Horizontal branch morphology in galactic globular clusters: dense environment is "a" second parameter

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

14 pages, AASTEX latex, plus 3 .eps figures automatically enclosed, needs the latex-macros aj_pt4.sty and epsf.sty -- To appea

Scientific paper

10.1086/118289

The Horizontal Branch (HB) morphology in the color -- magnitude diagram of the Galactic globular clusters depends on many factors, and it is now firmly established that the so-called Second Parameter is not just the cluster age as claimed for several years. As a part of a wider program devoted to the search for the physical processes driving the Horizontal Branch Morphology, we re-address here the problem of the extension of blue HB tails by introducing a new quantitative observable, B2/B+R+V where B2={Number of HB stars with (B-V)_0<-0.02}. We demonstrate that the environmental conditions within a cluster clearly affect its HB morphology, in the sense that, in general, the higher the cluster central density the higher is the relative number of stars populating the most blue region of its HB.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Horizontal branch morphology in galactic globular clusters: dense environment is "a" second parameter 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 morphology in galactic globular clusters: dense environment is "a" second parameter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Horizontal branch morphology in galactic globular clusters: dense environment is "a" second parameter will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-290854

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.