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Supernova 2010ev: A reddened high velocity gradient type Ia supernova

Authordc.contributor.authorGutiérrez Aveldaño, Claudia 
Authordc.contributor.authorGonzález Gaitán, Santiago 
Authordc.contributor.authorFolatelli, Gastón 
Authordc.contributor.authorPignata Libralato, Giuliano 
Authordc.contributor.authorAnderson, Joseph 
Authordc.contributor.authorHamuy Wackenhut, Mario 
Authordc.contributor.authorStritzinger, Maximilian 
Authordc.contributor.authorTaubenberger, Stefan 
Authordc.contributor.authorBufano, Filomena 
Authordc.contributor.authorOlivares, Felipe 
Authordc.contributor.authorHaislip, Joshua B. 
Authordc.contributor.authorReichart, Daniel 
Cita de ítemdc.identifier.citationA&A 590, A5 (2016)es_ES
Abstractdc.description.abstractAims. We present and study the spectroscopic and photometric evolution of the type Ia supernova (SN Ia) 2010ev. Methods. We obtain and analyze multiband optical light curves and optical/near-infrared spectroscopy at low and medium resolution spanning −7 days to +300 days from the B-band maximum. Results. A photometric analysis shows that SN 2010ev is a SN Ia of normal brightness with a light-curve shape of ∆m15(B) = 1.12 ± 0.02 and a stretch s = 0.94 ± 0.01 suffering significant reddening. From photometric and spectroscopic analysis, we deduce a color excess of E(B − V) = 0.25 ± 0.05 and a reddening law of Rv = 1.54 ± 0.65. Spectroscopically, SN 2010ev belongs to the broad-line SN Ia group, showing stronger than average Si ii λ6355 absorption features. We also find that SN 2010ev is a high velocity gradient SN with ˙vSi = 164 ± 7 km s−1 d −1 . The photometric and spectral comparison with other supernovae shows that SN 2010ev has similar colors and velocities to SN 2002bo and SN 2002dj. The analysis of the nebular spectra indicates that the [Fe ii] λ7155 and [Ni ii] λ7378 lines are redshifted, as expected for a high velocity gradient supernova. All these common intrinsic and extrinsic properties of the high velocity gradient (HVG) group are different from the low velocity gradient (LVG) normal SN Ia population and suggest significant variety in SN Ia explosions.es_ES
Publisherdc.publisherEDP Scienceses_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Sourcedc.sourceAstronomy and Astrophysicses_ES
Keywordsdc.subjectsupernovae: generales_ES
Keywordsdc.subjectsupernovae: individual: SN 2010eves_ES
Títulodc.titleSupernova 2010ev: A reddened high velocity gradient type Ia supernovaes_ES
Document typedc.typeArtículo de revistaes_ES
Indexationuchile.indexArtículo de publicación ISIes_ES

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Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile