2017ApJ...842L..24A


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.25CET23:25:58

2017ApJ...842L..24A - Astrophys. J., 842, L24-L24 (2017/June-3)

Very deep inside the SN 1987A core ejecta: molecular structures seen in 3D.

ABELLAN F.J., INDEBETOUW R., MARCAIDE J.M., GABLER M., FRANSSON C., SPYROMILIO J., BURROWS D.N., CHEVALIER R., CIGAN P., GAENSLER B.M., GOMEZ H.L., JANKA H.-Th., KIRSHNER R., LARSSON J., LUNDQVIST P., MATSUURA M., McCRAY R., NG C.-Y., PARK S., ROCHE P., STAVELEY-SMITH L., VAN LOON J.T., WHEELER J.C. and WOOSLEY S.E.

Abstract (from CDS):

Most massive stars end their lives in core-collapse supernova explosions and enrich the interstellar medium with explosively nucleosynthesized elements. Following core collapse, the explosion is subject to instabilities as the shock propagates outward through the progenitor star. Observations of the composition and structure of the innermost regions of a core-collapse supernova provide a direct probe of the instabilities and nucleosynthetic products. SN 1987A in the Large Magellanic Cloud is one of very few supernovae for which the inner ejecta can be spatially resolved but are not yet strongly affected by interaction with the surroundings. Our observations of SN 1987A with the Atacama Large Millimeter/submillimeter Array are of the highest resolution to date and reveal the detailed morphology of cold molecular gas in the innermost regions of the remnant. The 3D distributions of carbon and silicon monoxide (CO and SiO) emission differ, but both have a central deficit, or torus-like distribution, possibly a result of radioactive heating during the first weeks ("nickel heating"). The size scales of the clumpy distribution are compared quantitatively to models, demonstrating how progenitor and explosion physics can be constrained.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): hydrodynamics - ISM: supernova remnants - instabilities - supernovae: individual: SN 1987A - supernovae: individual: SN 1987A

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 QSO B0332-403 BLL 03 34 13.6547438706 -40 08 25.401996186 18.54 18.35 17.87 17.5   ~ 258 1
2 NAME Pictor A Sy1 05 19 49.7230919028 -45 46 43.855209977   15.73 15.77 14.85   ~ 544 1
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14549 1
4 SN 1987A SN* 05 35 28.020 -69 16 11.07   4.75 4.81     SN.IIPec 4418 2
5 3FGL J0601.2-7036 QSO 06 01 11.2517801292 -70 36 08.805554929       18.244   ~ 62 1
6 QSO J0635-7516 QSO 06 35 46.5080299 -75 16 16.815501   15.96 15.75 15.82   ~ 504 1

    Equat.    Gal    SGal    Ecl

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2020.02.25-23:25:58

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