Zobrazeno 1 - 10
of 178
pro vyhledávání: '"Mauro D’Onofrio"'
Autor:
Paola Marziani, Alberto Floris, Alice Deconto-Machado, Swayamtrupta Panda, Marzena Sniegowska, Karla Garnica, Deborah Dultzin, Mauro D’Onofrio, Ascensión Del Olmo, Edi Bon, Nataša Bon
Publikováno v:
Physics, Vol 6, Iss 1, Pp 216-236 (2024)
The 4D (four-dimensional) eigenvector 1 (E1) sequence has proven to be a highly effective tool for organizing observational and physical properties of type-1 active galactic nuclei (AGNs). In this paper, we present multiple measurements of metallicit
Externí odkaz:
https://doaj.org/article/433f6c3d1e2040cebe8b3b58f1e07837
Autor:
Dragana Ilić, Luka Č. Popović, Alexander Burenkov, Elena Shablovinskaya, Eugene Malygin, Roman Uklein, Alexei V. Moiseev, Dmitry Oparin, Víctor M. Patiño Álvarez, Vahram Chavushyan, Paola Marziani, Mauro D’Onofrio, Alberto Floris, Andjelka B. Kovačević, Jovana Jovičić, Djordje Miković, Nemanja Rakić, Saša Simić, Sladjana Marčeta Mandić, Stefano Ciroi, Amelia Vietri, Luca Crepaldi, Ascensión del Olmo
Publikováno v:
Physics, Vol 6, Iss 1, Pp 31-45 (2023)
Properties of the broad line region (BLR) in active galactic nuclei (AGNs) are commonly used to estimate the mass of the supermassive black hole (SMBH) that powers an AGN. However, the understanding of the physics behind the BLR remains incomplete. T
Externí odkaz:
https://doaj.org/article/4dbd3537da644f71b4f6456bd97b2b91
Publikováno v:
Universe, Vol 10, Iss 6, p 254 (2024)
In this work we discuss the correlation between luminosity L and velocity dispersion σ observed in different astrophysical contexts, in particular that of early-type galaxies (ETGs; Faber–Jackson (FJ) law) and that of active galactic nuclei (AGN).
Externí odkaz:
https://doaj.org/article/4c344a48e4934f0693e1670c48e28d99
Autor:
Dennis Zaritsky, Giulia Golini, Richard Donnerstein, Ignacio Trujillo, Mohammad Akhlaghi, Nushkia Chamba, Mauro D’Onofrio, Sepideh Eskandarlou, S. Zahra Hosseini-ShahiSavandi, Raúl Infante-Sainz, Garreth Martin, Mireia Montes, Javier Román, Nafise Sedighi, Zahra Sharbaf
Publikováno v:
The Astronomical Journal, Vol 168, Iss 2, p 69 (2024)
We present an overview of the LBT Imaging of Galactic Halos and Tidal Structures survey, which currently includes 25 nearby galaxies that are on average ∼1 mag fainter than the Milky Way, and a catalog of 54 low central surface brightness (24 < μ
Externí odkaz:
https://doaj.org/article/6260ad6bc30c41b6b50aa186d10dbc5a
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2021)
We review the properties of the established Scaling Relations (SRs) of galaxies and active galactic nuclei (AGN), focusing on their origin and expected evolution back in time, providing a short history of the most important progresses obtained up to
Externí odkaz:
https://doaj.org/article/baa65f8e6ab144a2b6a53d947d53b59a
Autor:
Deborah Dultzin, Paola Marziani, J. A. de Diego, C. A. Negrete, Ascensión Del Olmo, Mary L. Martínez-Aldama, Mauro D'Onofrio, Edi Bon, Natasa Bon, Giovanna M. Stirpe
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 6 (2020)
Quasars accreting matter at very high rates (known as extreme Population A [xA] quasars, possibly associated with super-Eddington accreting massive black holes) may provide a new class of distance indicators covering cosmic epochs from present day up
Externí odkaz:
https://doaj.org/article/de94c6eb2ad342a6bd9f8e8e599a447e
Autor:
Mauro D’Onofrio, Cesare Chiosi
Publikováno v:
Universe, Vol 8, Iss 1, p 8 (2021)
We have analyzed the distribution of early-type galaxies (ETGs) in the effective surface intensity vs. effective radius (Ie−Re) plane and in the total luminosity vs. central stellar velocity dispersion (L−σ) diagram, with the aim of studying the
Externí odkaz:
https://doaj.org/article/a26e302a5bea4e639301c39e6a50e3f0
Publikováno v:
Atoms, Vol 8, Iss 4, p 94 (2020)
This paper reviews several basic emission properties of the UV emission lines observed in the spectra of quasars and type-1 active galactic nuclei, mainly as a function of the ionization parameter, metallicity, and density of the emitting gas. The an
Externí odkaz:
https://doaj.org/article/d6a170cbb06248dd8207126316da56b9
Autor:
Mauro D'Onofrio, Paola Marziani
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 5 (2018)
In the next 30 years, a new generation of space and ground-based telescopes will permit to obtain multi-frequency observations of faint sources and, for the first time in human history, to achieve a deep, almost synoptical monitoring of the whole sky
Externí odkaz:
https://doaj.org/article/9c11bbbcb60a4b45b343236f9e84a535
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 5 (2018)
Externí odkaz:
https://doaj.org/article/4f9a97920f3f4d5c90bb8aa43a20d25f