Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....87..139b&link_type=abstract
Astronomy and Astrophysics, vol. 87, no. 1-2, July 1980, p. 139-141.
Astronomy and Astrophysics
Astronomy
20
Carbon Stars, Infrared Astronomy, Stellar Spectrophotometry, Variable Stars, Interstellar Extinction, Irregular Variable Stars, Oxygen, Semiregular Variable Stars, Stellar Envelopes, Stellar Spectra, Stellar Temperature
Scientific paper
IJHKL photometry is provided for 34 carbon stars, all known as variable stars. The low amplitude of variations at infrared wavelengths is confirmed for semiregular and irregular variables. In addition, an H-K versus J-H diagram shows that carbon stars populate a strip (roughly J-H greater than 1.0) with much steeper inclination than the J-H equals 0 to 1.0 sequence of oxygen stars used as standard stars in the Arizona photometry (Johnson, 1965) system. Increasing circumstellar reddening by thicker and cooler dust emission is the main explanation of the strip orientation. It is noted that the H-K versus J-H diagram for cool carbon stars is satisfactorily explained by the circumstellar shell model developed by Bergeat et al. (1976).
Bergeat J.
Lunel M.
No associations
LandOfFree
IJHKL photometry of carbon 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 IJHKL photometry of carbon stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IJHKL photometry of carbon stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-802903