Astronomy and Astrophysics – Astronomy
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...188.5803h&link_type=abstract
American Astronomical Society, 188th AAS Meeting, #58.03; Bulletin of the American Astronomical Society, Vol. 28, p.915
Astronomy and Astrophysics
Astronomy
1
Scientific paper
The importance of M stars in the integrated light of early-type galaxies is evidenced through the TiO bands seen in the spectra of these galaxies. Recent models of the Galactic bulge, which has been shown to have an integrated spectrum similar to that of a ``typical'' elliptical galaxy, indicate that the M giants there contribute approximately 10% of the V-band flux and greater than half of the light in the K-band. Since our goal is the population synthesis of galaxies, we have constructed a grid of synthetic spectra of early-M (M0--M5) giants. These spectra span wavelengths from the optical (4000 Angstroms) to the near-infrared (2.5 mu m) and have been tested through a direct comparison to observed spectra of stars with known effective temperature, surface gravity and metal abundance. A special emphasis has been placed upon modelling the TiO bands. Colors have been derived from the synthetic spectra and pseudo-equivalent widths have been measured for the TiO bands, the near-infrared CO(2-0) and CO(3-0) bands, and a variety of atomic lines. A comparison is made to the trends seen in the strengths of these spectral features as a function of color in nearby M giants. Using recently calculated isochrones, the integrated colors and spectra of some simple stellar populations are also presented.
Bell Roger A.
Houdashelt Mark L.
No associations
LandOfFree
Synthetic Spectra of M Giants 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 Synthetic Spectra of M Giants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synthetic Spectra of M Giants will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1354588