Issue |
A&A
Volume 393, Number 1, October I 2002
|
|
---|---|---|
Page(s) | 33 - 42 | |
Section | Cosmology (including clusters of galaxies) | |
DOI | https://doi.org/10.1051/0004-6361:20020925 | |
Published online | 18 September 2002 |
Spectral Energy Distributions of starburst
galaxies in the 900–1200
range
1
Laboratoire d'Astrophysique de Marseille, BP 8, 13376 Marseille Cedex 12, France e-mail: denis.burgarella@astrsp-mrs.fr,jean-michel.d eharveng@astrsp-mrs.fr
2
Institut d'Astrophysique de Paris, Bd Arago, Paris, France e-mail: kunth@iap.fr
Corresponding author: V. Buat, veronique.buat@astrsp-mrs.fr
Received:
21
May
2002
Accepted:
6
June
2002
We present the 970–1175 spectral energy
distributions (SEDs) of 12 starburst galaxies observed with the Far Ultraviolet
Spectroscopic Explorer FUSE.
We benefit from the high spectral resolution of FUSE to estimate a
continuum as much as possible unaffected by
the interstellar lines. The continuum is rather
flat with, in a few cases, a decrease at
, the
amplitude
of
which is correlated with various indicators of dust extinction. The
far-UV SEDs are compared with synthetic population models. The galaxies with
almost no extinction have an SED consistent with on-going star formation over
some Myrs. We derive a mean dust attenuation law in the wavelength range
965–1140
by comparing the SED of
obscured galaxies to an empirical dust-free SED. The extinction is nearly
constant longward of 1040
but rises at shorter wavelengths. We compare
our results with other studies of extinction for galaxies and stars in this
wavelength range.
Key words: galaxies: starburst / ISM: dust, extinction / ultraviolet: galaxies
© ESO, 2002
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