Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.277l..51b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 277, Issue 2, pp. L51-L54.
Astronomy and Astrophysics
Astronomy
2
Galaxies: Abundances, Galaxies: Active, Galaxies: Individual: 1614+051A, Infrared: Galaxies
Scientific paper
We report detections of [OIII] and Hβ emission from the radio-quiet companion galaxy of the z=3.2 quasar PKS 1614+051. The Lyalpha/Hβ ratio for the galaxy is ~2+/-1, showing evidence for strong absorption or scattering of the Lyalpha emission. The level of Hβ emission from the companion is too high for it to result from gas photoionized by only the quasar radiation, confirming that the gas in the galaxy is ionized by an embedded source and that the companion galaxy is mildly active. The [OIII]/Hβ ratio in the object is lower than in nearby Seyfert 2 galaxies, which implies a low metallicity or a relatively low ionization state for the oxygen. If the latter is true, then carbon lines observed in the optical spectrum are at a higher ionization state than the oxygen lines, further supporting the case for an embedded source of ionization in the galaxy, with a spectrum harder than that of starlight.
Bremer Malcolm N.
Johnstone R. M.
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