104 citations · 262 across the 8 of their papers we have counts for
8 papers
Low-redshift quasars in the SDSS Stripe 82 II: associated companion galaxies and signature of star formation
Maria Babakhanyan Stone, Daniela Bettoni, Renato Falomo +4
We present optical spectroscopy of the close companions of 22 low redshift (z<0.5) quasars (QSO) selected from a larger sample of QSO in the SDSS Stripe82 region for which both the…
On the role of the environments and star formation for quasar activity
D. Bettoni, R. Falomo, J. K. Kotilainen +1
We investigate the host galaxy and environment properties of a sample of 400 low z (<0.5) quasars that were imaged in the SDSS Stripe82. We can detect and study the properties of t…
Diversity in extinction laws of Type Ia supernovae measured between and
R. Amanullah, J. Johansson, A. Goobar +36
We present ultraviolet (UV) observations of six nearby Type~Ia supernovae (SNe~Ia) obtained with the Hubble Space Telescope, three of which were also observed in the near-IR (NIR)…
The host-galaxy of the gamma-ray Narrow-line Seyfert 1 galaxy 1H~0323+342
J. León-Tavares, J. Kotilainen, V. Chavushyan +12
We present optical and near infrared (NIR) imaging data of the radio-loud Narrow-line Seyfert 1 galaxy 1H 0323+342, which shows intense and variable gamma-ray activity discovered b…
The black hole - host galaxy relation for very low-mass quasars
Jimit Sanghvi, Jari Kotilainen, Renato Falomo +3
Recently, the relation between the masses of the black hole () and the host galaxy () in quasars has been probed down to the parameter space of $M_{BH}\sim10^8 M_…
Low redshift quasars in the SDSS Stripe 82. The local environments
K. Karhunen, J. K. Kotilainen, R. Falomo +1
We study the environments of low redshift (z < 0.5) quasars based on a large and homogeneous dataset from the Stripe 82 region of the Sloan Digital Sky Survey (SDSS). We have compa…
Low redshift quasars in the SDSS Stripe 82. The host galaxies
R. Falomo, D. Bettoni, K. Karhunen +2
We present a photometrical and morphological study of the properties of low redshift (z < 0.5) quasars based on a large and homogeneous dataset of objects derived from the Sloan Di…
Quasar host galaxies in the SDSS Stripe 82
Jari Kotilainen, Renato Falomo, Daniela Bettoni +2
We present first results from our study of the properties of ~400 low redshift (z < 0.5) quasars, based on a large homogeneous dataset derived from the Stripe 82 area of the Sloan…