SIMBAD references

2015MNRAS.446.1584J - Mon. Not. R. Astron. Soc., 446, 1584-1596 (2015/January-2)

A Spitzer Space Telescope survey of extreme asymptotic giant branch stars in M32.

JONES O.C., McDONALD I., RICH R.M., KEMPER F., BOYER M.L., ZIJLSTRA A.A. and BENDO G.J.

Abstract (from CDS):

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 7.5x10–7 M/yr, corresponding to a gas mass-loss rate of 1.5x10–4 M/yr. These extreme stars may be indicative of an extended star formation epoch between 0.2 and 5 Gyr ago.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): stars: AGB and post-AGB - stars: late-type - stars: mass-loss - galaxies: individual: M32 - galaxies: stellar content - infrared: stars

VizieR on-line data: <Available at CDS (J/MNRAS/446/1584): table1.dat>

Nomenclature: Table 1: SSTM32 JHHMMSS.ss+DDMMSS.s N=1552.

Simbad objects: 15

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2019.09.19-17:42:52

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