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

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

2006-05-23

arxiv.org/abs/astro-ph/0605579v1

Astronomy and Astrophysics

Astrophysics

12 pages, 5 figures, 1 table, PASJ accepted

Scientific paper

We have carried out a deep near-infrared survey of a bright-rimmed molecular cloud, BRC 14 (IC 1848A). The 10 sigma limiting magnitude of the survey is 17.7 mag at the K-band. Seventy-four sources are classified as young stellar object (YSO) candidates based on the near-infrared color-color diagram. The faintest YSO 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 star formation; fraction of the YSO candidates, extinctions of all sources, and near-infrared excesses of the YSO candidates. All indicators increase from outside of the rim to the center of the molecular cloud, which suggests that the formation of the low-mass stars in the BRC 14 region proceeds from outside to the center of the cloud.

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