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J/ApJ/704/964     Spectroscopic study of Of+ supergiants    (De Becker+, 2009)

Spectroscopic study of the variability of three northern Of+ supergiants. De Becker M., Rauw G., Linder N. <Astrophys. J., 704, 964-974 (2009)> =2009ApJ...704..964D
ADC_Keywords: Stars, supergiant ; Stars, O ; Stars, early-type ; Spectral types Keywords: stars: early-type - stars: individual (HD 14947, HD 15570, HD 16691) - stars: mass loss - supergiants Abstract: The transition from early Of stars to WN-type objects is poorly understood. O-type supergiants with emission lines (OIf+) are considered to be intermediate between these two classes. The scope of this paper is to investigate the spectral variability of three Of+ supergiants. We constituted spectral time series of unprecedented quality for our targets (∼200 spectra in total), essentially in the blue domain, covering timescales from a few hours up to a few years. Temporal Variance Spectrum and Fourier analyses were performed in order to characterize their spectral variability. Description: Spectroscopic observations were collected at the Observatoire de Haute-Provence (OHP, France) during several observing runs from 2004 October to 2007 Autumn. All spectra were obtained with the Aurelie spectrograph fed by the 1.52m telescope. The detailed journal of the observations is given in Table 2. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 36 210 Journal of the observations for HD 14947, HD 15570 and HD 16691 table3.dat 51 3 Stellar parameters of HD 14947, HD 15570, and HD 16691, and estimated minimum and maximum rotation periods
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 A2 --- --- [HD] 4- 8 I5 --- HD HD star number (14947, 15570, or 16691) 10- 11 I2 --- Seq Running index number from original table of the paper 13- 20 F8.3 d HJD ? Heliocentric Julian date (-240000) 22- 31 A10 "YYYY/MM/DD" Date ? Date of observation 33- 36 A4 --- Dom [blue/red ] Spectral domain of observation
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 2 A2 --- --- [HD] 4- 8 I5 --- HD HD star number (14947, 15570, or 16691) 10- 14 A5 --- SpType MK spectral type 16- 17 I2 Msun Mass Stellar mass (1) 19- 22 F4.1 Rsun Rad Stellar radius (1) 24- 26 F3.1 10+5Lsun Lum Stellar luminosity (1) 28- 30 I3 km/s vsini Rotational velocity 31 A1 --- r_vsini [bc] Vrot reference (2) 33- 36 I4 km/s Vinf Terminal velocity V 37 A1 --- r_Vinf [ed] Velocity reference (2) 39- 42 F4.2 10-5Msun/yr Mdot Mass-loss rate 43 A1 --- r_Mdot [fd] M reference (2) 45- 47 F3.1 d Pmin Minimum rotation period 49- 51 F3.1 d Pmax Maximum rotation period
Note (1): From Martins et al. 2005A&A...436.1049M Note (2): Reference flag as follows: b = Penny L. 1996ApJ...463..737P; c = Conti & Ebbets 1977ApJ...213..438C; d = Markova et al. 2005A&A...440.1133M; e = Leitherer C. 1988ApJ...326..356L; f = Herrero et al. 2000A&A...354..193H
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 23-Nov-2011
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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