Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-26T18:48:47.204Z Has data issue: false hasContentIssue false

NIR studies of galactic giant HII regions

Published online by Cambridge University Press:  08 November 2005

A. Damineli
Affiliation:
IAGUSP, University of São Paulo, 05508-900, Brazil email: [email protected]
R. D. Blum
Affiliation:
Cerro Tololo Interamerican Observatory, Casilla 603, La Serena, Chile email: [email protected]
E. Figuerêdo
Affiliation:
IAGUSP, University of São Paulo, 05508-900, Brazil email: [email protected]
P. S. Conti
Affiliation:
JILA, University of Colorado, Campus Box 440, Boulder, CO, 80309, USA email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present results from our ongoing survey of Galactic Giant HII Regions in the near-infrared. The luminosity function indicates that the IMF is uniform, independent of the galactocentric distance and compatible with Salpeter (1955) slope. Distances measured by the spectroscopic parallax method are systematically smaller than kinematic distances derived from radio techniques. As a consequence, the number of ionizing photons and the star formation rate is much lower than that derived from rotation models. Although the luminosities of the giant HII regions obtained from this method are lower than by other methods, the morphological type of the Milky Way is well in line of previous results, close to Sbc or Sc types.

Type
Contributed Papers
Copyright
© 2005 International Astronomical Union