J/ApJ/705/1364 MIR catalog of point sources in M33 (Thompson+, 2009)
A new class of luminous transients and a first census of their massive stellar
progenitors.
Thompson T.A., Prieto J.L., Stanek K.Z., Kistler M.D., Beacom J.F.,
Kochanek C.S.
<Astrophys. J., 705, 1364-1384 (2009)>
=2009ApJ...705.1364T 2009ApJ...705.1364T
ADC_Keywords: Galaxies, photometry ; Photometry, infrared ; Stars, dwarfs
Keywords: stars: evolution - supernovae: general - supernovae: individual
(SN 2008S, 1999bw) - surveys
Abstract:
The progenitors of SN 2008S and the 2008 luminous transient in NGC 300
were deeply dust-enshrouded massive stars, with extremely red
mid-infrared (MIR) colors and relatively low bolometric luminosities
(∼5x104L☉). Because of the implied frequency of events similar
to SN 2008S and NGC 300 and the interesting character of their
progenitors, we searched for analogous sources in archival Spitzer
imaging of nearby galaxies. Our goal was to identify the underlying
subpopulation of massive stars from which these progenitors emerge, to
characterize their properties and frequency, and to catalog them for
future study. The Triangulum galaxy M33 is a perfect test case. It has
an absolute B-band magnitude of MB~-19.2, a distance of ∼0.96Mpc,
and it has extensive optical, Hα, MIR and FIR imaging.
Description:
We co-added six epochs of MIR imaging of M33 obtained between 2004
January 9 and 2006 February 4 with Spitzer/IRAC (3.6-8.0um; see
McQuinn et al. 2007, Cat. J/ApJ/664/850, for details of the observing
program).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 39 53194 MIR catalog for 53194 point sources in M33
--------------------------------------------------------------------------------
See also:
J/A+A/534/A96 : Spitzer photometry of YSC in M33 (Sharma+, 2011)
J/ApJS/187/495 : SNRs in M33 from optical and X-ray (Long+, 2010)
J/ApJS/174/366 : Chandra ACIS survey of M33 (ChaSeM33) (Plucinsky+, 2008)
J/ApJ/687/1201 : SN and LGRB locations in their host galaxies (Kelly+, 2008)
J/ApJ/664/850 : Spitzer observations of stars in M33 (McQuinn+, 2007)
J/A+A/476/1161 : Spitzer photometry of M33 (Verley+, 2007)
J/ApJS/120/247 : Supernova remnants in M33 (Gordon+, 1999)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.5 deg RAdeg Right Ascension in decimal degrees (J2000)
10- 17 F8.5 deg DEdeg Declination in decimal degrees (J2000)
19- 23 F5.2 mag 3.6mag Spitzer/IRAC 3.6 micron band magnitude
25- 28 F4.2 mag e_3.6mag The 1σ uncertainty in 3.6mag
30- 34 F5.2 mag 4.5mag Spitzer/IRAC 4.5 micron band magnitude
36- 39 F4.2 mag e_4.5mag The 1σ uncertainty in 4.5mag
--------------------------------------------------------------------------------
Nomenclature notes:
Table 1: Objects are <[TPS2009] DD.ddddd+DD.ddddd> in the Dictionary of
Nomenclature.
History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-Dec-2011