J/MNRAS/371/252 Southern B and Be stars (Levenhagen+, 2006)
Spectroscopic analysis of southern B and Be stars.
Levenhagen R.S., Leister N.V.
<Mon. Not. R. Astron. Soc., 371, 252-262 (2006)>
=2006MNRAS.371..252L 2006MNRAS.371..252L
ADC_Keywords: Stars, Be ; Rotational velocities ; Effective temperatures ;
Stars, ages
Keywords: line: profiles - techniques: spectroscopic -
stars: emission-line, Be - stars: fundamental parameters -
stars: rotation
Abstract:
Spectroscopic monitoring of 141 southern field B-type stars, 114 of
them known to exhibit the Be phenomenon, allowed the estimation of
their projected rotational velocities, effective temperatures and
superficial gravities from both line and equivalent width fitting
procedures. Stellar ages, masses and bolometric luminosities were
derived from internal structure models. Without taking into account
the effects of gravity darkening, we note the occurrence of the Be
phenomenon in later stages of main-sequence phase.
Description:
High-resolution and signal-to-noise ratio (S/N) spectroscopic
observations were carried out in the Southern hemisphere both with
FEROS spectrograph associated to the 1.52-m telescope at ESO/La Silla
(Chile) and with Coude spectrograph at the 1.60-m telescope of MCT/LNA
(Brazil). We made observations of B and Be stars over five years, from
1999 October to 2003 July.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 70 141 *Spectroscopic observations of target objects
table2.dat 106 141 Photospheric parameters of target stars
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Note on table1.dat: There was a mistake in published table1, HD 37935 and 174513
were present in the table and not analysed in this paper, and
HD 97991 and 125924 were not present in the table but analysed.
Data of HD 37935 and 174513 have been erased and data of HD 97991 and 125924
added (data from the author).
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See also:
J/A+A/393/965 : Intrinsic freq. of slowly pulsating B stars (de Cat+, 2002)
J/A+A/368/912 : Polarization & rotational velocities of Be stars (Yudin, 2001)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 A2 --- --- [HD]
4- 9 I6 --- HD HD number
11- 16 F6.2 deg GLON Galactic longitude
18- 23 F6.2 deg GLAT Galactic latitude
25- 26 I2 h RAh Right ascension (J2000)
28- 29 I2 min RAm Right ascension (J2000)
31- 32 I2 s RAs Right ascension (J2000)
34 A1 --- DE- Declination sign (J2000)
35- 36 I2 deg DEd Declination (J2000)
38- 39 I2 arcmin DEm Declination (J2000)
41- 42 I2 arcsec DEs Declination (J2000)
44- 52 A9 --- Tel Telescope
54- 60 A7 "YYYY/MM" ObsDate Observation date
62- 65 I4 0.1nm lamL Wavelength range (lower limit)
66 A1 --- --- [-]
67- 70 I4 0.1nm lamU Wavelength range (upper limit)
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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- 2 A2 --- --- [HD]
4- 9 I6 --- HD HD number
11- 13 I3 km/s vsini Rotational velocity
15- 16 I2 km/s e_vsini rms uncertainty on vsini
18- 22 I5 K Teff Effective temperature
24- 26 I3 K e_Teff rms uncertainty on Teff
28- 31 F4.2 [cm/s2] logg Surface gravity
33- 36 F4.2 [cm/s2] e_logg rms uncertainty on logg
38- 41 F4.2 [yr] logAge Age
43- 46 F4.2 [yr] e_logAge rms uncertainty on logAge
48- 51 F4.2 [solLum] logL Luminosity
53- 56 F4.2 [solLum] e_logL rms uncertainty on logL
58- 62 F5.2 [solMass] logMass Mass
64- 67 F4.2 [solMass] e_logMass rms uncertainty on logMass
69- 80 A12 --- SpTypeS Simbad spectral type
82- 91 A10 --- SpType This work spectral type
93- 96 I4 K DTeff ? Deviation in Effective temperature due to
the effects of rapid rotation (1)
98-101 F4.2 [cm/s] Dlogg ? Deviation in gravity surface due to the
effects of rapid rotation (1)
103-106 F4.2 --- tau/tauMS ? Fractional age (1)
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Note (1): Ratio of age to main sequence liftime, only for Be stars
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 28-Nov-2006