Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios

Details Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010mnras.408.1568k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 408, Issue 3, pp. 1568-1575.

Astronomy and Astrophysics

Astronomy

1

Stars: Fundamental Parameters, Supergiants, Stars: Variables: Cepheids

Scientific paper

Luminous FG supergiants can be used as extragalactic distance indicators. In order to fully exploit the properties of these bright stars, we must first learn how to measure their luminosities. Based primarily on classical Cepheids and supergiants in clusters and OB associations, we have derived 80 empirical relations connecting the line depth ratios of FeII/FeI lines with the absolute magnitudes Mv and the effective temperatures Teff. These relations have been applied to estimate the absolute magnitudes of 98 FG supergiants with an error of +/-0.26mag. The application range of our calibrations is spectral types F2-G8 and luminosity classes I and II (absolute magnitudes Mv, -0.5 to -8 mag). A comparison of our Mv determinations with values from the literature shows good agreement.

Affiliated with

Also associated with

No associations

Rating

Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios 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 Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accurate luminosities for F-G supergiants from FeII/FeI line depth ratios will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1489395