SIMBAD references

2007ApJ...664..850M - Astrophys. J., 664, 850-861 (2007/August-1)

The M 33 variable star population revealed by Spitzer.

McQUINN K.B.W., WOODWARD C.E., WILLNER S.P., POLOMSKI E.F., GEHRZ R.D., HUMPHREYS R.M., VAN LOON J.Th., ASHBY M.L.N., EICHER K. and FAZIO G.G.

Abstract (from CDS):

We analyze five epochs of Spitzer Space Telescope Infrared Array Camera (IRAC) observations of the nearby spiral galaxy M33. Each epoch covered nearly a square degree at 3.6, 4.5, and 8.0 µm. The point-source catalog from the full data set contains 37,650 stars. The stars have luminosities characteristic of the asymptotic giant branch and can be separated into oxygen-rich and carbon-rich populations by their [3.6]-[4.5] colors. The [3.6]-[8.0] colors indicate that over 80% of the stars detected at 8.0 µm have dust shells. Photometric comparison of epochs using conservative criteria yields a catalog of 2923 variable stars. These variables are most likely long-period variables amid an evolved stellar population. At least one-third of the identified carbon stars are variable.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Individual: Messier Number: M33 - Galaxies: Stellar Content - Infrared: Stars - Stars: AGB and Post-AGB - Stars: Variables: Other

VizieR on-line data: <Available at CDS (J/ApJ/664/850): table2.dat table3.dat>

Nomenclature: Tables 2, 3: SSTM3307 JHHMMSS.ss+DDMMSS.s N=37650.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 5

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