Discovery of the high--ionization emission line [Ne V] 3426 in the blue compact dwarf galaxy Tol 1214-277

(2) Universitaets--Sternwarte; (3) University of California; (4) University of Virginia; Charlottesville; Germany; Goettingen; K. G. Noeske (2)(3); K. J. Fricke (2) ((1) Main Astronomical Observatory; Kyiv; N. G. Guseva (1)

arxiv: astro-ph/0401174 · v1 · submitted 2004-01-10 · 🌌 astro-ph

Discovery of the high--ionization emission line [Ne V] 3426 in the blue compact dwarf galaxy Tol 1214-277

Y. I. Izotov (1) , K. G. Noeske (2)(3) , N. G. Guseva (1) , P. Papaderos (2) , T. X. Thuan (4) , K. J. Fricke (2) ((1) Main Astronomical Observatory , Kyiv , Ukraine

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(2) Universitaets--Sternwarte Goettingen Germany (3) University of California Santa Cruz USA (4) University of Virginia Charlottesville USA)

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keywords emissionlinex-raybluecompactdiscoverydwarfgalaxy

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The 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.

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Discovery of the high--ionization emission line [Ne V] 3426 in the blue compact dwarf galaxy Tol 1214-277

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