Infrared spectroscopy of Mira variables. I - R Leonis: The CO and OH vibration-rotation overtone bands

Details Infrared spectroscopy of Mira variables. I - R Leonis: The CO and OH vibration-rotation overtone bands Infrared spectroscopy of Mira variables. I - R Leonis: The CO and OH vibration-rotation overtone bands

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...220..210h&link_type=abstract

Astrophysical Journal, Part 1, vol. 220, Feb. 15, 1978, p. 210-228.

Astronomy and Astrophysics

Astrophysics

98

Infrared Spectroscopy, M Stars, Mira Variables, Stellar Radiation, Stellar Spectra, Variable Stars, Abundance, Radial Velocity, Stellar Atmospheres, Stellar Envelopes

Scientific paper

Infrared spectroscopy of the pulsating Mira variable R Leonis in the region from 1.6 to 2.5 microns is analyzed. Central depths, equivalent widths, and radial velocities are determined for the strong low-excitation lines of the OH first overtones and the CO first and second overtones observed in the spectra. The examined IR spectrum of R Leo is found to be composite, containing lines from two distinct regions of the stellar atmosphere. A 'cool component' is identified with an approximately 1000-K gas layer with a velocity amplitude of about 16 km/s and a mass of no more than 0.001 solar mass; it is suggested that the cool-component lines are likely to originate in a section of the circumstellar shell close to the star. 'Warm-component' lines are shown to have an excitation temperature of approximately 3500 K and a probable origin in the stellar photosphere, which would be characterized by a velocity amplitude of about 35 km/s during the light cycle.

Affiliated with

Also associated with

No associations

Rating

Infrared spectroscopy of Mira variables. I - R Leonis: The CO and OH vibration-rotation overtone bands 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 Infrared spectroscopy of Mira variables. I - R Leonis: The CO and OH vibration-rotation overtone bands, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared spectroscopy of Mira variables. I - R Leonis: The CO and OH vibration-rotation overtone bands will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1034378