THE NORTH AMERICAN AND PELICAN NEBULAE. II. MIPS OBSERVATIONS AND ANALYSIS

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/193/2/25· OSTI ID:21560406

Rebull, L M; Stauffer, J R; Noriega-Crespo, A; Carey, S J; Padgett, D L ^[1]; Guieu, S ^[2]; Hillenbrand, L A; Carpenter, J M ^[3]; Stapelfeldt, K R ^[4]; Cole, D M ^[5]; Strom, S E

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1. Spitzer Science Center/Caltech, M/S 220-6, 1200 East California Boulevard, Pasadena, CA 91125 (United States)
2. European Southern Observatory, Alonso de Cordova 3107, Vitacura, Santiago (Chile)
3. Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States)
4. Jet Propulsion Laboratory, MS 183-900, California Institute of Technology, Pasadena, CA 91109 (United States)
5. Raytheon, Pasadena, CA (United States)

We present observations of {approx}7 deg{sup 2} of the North American and Pelican Nebulae region at 24, 70, and 160 {mu}m with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). We incorporate the MIPS observations with earlier Spitzer Infrared Array Camera (IRAC) observations, as well as archival near-infrared (IR) and optical data. We use the MIPS data to identify 1286 young stellar object (YSO) candidates. IRAC data alone can identify 806 more YSO candidates, for a total of 2076 YSO candidates. Prior to the Spitzer observations, there were only {approx}200 YSOs known in this region. Three subregions within the complex are highlighted as clusters: the Gulf of Mexico, the Pelican, and the Pelican's Hat. The Gulf of Mexico cluster is subject to the highest extinction (A{sub V} at least {approx}30) and has the widest range of infrared colors of the three clusters, including the largest excesses and by far the most point-source detections at 70 {mu}m. Just 3% of the cluster members were previously identified; we have redefined this cluster as about 10-100 times larger (in projected area) than was previously realized.

• OSTI ID: 21560406
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 193, Issue 2; Other Information: DOI: 10.1088/0067-0049/193/2/25; ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CAMERAS
INFRARED RADIATION
NEBULAE
PHOTOMETERS
POINT SOURCES
STARS
TELESCOPES
ELECTROMAGNETIC RADIATION
MEASURING INSTRUMENTS
RADIATION SOURCES
RADIATIONS