The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. I. Chamaeleon II Observed with MIPS

Abstract

We present maps of over 1.5 square degrees in Chamaeleon (Cha) II at 24, 70, and 160 micron observed with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) and a 1.2 square degree 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 micron sources and 41 70 micron sources were detected by MIPS with fluxes greater than 10-sigma. 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 micron 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 presented. The classification of these sources using MIPS data is found to be consistent with previous studies.

arXiv comment44 pages, 12 figures (1 color), to be published in ApJ

References in corpus (11)

• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• SWIRE: The SIRTF Wide-area InfraRed Extragalactic Survey
• From Molecular Cores to Planet-forming Disks: A SIRTF Legacy Program
• 2-D Radiative Transfer in Protostellar Envelopes: II. An Evolutionary Sequence
• A Search for Infall Motions Toward Nearby Young Stellar Objects
• Reduction Algorithms for the Multiband Imaging Photometer for Spitzer
• Evolutionary Signatures in the Formation of Low-Mass Protostars
• Extragalactic Source Counts at 24 Microns in the Spitzer First Look Survey
• A new Classical T Tauri object at the sub-stellar boundary in Chamaeleon II
• Low mass T Tauri and young brown dwarf candidates in the Chamaeleon II dark cloud found by DENIS
• Centimetre continuum emission from young stellar objects in Cederblad 110

Cited by in corpus (46)

• The Spitzer c2d Legacy Results: Star Formation Rates and Efficiencies; Evolution and Lifetimes
• Young Stellar Objects in the Gould Belt
• Identifying the Low Luminosity Population of Embedded Protostars in the c2d Observations of Clouds and Cores
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. III. Perseus Observed with IRAC
• The Spitzer c2d Survey of Weak-line T Tauri Stars II: New Constraints on the Timescale for Planet Building
• The Disk Population of the Chamaeleon I Star-Forming Region
• Properties of Hi-GAL clumps in the inner Galaxy]{The Hi-GAL compact source catalogue. I. The physical properties of the clumps in the inner Galaxy ($-71.0^{\circ }<\ell <67.0^{\circ }$)
• The Spitzer c2d Survey of Nearby Dense Cores: II: Discovery of a Low Luminosity Object in the "Evolved Starless Core" L1521F
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. XI. Lupus Observed With IRAC and MIPS
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds: VI. Perseus Observed with MIPS
• GASPS - a Herschel survey of gas and dust in Protoplanetary Disks: Summary and Initial Statistics
• Spitzer/MIPS Observations of Stars in the Beta Pictoris Moving Group
• The Spitzer c2d Survey of Nearby Dense Cores: I: First Direct Detection of the Embedded Source in IRAM 04191+1522
• Young, Low-Mass Brown Dwarfs with Mid-Infrared Excesses
• The Mass Distributions of Starless and Protostellar Cores in Gould Belt Clouds
• The Luminosities of Protostars in the Spitzer c2d and Gould Belt Legacy Clouds
• The Spitzer c2d Survey of Weak-Line T Tauri Stars. III. The Transition from Primordial Disks to Debris Disks
• The young population of the Chamaeleon II dark cloud
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds.X. The Chamaeleon II Pre-Main Sequence Population as Observed With IRAC and MIPS
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds: VII. Ophiuchus Observed with MIPS
• Evidence for J and H-band excess in classical T Tauri stars and the implications for disk structure and estimated ages
• Grain growth signatures in the protoplanetary discs of Chamaeleon and Lupus
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds VIII. Serpens Observed with MIPS
• POISSON project - I - Emission lines as accretion tracers in young stellar objects: results from observations of Chamaeleon I and II sources
• The Chamaeleon II low-mass star-forming region: radial velocities, elemental abundances, and accretion properties
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. XII. The Perseus YSO Population as Observed with IRAC and MIPS
• Dust, Ice and Gas in Time (DIGIT) Herschel program first results: A full PACS-SED scan of the gas line emission in protostar DK Cha
• First Fruits of the Spitzer Space Telescope: Galactic and Solar System Studies
• A Chandra Study of the Rosette Star-Forming Complex. II. Clusters in the Rosette Molecular Cloud
• The Spitzer c2d survey of Large, Nearby, Interstellar Clouds. V. Chamaeleon II Observed with IRAC
• The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. IV. Lupus Observed with MIPS
• Abundant crystalline silicates in the disk of a very low mass star
• Populations of Young Stellar Objects in Nearby Molecular Clouds
• CO in Protostars (COPS): $Herschel$-SPIRE Spectroscopy of Embedded Protostars
• The very low-mass population of the Corona Australis and Chamaeleon II star forming regions
• Herschel observations of the Herbig-Haro objects HH52-54
• The Spitzer Survey of Interstellar Clouds in the Gould Belt. VI. The Auriga-California Molecular Cloud observed with IRAC and MIPS
• The JCMT Gould Belt Survey: Evidence for radiative heating in Serpens MWC 297 and its influence on local star formation
• The Spitzer Survey of Interstellar Clouds in the Gould Belt. IV. Lupus V and VI Observed with IRAC and MIPS
• Will the starless cores in Chamaeleon I and III turn prestellar?
• First detection of acceleration and deceleration in protostellar jets? Time variability in the Cha II outflows
• A WFI survey in the Chamaeleon II dark cloud
• Identification of transitional disks in Chamaeleon with Herschel
• The Spitzer c2d Survey of Nearby Dense Cores VII: Chemistry and Dynamics in L43
• Molecular Shattering
• The Power of SOFIA/FORCAST in Estimating Internal Luminosities of Low Mass Class 0/I Protostars