Persistent C II absorption in the normal type Ia supernova 2002fk

Vista sencilla de ítem
dc.contributor.authorCartier, Régis
dc.contributor.authorHamuy, Mario
dc.contributor.authorPignata, Giuliano
dc.contributor.authorFörster, Francisco
dc.contributor.authorFörster, Francisco
dc.contributor.authorFolatelli, Gaston
dc.contributor.authorPhillips, Mark M.
dc.contributor.authorMorrell, Nidia
dc.contributor.authorKrisciunas, Kevin
dc.contributor.authorSuntzeff, Nicholas B.
dc.contributor.authorClocchiatti, Alejandro
dc.contributor.authorCoppi, Paolo
dc.contributor.authorContreras, Carlos
dc.contributor.authorRoth, Miguel
dc.contributor.authorKoviak, Kathleen
dc.contributor.authorKoviak, Kathleen
dc.contributor.authorGonzález, Luis
dc.contributor.authorGonzález, Sergio
dc.contributor.authorHuerta, Leonor
dc.date.accessioned2023-06-08T16:31:06Z
dc.date.available2023-06-08T16:31:06Z
dc.date.issued2014-07
dc.descriptionIndexación: Scopus.es
dc.description.abstractWe present well-sampled UBVRIJHK photometry of SN 2002fk starting 12 days before maximum light through 122 days after peak brightness, along with a series of 15 optical spectra from −4 to +95 days since maximum. Our observations show the presence of C ii lines in the early-time spectra of SN 2002fk, expanding at 11,000 km s−1 and persisting until 8 days past maximum light with a velocity of ∼9000 km s−1. SN 2002fk is characterized by a small velocity gradient of v˙Si ii = 26 km s−1 day−1, possibly caused by an off-center explosion with the ignition region oriented toward the observer. The connection between the viewing angle of an off-center explosion and the presence of C ii in the early-time spectrum suggests that the observation of Cii could be also due to a viewing angle effect. Adopting the Cepheid distance to NGC 1309 we provide the first H0 value based on near infrared (near-IR) measurements of a Type Ia supernova (SN) between 63.0 ± 0.8 (±3.4 systematic) and 66.7 ± 1.0 (±3.5 systematic) km s−1 Mpc−1, depending on the absolute magnitude/decline rate relationship adopted. It appears that the near-IR yields somewhat lower (6%–9%) H0 values than the optical. It is essential to further examine this issue by (1) expanding the sample of high-quality near-IR light curves of SNe in the Hubble flow, and (2) increasing the number of nearby SNe with near-IR SN light curves and precise Cepheid distances, which affords the promise to deliver a more precise determination of H0.es
dc.description.urihttps://iopscience-iop-org.recursosbiblioteca.unab.cl/article/10.1088/0004-637X/789/1/89
dc.identifier.citationAstrophysical Journal. Volume 789, Issue 1. 1 July 2014 Article number 89es
dc.identifier.doiDOI: 10.1088/0004-637X/789/1/89
dc.identifier.issn0004-637X
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/50487
dc.language.isoenes
dc.publisherInstitute of Physics Publishinges
dc.rights.licenseAtribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectCosmological Parameterses
dc.subjectCosmology: Observationses
dc.subjectSupernovae: Generales
dc.subjectsupernovae:Individual (SN 2002fk)es
dc.subjectOnline-only material: Color Figureses
dc.titlePersistent C II absorption in the normal type Ia supernova 2002fkes
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
Cartier_Persistent_C II_absorption_in_the_normal_type_Ia_supernova_2002fk.pdf
Tamaño:
2.11 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLÉS
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista