ON THE POSSIBLE BIPOLAR NATURE OF 21 MICRON IRAS SOURCES

被引：41

作者：

HRIVNAK, BJ

KWOK, S

机构：

[1] UNIV COLORADO, NATL INST STAND & TECHNOL, JOINT INST LAB ASTROPHYS, BOULDER, CO 80309 USA

[2] UNIV CALGARY, DEPT PHYS & ASTRON, CALGARY T2N 1N4, ALBERTA, CANADA

来源：

ASTROPHYSICAL JOURNAL | 1991年 / 368卷 / 02期

关键词：

INFRARED; SOURCES; STARS; CIRCUMSTELLAR SHELLS; MASS LOSS;

D O I：

10.1086/169720

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the discovery of another IRAS source (22574 + 6609) showing the unidentified 21-mu-m emission feature. Its overall energy distribution is similar to the well-known edge-on bipolar nebulae AFGL 2688 and AFGL 618. Ground-based optical and infrared observations of this object and two other 21-mu-m sources show that while all three have very similar infrared properties, they differ greatly in the visual region. We suggest that all three of these 21-mu-m sources are intrinsically similar bipolar nebulae viewed at different orientations.

引用

页码：564 / +

共 43 条

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Abell, 1963, BASIC ASTRONOMICAL D, P481

[2]

[Anonymous], 1988, IRAS POINT SOURCE CA

[3]

BACHILLER R, 1988, ASTRON ASTROPHYS, V196, pL5

[4]

Beichman C.A., 1988, IRAS CATALOGS ATLASE

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