The Extreme Type I Planetary Nebula M2-52
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2002
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| _version_ | 1876470735294169088 |
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| author | S. Medina |
| author_facet | S. Medina |
| contents | The Extreme Type I Planetary Nebula M2-52 S. Medina M. Peña Física, Astronomía y Matemáticas 52) ISM: ABUNDANCES ISM: KINEMATICS AND DYNAMICS PLANETARY NEBULAE: INDIVIDUAL (M2 High-resolution spectrophotometric data of the central zone of the Br-typeplanetary nebula M2-52 are presented. The nebula has a rich spectrum, with highand low excitation lines. The chemical composition derived from the spectra showsthat He and N are very enhanced in M2-52. Thus, this object can be classified asan extreme Peimbert`s Type I PN. The chemical composition of the ionized gasis: He/H = 0:165 0:010, O/H = (2:6 0:5) x 10_4, N/O = 2:3 0:3, Ne/O =0:37 0:10, Ar/O = (9:2 2:0) x 10_3 y S/O > 2:0 x 10_3 The expansionvelocity of the nebula is, on average, about 20 _ 2 km s_1, but the low ionizationspecies (N+ and S+) seem to systematically show slightly lower expansion velocities(18 km s_1) than O++ and He+ which have vexp = 20 km s_1, while H+ and He++have vexp _ 22 km s_1. This behavior could indicate that the outer zones of theionized gas are being decelerated by the molecular ring located around the centralstar. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57138103 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.38 |
| format | Artículo científico |
| id | redalyc_57138103 |
| institution | Redalyc |
| language | en |
| publishDate | 2002 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | The Extreme Type I Planetary Nebula M2-52 S. Medina Física, Astronomía y Matemáticas 52) ISM: ABUNDANCES ISM: KINEMATICS AND DYNAMICS PLANETARY NEBULAE: INDIVIDUAL (M2 The Extreme Type I Planetary Nebula M2-52 S. Medina M. Peña Física, Astronomía y Matemáticas 52) ISM: ABUNDANCES ISM: KINEMATICS AND DYNAMICS PLANETARY NEBULAE: INDIVIDUAL (M2 High-resolution spectrophotometric data of the central zone of the Br-typeplanetary nebula M2-52 are presented. The nebula has a rich spectrum, with highand low excitation lines. The chemical composition derived from the spectra showsthat He and N are very enhanced in M2-52. Thus, this object can be classified asan extreme Peimbert`s Type I PN. The chemical composition of the ionized gasis: He/H = 0:165 0:010, O/H = (2:6 0:5) x 10_4, N/O = 2:3 0:3, Ne/O =0:37 0:10, Ar/O = (9:2 2:0) x 10_3 y S/O > 2:0 x 10_3 The expansionvelocity of the nebula is, on average, about 20 _ 2 km s_1, but the low ionizationspecies (N+ and S+) seem to systematically show slightly lower expansion velocities(18 km s_1) than O++ and He+ which have vexp = 20 km s_1, while H+ and He++have vexp _ 22 km s_1. This behavior could indicate that the outer zones of theionized gas are being decelerated by the molecular ring located around the centralstar. 2002 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57138103 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.38 |
| title | The Extreme Type I Planetary Nebula M2-52 |
| topic | Física, Astronomía y Matemáticas 52) ISM: ABUNDANCES ISM: KINEMATICS AND DYNAMICS PLANETARY NEBULAE: INDIVIDUAL (M2 |
| url | https://www.redalyc.org/articulo.oa?id=57138103 |