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08 August 2020
  » arxiv » astro-ph/0103167

 Article overview

Recent star formation in very luminous infrared galaxies
A. Bressan ; B. Poggianti ; A. Franceschini ;
Date 12 Mar 2001
Subject astro-ph
AffiliationOsservatorio Astronomico di Padova,IT), B. Poggianti (Osservatorio Astronomico di Padova,IT), A. Franceschini (Dipartimento di Astronomia, Universita’ di Padova, IT
AbstractAmong star forming galaxies, a spectral combination of a strong Hdelta line in absorption and a moderate [OII] emission has been suggested to be a useful method to identify dusty starburst galaxies at any redshift, on the basis of optical data alone. On one side it has been shown that such a spectral particularity is indeed suggestive of obscured starburst galaxies but, on the other, the degeneracy of the optical spectrum has hindered any quantitative estimate of the star formation and extinction during the burst. The optical spectrum by itself, even complemented with the information on the far-IR flux, is not enough to identify univocal evolutionary patterns. We discuss in the following whether it is possible to reduce these uncertainties by extending the spectral analyses to the near infrared spectral region.
Source arXiv, astro-ph/0103167
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