Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32686
DC Field | Value | Language |
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dc.contributor.author | Chugai, N. N. | en_US |
dc.contributor.author | Danziger, I. J. | en_US |
dc.contributor.author | DELLA VALLE, Massimo | en_US |
dc.date.accessioned | 2022-10-04T14:35:01Z | - |
dc.date.available | 2022-10-04T14:35:01Z | - |
dc.date.issued | 1995 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32686 | - |
dc.description.abstract | An optical spectrum of SN 1978K (NGC 1313) in the range of 4000-7200 A was obtained on 1992 October 22, i.e. 14.4 yr after the outburst. The spectrum is still dominated by the narrow (FWHM<=560 km s^-1) Hα line having a luminosity 2.2x10^38 erg s^-1 (D=3.7 Mpc, A_V=0.64 mag), 1.5-2 times lower than the values derived from published data for 1989 December and 1990 October. There is no evidence for a broad Hα component (HWZI~3000-10000 km s^-1) with an upper limit of luminosity ~3x10^36 erg s^-1. We suggest that the optical emission of SN 1978K originates from radiative shock waves propagating in the dense (~4x10^6 cm^-3) clouds of a circumstellar wind. The cloud shock waves are driven by the expanding low-mass (<e1>M<=</e1>2M_solar) supernova ejecta with the present radius ~(2-3)x10^17 cm. The mass of circumstellar material involved in the dynamical interaction is ~=1M_solar and the corresponding mass-loss rate of pre-SN wind is ~2x10^-4 M_solar yr^-1. The observed X-ray emission is attributed to the shock waves in the boundary layer of the same population of clouds. Alternatively, however, the X-ray emission might emanate from the shock waves in a different cloud population with a lower density. | en_US |
dc.language.iso | eng | en_US |
dc.title | Optical spectrum of SN 1978K: emission from shocked clouds in the circumstellar wind | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/276.2.530 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/276/2/530/998888 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 276 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 530 | en_US |
dc.relation.lastpage | 536 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 1995MNRAS.276..530C | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.orcid | 0000-0003-3142-5020 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
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document.pdf | Pdf editoriale | 803.25 kB | Adobe PDF | View/Open |
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