Sequential Formation of Low-Mass Stars in the BRC 14 Region* | Zendy

Ikuko Matsuyanagi | Zendy; Yoichi Itoh | Zendy; Koji Sugitani | Zendy; Yumiko Oasa | Zendy; T. Mukai | Zendy; Motohide Tamura | Zendy

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Sequential Formation of Low-Mass Stars in the BRC 14 Region^*

Author(s) -

Ikuko Matsuyanagi,

Yoichi Itoh,

Koji Sugitani,

Yumiko Oasa,

T. Mukai,

Motohide Tamura

Publication year - 2006

Publication title -

publications of the astronomical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.99

H-Index - 110

eISSN - 2053-051X

pISSN - 0004-6264

DOI - 10.1093/pasj/58.4.l29

Subject(s) - physics , astrophysics , stars , molecular cloud , young stellar object , star formation , limiting magnitude , limiting , infrared , astronomy , hertzsprung–russell diagram , low mass , solar mass , high mass , stellar evolution , mechanical engineering , engineering

We have carried out a deep near-infrared survey of a bright-rimmed molecularcloud, BRC 14 (IC 1848A). The 10 sigma limiting magnitude of the survey is 17.7mag at the K-band. Seventy-four sources are classified as young stellar object(YSO) candidates based on the near-infrared color-color diagram. The faintestYSO candidates may have masses of an order of tenths of the solar mass,assuming the age of 1 Myr. We examined three values as indicators of starformation; fraction of the YSO candidates, extinctions of all sources, andnear-infrared excesses of the YSO candidates. All indicators increase fromoutside of the rim to the center of the molecular cloud, which suggests thatthe formation of the low-mass stars in the BRC 14 region proceeds from outsideto the center of the cloud.Comment: 12 pages, 5 figures, 1 table, PASJ accepte

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