Speaker
Ludovica Varisco
(Univ. Milano Bicocca)
Description
Virial–based methods for estimating active supermassive black hole masses are commonly used on extremely large spectroscopic quasar catalogs. Most spectral analyses, though, do not pay enough attention to the detailed continuum decomposition. To understand how this affects virial mass estimates, I tested the influence of host galaxy light on them by means of a detailed spectral analysis with the new software QSFit.
I will show that taking or not the host galaxy component into consideration influences the emission line fitting. This can significantly affect the viral mass estimates, especially at low redshift, where in fact dimmer quasars and more visible host galaxies are observed.
| Affiliation | Università degli Studi Milano-Bicocca |
|---|
Primary author
Ludovica Varisco
(Univ. Milano Bicocca)
Co-authors
Tullia Sbarrato
(Università degli Studi di Milano - Bicocca)
Giorgio Calderone
(Istituto Nazionale di Astrofisica (INAF))
Prof.
Massimo Dotti
(Università degli Studi Milano-Bicocca)
