Computer Science
Scientific paper
Mar 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.427..961s&link_type=abstract
The Universe as Seen by ISO. Eds. P. Cox & M. F. Kessler. ESA-SP 427., p. 961
Computer Science
Survey, Cosmology, Galaxies
Scientific paper
The metal deficient (Z = Zodot/41) Blue Compact Dwarf Galaxy (BCD) SBS 0335-052 was observed with ISOCAM between 5 and 17 μm. With a L12μm/LB ratio of 2.15, the galaxy is unexpectedly bright in the mid-infrared. The spectral energy distribution (SED) is dominated by a very strong continuum which makes the ionic lines of [S iv] and [Ne iii] very weak. From 5 to 17 μm the SED can be fitted with a grey-body spectrum, modified by an extinction law similar to that observed toward the Galactic Center, with an optical depth of AV 19-21 mag. Such a large optical depth implies that a large fraction (as much as 75%) of the current star-formation activity in SBS 0335-052 is hidden by dust with a mass between 3x103 Modot and 5x105 Modot. It is remarkable that such a nearly primordial environment contains as much dust as galaxies which are 10 times more metal-rich. If the hidden star formation in SBS 0335-052 is typical of young galaxies at high redshifts, then the cosmic star formation rate derived from UV/optical fluxes would be underestimated.
Madden Suzanne C.
Sauvage Marc
Thuan Trinh Xuan
No associations
LandOfFree
Dust in the extremely metal-poor galaxy SBS 0335-052 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dust in the extremely metal-poor galaxy SBS 0335-052, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dust in the extremely metal-poor galaxy SBS 0335-052 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1447638