UNVEILING THE HOT MOLECULAR CORE IN THE ULTRACOMPACT H II REGION WITH EXTENDED EMISSION G12.21-0.10

被引：0

作者：

de la Fuente, E. ^{[1
,8
]}

Trinidad, M. A. ^{[2
]}

Porras, A. ^{[3
]}

Rodriguez-Rico, C. ^{[2
]}

Araya, E. D. ^{[4
]}

Kurtz, S. ^{[5
,9
]}

Hofner, P. ^{[6
,7
]}

Nigoche-Netro, A. ^{[1
,8
]}

机构：

[1] CUCEI, Inst Astron & Meteorol, Guadalajara, Jalisco, Mexico

[2] Univ Guanajuato, Dept Astron, Apdo Postal 144, Guanajuato 36000, Mexico

[3] Inst Nacl Astrofis Opt & Electr, Luis E Erro 1, Puebla 72840, Mexico

[4] Western Illinois Univ, Phys Dept, 1 Univ Circle, Macomb, IL 61455 USA

[5] UNAM, Inst Radioastron & Astrofis, Morelia, Michoacan, Mexico

[6] New Mexico Inst Min & Technol, Phys Dept, 801 Leroy Pl, Socorro, NM 87801 USA

[7] Natl Radio Astron Observ, 1003 Lopezville Rd, Socorro, NM 87801 USA

[8] CUCEI, Inst Astron & Meteorol, Dept Fis, Av Vallarta 2602, Guadalajara 44130, Jalisco, Mexico

[9] Univ Nacl Autonoma Mexico, Inst Radioastron & Astrophys, Antigua Carretera Patzcuaro 8701 Ex Hda, Morelia 58089, Mich, Mexico

来源：

REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA | 2018年 / 54卷 / 01期

关键词：

ISM: clouds; ISM: molecules; molecular processes; radio continuum: ISM; radio lines: ISM; stars: formation; STAR-FORMING REGIONS; WATER MASER EMISSION; HII-REGIONS; INTERSTELLAR AMMONIA; CLOUD; LINE; CS; THERMOMETER; CONTINUUM; DUST;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a multiwavelength study of the cometary H II region G12.210.10 using the VLA and OVRO. Both radio continuum (0.3, 0.7, 2 and 3.6 cm) and spectral lines of H41 alpha, (CS)-C-13(2-1) & (1-0), and NH3(2,2) & (4,4) observations are included. We find two 3 mm continuum peaks toward G12.2-0.10; one of them is spatially coincident with the UC H II region, while the other coincides spatially with a molecular clump. We also find that the 0.7, 2 and 3.6 cm continuum and H41 alpha line are only detected toward the UC H II region, while the (CS)-C-13, and NH3 are spatially associated with the molecular clump. Based on the morphology, kinetic temperature (approximate to 86 K), volumetric density (approximate to 1.5x10(6) cm(-3) ) and linear size (approximate to 0.22 pc) of the molecular clump, we suggest this source is consistent with a hot molecular core.

引用

页码：129 / 141

页数：13

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