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dc.contributor.author
Reynoso, Estela Marta
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dc.contributor.author
Mangum, Jeffrey G.
dc.date.available
2023-11-08T12:59:01Z
dc.date.issued
2000-12
dc.identifier.citation
Reynoso, Estela Marta; Mangum, Jeffrey G.; CO observations toward supernova remnants with associated OH 1720 MHz masers; IOP Publishing; Astrophysical Journal; 545; 2 PART 1; 12-2000; 874-884
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/217422
dc.description.abstract
The environs of three supernova remnants (SNRs) with associated OH 1720 MHz masers, G349.7 + 0.2, CTB 37A, and G16.7 + 0.1, have been surveyed in the CO J = 1-0 transition with the 12 Meter Telescope of the NRAO, using the on-the-fly technique. These observations have revealed a number of molecular clouds interacting with the SNR shock fronts. Most of the OH 1720 MHz masers have been found to lie over CO concentrations, and the maser velocities are coincident with the CO peak velocities to an accuracy better than 2 km s-1. The present data trace the interstellar medium (ISM) structures interacting with the SNRs; however, to probe the shocked molecular gas in which the OH 1720 MHz emission originates, higher excitation transitions and more complex species should be observed. In CTB 37A, where the shock velocity into the molecular cloud could be determined, it has been found to be of C-type, in agreement with theoretical predictions. Part of the rim of G16.7 + 0.1 appears to be flattened by a dense external cloud, yet the only associated OH 1720 MHz maser lies near the opposite region of the remnant. This behavior, also observed in IC 443 and 3C 391, seems to contradict the suggestion that OH 1720 MHz maser emission occurs mainly for transverse shocks.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ISM: CLOUDS
dc.subject
ISM: MOLECULES
dc.subject
MASERS
dc.subject
SUPERNOVA REMNANTS
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
CO observations toward supernova remnants with associated OH 1720 MHz masers
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-12-18T13:53:14Z
dc.journal.volume
545
dc.journal.number
2 PART 1
dc.journal.pagination
874-884
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Reynoso, Estela Marta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Mangum, Jeffrey G.. University of Arizona; Estados Unidos
dc.journal.title
Astrophysical Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1086/317854
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1086/317854
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