Lyalpha emission at Z ~ z_em around the quasar J2233-606 in the Hubble Deep Field South

Details Lyalpha emission at Z ~ z_em around the quasar J2233-606 in the Hubble Deep Field South Lyalpha emission at Z ~ z_em around the quasar J2233-606 in the Hubble Deep Field South

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...343l..40b&link_type=abstract

Astronomy and Astrophysics, v.343, p.L40-L44 (1999)

Astronomy and Astrophysics

Astrophysics

14

Cosmology: Observations, Galaxies: Quasars: General, Galaxies: Halos, Galaxies: Clusters: General

Scientific paper

The STIS Hubble Deep Field South around the quasar J2233-606 was observed in the course of the VLT-UT1 Science Verification programme with the Test Camera in two broad-band filters, B and R, and in a narrow-band filter roughly centered at the quasar emission redshift, z_em = 2.238. The most striking result is the discovery of a giant Lyalpha nebulosity around this radio-weak quasar, with an overall extent of 9.2('') x 12.1('') or 121 x 159 h50(-2) kpc(2) and a luminosity of 3.1 x 10(44) h50(-2) erg s(-1) (for q_0 = 0), similar to those found around radio-loud quasars and radio galaxies. There are three additional emission-line candidates in a 1.11(') x 1.24(') field with an observed Lyalpha flux above our 3sigma Lyalpha detection limit of 1.9 x 10(-17) erg s(-1) cm(-2) for point sources. The resolved bright object located 4.9('') north-east of the quasar, which has recently been identified as a galaxy at z_g = 0.57, has an associated, weak Mg ii absorption in the quasar spectrum. Based on observations collected at the European Southern Observatory, Paranal, Chile.

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