The diffuse clouds towards Cyg OB2 No.5 and No.12

被引：11

作者：

Casu, S

Scappini, F

Cecchi-Pestellini, C

Olberg, M

机构：

[1] Osservatorio Astron Cagliari, INAF, I-09012 Capoterra, CA, Italy

[2] CNR, Ist Studio Mat Nanostrutturati, I-40129 Bologna, Italy

[3] Univ Lecce, Dipartimento Fis, I-73100 Lecce, Italy

[4] Onsala Space Observ, S-43900 Onsala, Sweden

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2005年 / 359卷 / 01期

关键词：

stars : individual : Cyg OB2No 5; stars : individual : Cyg OB2No 12; ISM : clouds; ISM : molecules; submillimetre;

D O I：

10.1111/j.1365-2966.2005.08873.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have investigated, in the (CO)-C-13(1-0) line, the region between the stars Cyg OB2 No. 5 and No. 12. The integrated intensity contour map reveals the existence of a condensation at 12 km s(-1) (core C), north-west of Cyg OB2 No. 5, with a core-halo structure. The morphology and the derived physical parameters make it quite similar to core A, previously discovered towards Cyg OB2 No. 12. A second condensation at 7 km s(-1), near Cyg OB2 No. 12, has been mapped in the same line (1-0) of (CO)-C-13. A summary of different observations, in all spectral regions, towards Cyg OB2 No. 5 and No. 12 is presented to provide the material for a further comprehensive discussion of this intricate and still intriguing region.

引用

页码：73 / 78

页数：6

共 24 条

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