J/AJ/140/184 RAVE double-lined spectroscopic binaries (Matijevic+, 2010)
Double-lined spectroscopic binary stars in the Radial Velocity Experiment
survey.
Matijevic G., Zwitter T., Munari U., Bienayme O., Binney J.,
Bland-Hawthorn J., Boeche C., Campbell R., Freeman K.C., Gibson B.,
Gilmore G., Grebel E.K., Helmi A., Navarro J.F., Parker Q.A.,
Seabroke G.M., Siebert A., Siviero A., Steinmetz M., Watson F.G.,
Williams M., Wyse R.F.G.
<Astron. J., 140, 184-195 (2010)>
=2010AJ....140..184M 2010AJ....140..184M
ADC_Keywords: Binaries, spectroscopic ; Surveys ; Effective temperatures
Keywords: binaries: spectroscopic - methods - data analysis - surveys
Abstract:
We devise a new method for the detection of double-lined binary stars
in a sample of the Radial Velocity Experiment (RAVE) survey spectra.
The method is both tested against extensive simulations based on
synthetic spectra and compared to direct visual inspection of all RAVE
spectra. It is based on the properties and shape of the
cross-correlation function, and is able to recover ∼80% of all
binaries with an orbital period of order 1 day. Systems with periods
up to 1 yr are still within the detection reach. We have applied the
method to 25,850 spectra of the RAVE second data release and found 123
double-lined binary candidates, only eight of which are already marked
as binaries in the SIMBAD database. Among the candidates, there are
seven that show spectral features consistent with the RS CVn type
(solar type with active chromosphere) and seven that might be of W UMa
type (over-contact binaries). One star, HD 101167, seems to be a
triple system composed of three nearly identical G-type dwarfs. The
tested classification method could also be applicable to the data of
the upcoming Gaia mission.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 87 102 SB2 candidate spectra with solutions
table2.dat 90 27 Peculiar and low S/N SB2 candidate spectra
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See also:
III/265 : RAVE 3rd data release (Siebert+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Star name, as in RAVE catalog (III/265)
17 A1 --- n_Name [ab*] Note on Name (1)
19- 27 F9.5 deg RAdeg Right ascension in decimal degrees (J2000)
29- 37 F9.5 deg DEdeg Declination in decimal degrees (J2000)
39- 46 A8 "YYYYMMDD" Date Observation date
48- 54 A7 --- Field Name of RAVE field
56- 58 I3 --- FNum Fiber number
60- 61 I2 --- S/N Signal-to-noise ratio
63- 67 F5.1 km/s DVorb Difference between red and blue
Doppler-shifted lines
69- 72 F4.1 km/s e_DVorb rms uncertainty on DVorb
74- 77 F4.2 --- eta [0.2/1] Luminosity ratio η of the less
luminous to the more luminous component
79- 82 I4 K Teff1 Effective temperature of blueshifted component
83 A1 --- --- [/]
84- 87 I4 K Teff2 Effective temperature of redshifted component
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Note (1): Notes as follows:
a = A known binary star, Heintz (1992, Cat. J/ApJS/83/351)
b = DZ Hya, eclipsing binary of the Algol type
* = spectra observed twice.
(the second observation of object T8045009671 is listed in Table 2)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 16 A16 --- Name Name (1)
17 A1 --- n_Name [*c] Note on Name (2)
19- 27 F9.5 deg RAdeg Right ascension in decimal degrees (J2000)
29- 37 F9.5 deg DEdeg Declination in decimal degrees (J2000)
39- 46 A8 "YYYYMMDD" Date Observation date
48- 54 A7 --- Field Name of RAVE field
56- 58 I3 --- FNum RAVE fiber number
60- 61 I2 --- S/N Signal-to-noise ratio
63- 90 A28 --- Com Comment
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Note (1): The second observation of C1245296_302913 is not listed since its
spectrum could not be recognized as a potential SB2.
Note (2): Notes as follows:
* = spectra observed twice
c = The wavelength calibration of the spectrum of O00337_2343045 is wrong, but
it can nevertheless still be unambiguously confirmed as an SB2 candidate
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 08-Jun-2012