Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star?
Abstract The ionizing star of the planetary nebula NGC 2392 is too cool to explain the high excitation of the nebular shell, and an additional ionizing source is necessary. We use photoionization modeling to estimate the temperature and luminosity of the putative companion. Our results show it is li...
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Online Access: | http://dx.doi.org/10.1017/s1743921311028134 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1743921311028134 |
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crcambridgeupr:10.1017/s1743921311028134 2023-05-15T16:07:58+02:00 Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star? Danehkar, A. Frew, D. J. Parker, Q. A. De Marco, O. 2011 http://dx.doi.org/10.1017/s1743921311028134 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1743921311028134 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Proceedings of the International Astronomical Union volume 7, issue S282, page 470-471 ISSN 1743-9213 1743-9221 Astronomy and Astrophysics Space and Planetary Science journal-article 2011 crcambridgeupr https://doi.org/10.1017/s1743921311028134 2022-04-07T08:04:14Z Abstract The ionizing star of the planetary nebula NGC 2392 is too cool to explain the high excitation of the nebular shell, and an additional ionizing source is necessary. We use photoionization modeling to estimate the temperature and luminosity of the putative companion. Our results show it is likely to be a very hot ( T eff ≃ 250 kK), dense white dwarf. If the stars form a close binary, they may merge within a Hubble time, possibly producing a Type Ia supernova. Article in Journal/Newspaper eskimo* Cambridge University Press (via Crossref) Hubble ENVELOPE(158.317,158.317,-80.867,-80.867) Proceedings of the International Astronomical Union 7 S282 470 471 |
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Open Polar |
collection |
Cambridge University Press (via Crossref) |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Astronomy and Astrophysics Space and Planetary Science |
spellingShingle |
Astronomy and Astrophysics Space and Planetary Science Danehkar, A. Frew, D. J. Parker, Q. A. De Marco, O. Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star? |
topic_facet |
Astronomy and Astrophysics Space and Planetary Science |
description |
Abstract The ionizing star of the planetary nebula NGC 2392 is too cool to explain the high excitation of the nebular shell, and an additional ionizing source is necessary. We use photoionization modeling to estimate the temperature and luminosity of the putative companion. Our results show it is likely to be a very hot ( T eff ≃ 250 kK), dense white dwarf. If the stars form a close binary, they may merge within a Hubble time, possibly producing a Type Ia supernova. |
format |
Article in Journal/Newspaper |
author |
Danehkar, A. Frew, D. J. Parker, Q. A. De Marco, O. |
author_facet |
Danehkar, A. Frew, D. J. Parker, Q. A. De Marco, O. |
author_sort |
Danehkar, A. |
title |
Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star? |
title_short |
Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star? |
title_full |
Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star? |
title_fullStr |
Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star? |
title_full_unstemmed |
Photoionization Models of the Eskimo Nebula: Evidence for a Binary Central Star? |
title_sort |
photoionization models of the eskimo nebula: evidence for a binary central star? |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s1743921311028134 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1743921311028134 |
long_lat |
ENVELOPE(158.317,158.317,-80.867,-80.867) |
geographic |
Hubble |
geographic_facet |
Hubble |
genre |
eskimo* |
genre_facet |
eskimo* |
op_source |
Proceedings of the International Astronomical Union volume 7, issue S282, page 470-471 ISSN 1743-9213 1743-9221 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s1743921311028134 |
container_title |
Proceedings of the International Astronomical Union |
container_volume |
7 |
container_issue |
S282 |
container_start_page |
470 |
op_container_end_page |
471 |
_version_ |
1766404009483042816 |