Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.7904o&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #79.04; Bulletin of the American Astronomical Society, Vol. 34, p.1234
Astronomy and Astrophysics
Astronomy
Scientific paper
We present deep optical spectroscopy of one of the extended Lyα emission-line blobs located in an over-density region at redshift z ≈ 3.1; the blob 1 found by Steidel et al. (2000). The origin of such Lyα blobs has been in debate for these years and possible ideas are either a dust-enshrouded, extreme starburst galaxy with a large-scale galactic outflow (superwind) or a proto-galaxy with cooling radiation from dark matter halos. Examination of the kinematical properties of Lyα emission-line gas will allow us to discriminate its nature. Motivated by this, we have performed 3.5 hours optical spectroscopy of the blob 1 using the 8.2 m Subaru Telescope and found that its kinematical properties are well understood in terms of the superwind activity.
Iye Masanori
Kawabata Koji S.
Murayama Takashi
Nagao Tatsuya
Ohyama Yoichi
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