| A Theoretical Light-Curve Model for the 1985 Outburst of RS Ophiuchi. | |
| | |
MedLine Citation:
|
PMID: 10859126 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
A theoretical light-curve model of the 1985 outburst of RS Ophiuchi based on a thermonuclear runaway model is presented. The system consists of a very massive white dwarf (WD) with an accretion disk and a red giant. The early phase of the V light curve is well reproduced only by the bloated WD photosphere of the thermonuclear runaway model on a 1.35+/-0.01 M middle dot in circle WD, while the later phase is dominated both by the irradiated accretion disk and by the irradiated red giant underfilling the inner critical Roche lobe. The UV light curve is also well reproduced by the same model with a distance of 0.6 kpc to RS Oph. The envelope mass at the optical peak is estimated to be 2x10-6 M( middle dot in circle), indicating a rather high mass accretion rate of 1.2x10-7 M( middle dot in circle) yr(-1) between the 1967 and 1985 outbursts. About 90% of the envelope mass is blown off in the outburst wind, while the residual 10% (2x10-7 M( middle dot in circle)) has been left and added to the helium layer of the WD. The net increasing rate of the WD mass is 1.2x10-8 M( middle dot in circle) yr(-1). Thus, RS Oph is certainly a strong candidate for a Type Ia supernova progenitor. |
| | |
Authors:
|
Hachisu; Kato |
Related Documents
:
|
18458976 - Information transfer in moving animal groups. 7615036 - V1 responses to transparent and nontransparent motions. 20555886 - About periodicities in 3-d wavefields. 15208006 - The trial context determines adjusted localization of stimuli: reconciling the fröhlic... 17695986 - Biomechanical analysis of stress distribution in the temporomandibular joint. 12600336 - Increased musculoskeletal stiffness during load carriage at increasing walking speeds m... |
Publication Detail:
|
Type: JOURNAL ARTICLE |
Journal Detail:
|
Title: The Astrophysical journal Volume: 536 ISSN: 0004-637X ISO Abbreviation: Astrophys. J. Publication Date: 2000 Jun |
Date Detail:
|
Created Date: 2000-06-19 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9890633 Medline TA: Astrophys J Country: - |
Other Details:
|
Languages: ENG Pagination: L93-L96 Citation Subset: - |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Near-Infrared Imaging Polarimetry of the GG Tauri Circumbinary Ring.
Next Document: Detection of Lead in the Carbon-rich, Very Metal-poor Star LP 625-44: A Strong Constraint on s-Proce...