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J/A+A/423/133       Spectral indexes in HII galaxies         (Westera+, 2004)

Stellar populations in HII galaxies. Westera P., Cuisinier F., Telles E., Kehrig C. <Astron. Astrophys., 423, 133-146 (2004)> =2004A&A...423..133W
ADC_Keywords: Galaxies, spectra ; H II regions Keywords: catalogs - stars: atmospheres - HII regions - galaxies: evolution - galaxies: starburst - galaxies: stellar content Abstract: We analyse the stellar content of a large number of HII galaxies from the continua and absorption features of their spectra using population synthesis methods, in order to gain information about the star formation histories of these objects. We find that all galaxies of our sample contain an old stellar population (≥1Gyr) that dominates the stellar mass, and in a majority of these we also found evidence for an intermediate-age population ≥50Myr apart from the presently bursting, ionizing young generation ≤107yr. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file position.dat 55 113 *Galaxy positions (from Simbad or NED) tablea1.dat 78 201 Indices of individual spectra
Note on position.dat: data not present in the published table, were added at CDS from a comparison of the names with Simbad or NED data-bases.
Byte-by-byte Description of file: position.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Galaxy Galaxy name 16- 17 I2 h RAh Right ascension (J2000) 19- 20 I2 min RAm Right ascension (J2000) 22- 25 F4.1 s RAs Right ascension (J2000) 27 A1 --- DE- Declination sign (J2000) 28- 29 I2 deg DEd Declination (J2000) 31- 32 I2 arcmin DEm Declination (J2000) 34- 35 I2 arcsec DEs Declination (J2000) 37- 55 A19 --- SName Simbad name
Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Galaxy Galaxy name 15- 31 A17 --- Spectra Name of the spectra, when more than one by galaxy (1) 35- 36 A2 --- Type [re in] Type of spectra (2) 38- 43 F6.3 --- Cont Continuum index 45- 50 F6.3 --- D(4000) 4000Å break spectral index 52- 57 F6.3 --- H+K(Ca) H+K(Ca) spectral index 59- 64 F6.3 --- Hdelta Hδ spectral index 66- 71 F6.3 --- Fe4531 Fe4531 spectral index 73- 78 F6.3 mag Mgb Mgb spectral index (5162-5193Å)
Note (1): In those cases where the apertures were centered on a secondary knot, an indication between brackets about the position of the aperture, where "Cent'' stands for the centre of the galaxy, and the abbreviations "N'', "E'', "S'', and "W'' (and "NE'' etc.) indicate that the aperture was positioned at knots at the North, East, South or West of the galaxy. Note (2): Type of spectrum as: in: integrated spectra re: spectra of individual regions
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 26-Aug-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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