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J/A+A/434/1125      B-type Supergiants in the SMC            (Dufton+, 2005)

B-type Supergiants in the SMC: Chemical Compositions and comparison of static and unified models. Dufton P.L., Ryans R.S.I., Trundle, C., Lennon D.J., Hubeny I., Lanz T., Allende Prieto C. <Astron. Astrophys. 434, 1125 (2005)> =2005A&A...434.1125D
ADC_Keywords: Stars, supergiant ; Stars, B-type ; Equivalent widths Keywords: galaxies: Magellanic Clouds - stars: abundances - stars: early-type - stars: supergiants Abstract: High-resolution UCLES/AAT spectra are presented for nine B-type supergiants in the SMC, chosen on the basis that they may show varying amounts of nuclear-synthetically processed material mixed to their surface. These spectra have been analysed using a new grid of approximately 12000 non-LTE line blanketed TLUSTY model atmospheres to estimate atmospheric parameters and chemical composition. Description: Table 4 contains the adopted atomic data, equivalent widths and abundance estimates for all the metal lines observed in the SMC supergiants. It also contains data for the SMC near main sequence star AzV 304, which has been used in a differential analysis. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 60 10 Observational summary of the nine program stars and AzV 304 table4.dat 49 274 Equivalent Widths Measurements and line-by-line abundances for SMC supergiants and AzV 304
See also: J/A+A/304/347 : 40 field red supergiants in the SMC (Meliani+, 1995) J/A+A/324/435 : Chemical composition of 6 K supergiants in the SMC (Hill, 1997) J/A+AS/30/261 : UBV and Radial Velocities of SMC Supergiants (Ardeberg+, 1977) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 7 A7 -- Name Star name 11- 12 I2 h RAh Right ascension (J2000.0), from Simbad 14- 15 I2 min RAm Right ascension (J2000.0), from Simbad 17- 20 F4.1 s RAs Right ascension (J2000.0), from Simbad 22 A1 --- DE- Declination sign (J2000.0), from Simbad 23- 24 I2 deg DEd Declination (J2000.0), from Simbad 26- 27 I2 arcmin DEm Declination (J2000.0), from Simbad 29- 30 I2 arcsec DEs Declination (J2000.0), from Simbad 33- 37 F5.2 mag Vmag Visual V magnitude 39- 45 A7 --- SpType MK spectral type 49- 51 I3 --- S/N ? Signal-to-noise ratio 53- 55 I3 km/s HRV ? Heliocentric radial velocity 57- 59 I3 km/s FWHM ? FWHM of the metal absorption line spectrum
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 7 A7 -- Name Star name 9- 14 A6 --- Spec Ionic species of the element 16- 22 F7.2 0.1nm Lambda Rest wavelength of the spectral line 23 A1 --- n_Lambda [B] B: the feature is a close doublet 27- 32 F6.3 eV Exc Excitation of the lower level of the transition For close doublets the mean value is given 35- 39 F5.2 --- loggf Logarithm of the oscillator strength times degeneracy of the lower level. For doublets the value is the sum of the components 41- 44 I4 0.1pm EW Equivalent width of the star spectral lines 46- 49 F4.2 --- Abund Abundance estimate (1)
Note (1): Abundance are on the logarithmic scale H=12
Acknowledgements: Philip Dufton, p.dufton(at)
(End) Philip Dufton [QUB, United Kingdom], Patricia Vannier [CDS] 28-Jan-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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