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DTSTART;TZID=Europe/Rome:20161012T114500
DTEND;TZID=Europe/Rome:20161012T124500
DTSTAMP:20260429T071717
CREATED:20161007T164156Z
LAST-MODIFIED:20161007T164156Z
UID:1748-1476272700-1476276300@www.oa-roma.inaf.it
SUMMARY:Quasars and their host galaxies in the first Gyr of the Universe
DESCRIPTION:Quasars are the brightest (non-transient) objects observed at the highest\nredshifts\, z>7. Such high redshift quasars are important for several\nreasons. Firstly\, detailed analysis of quasar spectra provide unique\ninformation about the baryonic and physical condition of the Universe\nduring the epoch of reionisation.  Furthermore\, the density of high\nredshift quasars puts powerful constraints on the mechanisms that are\nrequired to seed and grow >10^9 Msun supermassive black holes less than a\nGyr after the Big Bang.  Lastly\, as these massive black holes are thought\nto be located in the progenitors of the massive early type galaxies we see\nin the local Universe\, studying the host galaxies of the most distant\nquasars enables us to probe the formation of massive galaxies in the early\nUniverse. \nBecause high redshift quasars are rare\, multi-band surveys covering large\nareas on the sky are required to discover such objects. In this talk I\nwill describe our successful programme aimed at discovering quasars at the\nhighest redshifts in various optical and near-infrared surveys\, such as\nPan-STARRS1\, UKIDSS and VIKING. I will highlight the results of our\nsearch\, which includes the discovery of more than 100 new quasars in the\nfirst Gyr of the Universe. I will describe our on-going multi-wavelength\nfollow-up observations to characterise the distant quasars\, their power\nsource and their environment\, in particular our ALMA programmes to study\nthe galaxies hosting these luminous objects. I will present the results of\nthese observations\, and discuss the implications for massive galaxy and\nblack hole formation at high redshift and our understanding of the\nrelation between the black hole mass and the bulge mass of galaxies.
URL:https://www.oa-roma.inaf.it/event/quasars-and-their-host-galaxies-in-the-first-gyr-of-the-universe/
LOCATION:Aula Gratton
CATEGORIES:Seminari
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20161012T114500
DTEND;TZID=Europe/Rome:20161012T124500
DTSTAMP:20260429T071717
CREATED:20161007T164156Z
LAST-MODIFIED:20161007T164156Z
UID:4695-1476272700-1476276300@www.oa-roma.inaf.it
SUMMARY:Quasars and their host galaxies in the first Gyr of the Universe
DESCRIPTION:Quasars are the brightest (non-transient) objects observed at the highest\nredshifts\, z>7. Such high redshift quasars are important for several\nreasons. Firstly\, detailed analysis of quasar spectra provide unique\ninformation about the baryonic and physical condition of the Universe\nduring the epoch of reionisation.  Furthermore\, the density of high\nredshift quasars puts powerful constraints on the mechanisms that are\nrequired to seed and grow >10^9 Msun supermassive black holes less than a\nGyr after the Big Bang.  Lastly\, as these massive black holes are thought\nto be located in the progenitors of the massive early type galaxies we see\nin the local Universe\, studying the host galaxies of the most distant\nquasars enables us to probe the formation of massive galaxies in the early\nUniverse. \nBecause high redshift quasars are rare\, multi-band surveys covering large\nareas on the sky are required to discover such objects. In this talk I\nwill describe our successful programme aimed at discovering quasars at the\nhighest redshifts in various optical and near-infrared surveys\, such as\nPan-STARRS1\, UKIDSS and VIKING. I will highlight the results of our\nsearch\, which includes the discovery of more than 100 new quasars in the\nfirst Gyr of the Universe. I will describe our on-going multi-wavelength\nfollow-up observations to characterise the distant quasars\, their power\nsource and their environment\, in particular our ALMA programmes to study\nthe galaxies hosting these luminous objects. I will present the results of\nthese observations\, and discuss the implications for massive galaxy and\nblack hole formation at high redshift and our understanding of the\nrelation between the black hole mass and the bulge mass of galaxies.
URL:https://www.oa-roma.inaf.it/event/quasars-and-their-host-galaxies-in-the-first-gyr-of-the-universe-2/
LOCATION:Aula Gratton
CATEGORIES:Seminari
END:VEVENT
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