Tomography of the Unique Ongoing Jet in the Planetary Nebula NGC 2392
文献类型：期刊论文
| 作者 | Guerrero,M. A.3; Cazzoli,S.3; Rechy-García,J. S.2; Ramos-Larios,G.4; Montoro-Molina,B.3; Gómez-González,V. M. A.2; Toalá,J. A.2; Fang,X.1,5 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 909期号:1 |
| 关键词 | Stellar evolution Planetary nebulae Stellar jets |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/abe2aa |
| 英文摘要 | Abstract Jets (fast collimated outflows) are claimed to be the main shaping agent of the most asymmetric planetary nebulae (PNs), as they impinge on the circumstellar material at late stages of the asymptotic giant branch phase. The first jet detected in a PN was that of NGC 2392, yet there is no available image because of its low surface brightness contrast with the bright nebular emission. Here we take advantage of the tomographic capabilities of Gran Telescopio de Canarias Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía high-dispersion integral field spectroscopic observations of the jet in NGC 2392 to gain unprecedented details of its morphology and kinematics. The jet of NGC 2392 is found to emanate from the central star, break through the walls of the inner shell of this iconic PN and extend outside the nebula’s outermost regions with an S-shaped morphology suggestive of precession. At odds with the fossil jets found in mature PNs, the jet in NGC 2392 is currently being collimated and launched. The high nebular excitation of NGC 2392, which implies an He++/He ionization fraction too high to be attributed to the known effective temperature of the star, has been proposed in the past to hint at the presence of a hot white dwarf companion. In conjunction with the hard X-ray emission from the central star, the present-day jet collimation would support the presence of such a double-degenerate system where one component undergoes accretion from a remnant circumbinary disk of the common envelope phase. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-909-1-ABE2AA |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/59795]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Guerrero,M. A. |
| 作者单位 | 1.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences (NAOC), Beijing, People’s Republic of China 2.Instituto de Radioastronomía y Astrofísica, UNAM Campus Morelia, Apartado postal 3-72, 58090, Morelia, Michoacán, Mexico 3.Instituto de Astrofísica de Andalucía, Glorieta de la Astronomía s/n, E-18008, Granada, Spain; mar@iaa.es 4.Instituto de Astronomía y Meteorología, CUCEI, Univ. de Guadalajara, Av. Vallarta 2602, Arcos Vallarta, 44130 Guadalajara, Mexico 5.Department of Physics & Laboratory for Space Research, Faculty of Science, University of Hong Kong, Hong Kong, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Guerrero,M. A.,Cazzoli,S.,Rechy-García,J. S.,et al. Tomography of the Unique Ongoing Jet in the Planetary Nebula NGC 2392[J]. The Astrophysical Journal,2021,909(1). |
| APA | Guerrero,M. A..,Cazzoli,S..,Rechy-García,J. S..,Ramos-Larios,G..,Montoro-Molina,B..,...&Fang,X..(2021).Tomography of the Unique Ongoing Jet in the Planetary Nebula NGC 2392.The Astrophysical Journal,909(1). |
| MLA | Guerrero,M. A.,et al."Tomography of the Unique Ongoing Jet in the Planetary Nebula NGC 2392".The Astrophysical Journal 909.1(2021). |
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来源：国家天文台
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