Skip navigation
Skip navigation

ESC observations of SN 2005cf. II. Optical spectroscopy and the high-velocity features

Garavini, Gabriele; Nobili, Serena; Taubenberger, Stefano; Pastorello, Andrea; Elias-Rosa (Elias de la Rosa), Nancy; Stanishev, Vallery; Blanc, G; Benetti, Stefano; Goobar, Ariel; Mazzali, Paolo A; Sanchez, S F; Salvo, Maria; Schmidt, Brian; Hillebrandt, Wolfgang

Description

The ESC-RTN optical spectroscopy data set for SN 2005cf is presented and analyzed. The observations range from -11.6 and +77.3 days with respect to B-band maximum light. The evolution of the spectral energy distribution of SN 2005cf is characterized by the presence of high velocity Si II and Ca II features. SYNOW synthetic spectra are used to investigate the ejecta geometry of silicon. Based on the synthetic spectra, the Si II high-velocity feature appears detached at 19500 km s-1. We also...[Show more]

dc.contributor.authorGaravini, Gabriele
dc.contributor.authorNobili, Serena
dc.contributor.authorTaubenberger, Stefano
dc.contributor.authorPastorello, Andrea
dc.contributor.authorElias-Rosa (Elias de la Rosa), Nancy
dc.contributor.authorStanishev, Vallery
dc.contributor.authorBlanc, G
dc.contributor.authorBenetti, Stefano
dc.contributor.authorGoobar, Ariel
dc.contributor.authorMazzali, Paolo A
dc.contributor.authorSanchez, S F
dc.contributor.authorSalvo, Maria
dc.contributor.authorSchmidt, Brian
dc.contributor.authorHillebrandt, Wolfgang
dc.date.accessioned2015-12-07T22:46:23Z
dc.identifier.issn0004-6361
dc.identifier.urihttp://hdl.handle.net/1885/25755
dc.description.abstractThe ESC-RTN optical spectroscopy data set for SN 2005cf is presented and analyzed. The observations range from -11.6 and +77.3 days with respect to B-band maximum light. The evolution of the spectral energy distribution of SN 2005cf is characterized by the presence of high velocity Si II and Ca II features. SYNOW synthetic spectra are used to investigate the ejecta geometry of silicon. Based on the synthetic spectra, the Si II high-velocity feature appears detached at 19500 km s-1. We also securely establish the presence of such a feature in SN 1990N, SN 1994D, SN 2002er, and SN 2003du. In a morphological study both the Ca II IR triplet and H&K absorption lines of SN 2005cf show high-velocity features centered around 24000 km s-1. When compared with other type Ia SNe based on the scheme presented in Benetti et al. (2005, ApJ, 623, 1011), SN 2005cf definitely belongs to the LVG group.
dc.description.sponsorshipThis work has been partially supported by the European Union’s Human Potential Program “The Physics of type Ia Supernovae”, under contract HPRN-CT-2002-00303. G.G, A.G. and V.S. would also like to thank the Göran Gustafsson Foundation for financial support.
dc.format12 pages
dc.publisherSpringer
dc.rights© ESO 2007.
dc.sourceAstronomy and Astrophysics
dc.subjectKeywords: Computational geometry; Light absorption; Silicon compounds; Stars; Ultraviolet visible spectroscopy; Velocity measurement; Ejecta geometry; High velocity features; Supernovae; SYNOW synthetic spectra; Emission spectroscopy Stars: supernovae: general; Stars: supernovae: individual: SN 2005cf
dc.titleESC observations of SN 2005cf. II. Optical spectroscopy and the high-velocity features
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume471
dc.date.issued2007
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationu4362859xPUB40
local.type.statusPublished Version
local.contributor.affiliationGaravini, Gabriele, Stockholm University
local.contributor.affiliationNobili, Serena, Stockholm University
local.contributor.affiliationTaubenberger, Stefano, Max Planck Institute for Astrophysics
local.contributor.affiliationPastorello, Andrea, Max Planck Institute for Astrophysics
local.contributor.affiliationElias-Rosa (Elias de la Rosa), Nancy, INAF-Osservatorio Astro di Padova (& Univ de La Laguna & Max Planck))
local.contributor.affiliationStanishev, Vallery, Stockholm University
local.contributor.affiliationBlanc, G, INAF-Osservatorio Astronomico di Padova
local.contributor.affiliationBenetti, Stefano, INAF-Osservatorio Astronomico di Padova
local.contributor.affiliationGoobar, Ariel, Stockholm University
local.contributor.affiliationMazzali, Paolo A, INAF-Osservatorio Astronomico di Trieste
local.contributor.affiliationSanchez, S F, Calar Alto Observatory
local.contributor.affiliationSalvo, Maria, College of Physical and Mathematical Sciences, The Australian National University
local.contributor.affiliationSchmidt, Brian, College of Physical and Mathematical Sciences, The Australian National University
local.contributor.affiliationHillebrandt, Wolfgang, Max Planck Institute for Astrophysics
local.identifier.essn1432-0746
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage527
local.bibliographicCitation.lastpage535
local.identifier.doi10.1051/0004-6361:20066971
dc.date.updated2015-12-07T11:40:57Z
local.identifier.scopusID2-s2.0-34548025864
dcterms.accessRightsOpen Access
dc.provenancehttp://www.sherpa.ac.uk/romeo/issn/0004-6361/ Author can archive publisher's version/PDF (Sherpa/Romeo as of 24/9/2018).
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Garavini_ESC_observations_of_SN_2005cf._2007.pdf1.09 MBAdobe PDF


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator