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J/A+A/502/1015      OB associations in IC 1613               (Garcia+, 2009)

The young stellar population of IC 1613. I. A new catalogue of OB associations. Garcia M., Herrero A., Vicente B., Castro N., Corral L.J., Rosenberg A., Monelli M. <Astron. Astrophys., 502, 1015-1041 (2009)> =2009A&A...502.1015G
ADC_Keywords: Galaxies, nearby ; Associations, stellar Keywords: stars: early-type - Galaxy: stellar content - galaxies: photometry - galaxies: individual: IC 1613 - astrometry - catalogs Abstract: Determining the parameters of massive stars is crucial to understand many processes in galaxies and the Universe, since these objects are important sources of ionization, chemical enrichment and momentum. 10m class telescopes enable us to perform detailed quantitative spectroscopic analyses of massive stars in other galaxies, sampling areas of different metallicity. Relating the stars to their environment is crucial to understand the physical processes ruling their formation and evolution. In preparation for the new instrumentation planned for the Gran Telescopio CANARIAS (GTC), our goal is to build a list of massive star candidates in the metal-poor irregular galaxy IC 1613. The catalogue must have very high astrometric accuracy, suitable for the current generation of multi-object spectrographs. A census of OB associations in this galaxy is also needed, to provide important additional information about the age and environment of the candidate OB stars. Description: From observations taken with the Wide Field Camera (WFC) at the Isaac Newton Telescope (INT), we have built an astrometric and photometric catalogue of stars in IC 1613. Candidate blue massive stars are preselected by their colors. A friends-of-friends algorithm is developed to find their clustering in the galaxy. While a common physical origin for all the members of the associations cannot be ensured, this is a necessary first step to place candidate OB stars in a population context. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea1.dat 46 198 Catalogue of OB associations in IC 1613 notes.dat 80 191 Individual notes
See also: J/A+A/363/29 : Variable stars in IC 1613 (Antonello+, 2000) J/AJ/119/2780 : C stars in IC 1613 (Albert+, 2000) J/A+A/367/759 : Variable stars in IC 1613 (Mantegazza+, 2001) J/AcA/51/221 : OGLE-II. Cepheids in IC 1613 (Udalski+, 2001) J/A+A/445/901 : BV(RI)c bands of Cepheids in IC 1613 (Antonello+, 2006) Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq OB association Sequential number 5- 13 F9.6 deg RAdeg Rigth ascension in decimal degrees (J2000) 15- 22 F8.6 deg DEdeg Declination in decimal degrees (J2000) 24- 25 I2 --- N.OB Number of OB members of the association 27- 29 I3 --- Ntot Total number of members 31- 40 A10 --- Quad Quadrant allocation in Fig. 9. 42- 44 A3 --- Notes Notes (1) 46 A1 --- n_Seq [*] n indicates a note in notes.dat file
Note (1): Notes as follows: Gal = the association is actually a galaxy d = association discarded because it does not have enough valid members (i.e. visual inspection reveals that some are blends or gas knots) ? = dubious association (associations with a small number of members, with a significant fraction under suspicion of being blends or not blue stars)
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequentiql number 5- 80 A76 --- Note Text of the note
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 04-Jan-2010
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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