J/A+A/503/107 Spitzer/IRAC view of Sh2-284 (Puga+, 2009)
Spitzer/IRAC view of Sh2-284. Searching for evidence of triggered star
formation in an isolated region in the outer Milky Way.
Puga E., Hony S., Neiner C., Lenorzer A., Hubert A.-M., Waters L.B.F.M.,
Cusano F., Ripepi V.
<Astron. Astrophys., 503, 107-119 (2009)>
=2009A&A...503..107P 2009A&A...503..107P
ADC_Keywords: H II regions ; Infrared sources ; Photometry, infrared
Keywords: stars: formation - stars: pre-main sequence - ISM: bubbles -
ISM: HII regions - ISM: evolution -
Galaxy: open clusters and associations: individual: Dolidze 25
Abstract:
Using Spitzer/IRAC observations of a region to be observed by the
CoRoT satellite, we have unraveled a new complex star-forming region
at low metallicity in the outer Galaxy. We perform a study of S284 in
order to outline the chain of events in this star-forming region.
Description:
We used four-band Spitzer/IRAC photometry as well as Hα
imaging obtained with INT/WFC, during Cycle 4 (2005 March 28) under
Programme ID 3340. Combining these data with the optical photometry
obtained in the frame of CoRoTs preparation and the 2MASS catalog we
analysed the properties and distribution of young stellar objects
(YSOs) associated with point-like sources. We also studied the SEDs of
regions of extended emission, complementing our dataset with IRAS and
MSX data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 70 155 List of candidate Class I objects in our IRAC
field around S284
table4.dat 70 183 List of candidate Class II objects in our IRAC
field around S284
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See also:
B/corot : CoRoT observation log Release 4 (CoRoT, 2009)
V/114 : MSX6C Infrared Point Source Catalog (Egan+ 2003)
Byte-by-byte Description of file: table[34].dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number
4 A1 --- n_Seq [ab] flag added by CDS for the two objects
labeled 141 in original table
5- 6 I2 h RAh Right ascension (J2000)
8- 9 I2 min RAm Right ascension (J2000)
11- 14 F4.1 s RAs Right ascension (J2000)
16 A1 --- DE- Declination sign (J2000)
17- 18 I2 deg DEd Declination (J2000)
20- 21 I2 arcmin DEm Declination (J2000)
23- 27 F5.2 arcsec DEs Declination (J2000)
28- 32 F5.2 mag [3.6] IRAC 3.6um magnitude
34- 37 F4.2 mag e_[3.6] rms uncertainty on [3.6]
39- 43 F5.2 mag [4.5] IRAC 4.5um magnitude
45- 48 F4.2 mag e_[4.5] rms uncertainty on [4.5]
50- 54 F5.2 mag [5.8] IRAC 5.8um magnitude
56- 59 F4.2 mag e_[5.8] rms uncertainty on [5.8]
61- 65 F5.2 mag [8.0] IRAC 8.0um magnitude
67- 70 F4.2 mag e_[8.0] rms uncertainty on [8.0]
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 15-Oct-2009