Carbon Monoxide in the Cold Debris of Supernova 1987A
| Autor: | Maarten Baes, Alicia M. Soderberg, R. Hopwood, Pierre Royer, Loretta Dunne, Mikako Matsuura, Claes Fransson, J. M. Marcaide, M. J. Barlow, G. Sonneborn, Martin Groenewegen, Alberto D. Bolatto, G. C. Van de Steene, Ivan Marti-Vidal, Jason Glenn, Robert P. Kirshner, Remy Indebetouw, Lister Staveley-Smith, Richard McCray, Giovanna Zanardo, Masa Lakicevic, J. A. Yates, J. Th. van Loon, Bruce Swinyard, P. A. M. van Hoof, Julia Kamenetzky, Joris Blommaert, Margaret Meixner, Leen Decin, Haley Louise Gomez |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
FOS: Physical sciences
Astrophysics WAVELENGTH individual (SN1987A) [supernovae] FACILITY Ejecta Supernova remnant Solar and Stellar Astrophysics (astro-ph.SR) 3-DIMENSIONAL STRUCTURE Line (formation) Physics Solar mass SN-1987A INSTRUMENT supernova remnants [ISM] Astronomy and Astrophysics Atacama Large Millimeter Array Debris Supernova Spire EJECTA CASSIOPEIA Physics and Astronomy Astrophysics - Solar and Stellar Astrophysics 13. Climate action Space and Planetary Science REMNANT SN 1987A |
| Zdroj: | ASTROPHYSICAL JOURNAL LETTERS |
| ISSN: | 2041-8205 |
| Popis: | We report spectroscopic and imaging observations of rotational transitions of cold CO and SiO in the ejecta of SN1987A, the first such emission detected in a supernova remnant. In addition to line luminosities for the CO J=1-0, 2-1, 6-5, and 7-6 transitions, we present upper limits for all other transitions up to J=13-12, collectively measured from the Atacama Large Millimeter Array (ALMA), the Atacama Pathfinder EXperiment (APEX), and the Herschel Spectral and Photometric Imaging REceiver (SPIRE). Simple models show the lines are emitted from at least 0.01 solar masses of CO at a temperature > 14 K, confined within at most 35% of a spherical volume expanding at ~ 2000 km/s. Moreover, we locate the emission within 1'' of the central debris. These observations, along with a partial observation of SiO, confirm the presence of cold molecular gas within supernova remnants and provide insight into the physical conditions and chemical processes in the ejecta. Furthermore, we demonstrate the powerful new window into supernova ejecta offered by submillimeter observations. Accepted to the Astrophysical Journal Letters, 6 pages, 3 figures |
| Databáze: | OpenAIRE |
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