J/A+A/623/A110 Gaia DR2. Variable stars in CMD (Gaia Collaboration+, 2019)
Gaia Data Release 2. Variable stars in the colour-absolute magnitude diagram.
Gaia Collaboration,
Eyer L., Rimoldini L., Audard M., Anderson R.I., Nienartowicz K., Glass F.,
Marchal O., Grenon M., Mowlavi N., Holl B., Clementini G., Aerts C.,
Mazeh T., Evans D.W., Szabados L., Brown A.G.A., Vallenari A., Prusti T.,
de Bruijne J.H.J., Babusiaux C., Bailer-Jones C.A.L., Biermann M.,
Jansen F., Jordi C., Klioner S.A., Lammers U., Lindegren L., Luri X.,
Mignard F., Panem C., Pourbaix D., Randich S., Sartoretti P., Siddiqui H.I.,
Soubiran C., van Leeuwen F., Walton N.A., Arenou F., Bastian U., Cropper M.,
Drimmel R., Katz D., Lattanzi M.G., Bakker J., Cacciari C., Castaneda J.,
Chaoul L., Cheek N., De Angeli F., Fabricius C., Guerra R., Masana E.,
Messineo R., Panuzzo P., Portell J., Riello M., Seabroke G.M., Tanga P.,
Thevenin F., Gracia-Abril G., Comoretto G., Garcia-Reinaldos M.,
Teyssier D., Altmann M., Andrae R., Bellas-Velidis I., Benson K.,
Berthier J., Blomme R., Burgess P., Busso G., Carry B., Cellino A.,
Clotet M., Creevey O., Davidson M., De Ridder J., Delchambre L.,
Dell'Oro A., Ducourant C., Fernandez-Hernandez J., Fouesneau M., Fremat Y.,
Galluccio L., Garcia-Torres M., Gonzalez-Nunez J., Gonzalez-Vidal J.J.,
Gosset E., Guy L.P., Halbwachs J.-L., Hambly N.C., Harrison D.L.,
Hernandez J., Hestroer D., Hodgkin S.T., Hutton A., Jasniewicz G.,
Jean-Antoine-Piccolo A., Jordan S., Korn A.J., Krone-Martins A.,
Lanzafame A.C., Lebzelter T., Loeer W., Manteiga M., Marrese P.M.,
Martin-Fleitas J.M., Moitinho A., Mora A., Muinonen K., Osinde J.,
Pancino E., Pauwels T., Petit J.-M., Recio-Blanco A., Richards P.J.,
Robin A.C., Sarro L.M., Siopis C., Smith M., Sozzetti A., Sueveges M.,
Torra J., van Reeven W., Abbas U., Abreu Aramburu A., Accart S.,
Altavilla G., Alvarez M.A., Alvarez R., Alves J., Andrei A.H.,
Anglada Varela E., Antiche E., Antoja T., Arcay B., Astraatmadja T.L.,
Bach N., Baker S.G., Balaguer-Nunez L., Balm P., Barache C., Barata C.,
Barbato D., Barblan F., Barklem P.S., Barrado D., Barros M., Barstow M.A.,
Bartholome Munoz S., Bassilana J.-L., Becciani U., Bellazzini M.,
Berihuete A., Bertone S., Bianchi L., Bienayme O., Blanco-Cuaresma S.,
Boch T., Boeche C., Bombrun A., Borrachero R., Bossini D., Bouquillon S.,
Bourda G., Bragaglia A., Bramante L., Breddels M.A., Bressan A.,
Brouillet N., Bruesemeister T., Brugaletta E., Bucciarelli B., Burlacu A.,
Busonero D., Butkevich A.G., Buzzi R., Caau E., Cancelliere R.,
Cannizzaro G., Cantat-Gaudin T., Carballo R., Carlucci T., Carrasco J.M.,
Casamiquela L., Castellani M., Castro-Ginard A., Charlot P., Chemin L.,
Chiavassa A., Cocozza G., Costigan G., Cowell S., Crifo F., Crosta M.,
Crowley C., Cuypersy J., Dafonte C., Damerdji Y., Dapergolas A., David P.,
David M., de Laverny P., De Luise F., De March R., de Martino D.,
de Souza R., de Torres A., Debosscher J., del Pozo E., Delbo M., Delgado A.,
Delgado H.E., Diakite S., Diener C., Distefano E., Dolding C., Drazinos P.,
Duran J., Edvardsson B., Enke H., Eriksson K., Esquej P.,
Eynard Bontemps G., Fabre C., Fabrizio M., Faigler S., Falcao A.J.,
Farras Casas M., Federici L., Fedorets G., Fernique P., Figueras F.,
Filippi F., Findeisen K., Fonti A., Fraile E., Fraser M., Frezouls B.,
Gai M., Galleti S., Garabato D., Garcia-Sedano F., Garofalo A., Garralda N.,
Gavel A., Gavras P., Gerssen J., Geyer R., Giacobbe P., Gilmore G.,
Girona S., Giurida G., Gomes M., Granvik M., Gueguen A., Guerrier A.,
Guiraud J., Gutierrez-Sanchez R., Haigron R., Hatzidimitriou D., Hauser M.,
Haywood M., Heiter U., Helmi A., Heu J., Hilger T., Hobbs D., Hofmann W.,
Holland G., Huckle H.E., Hypki A., Icardi V., Janssen K.,
Jevardat de Fombelle G., Jonker P.G., Juhasz A.L., Julbe F., Karampelas A.,
Kewley A., Klar J., Kochoska A., Kohley R., Kolenberg K., Kontizas M.,
Kontizas E., Koposov S.E., Kordopatis G., Kostrzewa-Rutkowska Z.,
Koubsky P., Lambert S., Lanza A.F., Lasne Y., Lavigne J.-B., Le Fustec Y.,
Le Poncin-Lafitte C., Lebreton Y., Leccia S., Leclerc N., Lecoeur-Taibi I.,
Lenhardt H., Leroux F., Liao S., Licata E., Lindstrom H.E.P., Lister T.A.,
Livanou E., Lobel A., Lopez M., Lorenz D., Managau S., Mann R.G.,
Mantelet G., Marchant J.M., Marconi M., Marinoni S., Marschalko G.,
Marshall D.J., Martino M., Marton G., Mary N., Massari D., Matijevic G.,
McMillan P.J., Messina S., Michalik D., Millar N.R., Molina D., Molinaro R.,
Molnar L., Montegrio P., Mor R., Morbidelli R., Morel T., Morgenthaler S.,
Morris D., Mulone A.F., Muraveva T., Musella I., Nelemans G., Nicastro L.,
Noval L., O'Mullane W., Ordenovic C., Ordonez-Blanco D., Osborne P.,
Pagani C., Pagano I., Pailler F., Palacin H., Palaversa L., Panahi A.,
Pawlak M., Piersimoni A.M., Pineau F.-X., Plachy E., Plum G., Poggio E.,
Poujoulet E., Prsa A., Pulone L., Racero E., Ragaini S., Rambaux N.,
Ramos-Lerate M., Regibo S., Reyle C., Riclet F., Ripepi V., Riva A.,
Rivard A., Rixon G., Roegiers T., Roelens M., Romero-Gomez M., Rowell N.,
Royer F., Ruiz-Dern L., Sadowski G., Sagrista Selles T., Sahlmann J.,
Salgado J., Salguero E., Sanna N., Santana-Ros T., Sarasso M., Savietto H.,
Schultheis M., Sciacca E., Segol M., Segovia J.C., Segransan D., Shih I-C.,
Siltala L., Silva A.F., Smart R.L., Smith K.W., Solano E., Solitro F.,
Sordo R., Soria Nieto S., Souchay J., Spagna A., Spoto F., Stampa U.,
Steele I.A., Steidelmueller H., Stephenson C.A., Stoev H., Suess F.F.,
Surdej J., Szegedi-Elek E., Tapiador D., Taris F., Tauran G., Taylor M.B.,
Teixeira R., Terrett D., Teyssandier P., Thuillot W., Titarenko A.,
Torra Clotet F., Turon C., Ulla A., Utrilla E., Uzzi S., Vaillant M.,
Valentini G., Valette V., van Elteren A., Van Hemelryck E., van Leeuwen M.,
Vaschetto M., Vecchiato A., Veljanoski J., Viala Y., Vicente D., Vogt S.,
von Essen C., Voss H., Votruba V., Voutsinas S., Walmsley G., Weiler M.,
Wertz O., Wevers T., Wyrzykowski L., Yoldas A., Zerjal M., Ziaeepour H.,
Zorec J., Zschocke S., Zucker S., Zurbach C., Zwitter T.
<Astron. Astrophys. 623, A110 (2019)>
=2019A&A...623A.110G 2019A&A...623A.110G (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Stars, variable ; Magnitudes
Keywords: stars: general - stars: variables: general - stars: oscillations -
binaries: eclipsing - surveys - methods: data analysis
Abstract:
The ESA Gaia mission provides a unique time-domain survey for more
than 1.6 billion sources with G≲21mag.
We showcase stellar variability in the Galactic colour-absolute
magnitude diagram (CaMD).We focus on pulsating, eruptive, and
cataclysmic variables, as well as on stars that exhibit variability
that is due to rotation and eclipses.
We describe the locations of variable star classes, variable object
fractions, and typical variability amplitudes throughout the CaMD and
show how variability-related changes in colour and brightness induce
'motions'. To do this, we use 22 months of calibrated photometric,
spectro-photometric, and astrometric Gaia data of stars with a
significant parallax. To ensure that a large variety of variable star
classes populate the CaMD, we crossmatched Gaia sources with known
variable stars. We also used the statistics and variability detection
modules of the Gaia variability pipeline. Corrections for interstellar
extinction are not implemented in this article.
Gaia enables the first investigation of Galactic variable star
populations in the CaMD on a similar, if not larger, scale as was
previously done in the Magellanic Clouds. Although the observed
colours are not corrected for reddening, distinct regions are visible
in which variable stars occur. We determine variable star fractions to
within the current detection thresholds of Gaia. Finally, we report
the most complete description of variability-induced motion within the
CaMD to date.
Gaia enables novel insights into variability phenomena for an
unprecedented number of stars, which will benefit the understanding of
stellar astrophysics. The CaMD of Galactic variable stars provides
crucial information on physical origins of variability in a way that
has previously only been accessible for Galactic star clusters or
external galaxies. Future Gaia data releases will enable significant
improvements over this preview by providing longer time series, more
accurate astrometry, and additional data types (time series BP and RP
spectra, RVS spectra, and radial velocities), all for much larger
samples of stars.
Description:
Time series in the G, BP, and RP bands of the selected field-of-view
transits for 224 sources that are not published in Gaia DR2, but are
plotted in Fig. 11.
An animated version of Fig. 11 is provided online and at
https://www.cosmos.esa.int/web/gaia/gaiadr2_cu7.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
list.dat 83 224 List of Gaia stars with transit light curve
lc/* . 224 Individual transit light curve
--------------------------------------------------------------------------------
See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
Byte-by-byte Description of file: list.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 I19 --- Source Unique source identifier (unique within a
particular Data Release)
21- 35 F15.11 deg RAdeg ? Gaia DR2 Barycentric right ascension (ICRS)
at Ep=2015.5
37- 51 F15.11 deg DEdeg ? Gaia DR2 Barycentric declination (ICRS)
at Ep=2015.5
53- 67 F15.11 deg RAJ2000 ? Gaia DR2 Barycentric right ascension (ICRS)
at Ep=2000.0 (added by CDS)
69- 83 F15.11 deg DEJ2000 ? Gaia DR2 Barycentric declination (ICRS)
at Ep=2000.0 (added by CDS)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: lc/*
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 16 F16.11 d TimeG Transit averaged G band observation time
(JD-2455197.5) (gtransittime_day)
18- 34 F17.14 mag Gmag Transit averaged G band magnitude (converted
from transit averaged G band flux) (g_mag)
36- 55 F20.18 mag e_Gmag Error on transit averaged G band magnitude
(gmagerror)
57- 72 F16.11 d TimeBP BP CCD transit observation time (JD-2455197.5)
(bptransittime_day)
74- 90 F17.14 mag BPmag BP band magnitude (converted from BP band flux)
(bp_mag)
92-111 F20.18 mag e_BPmag Error on the BP band magnitude (bpmagerror)
113-128 F16.11 d TimeRP RP CCD transit observation time (JD-2455197.5)
(rptransittime_day)
130-146 F17.14 mag RPmag RP band magnitude (converted from RP band flux)
(rrp_mag)
148-167 F20.18 mag e_RPmag Error on the RP band magnitude (rpmagerror)
--------------------------------------------------------------------------------
Acknowledgements:
Laurent Eyer, Laurent.Eyer(at)unige.ch
(End) Patricia Vannier [CDS] 08-Mar-2019