ICATE   21876
INSTITUTO DE CIENCIAS ASTRONOMICAS, DE LA TIERRA Y DEL ESPACIO
Unidad Ejecutora - UE
artículos
Título:
A Hubble Space Telescope/NICMOS view of the prototypical giant H ii region NGC604 in M33
Autor/es:
BARBÁ, R.H.; MAIZ APELLANIZ, J.; PÉREZ, E.; RUBIO, M.; BOLATTO, A.; FARIÑA, C.; BOSCH, G.; WALBORN, N.
Revista:
ASTROPHYSICS AND SPACE SCIENCE
Editorial:
SPRINGER
Referencias:
Año: 2009 vol. 324 p. 309 - 313
ISSN:
0004-640X
Resumen:
We present the first high-spatial-resolution near-infrared (NIR) imaging
of NGC604, obtained with the NICMOS camera onboard the Hubble Space
Telescope (HST). These NICMOS broad-band images reveal new NIR point
sources, clusters, and diffuse structures. We find an excellent spatial
correlation between the 8.4 GHz radio continuum and the 2.2 μm
nebular emission. Moreover, massive young stellar object candidates
appear aligned with these radio peaks, reinforcing the idea that those
areas are star-forming regions. Three different scaled OB associations
are recognized in the NICMOS images. The brightest NIR sources in our
images have properties that suggest that they are red supergiant stars,
of which one was previously known. This preliminary analysis of the
NICMOS images shows the complexity of the stellar content of the NGC604
nebula.