A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
The evolution of radio loud quasar host galaxies: AO observations at z similar to 3
Tekijät: Falomo R, Kotilainen JK, Scarpa R, Treves A, Uslenghi M
Kustantaja: ELSEVIER SCI LTD
Julkaisuvuosi: 2006
Lehti:: New Astronomy Reviews
Tietokannassa oleva lehden nimi: NEW ASTRONOMY REVIEWS
Lehden akronyymi: NEW ASTRON REV
Vuosikerta: 50
Numero: 9-10
Aloitussivu: 732
Lopetussivu: 735
Sivujen määrä: 4
ISSN: 1387-6473
DOI: https://doi.org/10.1016/j.newar.2006.06.028
Tiivistelmä
We report on ESO VLT adaptive optics imaging of one radio-loud quasar at z similar to 3. In spite of the large distance of the object we are able to detect its surrounding extended nebulosity the properties of which are consistent with an underlying massive galaxy of M-K similar to -27 and effective radius R-e = 7 kpc. As far as we know this is the clearest detection of a radio loud quasar host at high redshift. The host luminosity is indicative of the existence of massive spheroids even at this early cosmic epoch. The host luminosity is about 1 magnitude fainter than the expected value based on the average trend of the host galaxies of RLQ at lower redshift. The result, which however is based on a single object, suggests that at z similar to 3 there is a deviation from a luminosity-redshift dependence regulated only by passive evolution. (c) 2006 Elsevier B.V. All rights reserved.
We report on ESO VLT adaptive optics imaging of one radio-loud quasar at z similar to 3. In spite of the large distance of the object we are able to detect its surrounding extended nebulosity the properties of which are consistent with an underlying massive galaxy of M-K similar to -27 and effective radius R-e = 7 kpc. As far as we know this is the clearest detection of a radio loud quasar host at high redshift. The host luminosity is indicative of the existence of massive spheroids even at this early cosmic epoch. The host luminosity is about 1 magnitude fainter than the expected value based on the average trend of the host galaxies of RLQ at lower redshift. The result, which however is based on a single object, suggests that at z similar to 3 there is a deviation from a luminosity-redshift dependence regulated only by passive evolution. (c) 2006 Elsevier B.V. All rights reserved.
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