Name: Elysandra Figueredo

Institution: The Open University

e-mail: e.figueredo@open.ac.uk

Partner Contry: UK

Science Meeting: Yes

User Meeting: Yes

NGO Staff Meeting: None Selected

Presentation: Yes

Format: Poster

Title: Gemini South/GNIRS Spectroscopy of Massive Objects in the GHIIR: G331.5-0.1 and G305.2 0.0

Co-author: 1. Robert Blum 2. Augusto Damineli 3. Peter Conti

Co-authors' Institutions: 1. NGSC - Tucson 2. University of Sao Paulo - Brazil 3. JILA - Colorado

Abstract:

We present GNIRS K-band spectroscopy of newly born OB stars in the obscured Galactic giant HII regions G331.5-0.1 and G305.2 0.0. Ours results constrain the distance of both regions and break the ambiguity in the distance determinations from radio techniques. O-type stars are identified, classified and the spectroscopic parallaxes indicate a distance smaller than the kinematic values. As a consequence, both regions are fainter than previously determined. As with the other radio selected GHII regions we have studied previously, our spectra revel other massive objects still accreting matter.

Comments:

My attendance depends on UK gemini office funding.