1997/02/07 by I. Aretxaga, Itziar Aretxaga, Aretxaga, Itziar +5
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9702074
6 pages, 4 Figures, Latex, uses lamuphys.sty, also available at http://www.mpa-garching.mpg.de/~itziar To appear in the Proceedings of the ESO/IAC Conference on 'Quasar Hosts' ESO Astrophysics Symposia eds. D. Clements and I. Perez-Fournon
arxiv created 1997/02/07 · openalex publication_date 1997/02/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present results of the hosts of four high-redshift (z ≈ 2) and high luminosity (MB \lsim -28 mag) QSOs, three radio-quiet one radio-loud, imaged in R and K bands. The extensions to the nuclear unresolved source are most likely due to the hosts galaxies of these QSOs, with luminosities at rest-frame 2300Åof at least 3-7% of the QSO luminosity, and most likely around 6-18% of the QSO luminosity. Our observations show that, if the extensions we have detected are indeed galaxies, extraordinary big and luminous host galaxies are not only a characteristic of radio-loud objects, but of QSOs as an entire class.