lyr - Blazhko effect?, Benko et al. (2010): P_B > 127 d, Nemec et al. (2013): Non-Blazhko star
SS Oct - Wils & Sódor (2005): P_B = 145 d, Kovács (2005): Blazhko effect is present
UV Oct - Le Borgne et al. (2012): P_B =146.99 d, Szczygiel & Fabrycky (2007): P_B = 143.73 d, Wils & Sódor (2005): P_B = 145 d
AE Peg - Wils, Lloyd & Bernhard (2006): P_B = 23: d
BH Peg - Skarka (2014): P_B = 175.7 d , Smith (1995): P_B = 39.8 d?
RY Psc - Skarka (2014): P_B = 153.3 d , Szczygiel & Fabrycky (2007): P_B = 154.53 d?
AR Ser - two different P_B, Bonnardeau & Hambsch (2015): P_B = 89.1, 109.6 d, Kolenberg, Guggenberger & Medupe (2008): P_B = 110 d, Wils, Lloyd & Bernhard (2006): P_B = 63: d, Firmanyuk (1977): P_B = 108.4 d, Szeidl (1967): P_B = 105 d
RU Scl - Skarka (2014): P_B = 23.91 d or 23.6 d, Li et al. (2018a): P_B = 24.3 d
RV UMa - varied P_B, Hurta et al. (2008): P_B = 89.9 - 90.6 d
BB Vir - Blazhko effect?, GCVS web: P_B = unknown
ST Vir - Le Borgne et al. (2012): P_B = 25.58 d, Li et al. (2018a): P_B = 25.61 d
KIC 2831097 - irregular Blazhko effect, Sodor et al. (2017): P_B = 47.0 d

History

2019 May 07
Database updated - created new groups/methods VBR (Visual Binary Resolved) and VBRM (Visual Binary Resolved with Model available),
add VBRM candidates from Kervella et al. (2019a): XX And (already in database - LiTEM), AT And, AE Boo, V0363 Cas, EZ Cep, XZ Cyg, CZ Lac, V0764 Mon, UV Oct, UY Scl, AR Ser, UU Vir,
add VBR candidates from Kervella et al. (2019b): OV And, CS Del, V0893 Her, RR Leo (already in database - LiTE), SS Oct, EY Oph, V0487 Sco, CZ Lac (this object also in Kervella et al. (2019a), CZ Lac is from Table 2. - part - RR Lyrae with Near candidates, the rest objects from Table 2. - part - RR Lyrae with Bound candidates),
add reference Hajdu et al. (2018) - RV candidates already in database (OGLE-BLG-RRLYR-06498, OGLE-BLG-RRLYR-09789)
New status: 106 candidates, 6 false-positive candidates

2018 November 11
Database updated - candidate XX And, SV Eri, RU Scl, ST Vir + new parameters for candidates BK Dra, AR Her, RY PSc add (Li et al. 2018a), other candidates UY Cam (Li et al. 2018b), Z CVn (Skarka et al. 2018a,b,c) add.
New status: 89 candidates, 6 false-positive candidates
Add new webpage counter, the Geovisite cleared

2017 October 1
Database updated - candidate SS Cnc add (Elmasli et al. 2006).
New status: 83 candidates, 6 false-positive candidates

2017 January 29
Database updated - added record for 1 known and 4 unknown candidates from Soszynski et al. (2017).
New status: 82 candidates, 6 false-positive candidates

2017 January 1
Database updated - Reference Sodor et al. (2016), arXiv:1609.06474 replaced with Sodor et al. (2017), 2017MNRAS.465L...1S., reference Soszynski et al. (2016), arXiv:1606.02727 replaced with Soszynski et al. (2016), 2016AcA....66..131S
New status: 78 candidates, 6 false-positive candidates

2016 September 29
Database updated - candidate KIC 2831097 (Sodor et al., 2016) added. New reference for RW Ari (Odell & Sreedhar, 2016) added.
New status: 78 candidates, 6 false-positive candidates

2016 August 9
Database updated - candidates RV CrB and RR Gem (Firmanyuk, 1976) added. Several changes in writing style performed. An unification of length of orbital periods in the table 'Blends or other disproved candidates' was performed, all values in days.
New status: 77 candidates, 6 false-positive candidates

2016 July 1
Database updated - new class of candidates - SPD added, 9 candidates from SPD (CEMP) added: TY Gru (Preston et al. 2006), SDSS J170733.93+585059.7 (Kinman et al. 2012), IV Leo, LO Leo, LP Leo, V0370 Vir, V0408 Vir, ZZ Vir, WY Vir (Kennedy et al. 2014). Reference de Ponthiere et al. (2016), arXiv:1605.03242 replaced with de Ponthiere et al. (2016), 2016JAVSO..44...18D, coordinates and other information about OGLE-LMC-RRLYR-30844 from OGLE-IV catalogue added.
New status: 75 candidates, 6 false-positive candidates

2016 June 11
Database updated - new candidate OGLE-LMC-RRLYR-30844 (Soszynski et al. 2016) added, information about OGLE-LMC-RRLYR-03541, OGLE-LMC-RRLYR-05345, OGLE-LMC-RRLYR-10752, OGLE-LMC-RRLYR-13058 updated according to Soszynski et al. (2016). Reference Liska et al. (2015b), 2015arXiv150405246L replaced with Liska et al. (2016b), 2016MNRAS.459.4360L (orbital period BB Vir updated, notes for RR Lyr, AQ Lyr, AE Peg added).
New status: 66 candidates, 6 false-positive candidates

2016 May 13
Database updated - new candidate TU Com (de Ponthiere et al. 2016) added.
New status: 65 candidates, 6 false-positive candidates

2016 May 5
Database updated - reference Liska et al. (2015a), 2015arXiv150203331L replaced with Liska et al. (2016a), 2016A&A...589A..94L (values of the orbital period of TU UMa updated), reference Liska et al. (2016), 2016arXiv160103082L replaced with Liska et al. (2016c), 2016OEJV..176....4L, reference Guggenberger & Steixner (2014), 2014arXiv1411.1555G replaced with Guggenberger & Steixner (2015), 2015EPJWC.10106030G, new section with references 'Other references for binarity - not used in database' added.
New status: 64 candidates, 6 false-positive candidates

2016 February 18
Database updated - references for VX Her - Liska et al. (2016), Azarnova (1963), for RZ Cet - Liska et al. (2016), for RW Ari - Liska et al. (2016), Detre (1937), Dahm (1992), Bookmeyer et al. (1977) added.
New status: 64 candidates, 6 false-positive candidates

2016 January 11
New hit counter added.
Database updated - references for OGLE-BLG-RRLYR-02792 (Soszynski et al. 2011) and 3 candidates OGLE-BLG-RRLYR-03539, OGLE-BLG-RRLYR-09197, OGLE-BLG-RRLYR-11361 (Soszynski et al. 2011) added, reference for OGLE052218.07-692827.4 (Guinan 2007) added.
New status: 64 candidates, 6 false-positive candidates

2015 September 25
Database updated - references for RW Ari (Woodward, 1972, Sidorov, 1978) added.
New status: 61 candidates, 6 false-positive candidates

2015 June - July
Preparation of preliminary version of the web page (not on-line). Objects adopted mainly from papers Liska et al. (2015b) and Liska et al. (2015a).

2015 May - June
Creating concept of the Catalogue.

hit counter - geovisite