J/ApJS/213/9 Catalina Surveys periodic variable stars (Drake+, 2014)
The Catalina Surveys periodic variable star catalog.
Drake A.J., Graham M.J., Djorgovski S.G., Catelan M., Mahabal A.A.,
Torrealba G., Garcia-Alvarez D., Donalek C., Prieto J.L., Williams R.,
Larson S., Christensen E., Belokurov V., Koposov S.E., Beshore E.,
Boattini A., Gibbs A., Hill R., Kowalski R., Johnson J., Shelly F.
<Astrophys. J. Suppl. Ser., 213, 9 (2014)>
=2014ApJS..213....9D 2014ApJS..213....9D
ADC_Keywords: Stars, variable; Surveys; Photometry, VRI; Binaries, eclipsing;
Supernovae ; Photometry, SDSS
Keywords: catalogs; Galaxy: halo; Galaxy: stellar content; Galaxy: structure
techniques: photometric; stars: variables: general
Abstract:
We present ∼47000 periodic variables found during the analysis of 5.4
million variable star candidates within a 20000deg2 region covered
by the Catalina Surveys Data Release-1 (CSDR1). Combining these
variables with type ab RR Lyrae from our previous work, we produce an
online catalog containing periods, amplitudes, and classifications for
∼61000 periodic variables. By cross-matching these variables with
those from prior surveys, we find that >90% of the ∼8000 known
periodic variables in the survey region are recovered. For these
sources, we find excellent agreement between our catalog and prior
values of luminosity, period, and amplitude as well as classification.
We investigate the rate of confusion between objects classified as
contact binaries and type c RR Lyrae (RRc's) based on periods, colors,
amplitudes, metallicities, radial velocities, and surface gravities.
We find that no more than a few percent of the variables in these
classes are misidentified. By deriving distances for this clean sample
of ∼5500 RRc's, we trace the path of the Sagittarius tidal streams
within the Galactic halo. Selecting 146 outer-halo RRc's with SDSS
radial velocities, we confirm the presence of a coherent halo
structure that is inconsistent with current N-body simulations of the
Sagittarius tidal stream. We also find numerous long-period variables
that are very likely associated within the Sagittarius tidal stream
system. Based on the examination of 31000 contact binary light curves
we find evidence for two subgroups exhibiting irregular light curves.
One subgroup presents significant variations in mean brightness that
are likely due to chromospheric activity. The other subgroup shows
stable modulations over more than a thousand days and thereby provides
evidence that the O'Connell effect is not due to stellar spots.
Description:
The Catalina Sky Survey began in 2004 and uses three telescopes to
cover the sky between declination δ=-75° and +65°. Each
of the survey telescopes is run as a separate subsurveys. These
consist of the Catalina Schmidt Survey (CSS) and the Mount Lemmon
Survey (MLS) in Tucson, AZ, and the Siding Spring Survey (SSS) in
Siding Spring, Australia. All images are taken unfiltered to maximize
throughput. The observations analyzed in this work were taken in sets
of four images separated by 10 minutes with typical exposure times of
30s.
In this paper, we concentrate on the data taken by the CSS 0.7m
telescope between 2005 April and 2011 June, that was made publicly
available via CSDR1 (Drake et al. 2012AAS...21942820D). Individual
detections in CSDR1 are matched with sources from a deeper "master"
catalog derived from the median co-addition of 20 or more images.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 73 47055 Periodic Variable Catalog
table8.dat 64 42 Parameters of newly discovered Supernovae
table9.dat 76 27 Parameters of newly discovered Cataclysmic Variables
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See also:
B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)
B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)
II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)
J/AJ/146/101 : LINEAR. III. Catalog of periodic variables (Palaversa+, 2013)
J/ApJS/203/32 : Machine-learned ASAS Classification Cat. (Richards+, 2012)
J/ApJ/731/17 : Low-mass stars variability in SDSS Stripe 82 (Becker+, 2011)
J/AJ/141/166 : HATNet variability survey of K and M dwarfs (Hartman+, 2011)
J/A+A/528/A90 : SuperWASP short period eclipsing binaries (Norton+, 2011)
J/AcA/61/217 : VI light curves of SMC LPVs (Soszynski+, 2011)
J/AcA/61/103 : VI light curves of LMC eclipsing binaries (Szymanski+, 2011)
J/AcA/61/1 : VI light curves of Galactic Bulge RR Lyrae (Soszynski+, 2011)
J/MNRAS/414/2602 : Automated classification of HIP variables (Dubath+, 2011)
J/ApJS/186/233 : Variable point sources in SDSS stripe 82. I. (Bhatti+, 2010)
J/AcA/60/165 : VI light curves of SMC RR Lyrae (Soszynski+, 2010)
J/AcA/60/17 : VI light curves of SMC classical Cepheids (Soszynski+, 2010)
J/ApJ/708/717 : Light curve templates of RR Lyrae stars (Sesar+, 2010)
J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)
J/AcA/59/239 : LMC long-period variables light curves (Soszynski+, 2009)
J/AcA/59/1 : VI light curves of LMC RR Lyrae stars (Soszynski+, 2009)
J/AJ/138/466 : NSVS variables automated classification (Hoffman+, 2009)
J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009)
J/AJ/136/1242 : LMC long-period variables from MACHO (Fraser+, 2008)
J/AJ/136/1067 : New beta Lyrae and Algol candidates in NSVS (Hoffman+, 2008)
J/ApJ/678/865 : LONEOS-I RR Lyrae stars (Miceli+, 2008)
J/AcA/58/293 : Type-II and anomalous Cepheids in LMC (Soszynski+, 2008)
J/A+A/476/307 : Period variations in galactic RRab stars (Le Borgne+, 2007)
J/AJ/134/1963 : MACHO r,b light curves of MC EBs (Faccioli+, 2007)
J/AJ/134/1488 : MG1 Variable Star Catalog (MG1-VSC) (Kraus+, 2007)
J/AJ/132/1202 : Northern Sky Variability Survey RR Lyrae (Kinemuchi+, 2006)
J/AJ/131/1044 : Chromospherically active stars in the Bulge (Drake, 2006)
J/AJ/127/1158 : QUEST RR Lyrae Survey first catalog (Vivas+, 2004)
J/AJ/126/197 : Carina projects. I. Bright variables stars (Dall'Ora+, 2003)
J/AcA/52/129 : DIA OGLE2 candidate variable stars catalog (Wozniak+, 2002)
J/AcA/51/259 : Contact binaries in OGLE-I database (Szymanski+, 2001)
J/AJ/119/1901 : ROTSE all-sky surveys for variable stars (Akerlof+, 2000)
J/ApJ/542/257 : MACHO LMC first-overtone RR Lyrae (Alcock+, 2000)
J/AcA/50/177 : All Sky Automated Survey Catalog (Pojmanski+, 2000)
J/AcA/49/223 : BVI photometry of OGLE LMC Cepheids (Udalski+, 1999)
J/AcA/48/563 : BVI phot. of OGLE SMC eclipsing binaries (Udalski+, 1998)
J/A+AS/125/313 : RR Lyrae radial velocities and [Fe/H] I. (Fernley+ 1997)
J/A+AS/121/327 : RR Lyr pulsational model (Bono+ 1997)
http://www.lpl.arizona.edu/css : : Catalina Sky Survey (CSS) home page
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [CSS_]
5- 20 A16 --- CRTS Catalina Sky Survey identifier
(JHHMMSS.ss+DDMMSS; CSS)
22- 23 I2 h RAh Hour of Right Ascension (J2000)
25- 26 I2 min RAm Minute of Right Ascension (J2000)
28- 32 F5.2 s RAs Second of Right Ascension (J2000)
34 A1 --- DE- Sign of the Declination (J2000)
35- 36 I2 deg DEd Degree of Declination (J2000)
38- 39 I2 arcmin DEm Arcminute of Declination (J2000)
41- 44 F4.1 arcsec DEs Arcsecond of Declination (J2000)
46- 50 F5.2 mag <Vmag> [11.3/20.2] Average V band magnitude from
AFD (1)
52- 62 F11.7 d Per [0.04/885]? Period (fundamental PF)
64- 68 F5.2 mag Vamp [0/15.4] Amplitude from AFD (1)
70- 71 I2 --- Cl [1/17] Numerical class based on Table 2 (2)
73 A1 --- f_Cl [a-f] Flag on Cl (3)
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Note (1): As with Drake et al. (2013ApJ...763...32D 2013ApJ...763...32D, 2013ApJ...765..154D 2013ApJ...765..154D),
the Adaptive Fourier Decomposition (AFD) method (Torrealba et al.
2014, MNRAS, submitted) was run on all candidates to determine the
best period for each source.
Note (2): Class code as follows (along with the number of periodic sources
from each class):
----------------------------------------------------------------------
Type F N Cl
(%) code
----------------------------------------------------------------------
EW 49.93 30743 1 W UMa-type (contact)
EA 7.61 4683 2 Algol-type (detached) binary
beta Lyrae 0.45 279 3 beta Lyr-type (semi-detached) binary
RRab 27.28 16797^a 4 RR Lyr-type, fundamental
RRc 8.88 5469 5 RR Lyr-type, first overtone
RRd 0.82 502 6 RR Lyr-type, several modes
Blazhko 0.36 223^a 7 RR Lyr-type, with Blazhko effect
RS CVn 2.47 1522 8 RS CVn-type
ACEP 0.10 64 9 Anomalous Cepheid (BL Boo type)
Cep-II 0.20 124 10 Type II Cepheid
HADS 0.39 242 11 High-Amplitude δ Sct
LADS 0.01 7 12 Low-Amplitude δ Sct
LPV 0.83 512 13 Long-Period Variable
ELL 0.23 143 14 Ellipsoidal variable
Hump 0.04 25 15 Erratic light curves
PCEB 0.14 85 16 Post-Common Envelope Binary
EAUP 0.25 155 17 EA variables with unknown period
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a: Includes 14362 known CSS RRab's and 149 known Blazkho types from
Drake et al. (2013ApJ...763...32D 2013ApJ...763...32D, 2013ApJ...765..154D 2013ApJ...765..154D),
as well as 396 objects observed in multiple fields.
----------------------------------------------------------------------
Note (3): Flag as follows:
a = Period is inexact based on light curve inspection.
b = An object exhibiting baseline variation due to spots.
c = Candidate ultra-short-period ellipsoidal binary.
d = Deeply eclipsing binary.
e = Light curve with unusual morphology.
f = Blended object.
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [CSS_]
5- 20 A16 --- CRTS Catalina ID (JHHMMSS.s+DDMMSS)
22- 23 I2 h RAh Hour of right ascension (J2000)
25- 26 I2 min RAm Minute of right ascension (J2000)
28- 32 F5.2 s RAs Second of right ascension (J2000)
34 A1 --- DE- Sign of declination (J2000)
35- 36 I2 deg DEd Degree of declination (J2000)
38- 39 I2 arcmin DEm Arcminute of declination (J2000)
41- 44 F4.1 arcsec DEs Arcsecond of declination (J2000)
46- 56 A11 "YYYY/MMM/DD" Date Date of maximum light (UT)
58- 64 F7.5 --- z [0.02/0.05]? Host galaxy redshift
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Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [CSS_]
5- 20 A16 --- CRTS Catalina ID (JHHMMSS.s+DDMMSS; CSS)
22- 23 I2 h RAh Hour of right ascension (J2000)
25- 26 I2 min RAm Minute of right ascension (J2000)
28- 32 F5.2 s RAs Second of right ascension (J2000)
34 A1 --- DE- Sign of declination (J2000)
35- 36 I2 deg DEd Degree of declination (J2000)
38- 39 I2 arcmin DEm Arcminute of declination (J2000)
41- 44 F4.1 arcsec DEs Arcsecond of declination (J2000)
46- 49 F4.1 mag <Vmag> [14.4/18.7] Average CSS V-band magnitude
51- 54 F4.1 mag umag [14.7/22]? SDSS-DR10 u-band magnitude
56- 59 F4.1 mag gmag [14.7/20.5]? SDSS-DR10 g-band magnitude
61- 64 F4.1 mag rmag [15.4/20.6]? SDSS-DR10 r-band magnitude
66- 69 F4.1 mag imag [14.4/20.5]? SDSS-DR10 i-band magnitude
71- 74 F4.1 mag zmag [14/19.8]? SDSS-DR10 z-band magnitude
76 A1 --- f_zmag [a] a: system exhibiting color excess
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Nomenclature notes:
Objects are named in Simbad.
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 01-Sep-2014