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Metallicity evolution, metallicity gradients and gas fractions at z~3.4
P. Troncoso, R. Maiolino, V. Sommariva +9
We used near-infrared integral field spectroscopic observations from the AMAZE and LSD programs to constrain the metallicity in a sample of 40 star forming galaxies at 3<z<5 (most…
The supermassive black hole mass - Sérsic index relations for bulges and elliptical galaxies
Giulia Savorgnan, Alister W. Graham, Alessandro Marconi +4
Scaling relations between supermassive black hole mass, M_BH, and host galaxy properties are a powerful instrument for studying their coevolution. A complete picture involving all…
Parsec-scale dust emission from the polar region in the type 2 nucleus of NGC 424
Sebastian F. Hoenig, Makoto Kishimoto, Robert Antonucci +4
Advancements in infrared IR open up the possibility to spatially resolve AGN on the parsec-scale level and study the circumnuclear dust distribution, commonly referred to as the "d…
Near-infrared spectroscopy of a nitrogen-loud quasar SDSS J1707+6443
N. Araki, T. Nagao, K. Matsuoka +6
We present near-infrared spectroscopy of the z=3.2 quasar SDSS J1707+6443, obtained with MOIRCS on the Subaru Telescope. This quasar is classified as a "nitrogen-loud" quasar becau…
Stellar metallicity of star-forming galaxies at z ~ 3
Veronica Sommariva, Filippo Mannucci, Giovanni Cresci +5
The stellar metallicity is a direct measure of the amount of metals present in a galaxy, as a large part of the metals lie in its stars. In this paper we investigate new stellar me…
Spectroastrometry of rotating gas disks for the detection of supermassive black holes in galactic nuclei. II. Application to the galaxy Centaurus A (NGC 5128)
A. Gnerucci, A. Marconi, A. Capetti +3
We measure the black hole mass in the nearby active galaxy Centaurus A (NGC 5128) using a new method based on spectroastrometry of a rotating gas disk. The spectroastrometric appro…