Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The "Tip" of the Red Giant Branch as a distance indicator: results from
  evolutionary models   New theoretical evaluations of the Red Giant Branch Tip (TRGB) luminosity, by
adopting the most updated physical inputs in computing canonical stellar
models, are presented. Theoretical relations for the run of the TRGB bolometric
and I magnitude with the metallicity are provided together with a comparison of
the distance scale based on these relations and the RR Lyrae distance scale
presented in Cassisi & Salaris (1996) and the Cepheid distance scale adopted by
Lee, Freedman & Madore (1993). The result of this comparison - performed by
adopting a sample of galactic globular clusters and a sample of resolved
galaxies - discloses a satisfactory agreement between theory and observations
at the level of 0.1 mag. This occurrence can be regarded as an evidence for the
consistency between theoretical Red Giant, Horizontal Branch stellar models and
independent Cepheid observations, and allows to safely use the provided TRGB
luminosity relations as an alternative primary distance indicator for galaxies
in which the stellar component has been resolved.

29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom