J/MNRAS/463/2125 White dwarf binary pathways survey (Parsons+, 2016)
The white dwarf binary pathways survey.
I. A sample of FGK stars with white dwarf companions.
Parsons S.G., Rebassa-Mansergas A., Schreiber M.R., Gansicke B.T.,
Zorotovic M., Ren J.J.
<Mon. Not. R. Astron. Soc., 463, 2125-2136 (2016)>
=2016MNRAS.463.2125P 2016MNRAS.463.2125P (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Stars, white dwarf ;
Photometry, ultraviolet ; Effective temperatures
Keywords: binaries: close - stars: early-type - stars: evolution - white dwarfs
Abstract:
The number of spatially unresolved white dwarf plus main-sequence star
binaries has increased rapidly in the last decade, jumping from only
∼30 in 2003 to over 3000. However, in the majority of known
systems the companion to the white dwarf is a low-mass M dwarf, since
these are relatively easy to identify from optical colours and
spectra. White dwarfs with more massive FGK type companions have
remained elusive due to the large difference in optical brightness
between the two stars. In this paper, we identify 934 main-sequence
FGK stars from the Radial Velocity Experiment survey in the Southern
hemisphere and the Large Sky Area Multi-Object Fiber Spectroscopic
Telescope survey in the Northern hemisphere, that show excess flux at
ultraviolet wavelengths which we interpret as the likely presence of a
white dwarf companion. We obtained Hubble Space Telescope ultraviolet
spectra for nine systems which confirmed that the excess is indeed
caused, in all cases, by a hot compact companion, eight being white
dwarfs and one a hot subdwarf or pre-helium white dwarf, demonstrating
that this sample is very clean. We also address the potential of this
sample to test binary evolution models and Type Ia supernovae
formation channels.
Description:
In total we have found 934 (430 from RAVE DR4, Kordopatis et al.,
2013AJ....146..134K 2013AJ....146..134K, Cat. III/272, 504 from LAMOST DR1, Luo et al.,
2015RAA....15.1095L 2015RAA....15.1095L, Cat. V/146) main-sequence FGK stars that show a
UV-excess that may be indicative of the presence of a nearby white
dwarf companion.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
rave.dat 95 430 Main-sequence stars from the RAVE survey with
UV-excesses (table A1)
lamost.dat 235 626 Main-sequence stars from the LAMOST survey
with UV-excesses (table B1)
--------------------------------------------------------------------------------
See also:
V/146 : LAMOST DR1 catalogs (Luo+, 2015)
V/149 : LAMOST DR2 catalogs (Luo+, 2016)
III/272 : RAVE 4th data release (Kordopatis+, 2013)
III/279 : RAVE 5th data release (Kunder+, 2017)
Byte-by-byte Description of file: rave.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 23 A23 --- Name Simbad name of the source
25- 40 F16.12 deg RAdeg Right ascension (J2000)
42- 56 F15.11 deg DEdeg Declination (J2000)
58- 63 F6.3 mag FUV FUV magnitude
65- 70 F6.3 mag NUV NUV magnitude
72- 77 F6.3 mag Vmag V magnitude
79- 84 F6.1 K Teff Effective temperature
86- 89 F4.2 [cm/s] logg Surface gravity
91- 95 F5.2 [-] logZ [-5/1] Metallicity
--------------------------------------------------------------------------------
Byte-by-byte Description of file: lamost.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Jname Short J name (JHHMM+DDMM)
12- 30 A19 --- Name LAMOST name (JHHMMSS.ss+DDMMSS.s)
32- 45 F14.10 deg RAdeg Right ascension (J2000)
47- 59 F13.10 deg DEdeg Declination (J2000)
61- 68 F8.5 mag NUV NUV magnitude
70- 76 F7.5 mag e_NUV rms uncertainty on NUV
78- 85 F8.5 mag FUV FUV magnitude
87- 93 F7.5 mag e_FUV rms uncertainty on FUV
95-139 A45 --- fitsname Name of the LAMOST spectrum fits file
141-145 F5.2 --- snru LAMOST signal-to-noise ratio in u band
147-154 F8.2 --- snrg LAMOST signal-to-noise ratio in g band
156-163 F8.2 --- snrr LAMOST signal-to-noise ratio in r band
165-172 F8.2 --- snri LAMOST signal-to-noise ratio in i band
174-181 F8.2 --- snrz LAMOST signal-to-noise ratio in z band
183-189 F7.2 K Teff Effective temperature
191-196 F6.2 K e_Teff rms uncertainty on Teff
198-202 F5.3 [cm/s2] logg Surface gravity
204-208 F5.3 [cm/s2] e_logg rms uncertainty on logg
210-215 F6.3 [-] [Fe/H] Metallicity
217-221 F5.3 [-] e_[Fe/H] rms uncertainty on [Fe/H]
223-229 F7.2 km/s RV Radial velocity
231-235 F5.2 km/s e_RV rms uncertainty on RV
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 14-May-2018