J/AcA/66/433 Gaia DR1 and OGLE variable stars (Udalski+, 2016)
Gaia and variable stars.
Udalski A., Soszynski I., Skowron D.M., Skowron J., Pietrukowicz P.,
Mroz P., Poleski R., Szymanski M.K., Kozlowski S., Wyrzykowski L.,
Ulaczyk K., Pawlak M.
<Acta Astron. 66, 433-453 (2016)>
=2016AcA....66..433U 2016AcA....66..433U (SIMBAD/NED BibCode)
ADC_Keywords: Magellanic Clouds ; Stars, variable ; Cross identifications
Keywords: stars: variables: Cepheids - stars: variables: RR Lyr -
Magellanic Clouds
Abstract:
We present a comparison of the Gaia DR1 samples of pulsating variable
stars - Cepheids and RR Lyr type - with the OGLE Collection of
Variable Stars aiming at the characterization of the Gaia mission
performance in the stellar variability domain. Out of 575 Cepheids and
2322 RR Lyr candidates from the Gaia DR1 samples located in the OGLE
footprint in the sky, 559 Cepheids and 2302 RR Lyr stars are genuine
pulsators of these types. The number of misclassified stars is low
indicating reliable performance of the Gaia data pipeline. The
completeness of the Gaia DR1 samples of Cepheids and RR Lyr stars is
at the level of 60-75% as compared to the OGLE Collection dataset.
This level of completeness is moderate and may limit the applicability
of the Gaia data in many projects.
Description:
To assess the Gaia dataset of Cepheids and RR Lyr stars presented in
the Gaia DR1 (Clementini et al., 2016A&A...595A.133C 2016A&A...595A.133C, Cat. I/337) we
cross-identified the sample of 3194 variable stars presented on the
final Gaia pipeline list (599 Cepheid and 2595 RR Lyr candidates) with
the OGLE detected objects using RA/DEC coordinates provided within
Gaia DR1.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 43 517 Cross-identification table of OCVS and Gaia Cepheid
table3.dat 43 2143 Cross-identification table of OCVS and Gaia RR Lyrae
table2.dat 52 36 Misclassified variables from the Gaia lists
located in the OGLE-IV footprint in the sky
table5.dat 52 46 Misclassified variables from the Gaia lists
located outside the OGLE-IV footprint in the sky
--------------------------------------------------------------------------------
See also:
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
Byte-by-byte Description of file: table1.dat table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 24 A24 --- OGLE OGLE name
25- 43 I19 --- Gaia Gaia source ID
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Type Type of variable (Cepheids or RR Lyrae)
10- 28 I19 --- Gaia Gaia DR1 source ID
30- 37 F8.5 d Per Period
39- 44 F6.3 mag Gmag Gaia DR1 magnitude
46- 52 A7 --- OType OGLE type
--------------------------------------------------------------------------------
History:
From electronic version of the journal and
ftp://ftp.astrouw.edu.pl/ogle/ogle4/GAIA/
(End) Patricia Vannier [CDS] 20-Apr-2018