On the Formation and Evolution of QSOs |
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Authors: | Stefano Cristiani |
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Institution: | (1) INAF-Osservatorio Astronomico, Trieste, Italy |
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Abstract: | I had the privilege, many years ago, to be supervised by Alfonso Cavaliere in my Master thesis work. I remember the great
patience and enthusiasm with which, in a warm summer day, he presented to me a score of exciting astrophysical problems. We
finally determined to study the relationship of QSOs and BL Lacs—then considered rather exotic object—with normal galaxies.
In the years I have continued on this line of research, reacting far too slowly to the wealth of new ideas that Alfonso has
been continuously injecting in our conversations. As examples I will report two recent results on the chemical abundances
of QSO host galaxies and on the space density of high-z QSOs, which are closely related to our shared interest on AGN. |
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Keywords: | galaxies: active quasars: host galaxies |
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