Spectroscopy of dwarf O stars in the region 6250 to 7150 Å

Christopher Groppi, Margaret M. Hanson

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present moderate-resolution spectra of normal dwarf O stars taken over the commonly ignored spectral range from 6250 to 7150 Å. Numerous, strong, telluric absorption features, particularly the prominent O2 feature beyond 6850 Å, have made the study of stellar photospheres over this spectral region very difficult in the past. In this study, we use a method for removing the atmospheric absorption features during the reduction process. With our cleaned spectra, we have been successful in identifying the He II 6891 Å line in O dwarf stars that has until now been too heavily contaminated by telluric features to be clearly detected.

Original languageEnglish (US)
Pages (from-to)575-579
Number of pages5
JournalPublications of the Astronomical Society of the Pacific
Volume108
Issue number725
DOIs
StatePublished - Jul 1996
Externally publishedYes

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dwarf stars
O stars
spectroscopy
atmospheric attenuation
photosphere
method

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Spectroscopy of dwarf O stars in the region 6250 to 7150 Å. / Groppi, Christopher; Hanson, Margaret M.

In: Publications of the Astronomical Society of the Pacific, Vol. 108, No. 725, 07.1996, p. 575-579.

Research output: Contribution to journalArticle

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