DUST PRODUCTION AND PARTICLE ACCELERATION IN SUPERNOVA 1987A REVEALED WITH ALMA

被引：169

作者：

Indebetouw, R. ^{[1
,2
]}

Matsuura, M. ^{[3
]}

Dwek, E. ^{[4
]}

Zanardo, G. ^{[5
]}

Barlow, M. J. ^{[3
]}

Baes, M. ^{[6
]}

Bouchet, P. ^{[7
]}

Burrows, D. N. ^{[8
]}

Chevalier, R. ^{[1
]}

Clayton, G. C. ^{[9
]}

Fransson, C. ^{[10
,11
]}

Gaensler, B. ^{[12
]}

Kirshner, R. ^{[13
]}

Lakicevic, M. ^{[14
]}

Long, K. S. ^{[15
]}

Lundqvist, P. ^{[10
,11
]}

Marti-Vidal, I. ^{[16
]}

Marcaide, J. ^{[17
]}

McCray, R. ^{[18
]}

Meixner, M. ^{[15
,19
]}

Ng, C. -Y. ^{[20
]}

Park, S. ^{[21
]}

Sonneborn, G. ^{[15
]}

Staveley-Smith, L. ^{[5
]}

Vlahakis, C. ^{[22
]}

van Loon, J. ^{[14
]}

机构：

[1] Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA

[2] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[3] UCL, Dept Phys & Astron, London WC1E 6BT, England

[4] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[5] Univ Western Australia, ICRAR, Crawley, WA 6009, Australia

[6] Univ Ghent, Sterrenkundig Observat, B-9000 Ghent, Belgium

[7] CEA Saclay, F-91191 Gif Sur Yvette, France

[8] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[9] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[10] Stockholm Univ, Dept Astron, SE-10691 Stockholm, Sweden

[11] Stockholm Univ, Oskar Klein Ctr, SE-10691 Stockholm, Sweden

[12] Univ Sydney, Sch Phys, Sydney Inst Astron, Sydney, NSW 2006, Australia

[13] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[14] Keele Univ, Lennard Jones Labs, Keele ST5 5BG, Staffs, England

[15] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[16] Chalmers Univ, Dept Earth & Space Sci, Onsala Space Observ, SE-43992 Onsala, Sweden

[17] Univ Valencia, E-46100 Burjassot, Spain

[18] Univ Colorado, Dept Astrophys & Planetary Sci, Boulder, CO 80309 USA

[19] Johns Hopkins Univ, Dept Phys & Astron, Bloomberg Ctr 366, Baltimore, MD 21218 USA

[20] Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[21] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[22] European So Observ, Joint ALMA Observ, Santiago 19, Chile

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2014年 / 782卷 / 01期

基金：

美国国家科学基金会;

关键词：

galaxies: ISM; ISM: supernova remnants; Magellanic Clouds; supernovae: individual (1987A); HUBBLE-SPACE-TELESCOPE; SN; 1987A; EARLY UNIVERSE; OPTICAL-PROPERTIES; MASSIVE STARS; REVERSE SHOCK; EVOLUTION; REMNANT; EJECTA; EMISSION;

D O I：

10.1088/2041-8205/782/1/L2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Supernova (SN) explosions are crucial engines driving the evolution of galaxies by shock heating gas, increasing the metallicity, creating dust, and accelerating energetic particles. In 2012 we used the Atacama Large Millimeter/Submillimeter Array to observe SN 1987A, one of the best-observed supernovae since the invention of the telescope. We present spatially resolved images at 450 mu m, 870 mu m, 1.4 mm, and 2.8 mm, an important transition wavelength range. Longer wavelength emission is dominated by synchrotron radiation from shock-accelerated particles, shorter wavelengths by emission from the largest mass of dust measured in a supernova remnant (>0.2 M-circle dot). For the first time we show unambiguously that this dust has formed in the inner ejecta (the cold remnants of the exploded star's core). The dust emission is concentrated at the center of the remnant, so the dust has not yet been affected by the shocks. If a significant fraction survives, and if SN 1987A is typical, supernovae are important cosmological dust producers.

引用

页数：6

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