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 82 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: January 29, 2017.

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
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 objectCoordinatesMag. rangeBlazhkoTypeOrbital periodMethod(s)Author(s)Comments
RY Psc 00 11 41.10 -01 44 55.3 11.82 - 12.72 V B RRab - LiTELe Borgne et al. (2007)
CI And 01 55 08.29 +43 45 56.5 11.76 - 12.66 V - RRab - RVFernley & Barnes (1997)
RW Ari 02 16 03.72 +17 31 58.912.12 - 12.60 VB? RRc 3.1754 dEDWisniewski (1971)in 3 nights fainter (2x0.6 mag, 1x0.1 mag)
-RVAbt & Wisniewski (1972)only two RV values
-EDWoodward (1972)depression with 0.2 mag in data from
Detre (1937)
-EDSidorov (1978)depression in data from Detre (1937)
4.639094 dEDDahm (1992)other eclipses and brightening in the curves?
-EDLiska et al. (2016c)strange behaviour in data from
Bookmeyer et al. (1977)
-EDOdell & 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 LiTELe Borgne et al. (2007)
75.4 yrLiTEMLiska et al. (2016b)
- EDLiska 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 - LiTELe Borgne et al. (2007)
OGLE-LMC-RRLYR-03541 05 02 17.37 -68 51 24.3 18.932 V - RRab 16.229 d EDSoszynski et al. (2009)in LMC - high possibility of blend, BEP?
16.2287 d EDSoszynski et al. (2016)
BE Dor 05 09 18.91 -69 50 14.5 15.231 V - RRc 2900 dLiTEMDerekas 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 EDSoszynski 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 LiTEFirmanyuk (1976)
XX Hya 09 09 49.48 -15 35 58.7 11.353 - 12.505 V - RRab - RVFernley & Barnes (1997)
- RVSolano et al. (1997)
RW Cnc 09 19 06.04 +29 03 55.7 10.7 - 12.6 pg B RRab - LiTELe Borgne et al. (2007)
RR Leo 10 07 43.38 +23 59 30.2 9.921 - 11.254 V - RRab 11300 dLiTESzeidl, Olah & Mizser (1986)
IV Leo 10 58 12.57 -00 05 40.4 15.4 - 15.8 V - RRab - SPDKennedy et al. (2014)CEMP
TU UMa 11 29 48.49 +30 04 02.4 9.26 - 10.24 V - RRab 8400 dLiTESzeidl, Olah & Mizser (1986)
7374.5 dRVM+LiTEMSaha & White (1990) + Erratum
8800 dLiTEMKiss et al. (1995)
- RVFernley & Barnes (1997)
- RVSolano et al. (1997)
7399 d - 8812 dRVM+LiTEMWade et al. (1999)
23.27 yr | 23.30 yrRVM+LiTEMLiska et al. (2016a)
SS Leo 11 33 54.49 -00 02 00.0 10.420 - 11.584 V - RRab 110.7 yrLiTEMLiska et al. (2016b)
LO Leo 11 35 22.75 -00 53 42.7 14.8 - 15.9 V - RRab - SPDKennedy et al. (2014)CEMP
LP Leo 11 36 39.79 -01 25 16.6 16.5 - 17.0 V - RRab - SPDKennedy et al. (2014)CEMP
SU Dra 11 37 56.61 +67 19 47.0 9.18 - 10.27 V - RRab - LiTELe Borgne et al. (2007)
70.7 yrLiTEMLiska et al. (2016b)
BX Leo 11 38 02.06 +16 32 36.2 11.0 - 11.7 pg - RRc - RVSolano et al. (1997)
ST Leo 11 38 32.68 +10 33 41.7 10.795 - 12.110 V - RRab - RVFernley & Barnes (1997)
V0370 Vir 12 06 04.13 -02 12 57.4 14.7 - 15.6 V - RRab - SPDKennedy et al. (2014)CEMP
TU Com 12 13 46.96 +30 59 06.6 13.901 (0.85) CV B RRab 1676 d LITEMde Ponthiere et al. (2016)
S Com 12 32 45.63 +27 01 45.4 10.88 - 12.12 V - RRab - LiTELe Borgne et al. (2007)
90.1 yr | 105.8 yrLiTEMLiska et al. (2016b)
V0408 Vir 12 40 03.53 -00 04 09.6 16.5 - 17.2 V - RRab - SPDKennedy et al. (2014)CEMP
ZZ Vir 13 23 38.62 -04 21 41.7 14.041 (0.73) CV - RRab - SPDKennedy et al. (2014)CEMP
RV UMa 13 33 18.09 +53 59 14.69.81 - 11.3 VB RRab 66.93 yrLiTEMLiska et al. (2016b)
WY Vir 13 35 16.14 -06 58 22.6 13.457 (0.96) CV - RRab - SPDKennedy et al. (2014)CEMP
BB Vir 13 51 40.78 +06 25 51.410.732 - 11.450 V B? RRab - COLKinman & Carretta (1992)
- COLFernley (1993)
92.7 yrLiTEMLiska et al. (2016b)
RU CVn 13 59 33.28 +31 39 04.3 11.36 - 12.48 V - RRab 60000 yrLiTEHusar (2003)orbital period in days?
101.6 yrLiTEMLiska et al. (2016b)
RS Boo 14 33 33.21 +31 45 16.6 9.69 - 10.84 V B RRab - COLKanyo (1986)
- LiTELe Borgne et al. (2007)
76.7 yr | 147 yrLiTEMLiska et al. (2016b)
TY Aps 14 48 50.01 -71 19 41.9 11.200 - 12.403 V B RRab - RVSolano et al. (1997)
V80 UMi 15 09 40.5 +67 19 29 19.20 - 20.25 pg - RRab 2.01652 d | 2.07132 dEDMKholopov (1971)object in Ursa Minor Dwarf galaxy,
coordinates and magnitudes we only estimated
from map an original measurements
AT Ser 15 55 40.44 +07 59 18.7 11.013 - 11.890 V - RRab 85.6 yrLiTEMLiska et al. (2016b)
AR Her 16 00 32.23 +46 55 25.7 10.59 - 11.63 V B RRab - COLKinman & Carretta (1992)
RV CrB 16 19 25.85 +29 42 47.6 11.14 - 11.7 V B? RRc 18400 d LiTEFirmanyuk (1976)
VX Her 16 30 40.73 +18 22 00.29.913 - 11.177 VB? RRab -EDFitch, Wisniewski & Johnson (1966)1 strange night - 0.7 mag fainter (V)
83.0 yrLiTEMLiska et al. (2016b)
EDLiska et al. (2016c)strange behaviour in data from
Bookmeyer et al. (1977)
SDSS J170733.93+585059.7 17 07 33.92 +58 50 59.8 16.101 (0.61) CV - RRab - SPDKinman et al. (2012)CEMP
OGLE-BLG-RRLYR-23243 17 37 29.38 -30 02 55.4 18.955 I - RRab 7.3259816 dEDSoszynski 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 EDSoszynski et al. (2011)
15.24340 d EDM+RVMPietrzynski et al. (2012)MRR = 0.261 MS!, BEP
15.24340 d EDM+RVMSmolec et al. (2013)BEP
15.2434042 d EDSoszynski et al. (2017)= OGLE-BLG-ECL-108266, BEP
OGLE-BLG-RRLYR-03539 17 49 32.68 -35 42 55.9 16.437 V - RRab - EDSoszynski et al. (2011)one brightness drop
OGLE-BLG-RRLYR-04376 17 50 52.69 -32 49 35.7 19.214 V - RRab 2782 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-04522 17 51 06.67 -33 12 24.2 16.703 V - RRab > 6000 dLiTEHajdu et al. (2015)
OGLE-BLG-RRLYR-05135 17 51 59.98 -30 22 15.7 19.413 V - RRab > 6000 dLiTEHajdu et al. (2015)
OGLE-BLG-RRLYR-05152 17 52 00.81 -29 43 55.5 20.270 V - RRab > 6000 dLiTEHajdu et al. (2015)
OGLE-BLG-ELL-008818 17 52 03.19 -29 44 27.4 19.731 V - RRab 16.5781669 dELLSoszynski et al. (2017)
OGLE-BLG-RRLYR-05691 17 52 46.17 -30 24 47.0 18.868 V - RRab 4640 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-06498 17 53 53.31 -29 44 23.8 18.114 V - RRab 2789 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-06807 17 54 21.99 -29 37 28.4 18.289 V - RRab 1.9123564 dEDSoszynski et al. (2017)= OGLE-BLG-ECL-172630
OGLE-BLG-RRLYR-06981 17 54 39.21 -29 34 58.6 17.435 V - RRab 4014 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-07566 17 55 39.94 -29 45 55.0 17.738 V - RRab 3485 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-07640 17 55 48.29 -30 03 45.6 18.774 V - RRab 1255 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-07943 17 56 17.96 -30 23 53.4 19.034 V - RRab 3726 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-09197 17 58 21.93 -28 26 09.4 18.595 V - RRab - EDSoszynski et al. (2011)one brightness drop
OGLE-BLG-RRLYR-09789 17 59 13.88 -28 39 10.0 16.885 V - RRab 3674 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-10891 18 01 12.25 -28 57 25.8 16.834 V - RRab > 6000 dLiTEHajdu et al. (2015)
OGLE-BLG-RRLYR-11361 18 02 04.73 -33 51 46.8 17.141 V - RRab - EDSoszynski et al. (2011)one brightness drop
OGLE-BLG-RRLYR-11522 18 02 23.89 -28 32 57.7 17.245 V - RRab 3894 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-11683 18 02 40.22 -28 36 02.5 16.733 V - RRab > 6000 dLiTEHajdu et al. (2015)
OGLE-BLG-RRLYR-12611 18 04 44.03 -29 40 39.8 16.474 V - RRab > 6000 dLiTEHajdu et al. (2015)
OGLE-BLG-RRLYR-12698 18 04 56.13 -30 33 08.5 17.127 V - RRab > 6000 dLiTEHajdu et al. (2015)
OGLE-BLG-RRLYR-13534 18 06 37.67 -27 00 52.8 17.042 V - RRab 3715 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-14145 18 08 09.30 -26 47 42.9 17.729 V - RRab 4045 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-14408 18 08 47.40 -26 54 49.0 17.096 V - RRab 2734 dLiTEMHajdu et al. (2015)
OGLE-BLG-RRLYR-14852 18 10 10.52 -25 56 21.6 17.357 V - RRab - LiTEHajdu et al. (2015)
OGLE-BLG-RRLYR-35558 18 16 27.22 -29 13 03.1 19.117 V - RRab 0.4045578 dEDSoszynski et al. (2017)= OGLE-BLG-ECL-391584
AQ Lyr 18 34 51.04 +26 35 41.812.3 - 13.51 VB RRab 19.8 yrLiTEMLiska 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 - RVFernley & Barnes (1997)
- RVSolano et al. (1997)
RZ Lyr 18 43 37.88 +32 47 54.0 10.6 - 12.03 V B RRab - LiTELe Borgne et al. (2007)
V349 Lyr 18 49 24.27 +42 44 45.216.780 - 17.768 KpB? RRab - LiTEGuggenberger & Steixner (2015) = KIC 7176080
KIC 2831097 19 02 06 +38 04 41 14.5 Kp B RRc 752.9 d LiTEMSodor et al. (2017)
XZ Dra 19 09 42.61 +64 51 32.1 9.59 - 10.65 V B RRab 7200 d LiTEM+RVMJurcsik, Benko & Szeidl (2002)
FN Lyr 19 10 22.25 +42 27 31.7 12.146 - 13.227 Kp - RRab 794.8 dLiTEMLi & Qian (2014)
BK Dra 19 18 20.67 +66 24 48.0 10.59 - 11.87 V - RRab - RVFernley & Barnes (1997)
KIC 7030715 19 23 24.53 +42 31 42.5 13.092 - 13.739 Kp - RRab - LiTEGuggenberger & Steixner (2015)
RR Lyr 19 25 27.91 +42 47 03.77.06 - 8.12 VB RRab 14.1 yrLiTEMLiska et al. (2016b)Cyclic variations probably irregular (no LiTE)
V894 Cyg 19 33 00.91 +46 14 22.8 12.579 - 13.684 Kp - RRab - LiTEGuggenberger & Steixner (2015)
1084.4 dLiTEMLi & Qian (2014)
DM Cyg 21 21 11.55 +32 11 28.7 10.93 - 11.99 V B RRab - RVFernley & Barnes (1997)
SX Aqr 21 36 08.45 +03 13 50.0 11.043 - 12.185 V - RRab - LiTELe Borgne et al. (2007)
AV Peg 21 52 02.79 +22 34 29.4 9.93 - 10.99 V - RRab 23400 dLiTESzeidl, Olah & Mizser (1986)
- LiTELe Borgne et al. (2007)
47.7 yrLiTEMLiska et al. (2016b)
TY Gru 22 16 39.42 -39 56 18.0 13.6 - 14.7 CR - RRab - SPDPreston et al. (2006)CEMP
AE Peg 22 27 21.69 +16 48 14.111.834 - 13.153 VB RRab 99 yrLiTEMLiska 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 - LiTELe Borgne et al. (2007)

Blends or other disproved candidates

Name of the objectCoordinatesMag. rangeBlazhkoPulsation period [d]Orbital period [d]TypeAuthor(s)Comments
OGLE-LMC-RRLYR-05345 05 07 31.01 -69 30 10.3 19.319 V - 0.482328 2.29109 RRab+EDSoszynski et al. (2003) = OGLE050731.10-693010.3,
P_orb too short, probably optical blend
0.4823251 2.29105 RRab+EDSoszynski et al. (2016)
OGLE-LMC-RRLYR-10752 05 18 22.46 -69 18 16.6 19.200 V - 0.618889 5.47580 RRab+EDSoszynski et al. (2003) = OGLE051822.60-691817.3,
P_orb too short, probably optical blend
0.6188738 5.47595 RRab+EDSoszynski et al. (2016)
OGLE-LMC-RRLYR-13058 05 22 17.96 -69 28 27.3 18.629 V - 0.564876 8.92371 RRab+EDSoszynski et al. (2003)= OGLE052218.07-692827.4
0.564876 8.92371 RRab+EDGuinan (2007)
0.564876 + 0.3579?- RRab+RR?Prsa et al. (2008)optical blend (from 5 sources, 2 are RR)
0.5648761 8.92345 RRab+EDSoszynski 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+LiTEFu & Jiang (1996)
0.122974463 11118* DSCT+LiTEFu (2000)
0.12297451 15660 RRab+LiTEHurta, Pocs & Szeidl (2007)
0.122974478 9930* HADS+LiTEKhokhuntod et al. (2007)
HD 139966 AB 15 43 30.18 -51 50 47.5 10.3 - 11.5 V - - 8.58313 EDAlden (1935) = HH Nor
0.598275 8.5835 RRab+EDKiss & Derekas (2004)visual binary, separation 12.6 arcsec
0.5982972 8.5835 RRab+EDAlfonso-Garzón et al. (2012)visual binary = for OMC blend
BX Dra 16 06 17.37 +62 45 46.1 10.63 (0.54) V - - - RVSolano et al. (1997)
- 0.579027 EWSchmidt, Chab & Reiswig (1995), Pych et al. (2004) + erratumtype 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
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
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
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
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
Sidorov, K. A., 1978, PZ, 20, 5578
Schmidt, E. G., Chab, J. R., & Reiswig, D. E., 1995, AJ, 109, 1239
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., Wiktorowicz, G., Ilkiewicz, K., et al., 2016, arXiv:1612.00465
Liska, J., Skarka, M., Sodor, A., Bognar, Zs., 2017, arXiv:1701.05719
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 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.

TY Aps - Le Borgne et al. (2012): PB = 109.130 d, Skarka (2014): PB = 108.6 d
RW Ari - Blazhko effect?, Edwards (1978) - master thesis: PB = 38 or 114 d
RS Boo - multiple PB, Le Borgne et al. (2012): PB = 532.481 d, Skarka (2014): PB = 41.3, 62.5 d, Liska et al. (2016b): PB = 39.5, 60.0, 550.5 d
RZ Cet - Blazhko effect?, Kovacs (2005): PB = unknown
TU Com - multiple PB, de Ponthiere, P., Hambsch, F.-J., Menzies, K., & Sabo, R., 2016, Journal of the American Association of Variable Star Observers (JAAVSO), 44, 18: PB = 43.6, 45.5 d
RW Cnc - multiple PB, Smith (1995): PB = 87 d, Skarka (2014): PB = 29.14, 21.9 d
RV CrB - Blazhko effect?, VSX (2016, August 9): PB = unknown
DM Cyg - Jurcsik et al. (2009a): PB = 10.57 d
XZ Dra - varied PB, Jurcsik, Benko & Szeidl (2002): PB = 73 - 77 d
RR Gem - Jurcsik et al. (2005): PB = 7.23 d
AR Her - Wils, Lloyd & Bernhard (2006): PB = 32 d
VX Her - Azarnova (1963, PZ, 14, 504), Wunder (1990): B - visible only as O-C variation (pg, vis, pe measurements), PB = 455.37 d, AO-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
AQ Lyr - Jurcsik et al. (2009b): PB = 64.9 d
RR Lyr - varied PB, Kolenberg et al. (2006): PB = 38.8 - 40.8 d
RZ Lyr - multiple PB, Jurcsik et al. (2012): PB = 121, 30 d
V349 Lyr - Blazhko effect?, Benko et al. (2010): PB > 127 d, Nemec et al. (2013): Non-Blazhko star
AE Peg - Wils, Lloyd & Bernhard (2006): PB = 23: d
BH Peg - two different PB, Smith (1995): PB = 39.8 d?, Skarka (2014): PB = 175.7 d
RY Psc - two different PB, Szczygiel & Fabrycky (2007): PB = 154.53 d?, Skarka (2014): PB = 153.3 d
RV UMa - varied PB, Hurta et al. (2008): PB = 89.9 - 90.6 d
BB Vir - Blazhko effect?, GCVS web: PB = unknown
KIC 2831097 - irregular Blazhko effect, PB = 47.0 d, Sodor et al. (2017)

History

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.

astronomy
hit counter - geovisite