J/A+A/674/A18 Gaia DR3. The RR Lyrae sample (Clementini+, 2023)
Gaia Data Release 3: Specific processing and validation of all-sky RR Lyrae and
Cepheid stars: The RR Lyrae sample.
Clementini G., Ripepi V., Garofalo A. Molinaro R., Muraveva T., Leccia S.,
Rimoldini L., Holl B., Jevardat de Fombelle G., Sartoretti P., Marchal O.,
Audard M., Nienartowicz K., Andrae R., Marconi M., Szabados L.,
Evans D.W., Lecoeur-Taibi I., Mowlavi N., Musella I., Eyer L.
<Astron. Astrophys. 674, A18 (2023)>
=2023A&A...674A..18C 2023A&A...674A..18C (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Optical ; Milky Way ; Magellanic Clouds
Keywords: star: general - stars: oscillations - stars: variables: RR Lyrae -
stars: variables: Cepheids - Magellanic Clouds -
methods: data analysis
Abstract:
Gaia DR3 publishes a catalogue of full-sky RR Lyrae stars (RRLs)
observed during the initial 34 months of science operations, that were
processed through the Specific Object Study (SOS) pipeline for
Cepheids and RRLs (SOS Cep&RRL) observed by Gaia. The SOS Cep&RRL
validation of DR3 candidate RRLs relies on tools that include the
Period (P) G-amplitude diagram and the P-phi21 and -phi31 parameters
of the G light curve Fourier decomposition, based on a sample of bona
fide known RRLs (Gold Sample). The SOS processing led to a catalogue
of 271779 RRLs listed in the vari_rrlyrae table of DR3. By dropping
sources that clearly are contaminants, or have an uncertain
classification we produce the final catalogue of SOS-confirmed DR3
RRLs containing 270905 sources (174947 fundamental mode, 93952 first
overtone and 2006 double-mode RRLs) confirmed and fully characterised
by the SOS Cep&RRL pipeline. They are distributed all over the sky,
including 95 globular clusters and 25 Milky Way companions. RVS time
series radial velocities are also published for 1096 RRLs and 799
Cepheids. Of the 270905 DR3 RRLs, 200294 are already known in the
literature and 70611 are, to the best of our knowledge, new
discoveries by Gaia. An estimate of the interstellar absorption is
published for 142660 fundamental-mode RRLs from a relation based on
the G-band amplitude and the pulsation period. Metallicities derived
from the Periods and the phi31 Fourier parameters of the G-light
curves are also released for 133559 RRLs. The final Gaia DR3 catalogue
of confirmed RRLs almost doubles the DR2 RRLs catalogue. An increase
of statistical significance, a better characterization of the RRLs
pulsational and astrophysical parameters, and the improved astrometry
published with Gaia EDR3, make the SOS Cep&RRL DR3 sample, the
largest, most homogeneous and parameter-rich catalogue of All-Sky RRLs
published so far.
Description:
The DR3 RR Lyrae catalogue along with known RR Lyrae stars confirmed
with the SOS pipeline, but for which the SOS periods differ from the
literature periods, increases the census of RR Lyrae stars in our
Galaxy and its close companions to about 370 000 within the limiting
magnitude of Gaia
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 55 121 Correct Pf and P1O periods for 121 double-mode
RR Lyrae stars in the
Gaia DR3 vari_rrlyrae table
table5.dat 32 521 List sources in the Gaia DR3 vari_rrlyrae table
that are classified as galaxies or
non-single/extended objects by other DPAC
pipelines
table6.dat 24 282 List sources in the Gaia DR3 vari_rrlyrae table
that are classified as QSO by other DPAC
pipelines
table7.dat 19 80 Bona fide RRab stars in the Gaia DR3
vari_rrlyrae table that are identified as
non-single star by the SEAPipe pipeline
table8.dat 76 72 List sources in the Gaia DR3 vari_rrlyrae table
that are re-classified as ECLs or possible
ECLs, and variable stars with poor light curves
and uncertain classification
table9.dat 19 888 Gaia DR3 source ids of objects likely
misclassified as RR Lyrae stars
tablea1.dat 60 51 Source-level parameters of 51 Cepheids stars for
which this information is lacking in the
gaia_source table of the Gaia DR3 archive
tablea2.dat 63 45 Source-level parameters of 45 RR Lyrae stars for
which this information is lacking in the
gaia_source table of the Gaia DR3 archive
figa2.pdf 512 27455 Light curves
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See also:
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
I/358 : Gaia DR3 Part 4. Variability (Gaia Collaboration, 2022)
J/A+A/674/A17 : Gaia Data Release 3. The Cepheids sample (Ripepi+, 2023)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- GaiaDR3 Gaia DR3 source identifier
21- 37 F17.15 d Pf Fundamental pulsation period
39- 55 F17.15 d P1O First-overtone pulsation period
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Byte-by-byte Description of file: table5.dat table6.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- GaiaDR3 Gaia DR3 source identifier
22- 32 A11 --- TentativeClass Tentative classification
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Byte-by-byte Description of file: table7.dat table9.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- GaiaDR3 Gaia DR3 source identifier
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Byte-by-byte Description of file: table8.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- GaiaDR3 Gaia DR3 source identifier
22- 55 A34 --- Class Classification in type
58- 76 A19 --- Survey Survey
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Byte-by-byte Description of file: tablea1.dat tablea2.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- GaiaDR3 Gaia DR3 source identifier
22- 25 I4 K RVtempTeff Effective temperature of the synthetic
reference template (rvtemplateteff)
28- 30 F3.1 [cm/s2] RVtemplogg logg of the synthetic reference template
(rvtemplatelogg)
32- 36 F5.2 [-] RVtemp[Fe/H] Metallicity [Fe/H] of the synthetic
reference template (rvtemplatefeh)
40- 42 I3 --- r_RVatmParam Atmospheric parameters of the synthetic
reference template (rvatmparam_origin)
44- 50 F7.4 mag GRVSmag Gaia's Radial Velocity Spectrometer
magnitude (grvs_mag)
53- 57 F5.3 mag e_GRVSmag Gaia's Radial Velocity Spectrometer
magnitude error (grvsmagerror)
60- 63 A4 --- Flag Radvel invalid reason (1)
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Note (1): radVelInvalidReason provides the reason why the source-level
parameters are excluded from publication as follows:
D = Double-lined detected in more than 10% of the epochs
P = variations in the spectral-sample flux from epoch to epoch
H = hot star
CF = bad cross-correlation-function
T = potential template mismatch; E=the error of the all-epochs combined
radial velocity is larger than 40km/s (see 2022gdr3.reptE...6S,
Chap. 6, for details).
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Acknowledgements:
Gisella Clementini, gisella.clementini(at)inaf.it
(End) Patricia Vannier [CDS] 06-Dec-2022