Abstract
We present maps of over 1.5 deg2 in Chamaeleon (Cha) II at 24, 70, and 160 μm observed with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) and a 1.2 deg2 millimeter map from SIMBA on the Swedish-ESO Submillimetre Telescope (SEST). The c2d Spitzer Legacy Team's data reduction pipeline is described in detail. Over 1500 24 μm sources and 41 70 μm sources were detected by MIPS with fluxes greater than 10 σ. More than 40 potential YSOs are identified with a MIPS and 2MASS color-color diagram and by their spectral indices, including two previously unknown sources with 24 μm excesses. Our new SIMBA millimeter map of Cha II shows that only a small fraction of the gas is in compact structures with high column densities. The extended emission seen by MIPS is compared with previous CO observations. Some selected interesting sources, including two detected at 1 mm, associated with Cha II are discussed in detail, and their SEDs are presented. The classification of these sources using MIPS data is found to be consistent with that of previous studies.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 283-297 |
| Number of pages | 15 |
| Journal | Astrophysical Journal |
| Volume | 628 |
| Issue number | 1 I |
| DOIs | |
| State | Published - Jul 20 2005 |
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Keywords
- Infrared: stars
- ISM: clouds
- Stars: formation
ASJC Scopus subject areas
- Space and Planetary Science
Cite this
The spitzer c2d survey of large, nearby, interstellar clouds. I. Chamaeleon II observed with MIPS. / Young, Kaisa E.; Harvey, Paul M.; Brooke, Timothy Y.; Chapman, Nicholas; Kauffmann, Jens; Bertoldi, Frank; Lai, Shih Ping; Alcalá, Juan; Bourke, Tyler L.; Spiesman, William; Allen, Lori E.; Blake, Geoffrey A.; Evans, Neal J.; Koerner, David W; Mundy, Lee G.; Myers, Philip C.; Padgett, Deborah L.; Salinas, Anandi; Sargent, Anneila I.; Stapelfeldt, Karl R.; Teuben, Peter; Van Dishoeck, Ewine F.; Wahhaj, Zahed.
In: Astrophysical Journal, Vol. 628, No. 1 I, 20.07.2005, p. 283-297.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The spitzer c2d survey of large, nearby, interstellar clouds. I. Chamaeleon II observed with MIPS
AU - Young, Kaisa E.
AU - Harvey, Paul M.
AU - Brooke, Timothy Y.
AU - Chapman, Nicholas
AU - Kauffmann, Jens
AU - Bertoldi, Frank
AU - Lai, Shih Ping
AU - Alcalá, Juan
AU - Bourke, Tyler L.
AU - Spiesman, William
AU - Allen, Lori E.
AU - Blake, Geoffrey A.
AU - Evans, Neal J.
AU - Koerner, David W
AU - Mundy, Lee G.
AU - Myers, Philip C.
AU - Padgett, Deborah L.
AU - Salinas, Anandi
AU - Sargent, Anneila I.
AU - Stapelfeldt, Karl R.
AU - Teuben, Peter
AU - Van Dishoeck, Ewine F.
AU - Wahhaj, Zahed
PY - 2005/7/20
Y1 - 2005/7/20
N2 - We present maps of over 1.5 deg2 in Chamaeleon (Cha) II at 24, 70, and 160 μm observed with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) and a 1.2 deg2 millimeter map from SIMBA on the Swedish-ESO Submillimetre Telescope (SEST). The c2d Spitzer Legacy Team's data reduction pipeline is described in detail. Over 1500 24 μm sources and 41 70 μm sources were detected by MIPS with fluxes greater than 10 σ. More than 40 potential YSOs are identified with a MIPS and 2MASS color-color diagram and by their spectral indices, including two previously unknown sources with 24 μm excesses. Our new SIMBA millimeter map of Cha II shows that only a small fraction of the gas is in compact structures with high column densities. The extended emission seen by MIPS is compared with previous CO observations. Some selected interesting sources, including two detected at 1 mm, associated with Cha II are discussed in detail, and their SEDs are presented. The classification of these sources using MIPS data is found to be consistent with that of previous studies.
AB - We present maps of over 1.5 deg2 in Chamaeleon (Cha) II at 24, 70, and 160 μm observed with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) and a 1.2 deg2 millimeter map from SIMBA on the Swedish-ESO Submillimetre Telescope (SEST). The c2d Spitzer Legacy Team's data reduction pipeline is described in detail. Over 1500 24 μm sources and 41 70 μm sources were detected by MIPS with fluxes greater than 10 σ. More than 40 potential YSOs are identified with a MIPS and 2MASS color-color diagram and by their spectral indices, including two previously unknown sources with 24 μm excesses. Our new SIMBA millimeter map of Cha II shows that only a small fraction of the gas is in compact structures with high column densities. The extended emission seen by MIPS is compared with previous CO observations. Some selected interesting sources, including two detected at 1 mm, associated with Cha II are discussed in detail, and their SEDs are presented. The classification of these sources using MIPS data is found to be consistent with that of previous studies.
KW - Infrared: stars
KW - ISM: clouds
KW - Stars: formation
UR - http://www.scopus.com/inward/record.url?scp=24644501757&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=24644501757&partnerID=8YFLogxK
U2 - 10.1086/430597
DO - 10.1086/430597
M3 - Article
VL - 628
SP - 283
EP - 297
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1 I
ER -