High-resolution H2O maser observations toward IRAS sources in bright-rimmed clouds

作者：Valdettaro R^*; Migenes V; Trinidad M A; Brand J; Palla F

来源：Astrophysical Journal, 2008, 675(2): 1352-1360.

DOI：10.1086/527409

• ISM : globules
• masers
• radio lines : ISM
• stars : formation

Bright-rimmed clouds (BRCs) are clouds that have been compressed by an external ionization shock front. We present the first high-resolution VLA observations of 20 of these BRCs in the northern hemisphere. We detected water maser emission from three objects: IRAS 21346+5714 (BRC 36), IRAS 21388+5622 (BRC 37), and IRAS 21445+5712 (BRC 39). The low detection rate supports the evidence that BRCs produce mostly low-luminosity objects, for which maser emission is weak and episodic, and suggests that the embedded sources are in a more advanced evolutionary phase than Class 0 objects.

• 出版日期2008-3-10