The spitzer c2d survey of large, nearby, interstellar clouds. Iv Lupus observed with MIPS

Nicholas L. Chapman, Shih Ping Lai, Lee G. Mundy, Neal J. Evans, Timothy Y. Brooke, Lucas A. Cieza, William J. Spiesman, Luisa M. Rebull, Karl R. Stapelfeldt, Alberto Noriega-Crespo, Lauranne Lanz, Lori E. Allen, Geoffrey A. Blake, Tyler L. Bourke, Paul M. Harvey, Tracy L. Huard, Jes K. Jørgensen, David W Koerner, Philip C. Myers, Deborah L. PadgettAnnelia I. Sargent, Peter Teuben, Ewine F. Van Dishoeck, Zahed Wahhaj, Kaisa E. Young

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

We present maps of 7.78 deg2 of the Lupus molecular cloud complex at 24, 70, and 160 μm. They were made with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) instrument as part of the Spitzer Legacy Program "From Molecular Cores to Planet-Forming Disks" (c2d). The maps cover three separate regions in Lupus, denoted I, III, and IV. We discuss the c2d pipeline and how our data processing differs from it. We compare source counts in the three regions with two other data sets and predicted star counts from the Wainscoat model. This comparison shows the contribution from background galaxies in Lupus I. We also create two color-magnitude diagrams using the 2MASS and MIPS data. From these results, we can identify background galaxies and distinguish them from probable young stellar objects. The sources in our catalogs are classified based on their spectral energy distribution (SED) from 2MASS and Spitzer wavelengths to create a sample of young stellar object candidates. From 2M ASS data, we create extinction maps for each region and note a strong correspondence between the extinction and the 160 μm emission. The masses we derived in each Lupus cloud from our extinction maps are compared to masses estimated from 13CO and C18 O and found to be similar to our extinction masses in some regions, but significantly different in others. Finally, based on our color-magnitude diagrams, we selected 12 of our reddest candidate young stellar objects for individual discussion. Five of the 12 appear to be newly discovered YSOs.

Original languageEnglish (US)
Pages (from-to)288-302
Number of pages15
JournalAstrophysical Journal
Volume667
Issue number1 I
DOIs
StatePublished - 2007

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Keywords

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

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Chapman, N. L., Lai, S. P., Mundy, L. G., Evans, N. J., Brooke, T. Y., Cieza, L. A., Spiesman, W. J., Rebull, L. M., Stapelfeldt, K. R., Noriega-Crespo, A., Lanz, L., Allen, L. E., Blake, G. A., Bourke, T. L., Harvey, P. M., Huard, T. L., Jørgensen, J. K., Koerner, D. W., Myers, P. C., ... Young, K. E. (2007). The spitzer c2d survey of large, nearby, interstellar clouds. Iv Lupus observed with MIPS. Astrophysical Journal, 667(1 I), 288-302. https://doi.org/10.1086/520790