Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apjs...48..145w&link_type=abstract
Astrophysical Journal Supplement Series, vol. 48, Jan. 1982, p. 145-160.
Astronomy and Astrophysics
Astrophysics
49
Absorption Spectra, Abundance, Calcium, Interstellar Matter, Molecular Clouds, Nebulae, Sodium, Stellar Spectra, Cosmic X Rays, Kinetic Energy, O Stars, Radial Velocity, Spectral Line Width, Spectrograms, Stellar Luminosity, Stellar Winds, Wolf-Rayet Stars
Scientific paper
Optical interstellar absorption line profiles in the spectra of 22 stars within the Carina Nebula, observed using the 4-m echelle spectrograph at resolving powers of 3-6 x 10 to the 4th, are presented. Radial velocities, representative column densities, and equivalent widths are given for resolved velocity components. As many as 12 distinct components spanning several hundred km/s are observed in a single line of sight. Large Ca II/Na I ratios are found for components having velocities greater than 40 km/s. It is noted that one extreme case may correspond to a high-ionization feature associated with a WN-A star. At least two kinds of motions are suggested by the interstellar lines: a systematic expansion of the entire nebula at 15-20 km/s; and smaller scale 'bubbles' or 'bullets' with much higher velocities.
No associations
LandOfFree
An atlas of interstellar CA II and NA I profiles in the Carina Nebula 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 An atlas of interstellar CA II and NA I profiles in the Carina Nebula, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An atlas of interstellar CA II and NA I profiles in the Carina Nebula will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1455890