SPITZER OBSERVATIONS OF IC 2118

Journal Article · Wed Sep 01 04:00:00 EDT 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/720/1/46· OSTI ID:21460155

Guieu, S; Rebull, L M; Stauffer, J R; Noriega-Crespo, A; Cole, D M; Flagey, N; Laher, R; Stolovy, S ^[1]; Vrba, F J ^[2]; Spuck, T ^[3]; Roelofsen Moody, T ^[4]; Sepulveda, B ^[5]; Weehler, C ^[6]; Maranto, A ^[7]; Penprase, B ^[8]; Ramirez, S ^[9]

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1. Spitzer Science Center/Caltech, M/S 220-6, 1200 E. California Blvd., Pasadena, CA 91125 (United States)
2. U.S. Naval Observatory, Flagstaff Station, 10391 West Naval Observatory Rd., Flagstaff, AZ 86001-8521 (United States)
3. Oil City Area Senior High School, 10 Lynch Blvd., Oil City, PA 16301 (United States)
4. Bassick High School, 1181 Fairfield Avenue, Bridgeport, CT 06605 (United States)
5. Lincoln High School, Stockton, CA 95207 (United States)
6. Luther Burbank High School, San Antonio, TX 78204 (United States)
7. McDonogh School, Owings Mills, MD 21117 (United States)
8. Pomona College, 333 North College Way, Claremont, CA 91711 (United States)
9. NASA Exoplanet Science Institute, IPAC, M/S 1002-22, 1200 E. California Blvd., Pasadena, CA 91125 (United States)

IC 2118, also known as the Witch Head Nebula, is a wispy, roughly cometary, {approx}5 degree long reflection nebula, and is thought to be a site of triggered star formation. In order to search for new young stellar objects (YSOs), we have observed this region in seven mid- and far-infrared bands using the Spitzer Space Telescope and in four bands in the optical using the U. S. Naval Observatory 40 inch telescope. We find infrared excesses in four of the six previously known T Tauri stars in our combined infrared maps, and we find six entirely new candidate YSOs, one of which may be an edge-on disk. Most of the YSOs seen in the infrared are Class II objects, and they are all in the 'head' of the nebula, within the most massive molecular cloud of the region.

• OSTI ID: 21460155
• Journal Information: Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 720; ISSN ASJOAB; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
BINARY STARS
ERUPTIVE VARIABLE STARS
MATTER
NEBULAE
REFLECTION
STARS
T TAURI STARS
TELESCOPES
VARIABLE STARS