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29 March 2024
 
  » arxiv » astro-ph/0401174

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Discovery of the high--ionization emission line [Ne V] 3426 in the blue compact dwarf galaxy Tol 1214-277
Y. I. Izotov ; K. G. Noeske ; N. G. Guseva ; P. Papaderos ; T. X. Thuan ; K. J. Fricke ;
Date 10 Dec 2003
Journal Astron.Astrophys. 415 (2004) L27
Subject astro-ph
Affiliation Main Astronomical Observatory, Kyiv, Ukraine, Universitaets--Sternwarte, Goettingen, Germany, University of California, Santa Cruz, USA, University of Virginia, Charlottesville, USA
AbstractThe discovery of the high-ionization [Ne V] 3426A emission line in the spectrum of the blue compact dwarf (BCD) galaxy Tol 1214-277 is reported. The detection of this line implies the presence of intense ionizing X-ray emission with a luminosity in the range 10^39-10^40 erg/s. Such a high X-ray luminosity cannot be reproduced by models of massive stellar populations. Other mechanisms, such as fast shocks or accretion of gas in high-mass X-ray binaries need to be invoked to account for the high intensity of the [Ne V] 3426A emission line.
Source arXiv, astro-ph/0401174
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