The fading of supernova 1997D

S. Benetti; M. Turatto; S. Balberg; L. Zampieri; S. L. Shapiro; E. Cappellaro; K. Nomoto; T. Nakamura; P. A. Mazzali; F. Patat

doi:10.1046/j.1365-8711.2001.04122.x

The fading of supernova 1997D

S. Benetti^*, M. Turatto, S. Balberg, L. Zampieri, S. L. Shapiro, E. Cappellaro, K. Nomoto, T. Nakamura, P. A. Mazzali, F. Patat

^*Corresponding author for this work

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

68 Scopus citations

Abstract

We present a new set of spectroscopic and photometric data extending the observations of SN 1997D to over 400d after the explosion. These observations confirm the peculiar properties of SN 1997D, such as the very low abundance of ⁵⁶Co (0.002M⊙) and the low expansion velocity of the ejecta (∼1000 km s^-1). We discuss the implications of these observations for the character of the progenitor and the nature of the remnant, showing that a Crab-like pulsar or an accreting neutron star formed in the explosion of a low-mass progenitor should already have produced a detectable luminosity at this epoch, in contrast with photometric data. On the other hand, the explosion of a high-mass progenitor with the formation of a black hole is consistent with the available observations. The consequences of this conclusion regarding the nature of the explosion and the prospects of directly identifying the black hole are also addressed.

Original language	English
Pages (from-to)	361-368
Number of pages	8
Journal	Monthly Notices of the Royal Astronomical Society
Volume	322
Issue number	2
DOIs	https://doi.org/10.1046/j.1365-8711.2001.04122.x
State	Published - 1 Apr 2001
Externally published	Yes

Keywords

Supernovae: general
Supernovae: individual: SN 1997D

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10.1046/j.1365-8711.2001.04122.x

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title = "The fading of supernova 1997D",

abstract = "We present a new set of spectroscopic and photometric data extending the observations of SN 1997D to over 400d after the explosion. These observations confirm the peculiar properties of SN 1997D, such as the very low abundance of 56Co (0.002M⊙) and the low expansion velocity of the ejecta (∼1000 km s-1). We discuss the implications of these observations for the character of the progenitor and the nature of the remnant, showing that a Crab-like pulsar or an accreting neutron star formed in the explosion of a low-mass progenitor should already have produced a detectable luminosity at this epoch, in contrast with photometric data. On the other hand, the explosion of a high-mass progenitor with the formation of a black hole is consistent with the available observations. The consequences of this conclusion regarding the nature of the explosion and the prospects of directly identifying the black hole are also addressed.",

keywords = "Supernovae: general, Supernovae: individual: SN 1997D",

author = "S. Benetti and M. Turatto and S. Balberg and L. Zampieri and Shapiro, {S. L.} and E. Cappellaro and K. Nomoto and T. Nakamura and Mazzali, {P. A.} and F. Patat",

year = "2001",

month = apr,

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doi = "10.1046/j.1365-8711.2001.04122.x",

language = "אנגלית",

volume = "322",

pages = "361--368",

journal = "Monthly Notices of the Royal Astronomical Society",

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publisher = "Oxford University Press",

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T1 - The fading of supernova 1997D

AU - Benetti, S.

AU - Turatto, M.

AU - Balberg, S.

AU - Zampieri, L.

AU - Shapiro, S. L.

AU - Cappellaro, E.

AU - Nomoto, K.

AU - Nakamura, T.

AU - Mazzali, P. A.

AU - Patat, F.

PY - 2001/4/1

Y1 - 2001/4/1

N2 - We present a new set of spectroscopic and photometric data extending the observations of SN 1997D to over 400d after the explosion. These observations confirm the peculiar properties of SN 1997D, such as the very low abundance of 56Co (0.002M⊙) and the low expansion velocity of the ejecta (∼1000 km s-1). We discuss the implications of these observations for the character of the progenitor and the nature of the remnant, showing that a Crab-like pulsar or an accreting neutron star formed in the explosion of a low-mass progenitor should already have produced a detectable luminosity at this epoch, in contrast with photometric data. On the other hand, the explosion of a high-mass progenitor with the formation of a black hole is consistent with the available observations. The consequences of this conclusion regarding the nature of the explosion and the prospects of directly identifying the black hole are also addressed.

AB - We present a new set of spectroscopic and photometric data extending the observations of SN 1997D to over 400d after the explosion. These observations confirm the peculiar properties of SN 1997D, such as the very low abundance of 56Co (0.002M⊙) and the low expansion velocity of the ejecta (∼1000 km s-1). We discuss the implications of these observations for the character of the progenitor and the nature of the remnant, showing that a Crab-like pulsar or an accreting neutron star formed in the explosion of a low-mass progenitor should already have produced a detectable luminosity at this epoch, in contrast with photometric data. On the other hand, the explosion of a high-mass progenitor with the formation of a black hole is consistent with the available observations. The consequences of this conclusion regarding the nature of the explosion and the prospects of directly identifying the black hole are also addressed.

KW - Supernovae: general

KW - Supernovae: individual: SN 1997D

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JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

The fading of supernova 1997D

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Keywords

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