Issue |
A&A
Volume 556, August 2013
|
|
---|---|---|
Article Number | A131 | |
Number of page(s) | 8 | |
Section | Stellar structure and evolution | |
DOI | https://doi.org/10.1051/0004-6361/201220791 | |
Published online | 08 August 2013 |
The star forming region Monoceros R2 as a gamma-ray source
1
Escuela Politécnica Superior de Jaén, Universidad de Jaén,
Campus Las Lagunillas, Edif. A3,
23071
Jaén,
Spain
e-mail: jmarti@ujaen.es; peter@ujaen.es;
ajmunoz@ujaen.es; esayaso@ujaen.es;
jrssutil@ujaen.es
2
Departament d’Astronomia i Meteorologia, Institut de Ciències del
Cosmos (ICC), Universitat de Barcelona (IEEC-UB), Martí i Franquès 1, 08028
Barcelona,
Spain
e-mail: pmunar@am.ub.es, jmparedes@ub.edu
3
Instituto Argentino de Radioastronomía (IAR),
CCT La Plata (CONICET), C.C.5,
(1894) Villa Elisa, Buenos
Aires, Argentina
e-mail: romero@iar.unlp.edu.ar; jcombi@iar.unlp.edu.ar
4
Facultad de Ciencias Astronómicas y Geofísicas, Universidad
Nacional de La Plata, Paseo del
Bosque s/n, 1900
La Plata,
Argentina
Received:
26
November
2012
Accepted:
12
June
2013
Context. After the release of the gamma-ray source catalog produced by the Fermi satellite during its first two years of operation, a significant fraction of sources still remain unassociated at lower energies. In addition to well-known high-energy emitters (pulsars, blazars, supernova remnants, etc.), theoretical expectations predict new classes of gamma-ray sources. In particular, gamma-ray emission could be associated with some of the early phases of stellar evolution, but this interesting possibility is still poorly understood.
Aims. The aim of this paper is to assess the possibility of the Fermi gamma-ray source 2FGL J0607.5−0618c being associated with the massive star forming region Monoceros R2.
Methods. A multi-wavelength analysis of the Monoceros R2 region is carried out using archival data at radio, infrared, X-ray, and gamma-ray wavelengths. The resulting observational properties are used to estimate the physical parameters needed to test the different physical scenarios.
Results. We confirm the 2FGL J0607.5−0618c detection with improved confidence over the Fermi two-year catalog. We find that a combined effect of the multiple young stellar objects in Monoceros R2 is a viable picture for the nature of the source.
Key words: stars: protostars / stars: massive / stars: flare / radio continuum: stars / X-rays: stars / gamma rays: stars
© ESO, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.