High-resolution Very Large Array observations of 18 MIPSGAL bubbles

被引：10

作者：

Ingallinera, A. ^{[1
]}

Trigilio, C. ^{[1
]}

Leto, P. ^{[1
]}

Umana, G. ^{[1
]}

Buemi, C. ^{[1
]}

Bufano, F. ^{[1
]}

Agliozzo, C. ^{[2
,3
]}

Riggi, S. ^{[1
]}

Flagey, N. ^{[4
]}

Silva, K. ^{[4
,5
]}

Cerrigone, L. ^{[6
]}

Cavallaro, F. ^{[1
,7
,8
]}

机构：

[1] INAF Osseivatorio Astrofis Catania, Via Santa Sofia 78, I-95123 Catania, Italy

[2] Millennium Inst Astrophys, Santiago 7591245, Chile

[3] Univ Andres Bello, Avda Republ 252, Santiago 8320000, Chile

[4] Canada Erance Hawaii Telescope Corp, 65-1238 Mamalahoa Hwy, Kamuela, HI 96743 USA

[5] Univ Hawaii, Dept Phys & Astron, Hilo, HI 96720 USA

[6] ASTRON, POB 2, NL-7990 AA Dwingeloo, Netherlands

[7] Univ Catania, Dipartimento Fis & Astron, Via Santa Sofia 64, I-95123 Catania, Italy

[8] CSIRO Astron & Space Sci, POB 76, Epping, NSW 1710, Australia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2016年 / 463卷 / 01期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

stars: evolution; stars: massive; planetary nebulae: general; radio continuum: stars; H-ALPHA SURVEY; NONTHERMAL RADIO-EMISSION; SPITZER-SPACE-TELESCOPE; GALACTIC PLANE IPHAS; M COMPACT BUBBLES; MU-M; MASSIVE STARS; NEBULAE; CATALOG; POPULATION;

D O I：

10.1093/mnras/stw2053

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present radio observations of 18 MIPSGAL bubbles performed at 5 GHz (6 cm) with the Karl G. Jansky Very Large Array in configuration B and BnA. The observations were aimed at understanding what kind of information high-resolution and high-sensitivity radio maps can supply on the circum-stellar envelopes of different kinds of evolved stars and what their comparison with infrared images with similar resolution can tell us. We found that the 18 bubbles can be grouped into five categories according to their radio morphology. The three bubbles presenting a central point source in the radio images all correspond to luminous blue variable star candidates. 11 bubbles show an elliptical shape and the total lack of a central object in the radio, and are likely associated with planetary nebulae. Under this assumption, we derive their distance, their ionized mass and their distribution on the Galactic plane. We discuss the possibility that the MIPSGAL bubbles catalogue (428 objects) may contain a large fraction of all Galactic planetary nebulae located at a distance between 1.4 kpc and 6.9 kpc and lying in the MIPSGAL field of view. Among the remaining bubbles, we identify also an H ii region and a proto-planetary nebula candidate.

引用

页码：723 / 739

页数：17

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