A CATALOG OF BRIGHT-RIMMED CLOUDS WITH IRAS POINT SOURCES - CANDIDATES FOR STAR-FORMATION BY RADIATION-DRIVEN IMPLOSION .2. THE SOUTHERN-HEMISPHERE

被引:101
作者
SUGITANI, K [1 ]
OGURA, K [1 ]
机构
[1] KOKUGAKUIN UNIV,SHIBUYA KU,TOKYO 150,JAPAN
关键词
CATALOGS; H-II REGIONS; STARS; FORMATION; INFRARED;
D O I
10.1086/191964
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Forty-five bright-rimmed clouds associated with IRAS point sources have been selected in the southern hemisphere from the ESO (R) Atlas in addition to the 44 objects of the northern work (Paper I). Again they are good candidates for the sites of star formation induced by radiation-driven implosion. Four of them are known to be associated with HH objects, and three with molecular outflows. Most of their sizes are less than or similar to 1 pc, and the luminosities of the associated IRAS sources, approximately 20 to 3 x 10(4) L., are much larger than those of the IRAS sources associated with Bok globules or dense cores in dark cloud complexes, both having a similar mass range. This suggests that intermediate-mass stars or multiple-star systems are mainly formed in bright-rimmed clouds. IRAS luminosity to cloud mass ratios are significantly greater than those in Bok globules or dense cores. The results confirm most of the findings of Paper I.
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页码:163 / &
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