THREE-DIMENSIONAL DISTRIBUTION of EJECTA in SUPERNOVA 1987A at 10,000 DAYS

J. Larsson, C. Fransson, J. Spyromilio, B. Leibundgut, P. Challis, R. A. Chevalier, K. France, A. Jerkstrand, R. P. Kirshner, P. Lundqvist, M. Matsuura, R. McCray, Nathan Smith, J. Sollerman, P. Garnavich, K. Heng, S. Lawrence, S. Mattila, K. Migotto, G. SonnebornF. Taddia, J. C. Wheeler

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Due to its proximity, SN 1987A offers a unique opportunity to directly observe the geometry of a stellar explosion as it unfolds. Here we present spectral and imaging observations of SN 1987A obtained ∼10,000 days after the explosion with HST/STIS and VLT/SINFONI at optical and near-infrared wavelengths. These observations allow us to produce the most detailed 3D map of Hα to date, the first 3D maps for [Ca ii], [O i], and Mg ii α α9244, as well as new maps for [Si i]+[Fe ii] and He i 2.058 μm. A comparison with previous observations shows that the [Si i]+[Fe ii] flux and morphology have not changed significantly during the past ten years, providing evidence that this line is powered by 44Ti. The time evolution of Hα shows that it is predominantly powered by X-rays from the ring, in agreement with previous findings. All lines that have sufficient signal show a similar large-scale 3D structure, with a north-south asymmetry that resembles a broken dipole. This structure correlates with early observations of asymmetries, showing that there is a global asymmetry that extends from the inner core to the outer envelope. On smaller scales, the two brightest lines, Hα and [Si i]+[Fe ii] 1.644 μm, show substructures at the level of ∼200-1000 km s-1and clear differences in their 3D geometries. We discuss these results in the context of explosion models and the properties of dust in the ejecta.

Original languageEnglish (US)
Article number147
JournalAstrophysical Journal
Volume833
Issue number2
DOIs
StatePublished - Dec 20 2016

Fingerprint

explosion
asymmetry
explosions
geometry
inner core
ejecta
near infrared
substructures
dust
wavelength
proximity
envelopes
dipoles
distribution
rings
wavelengths
x rays
comparison

Keywords

  • supernovae: general
  • supernovae: individual (SN 1987A)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Larsson, J., Fransson, C., Spyromilio, J., Leibundgut, B., Challis, P., Chevalier, R. A., ... Wheeler, J. C. (2016). THREE-DIMENSIONAL DISTRIBUTION of EJECTA in SUPERNOVA 1987A at 10,000 DAYS. Astrophysical Journal, 833(2), [147]. https://doi.org/10.3847/1538-4357/833/2/147

THREE-DIMENSIONAL DISTRIBUTION of EJECTA in SUPERNOVA 1987A at 10,000 DAYS. / Larsson, J.; Fransson, C.; Spyromilio, J.; Leibundgut, B.; Challis, P.; Chevalier, R. A.; France, K.; Jerkstrand, A.; Kirshner, R. P.; Lundqvist, P.; Matsuura, M.; McCray, R.; Smith, Nathan; Sollerman, J.; Garnavich, P.; Heng, K.; Lawrence, S.; Mattila, S.; Migotto, K.; Sonneborn, G.; Taddia, F.; Wheeler, J. C.

In: Astrophysical Journal, Vol. 833, No. 2, 147, 20.12.2016.

Research output: Contribution to journalArticle

Larsson, J, Fransson, C, Spyromilio, J, Leibundgut, B, Challis, P, Chevalier, RA, France, K, Jerkstrand, A, Kirshner, RP, Lundqvist, P, Matsuura, M, McCray, R, Smith, N, Sollerman, J, Garnavich, P, Heng, K, Lawrence, S, Mattila, S, Migotto, K, Sonneborn, G, Taddia, F & Wheeler, JC 2016, 'THREE-DIMENSIONAL DISTRIBUTION of EJECTA in SUPERNOVA 1987A at 10,000 DAYS', Astrophysical Journal, vol. 833, no. 2, 147. https://doi.org/10.3847/1538-4357/833/2/147
Larsson J, Fransson C, Spyromilio J, Leibundgut B, Challis P, Chevalier RA et al. THREE-DIMENSIONAL DISTRIBUTION of EJECTA in SUPERNOVA 1987A at 10,000 DAYS. Astrophysical Journal. 2016 Dec 20;833(2). 147. https://doi.org/10.3847/1538-4357/833/2/147
Larsson, J. ; Fransson, C. ; Spyromilio, J. ; Leibundgut, B. ; Challis, P. ; Chevalier, R. A. ; France, K. ; Jerkstrand, A. ; Kirshner, R. P. ; Lundqvist, P. ; Matsuura, M. ; McCray, R. ; Smith, Nathan ; Sollerman, J. ; Garnavich, P. ; Heng, K. ; Lawrence, S. ; Mattila, S. ; Migotto, K. ; Sonneborn, G. ; Taddia, F. ; Wheeler, J. C. / THREE-DIMENSIONAL DISTRIBUTION of EJECTA in SUPERNOVA 1987A at 10,000 DAYS. In: Astrophysical Journal. 2016 ; Vol. 833, No. 2.
@article{912dee2a50a941798281449d936be5af,
title = "THREE-DIMENSIONAL DISTRIBUTION of EJECTA in SUPERNOVA 1987A at 10,000 DAYS",
abstract = "Due to its proximity, SN 1987A offers a unique opportunity to directly observe the geometry of a stellar explosion as it unfolds. Here we present spectral and imaging observations of SN 1987A obtained ∼10,000 days after the explosion with HST/STIS and VLT/SINFONI at optical and near-infrared wavelengths. These observations allow us to produce the most detailed 3D map of Hα to date, the first 3D maps for [Ca ii], [O i], and Mg ii α α9244, as well as new maps for [Si i]+[Fe ii] and He i 2.058 μm. A comparison with previous observations shows that the [Si i]+[Fe ii] flux and morphology have not changed significantly during the past ten years, providing evidence that this line is powered by 44Ti. The time evolution of Hα shows that it is predominantly powered by X-rays from the ring, in agreement with previous findings. All lines that have sufficient signal show a similar large-scale 3D structure, with a north-south asymmetry that resembles a broken dipole. This structure correlates with early observations of asymmetries, showing that there is a global asymmetry that extends from the inner core to the outer envelope. On smaller scales, the two brightest lines, Hα and [Si i]+[Fe ii] 1.644 μm, show substructures at the level of ∼200-1000 km s-1and clear differences in their 3D geometries. We discuss these results in the context of explosion models and the properties of dust in the ejecta.",
keywords = "supernovae: general, supernovae: individual (SN 1987A)",
author = "J. Larsson and C. Fransson and J. Spyromilio and B. Leibundgut and P. Challis and Chevalier, {R. A.} and K. France and A. Jerkstrand and Kirshner, {R. P.} and P. Lundqvist and M. Matsuura and R. McCray and Nathan Smith and J. Sollerman and P. Garnavich and K. Heng and S. Lawrence and S. Mattila and K. Migotto and G. Sonneborn and F. Taddia and Wheeler, {J. C.}",
year = "2016",
month = "12",
day = "20",
doi = "10.3847/1538-4357/833/2/147",
language = "English (US)",
volume = "833",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",

}

TY - JOUR

T1 - THREE-DIMENSIONAL DISTRIBUTION of EJECTA in SUPERNOVA 1987A at 10,000 DAYS

AU - Larsson, J.

AU - Fransson, C.

AU - Spyromilio, J.

AU - Leibundgut, B.

AU - Challis, P.

AU - Chevalier, R. A.

AU - France, K.

AU - Jerkstrand, A.

AU - Kirshner, R. P.

AU - Lundqvist, P.

AU - Matsuura, M.

AU - McCray, R.

AU - Smith, Nathan

AU - Sollerman, J.

AU - Garnavich, P.

AU - Heng, K.

AU - Lawrence, S.

AU - Mattila, S.

AU - Migotto, K.

AU - Sonneborn, G.

AU - Taddia, F.

AU - Wheeler, J. C.

PY - 2016/12/20

Y1 - 2016/12/20

N2 - Due to its proximity, SN 1987A offers a unique opportunity to directly observe the geometry of a stellar explosion as it unfolds. Here we present spectral and imaging observations of SN 1987A obtained ∼10,000 days after the explosion with HST/STIS and VLT/SINFONI at optical and near-infrared wavelengths. These observations allow us to produce the most detailed 3D map of Hα to date, the first 3D maps for [Ca ii], [O i], and Mg ii α α9244, as well as new maps for [Si i]+[Fe ii] and He i 2.058 μm. A comparison with previous observations shows that the [Si i]+[Fe ii] flux and morphology have not changed significantly during the past ten years, providing evidence that this line is powered by 44Ti. The time evolution of Hα shows that it is predominantly powered by X-rays from the ring, in agreement with previous findings. All lines that have sufficient signal show a similar large-scale 3D structure, with a north-south asymmetry that resembles a broken dipole. This structure correlates with early observations of asymmetries, showing that there is a global asymmetry that extends from the inner core to the outer envelope. On smaller scales, the two brightest lines, Hα and [Si i]+[Fe ii] 1.644 μm, show substructures at the level of ∼200-1000 km s-1and clear differences in their 3D geometries. We discuss these results in the context of explosion models and the properties of dust in the ejecta.

AB - Due to its proximity, SN 1987A offers a unique opportunity to directly observe the geometry of a stellar explosion as it unfolds. Here we present spectral and imaging observations of SN 1987A obtained ∼10,000 days after the explosion with HST/STIS and VLT/SINFONI at optical and near-infrared wavelengths. These observations allow us to produce the most detailed 3D map of Hα to date, the first 3D maps for [Ca ii], [O i], and Mg ii α α9244, as well as new maps for [Si i]+[Fe ii] and He i 2.058 μm. A comparison with previous observations shows that the [Si i]+[Fe ii] flux and morphology have not changed significantly during the past ten years, providing evidence that this line is powered by 44Ti. The time evolution of Hα shows that it is predominantly powered by X-rays from the ring, in agreement with previous findings. All lines that have sufficient signal show a similar large-scale 3D structure, with a north-south asymmetry that resembles a broken dipole. This structure correlates with early observations of asymmetries, showing that there is a global asymmetry that extends from the inner core to the outer envelope. On smaller scales, the two brightest lines, Hα and [Si i]+[Fe ii] 1.644 μm, show substructures at the level of ∼200-1000 km s-1and clear differences in their 3D geometries. We discuss these results in the context of explosion models and the properties of dust in the ejecta.

KW - supernovae: general

KW - supernovae: individual (SN 1987A)

UR - http://www.scopus.com/inward/record.url?scp=85007543316&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85007543316&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/833/2/147

DO - 10.3847/1538-4357/833/2/147

M3 - Article

AN - SCOPUS:85007543316

VL - 833

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 147

ER -