A COMPARISON OF THE RADIO AND OPTICAL TIME-EVOLUTION OF HH 1 AND 2

被引：0

作者：

Rodriguez, L. F. ^{[1
,4
]}

Raga, A. C. ^{[2
,5
]}

Rodriguez-Kamenetzky, A. ^{[1
,3
]}

Carrasco-Gonzalez, C. ^{[1
,4
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Radioastron & Astrofis, Mexico City, DF, Mexico

[2] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City, DF, Mexico

[3] UNC, IATE, X500013GR, Cordoba, Argentina

[4] Univ Nacl Autonoma Mexico, Inst Radioastron & Astrofis, AP 3-72 Xangari, Morelia 58089, Michoacan, Mexico

[5] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Ap 70-543, Mexico City 04510, DF, Mexico

来源：

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

关键词：

Herbig-Haro objects; ISM: individual objects: HH1/2; ISM: jets and outflows; ISM: kinematics and dynamics; shock waves; stars:; winds; outflows; HERBIG-HARO OBJECT-1; VLA OBSERVATIONS; PROPER MOTIONS; EMISSION; FLUXES; REGION;

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 comparison between the time-evolution over the past approximate to 20 years of the radio continuum and H alpha emission of HH 1 and 2. We find that the radio continuum and the H alpha emission of both objects show very similar trends, with HH 1 becoming fainter and HH 2 brightening quite considerably (by about a factor of 2). We also find that the F-H alpha/F-ff (H alpha to free-free continuum) ratio of HH 1 and 2 has higher values than the ones typically found in planetary nebulae (PNe), which we interpret as an indication that the H alpha and free-free emission of HH 1/2 is produced in emitting regions with lower temperatures (approximate to 2000 K) than the emission of PNe (with approximate to 10(4) K).

引用

页码：57 / 64

页数：8

共 23 条

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