Infrared counterparts of x-ray sources in the galactic center region / Identificação de contrapartidas infravermelhas de fontes de raios-x na região do centro galáctico

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The Chandra X-ray telescope has carried out a survey in the Galactic Center region resulting in a catalog of 2357 point sources in a 17 × 17 field-of-view. The positional uncertainty of the sources is <= 4 arcsec. This allowed us to identify counterparts in other wavelengths. In the optical region, due to the large extinction by the interstellar medium (tens of magnitudes in the V band), the number of counterparts is small. In the infrared, however, the extinction is relatively small. In this work we use CamIV data obtained at OPD/LNA, as well as 2MASS information to identify infrared counterparts to the Chandra X-ray sources. Moreover, using CamIV images obtained at dierent epochs, we investigate the variability in the H band flux for the most likely identifications. We also analyse the resultant catalogue of identifications to select targets for follow-up studies with the SOAR and GEMINI telescopes.

ASSUNTO(S)

astrofÍsica infravermelho astrophysics x-rays raios-x contrapartidas galactic center infrared variable stars centro galáctico estrelas variáveis counterparts

ACESSO AO ARTIGO

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