Multi-Wavelength Properties of the Type IIb SN 2008ax
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Multi-Wavelength Properties of the Type IIb SN 2008ax
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| Id. |
49267260 |
| Titulo |
Multi-Wavelength Properties of the Type IIb SN 2008ax |
| Autor(es) |
Roming, P. W. A.
Pritchard, T. A.
Brown, P. J.
Holland, S. T.
Immler, S.
Stockdale, C. J.
Weiler, K. W.
Panagia, N.
van Dyk, S. D.
Hoversten, E. A.
Milne, P. A.
Oates, S. R.
Russell, B.
Vandrevala, C.
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| Localización |
http://authors.library.caltech.edu/16579/1/Roming2009p6243Astrophys_J_Lett.pdf
Roming, P. W. A. and Pritchard, T. A. and Brown, P. J. and Holland, S. T. and Immler, S. and Stockdale, C. J. and Weiler, K. W. and Panagia, N. and van Dyk, S. D. and Hoversten, E. A. and Milne, P. A. and Oates, S. R. and Russell, B. and Vandrevala, C. (2009) Multi-Wavelength Properties of the Type IIb SN 2008ax. Astrophysical Journal Letters, 704 (2). L118-L123. ISSN 0004-637X http://resolver.caltech.edu/CaltechAUTHORS:20091104-113301933
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| Versión |
1.0 |
| Estado |
Final
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| Descripción |
We present the UV, optical, X-ray, and radio properties of the Type IIb SN 2008ax discovered in NGC 4490. The observations in the UV are one of the earliest of a Type IIb supernova (SN). On approximately day 4 after the explosion, a dramatic upturn in the u and uvw1 (λ_c = 2600 Å) light curves occurred after an initial rapid decline which is attributed to adiabatic cooling after the initial shock breakout. This rapid decline and upturn is reminiscent of the Type IIb SN 1993J on day 6 after the explosion. Optical/near-IR spectra taken around the peak reveal prominent Hα, He I, and Ca II absorption lines. A fading X-ray source is also located at the position of SN 2008ax, implying an interaction of the SN shock with the surrounding circumstellar material and a mass-loss rate of the progenitor of M (overdot) = (9 ± 3) × 10^(−6) M_☉ yr^(−1). The unusual time evolution (14 days) of the 6 cm peak radio luminosity provides further evidence that the mass-loss rate is low. Combining the UV, optical, X-ray, and radio data with models of helium exploding stars implies the progenitor of SN 2008ax was an unmixed star in an interacting binary. Modeling of the SN light curve suggests a kinetic energy (E_k) of 0.5 × 10^(51) erg, an ejecta mass (M_(ej)) of 2.9 M_☉, and a nickel mass (M_(Ni)) of 0.06 M_☉.
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| Tipo |
application/pdf
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| Tipo de recurso |
Article
PeerReviewed
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| Tipo de Interactividad |
Expositivo
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| Nivel de Interactividad |
muy bajo
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| Audiencia |
Estudiante
Profesor
Autor
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| Estructura |
Atomic |
| Coste |
no
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| Copyright |
sí
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| Formatos |
application/pdf
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| Requerimientos técnicos |
Browser: Any
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| Relación |
[References] http://resolver.caltech.edu/CaltechAUTHORS:20091104-113301933
[References] http://authors.library.caltech.edu/16579/
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| Fecha de contribución |
05-nov-2009 |
| Contacto |
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