J/ApJ/655/212 S3MC IRAC and MIPS photometry (Bolatto+, 2007)
The Spitzer Survey of the Small Magellanic Cloud: S3MC imaging and photometry
in the mid- and far-infrared wave bands.
Bolatto A.D., Simon J.D., Stanimirovic S., van Loon J.T., Shah R.Y.,
Venn K., Leroy A.K., Sandstrom K., Jackson J.M., Israel F.P., Li A.,
Staveley-Smith L., Bot C., Boulanger F., Rubio M.
<Astrophys. J., 655, 212-232 (2007)>
=2007ApJ...655..212B 2007ApJ...655..212B
ADC_Keywords: Magellanic Clouds ; YSOs ; Photometry, infrared
Keywords: dust, extinction - galaxies: dwarf - galaxies: stellar content -
infrared: ISM - infrared: stars - Magellanic Clouds
Abstract:
We present the initial results from the Spitzer Survey of the Small
Magellanic Cloud (S3MC), which imaged the star-forming body of the
SMC in all seven MIPS and IRAC wave bands. We find that the F8/F24
ratio (an estimate of PAH abundance) has large spatial variations and
takes a wide range of values that are unrelated to metallicity but
anticorrelated with 24um brightness and F24/F70 ratio. This suggests
that photodestruction is primarily responsible for the low abundance
of PAHs observed in star-forming low-metallicity galaxies. We use the
S3MC images to compile a photometric catalog of 400000 mid- and
far-infrared point sources in the SMC.
Description:
We obtained Spitzer images of the SMC in all of the bands of the
Infrared Array Camera (IRAC) and the Multiband Imaging Photometer and
Spectrometer (MIPS) as part of the Cycle I General Observer project
3316, "The Small Magellanic Cloud: A Template for the Primitive
Interstellar Medium."
The MIPS data were acquired in 2004 November, using five large AORs
each lasting over 3hr and two smaller AORs slightly over 1hr long
each.
The IRAC data were obtained during 2005 May using eight large 4hr
long and two small 2hr long AORs with a frame time of 12s and a
three-point cycling dithering pattern.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 154 282 S3MC Young Stellar Object Catalog
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See also:
J/AJ/123/855 : Magellanic Clouds Photometric Survey: the SMC (Zaritsky+, 2002)
J/A+A/401/873 : The SMC in the Far Infrared (Wilke+, 2003)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [BSS2007] Running source identification number
5- 9 A5 --- --- [S3MC_]
10- 29 A20 --- S3MC Source name (JHHMMSS.ss+DDMMSS.ss)
31- 37 F7.4 deg RAdeg Right Ascension in decimal degrees (J2000)
39- 46 F8.4 deg DEdeg Declination in decimal degrees (J2000)
48- 53 F6.1 uJy FB ? The B band flux density
55- 60 F6.1 uJy FV ? The V band flux density
62- 67 F6.1 uJy FI ? The I band flux density
69- 74 F6.1 uJy FJ ? The J band flux density
76- 82 F7.1 uJy FH ? The H band flux density
84- 90 F7.1 uJy FK ? The K band flux density
92- 96 I5 uJy F3.6 ? Spitzer/IRAC 3.6 µm flux density
98-100 I3 uJy e_F3.6 ? Error in 3.6
102-106 I5 uJy F4.5 ? Spitzer/IRAC 4.5 µm flux density
108 I1 uJy e_F4.5 ? Error in 4.5
110-114 I5 uJy F5.8 Spitzer/IRAC 5.8 µm flux density
116-118 I3 uJy e_F5.8 Error in 5.8
120-124 I5 uJy F8.0 Spitzer/IRAC 8.0 µm flux density
126-128 I3 uJy e_F8.0 Error in 8.0
130-136 I7 uJy F24 ? Spitzer/MIPS 24 µm flux density
138-140 I3 uJy e_F24 ? Error in 24
142-148 I7 uJy F70 ? Spitzer/MIPS 70 µm flux density
150-154 I5 uJy e_F70 ? Error in 70
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 08-Dec-2008