J/AN/340/386 Catalogue of spectroscopic binary candidate stars (Jack, 2019) ================================================================================ A catalogue of spectroscopic binary candidate stars derived from a comparison of Gaia DR2 with other radial velocity catalogues. Jack D. =2019AN....340..386J (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Binaries, spectroscopic ; Radial velocities Keywords: binaries: spectroscopic - catalogs - techniques: radial velocities Abstract: Using the recently published Gaia second data release that includes measurements of the mean radial velocity of about 7.2 million stars, we performed a systematic comparison with other existing radial velocity catalogs to search for variations in the radial velocity measurements, with the goal that detected differences may indicate that these stars are possibly spectroscopic binary stars with only one visible component (SB1). We present a catalog of spectroscopic binary candidate stars containing 35246 stars, compiled to encourage follow-up observations obtaining spectra at different epochs of orbits of these stars to verify their binarity and to study these systems using radial velocity curves. Comparing the Gaia DR2 database with the K-M dwarf catalog, we found 16 stars that show radial velocity variations. In a comparison with the Pulkovo radial velocity catalog of Hipparcos stars, we identified a total of 539 SB1 candidate stars. In the largest radial velocity catalog available, the radial velocity experiment (RAVE) catalog, we found a total of 34691 stars that show radial velocity variations when compared to the Gaia DR2 data. Description: Radial velocity measurements of spectroscopic binary candidate stars based on already published values by Gaia DR2, RAVE 5th DR, KM Dwarf catalogue and the Pulkovo compilation. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file km_rv.dat 51 35 KM catalog (Sperauskas et al., 2016, Cat. J/A+A/596/A116) pulk_rv.dat 31 539 Pulkovo compilation (Gontcharov, 2006, Cat. III/252) rave_rv.dat 63 36844 RAVE 5th data release (Kunder e tal., 2017, Cat. III/279) -------------------------------------------------------------------------------- See also: I/345 : Gaia DR2 (Gaia Collaboration, 2018) III/279 : RAVE 5th data release (Kunder+, 2017) III/252 : 35493 HIP stars Pulkovo radial velocities (Gontcharov, 2006) J/A+A/596/A116 : Radial velocities of K-M dwarfs (Sperauskas+, 2016) Byte-by-byte Description of file: km_rv.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 15 A15 --- Star Star name 17- 22 F6.1 km/s KMRV Radial velocity of the KM catalogue 24- 26 F3.1 km/s e_KMRV Error of the radial velocity 28- 38 F11.3 d KMHJD Julian Date of observation 40- 45 F6.2 km/s GaiaRV Radial velocity of Gaia DR2 47- 51 F5.2 km/s e_GaiaRV Error of the radial velocity of Gaia DR2 -------------------------------------------------------------------------------- Byte-by-byte Description of file: pulk_rv.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 I6 --- HIP HIP number of the stars 8- 13 F6.1 km/s PRV Radial velocity of the Pulkovo catalogue 15- 17 F3.1 km/s e_PRV Error of the radial velocity 19- 25 F7.2 km/s GaiaRV Radial velocity of Gaia DR2 27- 31 F5.2 km/s e_GaiaRV Error of the radial velocity of Gaia DR2 -------------------------------------------------------------------------------- Byte-by-byte Description of file: rave_rv.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 16 A16 --- RAVE RAVE designation (JHHMMSS.S+DDMMSS) 18- 26 F9.3 km/s RAVERV Radial velocity of the RAVE catalogue 28- 34 F7.3 km/s e_RAVERV Error of the radial velocity 36- 49 F14.8 d RAVEMJD Modified Julian date of observation 51- 57 F7.2 km/s GaiaRV Radial velocity of Gaia DR2 59- 63 F5.2 km/s e_GaiaRV Error of the radial velocity of Gaia DR2 -------------------------------------------------------------------------------- Acknowledgements: Dennis Jack, dennis(at)astro.ugto.mx ================================================================================ (End) Patricia Vannier [CDS] 09-Aug-2019