Published January 1990 | Version v1
Journal article Metadata-only

Brackett line spectroscopy of bursts of star formation in the nuclei of galaxies

Creators

  • 1. California Univ., Los Angeles (USA)
  • 2. Tel Aviv Univ. (Israel)
  • 3. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)

Description

Br-alpha and Br-gamma lines with 7.2 arcsec spatial and 350 km/s spectral resolution have been observed in seven infrared-bright galaxies, and the measurements are used to derive the Lyman continuum flux and the luminosity resulting from young stars. By analyzing the possible range of uncertainties in various parameters of the derivations, it is shown that several of the galaxies appear to have quite extreme conditions, with OB populations that are probably more massive and, in some cases, much younger than seen locally. 65 refs

Additional details

Publishing Information

Journal Title
Astrophysical Journal
Journal Volume
349
Series
Astrophys. J.
Journal Page Range
57-66
ISSN
0004-637X
CODEN
ASJOA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
21055835
Subject category
S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Descriptors DEI
GALAXY NUCLEI; H2 REGIONS; INFRARED RADIATION; LUMINOSITY; LYMAN LINES; SPECTRA; SPECTROSCOPY; STAR EVOLUTION
Descriptors DEC
COSMIC RADIO SOURCES; ELECTROMAGNETIC RADIATION; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; RADIATIONS