A new star-forming core in the Norma filamentary dark cloud

被引:5
|
作者
Moreira, MC [1 ]
Jessop, NE [1 ]
Santos, CA [1 ]
Yun, JL [1 ]
机构
[1] Observ Astron Lisboa, P-1300 Lisbon, Portugal
来源
ASTRONOMICAL JOURNAL | 2000年 / 119卷 / 06期
关键词
ISM : clouds; ISM : individual (Sandqvist 187=Norma molecular cloud); ISM : molecules; ISM : structure; stars : formation; stars : pre-main-sequence;
D O I
10.1086/301405
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report observations at millimeter and near-infrared wavelengths of the region near IRAS 16295-4452 seen toward the Sa 187 filamentary dark cloud in the southern constellation Norma. Observations in the main rotational transitions of CO, (CO)-C-13, CS, and HCN reveal a new dense cloud core associated with IRAS 16295-4452. The core has diameter similar to 0.3 pc and total mass similar to 35 M.. Near-infrared imaging of the same region shows that the reddest (H-K = 2.9) source seen in our images, which is undetected in the J image, is located about 11 " from IRAS 16295-4452 and is likely to be the near-infrared counterpart of the IRAS source. The millimeter observations reveal the presence of a molecular outflow with robes extending in opposite directions from IRAS 16295-4452. The shape of the spectral energy distribution between 1.25 and 100 mu m suggests that IRAS 16295-4452 is a Class I protostar with total luminosity about 35 L..
引用
收藏
页码:2960 / 2967
页数:8
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