CO observations of the λ-orionis ring

被引：8

作者：

Lang, WJ ^{[1
]}

Masheder, MRW ^{[1
]}

机构：

[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF AUSTRALIA | 1998年 / 15卷 / 01期

关键词：

ISM; bubbles; clouds; HII regions; molecules;

D O I：

10.1071/AS98070

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present, results from a new (CO)-C-12 (J = 1 --> 0) survey of the lambda-Orionis region. The observations cover 110 square degrees uniformly on a Nyquist-sampled grid. We discover CO emission at levels far lower than possible in previous surveys, revealing a structure similar to that seen in IRAS 100 mu maps. We derive a total molecular mass of 1.1 x 10(4) M.. A possible explanation for the isolated and localised outbreak of star formation in the region is discussed.

引用

页码：70 / 73

页数：4

共 15 条

[1]

BROWN AGA, 1995, ASTRON ASTROPHYS, V300, P903

[2] EGRET OBSERVATIONS OF GAMMA-RAY EMISSION FROM THE INTERSTELLAR GAS IN ORION [J].

DIGEL, SW ;

HUNTGER, SD ;

MUKHERJEE, R .

ASTROPHYSICAL JOURNAL, 1995, 441 (01) :270-280

[3] A large-scale CO survey toward W3, W4, and W5 [J].

Digel, SW ;

Lyder, DA ;

Philbrick, AJ ;

Puche, D ;

Thaddeus, P .

ASTROPHYSICAL JOURNAL, 1996, 458 (02) :561-575

[4] STAR FORMATION IN THE LAMBDA-ORIONIS REGION .1. THE DISTRIBUTION OF YOUNG OBJECTS [J].

DUERR, R ;

IMHOFF, CL ;

LADA, CJ .

ASTROPHYSICAL JOURNAL, 1982, 261 (01) :135-150

[5]

GASUTAD JE, 1997, COMMUNICATION

[6]

HARTMANN D, 1995, COMMUNICATION

[7]

ISOBE S, 1973, IAU S, V52, P433

[8] AN EXPANDING SYSTEM OF MOLECULAR CLOUDS SURROUNDING LAMBDA-ORIONIS [J].

MADDALENA, RJ ;

MORRIS, M .

ASTROPHYSICAL JOURNAL, 1987, 323 (01) :179-192

[9] LAMBDA-ORIONIS ASSOCIATION [J].

MURDIN, P ;

PENSTON, MV .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1977, 181 (03) :657-665

[10]

REICH W, 1978, ASTRON ASTROPHYS, V64, P407

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