Spitzer Sage Observations of Large Magellanic Cloud Planetary Nebulae

doi:10.1088/0004-6256/135/2/726

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J. L. Hora et al. 2008 The Astronomical Journal 135 726 doi:10.1088/0004-6256/135/2/726

SPITZER SAGE OBSERVATIONS OF LARGE MAGELLANIC CLOUD PLANETARY NEBULAE

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J. L. Hora¹, M. Cohen², R. G. Ellis^1,3, M. Meixner⁴, R. D. Blum⁵, W. B. Latter⁶, B. A. Whitney⁷, M. R. Meade⁸, B. L. Babler⁸, R. Indebetouw⁹, K. Gordon¹⁰, C. W. Engelbracht¹⁰, B.-Q. For¹⁰, M. Block¹⁰, K. Misselt¹⁰, U. Vijh⁴ and C. Leitherer⁴

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bwhitney@spacescience.org

¹ Center for Astrophysics, 60 Garden St., MS 65, Cambridge, MA 02138, USA
² Radio Astronomy Laboratory, 601 Campbell Hall, University of California at Berkeley, Berkeley, CA 94720, USA
³ Brown University, Providence, RI 02912, USA
⁴ Space Telescope Science Institute, 3700 San Martin Way, Baltimore, MD 21218, USA
⁵ National Optical Astronomy Observatory, 950 North Cherry Ave., Tucson, AZ 85719, USA
⁶ Caltech, NASA Herschel Science Center, MS 100-22, Pasadena, CA 91125, USA
⁷ Space Science Institute, 4750 Walnut St. Suite 205, Boulder, CO 80301, USA
⁸ Department of Astronomy, 475 North Charter St., University of Wisconsin, Madison, WI 53706, USA
⁹ Department of Astronomy, University of Virginia, P.O. Box 3861, Charlottesville, VA 22903, USA
¹⁰ Steward Observatory, University of Arizona, 933 North Cherry Ave., Tucson, AZ 85719, USA

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Abstract References Cited By

We present IRAC and MIPS images and photometry of a sample of previously known planetary nebulae (PNe) from the Surveying the Agents of a Galaxy's Evolution (SAGE) survey of the Large Magellanic Cloud (LMC) performed with the Spitzer Space Telescope. Of the 233 known PNe in the survey field, 185 objects were detected in at least two of the IRAC bands, and 161 detected in the MIPS 24 μm images. Color-color and color-magnitude diagrams are presented using several combinations of IRAC, MIPS, and Two Micron All Sky Survey magnitudes. The location of an individual PN in the color-color diagrams is seen to depend on the relative contributions of the spectral components which include molecular hydrogen, polycyclic aromatic hydrocarbons (PAHs), infrared forbidden line emission from the ionized gas, warm dust continuum, and emission directly from the central star. The sample of LMC PNe is compared to a number of Galactic PNe and found not to significantly differ in their position in color-color space. We also explore the potential value of IR PNe luminosity functions (LFs) in the LMC. IRAC LFs appear to follow the same functional form as the well-established [O III] LFs although there are several PNe with observed IR magnitudes brighter than the cut-offs in these LFs.

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SPITZER SAGE OBSERVATIONS OF LARGE MAGELLANIC CLOUD PLANETARY NEBULAE

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