6533b828fe1ef96bd1288538
RESEARCH PRODUCT
Carbon Monoxide in the Cold Debris of Supernova 1987A
Maarten BaesAlicia M. SoderbergR. HopwoodPierre RoyerLoretta DunneMikako MatsuuraClaes FranssonJ. M. MarcaideM. J. BarlowG. SonnebornMartin GroenewegenAlberto D. BolattoG. C. Van De SteeneIvan Marti-vidalJason GlennRobert P. KirshnerRemy IndebetouwRemy IndebetouwLister Staveley-smithRichard MccrayGiovanna ZanardoMasa LakicevicJ. A. YatesJ. Th. Van LoonBruce SwinyardP. A. M. Van HoofJulia KamenetzkyJoris BlommaertJoris BlommaertMargaret MeixnerLeen DecinHaley Louise Gomezsubject
FOS: Physical sciencesAstrophysicsWAVELENGTHindividual (SN1987A) [supernovae]FACILITYEjectaSupernova remnantSolar and Stellar Astrophysics (astro-ph.SR)3-DIMENSIONAL STRUCTURELine (formation)PhysicsSolar massSN-1987AINSTRUMENTsupernova remnants [ISM]Astronomy and AstrophysicsAtacama Large Millimeter ArrayDebrisSupernovaSpireEJECTACASSIOPEIAPhysics and AstronomyAstrophysics - Solar and Stellar Astrophysics13. Climate actionSpace and Planetary ScienceREMNANTSN 1987Adescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-01 |