Spectroscopic studies of Wolf-Rayet stars. VI - Optical spectrophotometry of near-infrared emission lines in some Galactic stars

Details Spectroscopic studies of Wolf-Rayet stars. VI - Optical spectrophotometry of near-infrared emission lines in some Galactic stars Spectroscopic studies of Wolf-Rayet stars. VI - Optical spectrophotometry of near-infrared emission lines in some Galactic stars

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...354..359c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 354, May 1, 1990, p. 359-371.

Astronomy and Astrophysics

Astrophysics

46

Emission Spectra, Near Infrared Radiation, Stellar Spectrophotometry, Wolf-Rayet Stars, Astronomical Catalogs, Spectral Line Width, Stellar Spectra, Visible Spectrum

Scientific paper

Spectroscopy of 47 WN stars and 36 WC stars in the Galaxy in the near-infrared is presented. In the WN types, the strongest lines are due to He II transitions and N IV at the 7115 A. In WC types, the strongest lines are due to C III, particularly at 9711 A; C II transitions, the strongest at 7236 A, and C IV lines, particularly at 7726 A, are also found. It is a relatively easy procedure to determine the W-R class from this wavelength region; similarly, the distinction between WNE ('early') and WNL ('late'), and between WCE ('early') and WCL ('late') may also be made, although numerical W-R subtypes cannot easily be determined from this near-infrared region. A comparison of line ratios of the various ions found in W-R stars suggests that it is only the optical N IV 4057 A and C III 5696 A transitions which do not behave in a 'well-understood' manner; curiously enough, it is just these lines that play an important role in the traditional numerical subtype definitions.

Affiliated with

Also associated with

No associations

Rating

Spectroscopic studies of Wolf-Rayet stars. VI - Optical spectrophotometry of near-infrared emission lines in some Galactic stars 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 Spectroscopic studies of Wolf-Rayet stars. VI - Optical spectrophotometry of near-infrared emission lines in some Galactic stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopic studies of Wolf-Rayet stars. VI - Optical spectrophotometry of near-infrared emission lines in some Galactic stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-779552