Spectrophotometry of extreme helium stars - Ultraviolet fluxes and effective temperatures

Details Spectrophotometry of extreme helium stars - Ultraviolet fluxes and effective temperatures Spectrophotometry of extreme helium stars - Ultraviolet fluxes and effective temperatures

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278..224d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 278, March 1, 1984, p. 224-232.

Astronomy and Astrophysics

Astrophysics

45

Astronomical Spectroscopy, B Stars, Stellar Spectrophotometry, Stellar Temperature, Ultraviolet Spectra, Atmospheric Models, Iue, Stellar Atmospheres, Stellar Color, Stellar Spectra

Scientific paper

Ultraviolet flux distributions are presented for the extremely helium rich stars BD +10 deg 2179, HD 124448, LSS 3378, BD -9 deg 4395, LSE 78, HD 160641, LSIV -1 deg 2, BD 1 deg 3438, HD 168476, MV Sgr, LS IV-14 deg 109 (CD -35 deg 11760), LSII +33 deg 5 and BD +1 deg 4381 (LSIV +2 deg 13) obtained with the International Ultraviolet Explorer (IUE). Broadband photometry and a newly computed grid of line blanketed model atmospheres were used to determine accurate angular diameters and total stellar fluxes. The resultant effective temperatures are in most cases in satisfactory agreement with those based on broadband photometry and/or high resolution spectroscopy in the visible. For two objects, LSII +33 deg 5 and LSE 78, disagreement was found between the IUE observations and broadband photometry: the colors predict temperatures around 20,000 K, whereas the UV spectra indicate much lower photospheric temperatures of 14,000 to 15,000 K. The new temperature scale for extreme helium stars extends to lower effective temperatures than that of Heber and Schoenberner (1981) and covers the range from 8,500 K to 32,000 K. Previously announced in STAR as N83-24433

Affiliated with

Also associated with

No associations

Rating

Spectrophotometry of extreme helium stars - Ultraviolet fluxes and effective temperatures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectrophotometry of extreme helium stars - Ultraviolet fluxes and effective temperatures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectrophotometry of extreme helium stars - Ultraviolet fluxes and effective temperatures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1037203