The spitzer survey of interstellar clouds in the gould belt. II. the cepheus flare observed with IRAC and MIPS
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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The spitzer survey of interstellar clouds in the gould belt. II. the cepheus flare observed with IRAC and MIPS. / Kirk, Jason M.; Ward-Thompson, Derek; Di Francesco, James; Bourke, Tyler L.; Evans II, Neal J.; Merín, Bruno; Allen, Lori E.; Cieza, Lucas A.; Dunham, Michael M.; Harvey, Paul; Huard, Tracy; Jørgensen, Jes K.; Miller, Jennifer F.; Noriega-Crespo, Alberto; Peterson, Dawn; Ray, Tom P.; Rebull, Luisa M.
I: Astrophysical Journal, Supplement Series, Bind 185, Nr. 1, 23.12.2009, s. 198-249.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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T1 - The spitzer survey of interstellar clouds in the gould belt. II. the cepheus flare observed with IRAC and MIPS
AU - Kirk, Jason M.
AU - Ward-Thompson, Derek
AU - Di Francesco, James
AU - Bourke, Tyler L.
AU - Evans II, Neal J.
AU - Merín, Bruno
AU - Allen, Lori E.
AU - Cieza, Lucas A.
AU - Dunham, Michael M.
AU - Harvey, Paul
AU - Huard, Tracy
AU - Jørgensen, Jes K.
AU - Miller, Jennifer F.
AU - Noriega-Crespo, Alberto
AU - Peterson, Dawn
AU - Ray, Tom P.
AU - Rebull, Luisa M.
PY - 2009/12/23
Y1 - 2009/12/23
N2 - We present Spitzer Infrared Array Camera (IRAC; ∼2 deg2) and Multiband Imaging Photometer for Spitzer (MIPS; ∼8 deg2) observations of the Cepheus Flare, which is associated with the Gould Belt, at an approximate distance of ∼300 pc. Around 6500 sources are detected in all four IRAC bands, of which ∼900 have MIPS 24 μm detections. We identify 133 young stellar object (YSO) candidates using color-magnitude diagram techniques, and a large number of the YSO candidates are associated with the NGC 7023 reflection nebula. Cross-identifications were made with the Guide Star Catalog II and the IRAS Faint Source Catalog, and spectral energy distributions (SEDs) were constructed. SED modeling was conducted to estimate the degree of infrared excess. It was found that a large majority of disks were optically thick accreting disks, suggesting that there has been little disk evolution in these sources. Nearest-neighbor clustering analysis identified four small protostellar groups (L1228, L1228N, L1251A, and L1251B) with 5-15 members each and the larger NGC 7023 association with 32 YSO members. The star-formation efficiency for cores with clusters of protostars and for those without clusters was found to be ∼8% and ∼1%, respectively. The cores L1155, L1241, and L1247 are confirmed to be starless down to our luminosity limit of L bol = 0.06 L⊙.
AB - We present Spitzer Infrared Array Camera (IRAC; ∼2 deg2) and Multiband Imaging Photometer for Spitzer (MIPS; ∼8 deg2) observations of the Cepheus Flare, which is associated with the Gould Belt, at an approximate distance of ∼300 pc. Around 6500 sources are detected in all four IRAC bands, of which ∼900 have MIPS 24 μm detections. We identify 133 young stellar object (YSO) candidates using color-magnitude diagram techniques, and a large number of the YSO candidates are associated with the NGC 7023 reflection nebula. Cross-identifications were made with the Guide Star Catalog II and the IRAS Faint Source Catalog, and spectral energy distributions (SEDs) were constructed. SED modeling was conducted to estimate the degree of infrared excess. It was found that a large majority of disks were optically thick accreting disks, suggesting that there has been little disk evolution in these sources. Nearest-neighbor clustering analysis identified four small protostellar groups (L1228, L1228N, L1251A, and L1251B) with 5-15 members each and the larger NGC 7023 association with 32 YSO members. The star-formation efficiency for cores with clusters of protostars and for those without clusters was found to be ∼8% and ∼1%, respectively. The cores L1155, L1241, and L1247 are confirmed to be starless down to our luminosity limit of L bol = 0.06 L⊙.
KW - Infrared: general
KW - ISM: individual (Cepheus Flare)
KW - Stars: formation
UR - http://www.scopus.com/inward/record.url?scp=72149117117&partnerID=8YFLogxK
U2 - 10.1088/0067-0049/185/1/198
DO - 10.1088/0067-0049/185/1/198
M3 - Journal article
AN - SCOPUS:72149117117
VL - 185
SP - 198
EP - 249
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1
ER -
ID: 229737658