Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:1410.4504)
· On-line Data
· References in the article
· Citations to the Article (5) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (15)
· NED Objects (1)
· Associated Articles
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
A Spitzer Space Telescope survey of extreme asymptotic giant branch stars in M32
Authors:
Jones, O. C.; McDonald, I.; Rich, R. M.; Kemper, F.; Boyer, M. L.; Zijlstra, A. A.; Bendo, G. J.
Affiliation:
AA(Jodrell Bank Centre for Astrophysics, Alan Turing Building, Oxford Road, Manchester, M13 9PL, UK; Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA ), AB(Jodrell Bank Centre for Astrophysics, Alan Turing Building, Oxford Road, Manchester, M13 9PL, UK), AC(Department of Physics & Astronomy, University of California Los Angeles, Los Angeles, CA 90095, USA), AD(Jodrell Bank Centre for Astrophysics, Alan Turing Building, Oxford Road, Manchester, M13 9PL, UK), AE(Observational Cosmology Lab, Code 665, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA; Oak Ridge Associated Universities (ORAU), Oak Ridge, TN 37831, USA), AF(Jodrell Bank Centre for Astrophysics, Alan Turing Building, Oxford Road, Manchester, M13 9PL, UK), AG(Jodrell Bank Centre for Astrophysics, Alan Turing Building, Oxford Road, Manchester, M13 9PL, UK; Jodrell Bank Centre for Astrophysics, Alan Turing Building, Oxford Road, Manchester, M13 9PL, UK)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 446, Issue 2, p.1584-1596 (MNRAS Homepage)
Publication Date:
01/2015
Origin:
OUP
Astronomy Keywords:
stars: AGB and post-AGB, stars: late-type, stars: mass-loss, galaxies: individual: M32, galaxies: stellar content, infrared: stars
Abstract Copyright:
2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
DOI:
10.1093/mnras/stu2169
Bibliographic Code:
2015MNRAS.446.1584J

Abstract

We investigate the population of cool, evolved stars in the Local Group dwarf elliptical galaxy M32, using Infrared Array Camera observations from the Spitzer Space Telescope. We construct deep mid-infrared colour-magnitude diagrams for the resolved stellar populations within 3.5 arcmin of M32's centre, and identify those stars that exhibit infrared excess. Our data are dominated by a population of luminous, dust-producing stars on the asymptotic giant branch (AGB) and extend to approximately 3 mag below the AGB tip. We detect for the first time a sizeable population of `extreme' AGB stars, highly enshrouded by circumstellar dust and likely completely obscured at optical wavelengths. The total dust-injection rate from the extreme AGB candidates is measured to be 7.5 × 10-7 M&sun; yr-1, corresponding to a gas mass-loss rate of 1.5 × 10-4 M&sun; yr-1. These extreme stars may be indicative of an extended star formation epoch between 0.2 and 5 Gyr ago.

Associated Articles

Source Paper     Catalog Description    


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

  New!

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints