The asymmetric explosion of type Ia supernovae as seen from near-infrared observations'

Kentaro Motohara; Keiichi Maeda; Christopher L. Gerardy; Ken'ichi Nomoto; Masaomi Tanaka; Nozomu Tominaga; Takuya Ohkubo; Paolo A. Mazzali; Robert A. Fesen; Peter Höflich; J. Craig Wheeler

doi:10.1086/509919

The asymmetric explosion of type Ia supernovae as seen from near-infrared observations'

Kentaro Motohara, Keiichi Maeda, Christopher L. Gerardy, Ken'ichi Nomoto, Masaomi Tanaka, Nozomu Tominaga, Takuya Ohkubo, Paolo A. Mazzali, Robert A. Fesen, Peter Höflich, J. Craig Wheeler

SCI - Astronomy

Research output: Contribution to journal › Article › peer-review

59 Citations (Scopus)

Abstract

We present near-infrared spectra of late-phase (>200 days) Type Ia supernovae (SNe Ia) taken at the Subaru Telescope. The [Fe II] line of SN 2003hv shows a clear flat-topped feature, while that of SN 2005W shows a less prominent flatness. In addition, a large shift in their line center, varying from -3000 to 1000 km s^-1 with respect to the host galaxies, is seen. Such a shift suggests the occurrence of an off-center, nonspherical explosion in the central region and provides important, new constraints on the explosion models of SNe la.

Original language	English
Pages (from-to)	L101-L104
Journal	Astrophysical Journal
Volume	652
Issue number	2 II
DOIs	https://doi.org/10.1086/509919
Publication status	Published - 2006 Dec 1

Keywords

Infrared: stars
Supernovae: general
Supernovae: individual (SN 2003du, SN 2003hv, SN 2005W)

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10.1086/509919

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title = "The asymmetric explosion of type Ia supernovae as seen from near-infrared observations'",

abstract = "We present near-infrared spectra of late-phase (>200 days) Type Ia supernovae (SNe Ia) taken at the Subaru Telescope. The [Fe II] line of SN 2003hv shows a clear flat-topped feature, while that of SN 2005W shows a less prominent flatness. In addition, a large shift in their line center, varying from -3000 to 1000 km s-1 with respect to the host galaxies, is seen. Such a shift suggests the occurrence of an off-center, nonspherical explosion in the central region and provides important, new constraints on the explosion models of SNe la.",

keywords = "Infrared: stars, Supernovae: general, Supernovae: individual (SN 2003du, SN 2003hv, SN 2005W)",

author = "Kentaro Motohara and Keiichi Maeda and Gerardy, {Christopher L.} and Ken'ichi Nomoto and Masaomi Tanaka and Nozomu Tominaga and Takuya Ohkubo and Mazzali, {Paolo A.} and Fesen, {Robert A.} and Peter H{\"o}flich and Wheeler, {J. Craig}",

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doi = "10.1086/509919",

language = "English",

volume = "652",

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journal = "Astrophysical Journal",

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TY - JOUR

T1 - The asymmetric explosion of type Ia supernovae as seen from near-infrared observations'

AU - Motohara, Kentaro

AU - Maeda, Keiichi

AU - Gerardy, Christopher L.

AU - Nomoto, Ken'ichi

AU - Tanaka, Masaomi

AU - Tominaga, Nozomu

AU - Ohkubo, Takuya

AU - Mazzali, Paolo A.

AU - Fesen, Robert A.

AU - Höflich, Peter

AU - Wheeler, J. Craig

PY - 2006/12/1

Y1 - 2006/12/1

N2 - We present near-infrared spectra of late-phase (>200 days) Type Ia supernovae (SNe Ia) taken at the Subaru Telescope. The [Fe II] line of SN 2003hv shows a clear flat-topped feature, while that of SN 2005W shows a less prominent flatness. In addition, a large shift in their line center, varying from -3000 to 1000 km s-1 with respect to the host galaxies, is seen. Such a shift suggests the occurrence of an off-center, nonspherical explosion in the central region and provides important, new constraints on the explosion models of SNe la.

AB - We present near-infrared spectra of late-phase (>200 days) Type Ia supernovae (SNe Ia) taken at the Subaru Telescope. The [Fe II] line of SN 2003hv shows a clear flat-topped feature, while that of SN 2005W shows a less prominent flatness. In addition, a large shift in their line center, varying from -3000 to 1000 km s-1 with respect to the host galaxies, is seen. Such a shift suggests the occurrence of an off-center, nonspherical explosion in the central region and provides important, new constraints on the explosion models of SNe la.

KW - Infrared: stars

KW - Supernovae: general

KW - Supernovae: individual (SN 2003du, SN 2003hv, SN 2005W)

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U2 - 10.1086/509919

DO - 10.1086/509919

M3 - Article

AN - SCOPUS:33845890339

SN - 0004-637X

VL - 652

SP - L101-L104

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 II

ER -

The asymmetric explosion of type Ia supernovae as seen from near-infrared observations'

Abstract

Keywords

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