Subarcsecond radio continuum mapping in and around the spiral galaxy NGC 3351 using MERLIN

We report subarcsecond-scale radio continuum observations of a field of 35 × 22 arcmin2 centred in NGC 3351 obtained with the Multi-Element Radio Linked Interferometer Network (MERLIN). We found 23 radio sources in this field, six of which are projected within the D25 isophote of the galaxy and thre...

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Detalles Bibliográficos
Autores principales: Hägele, Guillermo Federico, Ascasibar, Y., Richards, A. M. S., Cardaci, Mónica Viviana, Vasquez, Javier, Díaz Beltrán, Ángeles Isabel, Rosa González, D., Terlevich, Roberto, Terlevich, Elena
Formato: Articulo
Lenguaje:Inglés
Publicado: 2010
Materias:
Ciencias Astronómicas
Galaxies: individual: NGC 3351
Galaxies: starburst
Radio continuum: galaxies
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82512
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82512
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Galaxies: individual: NGC 3351
Galaxies: starburst
Radio continuum: galaxies
spellingShingle Ciencias Astronómicas
Galaxies: individual: NGC 3351
Galaxies: starburst
Radio continuum: galaxies
Hägele, Guillermo Federico
Ascasibar, Y.
Richards, A. M. S.
Cardaci, Mónica Viviana
Vasquez, Javier
Díaz Beltrán, Ángeles Isabel
Rosa González, D.
Terlevich, Roberto
Terlevich, Elena
Subarcsecond radio continuum mapping in and around the spiral galaxy NGC 3351 using MERLIN
topic_facet Ciencias Astronómicas
Galaxies: individual: NGC 3351
Galaxies: starburst
Radio continuum: galaxies
description We report subarcsecond-scale radio continuum observations of a field of 35 × 22 arcmin2 centred in NGC 3351 obtained with the Multi-Element Radio Linked Interferometer Network (MERLIN). We found 23 radio sources in this field, six of which are projected within the D25 isophote of the galaxy and three are located inside the central 100 arcsec in radius. Two of these three are significantly extended, while the third one is relatively compact. This one is the only source with a previously detected counterpart at other wavelengths and could constitute the radio counterpart of a young supernova remnant (SNR). The other two are probably related to jets from a background active galactic nucleus. We are not able to detect individual supernovae (SNe) or SNRs in the central region (r < 600 pc) of the galaxy. This could imply that the ionizing populations of the circumnuclear star-forming regions are too young (less than a few Myr) to host SNe. Also, the diffusion length of the relativistic electrons in the interstellar medium associated with the SN from previous events of star formation seems to be larger than our maximum resolution of 50 pc in radius. Detecting the thermal bremsstrahlung emission from the circumnuclear H II regions probably requires deeper observations.
format Articulo
Articulo
author Hägele, Guillermo Federico
Ascasibar, Y.
Richards, A. M. S.
Cardaci, Mónica Viviana
Vasquez, Javier
Díaz Beltrán, Ángeles Isabel
Rosa González, D.
Terlevich, Roberto
Terlevich, Elena
author_facet Hägele, Guillermo Federico
Ascasibar, Y.
Richards, A. M. S.
Cardaci, Mónica Viviana
Vasquez, Javier
Díaz Beltrán, Ángeles Isabel
Rosa González, D.
Terlevich, Roberto
Terlevich, Elena
author_sort Hägele, Guillermo Federico
title Subarcsecond radio continuum mapping in and around the spiral galaxy NGC 3351 using MERLIN
title_short Subarcsecond radio continuum mapping in and around the spiral galaxy NGC 3351 using MERLIN
title_full Subarcsecond radio continuum mapping in and around the spiral galaxy NGC 3351 using MERLIN
title_fullStr Subarcsecond radio continuum mapping in and around the spiral galaxy NGC 3351 using MERLIN
title_full_unstemmed Subarcsecond radio continuum mapping in and around the spiral galaxy NGC 3351 using MERLIN
title_sort subarcsecond radio continuum mapping in and around the spiral galaxy ngc 3351 using merlin
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/82512
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