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

Ikuko Matsuyanagi·Yoichi Itoh·Koji Sugitani·Yumiko Oasa·Tadashi Mukai·Motohide Tamura
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Abstract

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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Ikuko Matsuyanagi, Yoichi Itoh, Koji Sugitani, Yumiko Oasa, Tadashi Mukai, Motohide Tamura. 2006-05-23. Sequential Formation of Low-Mass Stars in the BRC 14 Region. https://doi.org/10.1093/pasj%2F58.4.l29

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