Horizontal-Branch Stars: Their nature and their absolute magnitude

Details Horizontal-Branch Stars: Their nature and their absolute magnitude Horizontal-Branch Stars: Their nature and their absolute magnitude

1998-11-04

arxiv.org/abs/astro-ph/9811077v1

Astronomy and Astrophysics

Astrophysics

12 pages, Latex, 1 Fig., Inv. Conf. Contrib. 13-16 Sept.1998, Haguenau, France: Harmonizing the Cosmic Distance Scale in the P

Scientific paper

Horizontal-branch stars play an important role in defining the absolute distance scale in the universe. For that one has to know Mv at relevant B-V with well defined [M/H] for each type of horizontal-branch star. The nature of the horizontal-branch stars is reviewed with emphasis on all the open questions regarding evolution and structure, questions which show that these stars are not the easiest objects in the distance scale discussions. Using the HB stars with the best Hipparcos parallaxes, the HB at (B-V)o = 0.20 and [Fe/H] = -1.5 has Mv = +0.71. Assuming the [Fe/H] to Mv relation for RR Lyrae stars to be valid for HB stars too, one finds Mv 1.00 for [Fe/H] = 0.

Affiliated with

Also associated with

No associations

Rating

Horizontal-Branch Stars: Their nature and their absolute magnitude 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 Horizontal-Branch Stars: Their nature and their absolute magnitude, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Horizontal-Branch Stars: Their nature and their absolute magnitude will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-610546