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Article: ROSAT X-ray observations of four planetary nebulae
Title | ROSAT X-ray observations of four planetary nebulae |
---|---|
Authors | |
Keywords | Planetary Nebulae: Individual (Ngc 1535, A36, Ngc 7293, Ngc 3587) X-Rays: Ism |
Issue Date | 1996 |
Publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0004-637X |
Citation | The Astrophysical Journal, 1996, v. 466 n. 1 pt. 1, p. 352-358 How to Cite? |
Abstract | We report ROSAT Position Sensitive Proportional Counter (PSPC) observations of four planetary nebulae. The observations show that all four nebulae have two-component spectra. A two-component model consisting of a blackbody and a Raymond-Smith thermal plasma is fitted to the observed ROSAT PSPC spectra of NGC 1535, Abell 36, and NGC 7293. For all three cases, the temperatures of the blackbody component are apparently higher than those of the stellar photospheres, indicating nonblackbody atmospheres. In all cases, the temperatures of the high-energy component can be attributed to a hot plasma associated with the possible stellar coronae or the "hot bubbles" predicted by the interacting winds model. The spectral energy distribution of NGC 1535 is constructed and modeled by incorporating our X-ray spectrum into existing data in UV, optical, near-infrared, and far-infrared wavelengths. © 1996. The American Astronomical Society. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/179684 |
ISSN | 2023 Impact Factor: 4.8 2023 SCImago Journal Rankings: 1.905 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Leahy, DA | en_US |
dc.contributor.author | Zhang, CY | en_US |
dc.contributor.author | Volk, K | en_US |
dc.contributor.author | Kwok, S | en_US |
dc.date.accessioned | 2012-12-19T10:02:49Z | - |
dc.date.available | 2012-12-19T10:02:49Z | - |
dc.date.issued | 1996 | en_US |
dc.identifier.citation | The Astrophysical Journal, 1996, v. 466 n. 1 pt. 1, p. 352-358 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/179684 | - |
dc.description.abstract | We report ROSAT Position Sensitive Proportional Counter (PSPC) observations of four planetary nebulae. The observations show that all four nebulae have two-component spectra. A two-component model consisting of a blackbody and a Raymond-Smith thermal plasma is fitted to the observed ROSAT PSPC spectra of NGC 1535, Abell 36, and NGC 7293. For all three cases, the temperatures of the blackbody component are apparently higher than those of the stellar photospheres, indicating nonblackbody atmospheres. In all cases, the temperatures of the high-energy component can be attributed to a hot plasma associated with the possible stellar coronae or the "hot bubbles" predicted by the interacting winds model. The spectral energy distribution of NGC 1535 is constructed and modeled by incorporating our X-ray spectrum into existing data in UV, optical, near-infrared, and far-infrared wavelengths. © 1996. The American Astronomical Society. All rights reserved. | en_US |
dc.language | eng | en_US |
dc.publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0004-637X | en_US |
dc.relation.ispartof | The Astrophysical Journal | en_US |
dc.subject | Planetary Nebulae: Individual (Ngc 1535, A36, Ngc 7293, Ngc 3587) | en_US |
dc.subject | X-Rays: Ism | en_US |
dc.title | ROSAT X-ray observations of four planetary nebulae | en_US |
dc.type | Article | en_US |
dc.identifier.email | Kwok, S: deannote@hku.hk | en_US |
dc.identifier.authority | Kwok, S=rp00716 | en_US |
dc.description.nature | published_or_final_version | en_US |
dc.identifier.doi | 10.1086/177514 | - |
dc.identifier.scopus | eid_2-s2.0-21344471048 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-21344471048&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 466 | en_US |
dc.identifier.issue | 1 pt. 1 | en_US |
dc.identifier.spage | 352 | en_US |
dc.identifier.epage | 358 | en_US |
dc.identifier.isi | WOS:A1996UW72100027 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Leahy, DA=7004941920 | en_US |
dc.identifier.scopusauthorid | Zhang, CY=38260889100 | en_US |
dc.identifier.scopusauthorid | Volk, K=7006571965 | en_US |
dc.identifier.scopusauthorid | Kwok, S=22980498300 | en_US |
dc.identifier.issnl | 0004-637X | - |