Article (Scientific journals)
The missing UV opacity and the colours of solar-type stars
Magain, Pierre
1983In Astronomy and Astrophysics, 122, p. 225-230
Peer Reviewed verified by ORBi
 

Files


Full Text
Magain_1983_AA122_225.pdf
Publisher postprint (119.73 kB)
Download

The authors thank SAO/NASA ADS Astronomy Abstract Service for their deposit authorization. The original publication is available at www.springerlink.com.


All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
MAIN SEQUENCE STARS; STELLAR ATMOSPHERES; STELLAR COLOR; STELLAR SPECTROPHOTOMETRY; DWARF STARS; METALLICITY; SOLAR FLUX
Abstract :
[en] A simple method is proposed to take into account the "missing UV opacity" in solar-type stars. It is shown that the mere inclusion of that UV opacity through a very simple formula is sufficient to bring the theoretical colours in agreement with observed ones for stars of different metal abundances and belonging to the spectral range from mid-F to late-G. Synthetic colours computed in the Geneva and UBV systems reproduce the various observed relations satisfactorily. The relations based on these colours allow reliable estimates of effective temperatures, surface gravities and metal abundances of stars. In addition, solar colours are obtained and three more solar twin candidates are proposed.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Magain, Pierre  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image
Language :
English
Title :
The missing UV opacity and the colours of solar-type stars
Publication date :
1983
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
122
Pages :
225-230
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 February 2010

Statistics


Number of views
43 (1 by ULiège)
Number of downloads
24 (0 by ULiège)

Bibliography


Similar publications



Contact ORBi