2010A&A...513A...4G


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST21:47:34

2010A&A...513A...4G - Astronomy and Astrophysics, volume 513, A4-4 (2010/4-1)

Infrared photometry and evolution of mass-losing AGB stars. III. Mass loss rates of MS and S stars.

GUANDALINI R.

Abstract (from CDS):

The asymptotic giant branch (AGB) phase marks the end of the evolution for low- and intermediate-mass stars, which are fundamental contributors to the mass return to the interstellar medium and to the chemical evolution of galaxies. The detailed understanding of mass loss processes is hampered by the poor knowledge of the luminosities and distances of AGB stars. In a series of papers we are trying to establish criteria permitting a more quantitative determination of luminosities for the various types of AGB stars, using the infrared (IR) fluxes as a basis. An updated compilation of the mass loss rates is also required, as it is crucial in our studies of the evolutionary properties of these stars. In this paper we concentrate our analysis on the study of the mass loss rates for a sample of galactic S stars. We reanalyze the properties of the stellar winds for a sample of galactic MS, S, SC stars with reliable estimates of the distance on the basis of criteria previously determined. We then compare the resulting mass loss rates with those previously obtained for a sample of C-rich AGB stars. Stellar winds in S stars are on average less efficient than those of C-rich AGB stars of the same luminosity. Near-to-mid infrared colors appear to be crucial in our analysis. They show a good correlation with mass loss rates in particular for the Mira stars. We suggest that the relations between the rates of the stellar winds and both the near-to-mid infrared colors and the periods of variability improve the understanding of the late evolutionary stages of low mass stars and could be the origin of the relation between the rates of the stellar winds and the bolometric magnitudes.

Abstract Copyright:

Journal keyword(s): stars: AGB and post-AGB - stars: mass-loss - stars: evolution - infrared: stars

Simbad objects: 24

goto Full paper

goto View the reference in ADS

Number of rows : 24

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* VX And C* 00 19 54.0156326103 +44 42 33.898137380   12.23 7.80     C-J4.5 147 0
2 V* T Cet S* 00 21 46.2731778 -20 03 28.884826   7.32 5.74     M5-6Se 139 0
3 V* R And S* 00 24 01.9473999328 +38 34 37.326131071 10.61 9.36 7.39 4.45 2.30 S5-7/4-5e 338 0
4 V* S Cas S* 01 19 41.9752833334 +72 36 40.857560507           S3-54-8 113 1
5 V* W And S* 02 17 32.9610669 +44 18 17.769045   9.62       S7-8/1e-M7Se 204 1
6 V* T Cam S* 04 40 08.8659750793 +66 08 48.691758479 10.72 9.65 7.30     S5-6/5e 110 0
7 V* R Lyn Mi* 07 01 18.0096855380 +55 19 49.727946188   9.58 7.56     S4-6.5/5-6e 117 0
8 V* R Gem S* 07 07 21.2699664341 +22 42 12.750071105 11.74 9.89 7.68 3.75 0.39 S3.5-6.5/6e 186 0
9 V* AA Cam S* 07 14 52.0705916927 +68 48 15.366595788   9.23 7.79     M5S 61 0
10 V* Y Lyn S* 07 28 11.6139802943 +45 59 26.215265764 9.88 8.71 6.98 4.25 1.96 M6S 133 0
11 V* RS Cnc S* 09 10 38.7978379 +30 57 47.295961 8.65 7.62 5.95 3.06 0.73 M6S 295 0
12 V* UY Cen S* 13 16 31.8300061387 -44 42 15.757551544 14.09 10.03 7.13     S6/8 76 0
13 V* TT Cen S* 13 19 35.0158270198 -60 46 46.290333346     11.50     SC5:/8+ 48 0
14 V* GI Lup S* 15 06 16.3155590069 -41 28 13.855126053     10.40     S7,8e 30 0
15 V* ST Her S* 15 50 46.6248794228 +48 28 58.809091874   9.09 7.75     M6S-M7SIII: 154 0
16 V* RT Sco S* 17 03 32.5563917962 -36 55 13.675752470     7.00     S7,2 64 0
17 V* VX Aql S* 19 00 09.6086657298 -01 34 56.713255865   15.23 12.20     SC5/8e 65 0
18 V* ST Sgr S* 19 01 29.1971991570 -12 45 34.111292361   12.13 7.20     S6-7.5/2.5e 67 0
19 V* S Lyr S* 19 13 11.8053496248 +26 00 27.847739165           SC 69 0
20 V* W Aql S* 19 15 23.3581458294 -07 02 50.308513461   12.72 10.14     S6/6e 206 0
21 V* R Cyg S* 19 36 49.3563270715 +50 11 59.719752717   9.96 6.10   6.447 S4-8/6e 264 1
22 * chi Cyg S* 19 50 33.9243904 +32 54 50.609683 7.02 6.06 4.24 1.81 -0.01 S6-9/1-2e 663 0
23 * pi.01 Gru S* 22 22 44.2112214756 -45 56 52.780402708 10.52 8.62 6.55 3.19 0.52 S5,7: 159 0
24 V* WY Cas S* 23 58 01.3075303591 +56 29 13.468672815   12.48 10.76     S6-6.5/6-e 68 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2010A&A...513A...4G and select 'bookmark this link' or equivalent in the popup menu


2020.07.14-21:47:34

© Université de Strasbourg/CNRS

    • Contact