The hosts of $z=2$ QSOs

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We present results of the hosts of four high-redshift ($z \approx 2$) and high luminosity ($M_B \lsim -28$ 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.
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

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