J/MNRAS/472/4193 Radial velocities of 1453 FGK (Rebassa-Mansergas+, 2017)
The white dwarf binary pathways survey. II. Radial velocities of 1453 FGK stars
with white dwarf companions from LAMOST DR 4.
Rebassa-Mansergas A., Ren J.J., Irawati P., Garcia-berro E., Parsons S.G.,
Schreiber M.R., Gansicke B.T., Rodriguez-Gil P., Liu X., Manser C.,
Nevado S.P., Jimenez-Ibarra F., Costero R., Echevarria J., Michel R.,
Zorotovic M., Hollands M., Han Z., Luo A., Villaver E., Kong X.
<Mon. Not. R. Astron. Soc., 472, 4193-4203 (2017)>
=2017MNRAS.472.4193R 2017MNRAS.472.4193R (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Stars, double and multiple ; Stars, white dwarf ;
Radial velocities
Keywords: stars: low-mass - white dwarfs - binaries (including multiple): close
Abstract:
We present the second paper of a series of publications aiming at
obtaining a better understanding regarding the nature of type Ia
supernovae (SN Ia) progenitors by studying a large sample of detached
F, G and K main-sequence stars in close orbits with white dwarf
companions (i.e. WD+FGK binaries). We employ the Large Sky Area
Multi-Object Fibre Spectroscopic Telescope (LAMOST) data release 4
spectroscopic data base together with Galaxy Evolution Explorer
(GALEX) ultraviolet fluxes to identify 1549 WD+FGK binary candidates
(1057 of which are new), thus doubling the number of known sources. We
measure the radial velocities of 1453 of these binaries from the
available LAMOST spectra and/or from spectra obtained by us at a wide
variety of different telescopes around the globe. The analysis of the
radial velocity data allows us to identify 24 systems displaying more
than 3σ radial velocity variation that we classify as close
binaries. We also discuss the fraction of close binaries among WD+FGK
systems, which we find to be ∼10 per cent, and demonstrate that
high-resolution spectroscopy is required to efficiently identify
double-degenerate SN Ia progenitor candidates.
Description:
In order to identify close binaries, we require radial velocity
information, which we obtained from the available LAMOST DR4
spectra as well as from our own follow-up spectroscopy taken at
several different telescopes around the globe.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 291 2168 Selected 2168 spectra of 1549 unique
LAMOST DR4 WD+FGK binary candidates
table3.dat 64 6544 The radial velocities of the 1453 LAMOST
WD+FGK binary candidates
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See also:
V/153 : LAMOST DR4 catalogs (Luo+, 2018)
J/MNRAS/463/2125 : White dwarf binary pathways survey (Parsons+, 2016)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Name Name, JHHMMSS.ss+DDMMSS.s
21- 31 F11.7 deg RAdeg Right ascension (J2000)
33- 42 F10.7 deg DEdeg Declination (J2000)
44- 56 F13.10 mag FUV GALEX FUV magnitude
58- 72 F15.13 mag e_FUV GALEX FUV magnitude error
74- 86 F13.10 mag NUV GALEX NUV magnitude
88-102 F15.13 mag e_NUV GALEX NUV magnitude error
104-113 F10.4 mag mag ?=-9999 Magnitude in Band
115-127 F13.7 mag e_mag ?=-9999 Magnitude in Band error
129-135 A7 --- Band Band of magnitude (1)
137-141 A5 --- MJD LAMOST MJD number
143-162 A20 --- Plateid LAMOST Plate designation
164-174 A11 --- Spid LAMOST Sp designation
176-178 I3 --- Fiberid LAMOST Fiber number
180-185 F6.2 --- S/Nu LAMOST signal-to-noise ration in u band
187-192 F6.2 --- S/Ng LAMOST signal-to-noise ration in g band
194-199 F6.2 --- S/Nr LAMOST signal-to-noise ration in r band
201-206 F6.2 --- S/Ni LAMOST signal-to-noise ration in i band
208-213 F6.2 --- S/Nz LAMOST signal-to-noise ration in z band
215-221 F7.2 K Teff Effective temperature
223-230 F8.2 K e_Teff ?=-9999 Effective temperature error
232-237 F6.3 [cm/s2] logg Surface gravity
239-247 F9.3 [cm/s2] e_logg ?=-9999 Surface gravity error
249-254 F6.3 [-] [Fe/H] Metallicity
256-264 F9.3 [-] e_[Fe/H] ?=-9999 Metallicity error
266-291 A26 --- SClass Simbad class
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Note (1): Band of magnitude as follows
APASS_V = APASS; Henden et al., 2015, Cat. II/336
CSS_V = CSS; Drake et al., 2009, Cat. J/ApJ/696/870
GSC_V = Guiding Star Catalog, Lasker et al., 1996, Cat. I/254
SDSS_r = SDSS r band
Xuyi_r = Xuyi Schmidt Telescope Photometric Survey of the Galactic Anticentre
(XSTPS-GAS; Zhang et al., 2014RAA....14..456Z 2014RAA....14..456Z)
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d HJD Heliocentric Julian date
16- 25 F10.4 km/s RV ?=-9999 Radial velocity
27- 36 F10.4 km/s e_RV ?=-9999 Radial velocity error
38- 56 A19 --- Name Name, JHHMMSS.ss+DDMMSS.s
58- 64 A7 --- Tel Telescopes used for obtaining the spectra
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History:
From electronic version of the journal
References:
Parsons et al., Paper I 2016MNRAS.463.2125P 2016MNRAS.463.2125P, Cat. J/MNRAS/463/2125
Lagos et al., Paper III 2020MNRAS.494..915L 2020MNRAS.494..915L
(End) Patricia Vannier [CDS] 26-Jun-2020