Results 41 to 50 of about 10,366 (216)
Growth of Accreting Supermassive Black Hole Seeds and Neutrino Radiation
Journal of Astrophysics, Volume 2015, Issue 1, 2015., 2015 In the framework of microscopic theory of black hole (MTBH), which explores the most important processes of rearrangement of vacuum state and spontaneous breaking of gravitation gauge symmetry at huge energies, we have undertaken a large series of numerical simulations with the goal to trace an evolution of the mass assembly history of 377 plausible ...
Gagik Ter-Kazarian, Gary Wegner
wiley +1 more source
Properties of the Hii Regions Derived Using Integral Field Spectroscopy
Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013 Here we review some of our more recent results on the observed properties of Hii regions using Integral Field Spectroscopy. In particular, we illustrate the use of this technique to study in detail the ionization conditions across the nebulae for galactic Hii regions (focused on the Orion Nebula) and the statistical study of large samples of ...
Sebastian F. Sánchez +1 more
wiley +1 more source
M94 as a Unique Testbed for Black Hole Mass Estimates and AGN Activity at Low Luminosities
Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012 We discuss the peculiar nature of the nucleus of M94 (NGC 4736) in the context of new measurements of the broad Hα emission from HST‐STIS observations. We show that this component is unambiguously associated with the high‐resolution X‐ray, radio, and variable UV sources detected at the optical nucleus of this galaxy.
Anca Constantin +2 more
wiley +1 more source
Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010 In this tutorial paper we summarize how the star formation (SF) history of a galactic region can be derived from the colour‐magnitude diagram (CMD) of its resolved stars. The procedures to build synthetic CMDs and to exploit them to derive the SF histories (SFHs) are described, as well as the corresponding uncertainties.
Michele Cignoni +2 more
wiley +1 more source
Acta Polytechnica CTU Proceedings, 2014 Two main physical processes characterize the activity in the nuclear region of active galaxies: an intense star formation (starburst, SB) and an Active Galactic Nucleus (AGN).
Eleonora Sani
doaj +1 more source
From Starburst to Quiescence: Testing AGN feedback in Rapidly Quenching Post-Starburst Galaxies [PDF]
, 2014 Post-starbursts are galaxies in transition from the blue cloud to the red sequence. Although they are rare today, integrated over time they may be an important pathway to the red sequence. This work uses SDSS, GALEX, and WISE observations to identify the
Faber, S. M. +7 more
core +3 more sources
Cosmic Sands: The Origin of Dusty, Star-forming Galaxies in the Epoch of Reionization
The Astrophysical Journal, 2023 We present the Cosmic Sands suite of cosmological zoom-in simulations based on the simba galaxy formation model in order to study the buildup of the first massive and dusty galaxies in the early universe.
Sidney Lower +3 more
doaj +1 more source
Evidence for multiple types of post-starburst galaxies [PDF]
Astronomy & AstrophysicsThe quenching mechanisms of galaxies are not yet fully understood, but post-starburst galaxies provide one explanation for the rapid transition between star-forming and quiescent galaxies. At low redshift, it is generally thought that the starburst initiating the post-starburst phase is merger-driven, however, not all post-starburst galaxies show ...
Nielsen, Emma W. +5 more
openaire +2 more sources
The Ages of Starbursts in Post-Starburst Galaxies [PDF]
The Astronomical Journal, 1996 14 pages + 7 figures, uuencoded gzipped postscript.
Leonardi, Andrew J., Rose, James A.
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A Simple Spectroscopic Technique to Identify Rejuvenating Galaxies
The Astrophysical Journal, 2023 Rejuvenating galaxies are unusual galaxies that fully quench and then subsequently experience a “rejuvenation” event to become star-forming once more. Rejuvenation rates vary substantially in models of galaxy formation: 10%–70% of massive galaxies are ...
Junyu Zhang +6 more
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