J/MNRAS/382/1377 SDSS WD main-sequence binaries (Rebassa-Mansergas+, 2007)
Post-common-envelope binaries from SDSS.
I. 101 white dwarf main-sequence binaries with multiple
Sloan Digital Sky Survey spectroscopy.
Rebassa-Mansergas A., Gansicke B.T., Rodriguez-Gil P., Schreiber M.R.,
Koester D.
<Mon. Not. R. Astron. Soc., 382, 1377-1393 (2007)>
=2007MNRAS.382.1377R 2007MNRAS.382.1377R
ADC_Keywords: Stars, double and multiple ; Stars, dwarfs ; Stars, white dwarf
Keywords: accretion, accretion discs - binaries: close -
novae, cataclysmic variables
Abstract:
We present a detailed analysis of 101 white dwarf main-sequence
binaries (WDMS) from the Sloan Digital Sky Survey (SDSS) for which
multiple SDSS spectra are available.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 62 261 WD-MS in our sample that did not show a significant
RV variation between their different SDSS spectra
(123 stars)
table3.dat 105 258 WD masses, effective temperatures, surface
gravities, spectral types and distances (112 stars)
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See also:
J/AJ/129/2428 : M dwarf-white dwarf binary systems (Silvestri+, 2005)
J/ApJS/167/40 : SDSS4 confirmed white dwarfs catalog (Eisenstein+, 2006)
II/282 : SDSS Photometric Catalog, Release 6 (Adelman-McCarthy+, 2007)
http://www.sdss.org/ : SDSS Home Page
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [SDSS]
5- 23 A19 --- SDSS SDSS designation (JHHMMSS.ss+DDMMSS.s) of WD
25- 36 F12.4 d HJD Heliocentric Julian Date of the spectrum
38 A1 --- f_SDSS [y/n] composed spectrum (1)
40- 45 F6.1 km/s RV(Na) ? NaI (8183.27,8194.81) absorption double
radial velocity
47- 50 F4.1 km/s e_RV(Na) ? rms uncertainty on RV(Na)
52- 57 F6.1 km/s RV(Ha) ? Hα emission radial velocity
59- 62 F4.1 km/s e_RV(Ha) ? rms uncertainty on RV(Ha)
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Note (1): yes (y) or no (n) those spectra which are composed of subspectra
taken in different nights
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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- 4 A4 --- --- [SDSS]
5- 23 A19 --- SDSS SDSS designation (JHHMMSS.ss+DDMMSS.s)
25- 29 I5 --- MJD SDSS MJD value
31- 34 I4 --- Plate SDSS Plate value
36- 39 I4 --- Fiber SDSS Fiber value
41- 45 I5 K Teff ?=- Wide dwarf effective temperature
47- 51 I5 K e_Teff ?=- rms uncertainty on Teff
53- 56 F4.2 --- logg ?=- Wide dwarf surface gravity
58- 61 F4.2 --- e_logg ?=- rms uncertainty on logg
63- 66 F4.2 solMass Mass ?=- Wide dwarf mass
68- 71 F4.2 solMass e_Mass ?=- rms uncertainty on Mass
73- 76 I4 pc Dist ?=- Distance to the wide dwarf
78- 81 I4 pc e_Dist ?=- rms uncertainty on Dist
83- 84 A2 --- Sp2 ?=- MK spectral type of the secondary star
86- 89 I4 pc Dist2 ?=- Distance to the secondary star
91- 93 I3 pc e_Dist2 ?=- rms uncertainty on Distsec
95-101 A7 --- n_SDSS System already studied or resolved (1)
103-105 A3 --- Notes Individual Notes (2)
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Note (1): Flags as follows:
e = systems which have been studied previously by
Eisenstein et al (2006, Cat. J/ApJS/167/40)
s = systems which have been studied previously by
Silvestri et al. (2006, Cat. J/AJ/131/1674)
re = systems whose binary components are resolved in their SDSS images
Note (2): Notes as follows:
1 = Probably K secondary star
2 = Some blue excess, WD?
3 = Teff less than 6000k
4 = DC white dwarf
5 = magnetic WD? No clear evidence for secondary star
6 = Chance superposition of an M and a G stars. No WD
7 = Blue star close to a very bright red star in the SDSS image.
Bad background/scattered light subtraction?
8 = Diffuse Halpha emission in the sky area (Eridanus shell),
no clear evidence for secondary star
9 = DO white dwarf
10 = Extended emission
11 = Blue flux differ by a factor two between the spectra
12 = Blue flux differ by a factor five. Eclipsing? Calibration problems?
13 = Something wrong in the SDSS image on cas.sdss.org: too many
apparently blue objects that have faint u magnitudes
14 = Resolved binary, fit depends on the fiber placement
15 = Single WD
16 = At least one broken spectrum
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 02-Feb-2009