J/A+A/400/939 Stellar parameters of 115 HQS sdB stars (Edelmann+, 2003)
Spectral analysis of sdB stars from the Hamburg Quasar Survey.
Edelmann H., Heber U., Hagen H.-J., Lemke M., Dreizler S., Napiwotzki R.,
Engels D.
<Astron. Astrophys. 400, 939 (2003)>
=2003A&A...400..939E 2003A&A...400..939E
ADC_Keywords: Stars, horizontal branch ; Stars, subdwarf ; Abundances ;
Effective temperatures ; Radial velocities ; Stars, distances
Keywords: stars: abundances - stars: atmospheres - stars: distances -
stars: horizontal-branch - stars: subdwarfs
Description:
We present the results of a spectral analysis of a large sample of
subdwarf B stars selected from follow-up observations of candidates
from the Hamburg Quasar Survey. Table 4 summarizes the results
(effective temperatures, gravities, and helium abundances) of our
analysis. Additionally, the equatorial and galactical coordinates, the
B magnitudes and extinctions, the derived radial velocities, the
absolute visual magnitudes, the distances from earth and from the
galactic plane, and the references are given for all programme stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 126 115 Stellar parameters for 115 HQS sdB stars
obsrun.dat 100 15 Details of HQS sdB runs
refs.dat 386 13 References
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See also:
J/A+AS/128/507 : The Hamburg Quasar Survey. II. (Engels+ 1998)
J/A+AS/134/483 : The Hamburg Quasar Survey. III. (Hagen+ 1999)
J/A+AS/115/235 : The Hamburg/ESO survey for bright QSOs. II. (Reimers+, 1996)
J/A+A/358/77 : Hamburg/ESO survey for bright QSOs. III. (Wisotzki+, 2000)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HS]
3- 11 A9 --- HS HQS name (HHMM+DDMM)
13- 19 A7 --- SpType Spectral type
21- 22 I2 h RAh Right ascension (B1950)
24- 25 I2 min RAm Right ascension (B1950)
27- 30 F4.1 s RAs Right ascension (B1950)
32 A1 --- DE- Declination sign (B1950)
33- 34 I2 deg DEd Declination (B1950)
36- 37 I2 arcmin DEm Declination (B1950)
39- 40 I2 arcsec DEs Declination (B1950)
42- 47 F6.2 deg GLON Galactic longitude (B1950)
49- 54 F6.2 deg GLAT Galactic latitude (B1950)
56- 57 A2 --- Run Observing run, in obsrun.dat file
59- 62 F4.1 K Teff ? Effective temperature (1)
64- 66 F3.1 K e_Teff ? rms uncertainty on Teff (1)
68- 71 F4.2 [cm/s2] logg ? Gravity surface (1)
73- 75 F3.1 [cm/s2] e_logg ? rms uncertainty on logg (1)
77- 80 F4.1 --- log(nHe/nH) ? He to H column densities ratio (1)
82- 84 F3.1 --- e_log(nHe/nH) ? rms uncertainty on log(nHe/nH) (1)
86- 89 F4.1 mag Bmag B magnitude
91- 94 F4.2 mag E(B-V) Extinction
96- 99 I4 km/s RV ? Radial velocity (2)
101-103 F3.1 mag VMAG ? Visually absolute magnitude (3)
105-108 F4.1 pc Dist ? Distance from earth (1)
110-113 F4.1 pc Z ? Distance from galactic plane (1)
115-124 A10 --- r_SpType References, separated by commas,
in refs.dat file (4)
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Note (1): Only given for non-binaries
Note (2): Only given for stars with a spectral resolution equal
or better than 3.6Å.
Note (3): Only given for sdB, sdOB, and non-binary stars
Note (4): Independent discoveries as UV excess objects
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Byte-by-byte Description of file: obsrun.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- Run Observing run
5- 8 I4 yr Obss.Y Observing year
10- 11 I2 "month" Obss.M Observing month (start of run)
13- 14 I2 d Obss.D ? Observing day (start of run, start of night)
16- 19 I4 yr Obse.Y Observing year
21- 22 I2 "month" Obse.M Observing month (end of run)
24- 25 I2 d Obse.D ? Observing day (end of run, start of night)
28- 31 A4 --- Telesc Telescope
33- 37 A5 --- Instr Instrument
40- 42 I3 0.1nm/mm rdblue Reciprocal Dispersion (blue part)
44- 46 I3 0.1nm/mm rdred ? Reciprocal Dispersion (red part) (2)
49- 51 F3.1 0.1nm srmi Spectral Resolution (min) (3)
53- 55 F3.1 0.1nm srma Spectral Resolution (max) (3)
59- 62 I4 0.1nm wcbs Wavelength coverage (blue part start)
64- 67 I4 0.1nm wcbe Wavelength coverage (blue part end)
69- 72 I4 0.1nm wcrs ? Wavelength coverage (red part start) (2)
74- 77 I4 0.1nm wcre ? Wavelength coverage (red part end) (2)
80-100 A21 --- Obser Observer
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Note (2): Only given if present
Note (3): Due to varying seeing conditions the spectral resolution sometimes
also varies
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Ref Reference core
6- 24 A19 --- BibCode BibCode
26- 46 A21 --- Aut Author's name
48-387 A340 --- Com Comments, including the title of the reference
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Acknowledgements: Heinz Edelmann
(End) H. Edelmann [Dr. Remeis-Obs., Germany], Patricia Bauer [CDS] 06-Feb-2003