The spitzer c2d survey of large, nearby, interstellar clouds. I. Chamaeleon II observed with MIPS

Kaisa E. Young, Paul M. Harvey, Timothy Y. Brooke, Nicholas Chapman, Jens Kauffmann, Frank Bertoldi, Shih Ping Lai, Juan Alcalá, Tyler L. Bourke, William Spiesman, Lori E. Allen, Geoffrey A. Blake, Neal J. Evans, David W. Koerner, Lee G. Mundy, Philip C. Myers, Deborah L. Padgett, Anandi Salinas, Anneila I. Sargent, Karl R. StapelfeldtPeter Teuben, Ewine F. Van Dishoeck, Zahed Wahhaj

Research output: Contribution to journalArticle

47 Scopus citations

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 languageEnglish (US)
Pages (from-to)283-297
Number of pages15
JournalAstrophysical Journal
Volume628
Issue number1 I
DOIs
StatePublished - Jul 20 2005

Keywords

  • ISM: clouds
  • Infrared: stars
  • Stars: formation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Young, K. E., Harvey, P. M., Brooke, T. Y., Chapman, N., Kauffmann, J., Bertoldi, F., Lai, S. P., Alcalá, J., Bourke, T. L., Spiesman, W., Allen, L. E., Blake, G. A., Evans, N. J., Koerner, D. W., Mundy, L. G., Myers, P. C., Padgett, D. L., Salinas, A., Sargent, A. I., ... Wahhaj, Z. (2005). The spitzer c2d survey of large, nearby, interstellar clouds. I. Chamaeleon II observed with MIPS. Astrophysical Journal, 628(1 I), 283-297. https://doi.org/10.1086/430597