Results 41 to 50 of about 166,323 (379)

UGC 7639: A Dwarf Galaxy in the Canes Venatici I Cloud

Advances in Astronomy, 2015
We want to get insight into the formation mechanism and the evolution of UGC 7639, a dwarf galaxy in the Canes Venatici I Cloud (CVnIC). We used archival multiwavelength data to constrain its global properties. Ultraviolet images show that UGC 7639 inner
L. M. Buson, D. Bettoni, P. Mazzei, G. Galletta   +3 more
doaj   +1 more source

Anisotropic Satellite Galaxy Quenching: A Unique Signature of Energetic Feedback by Supermassive Black Holes?

The Astrophysical Journal Letters, 2023
The quenched fraction of satellite galaxies is aligned with the orientation of the halo’s central galaxy, such that on average, satellites form stars at a lower rate along the major axis of the central.
Juliana S. M. Karp, Johannes U. Lange, Risa H. Wechsler   +2 more
doaj   +1 more source

The role of spin in the formation and evolution of galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
Using the SDSS spectroscopic sample, we estimate the dark matter halo spin parameter lambda for ~53,000 disk galaxies for which MOPED star formation histories are available. We investigate the relationship between spin and total stellar mass, star formation history, and environment. First, we find a clear anti-correlation between stellar mass and spin,
Zachory K. Berta, Alan Heavens, Ben Panter, Raul Jimenez, Raul Jimenez   +4 more
openaire   +5 more sources

From Clusters to Proto-Clusters: The Infrared Perspective on Environmental Galaxy Evolution

Universe, 2022
Environment is one of the primary drivers of galaxy evolution; via multiple mechanisms, it can control the critical process of transforming galaxies from star forming to quiescent, commonly termed “quenching”. Despite its importance, however, we still do
Stacey Alberts, Allison Noble
doaj   +1 more source

A Study of Three Galaxy Types, Galaxy Formation, and Warm Dark Matter

International Journal of Astronomy and Astrophysics International Journal of Astronomy and Astrophysics, 2021
We try to bridge the gap between the theory of linear density-velocity-gravi-tational perturbations in the early universe, and the relaxed galaxies we observe today. We succeed quantitatively for dark matter if dark matter is warm.
B. Hoeneisen
semanticscholar   +1 more source

Formation and Evolution of E+A Galaxies in Dusty Starburst Galaxies [PDF]

The Astrophysical Journal, 2001
The formation and evolution of the ``E+A'' (also named ``k+a'' and ``a+k'' types by Dressler et al. 1999) galaxies found in significant numbers in the cores of intermediate redshift clusters has been extensively discussed by many authors. In this paper, we model the spectral, dynamical and morphological evolution of a prime candidate for producing this
Bekki, Kenji, Shioya, Yasuhiro, Couch, William J.   +2 more
openaire   +4 more sources

Parallelization, Special Hardware and Post-Newtonian Dynamics in Direct N - Body Simulations [PDF]

, 2008
The formation and evolution of supermassive black hole (SMBH) binaries during and after galaxy mergers is an important ingredient for our understanding of galaxy formation and evolution in a cosmological context, e.g.
A. Ahmad, C. Lagoute, E.N. Dorband, F.R. Pearce, G. Kupi, G.D. Quinlan, G.D. Quinlan, H.M. Lee, J. Barnes, J. Dubinski, J. Makino, J. Makino, J. Makino, J. Makino, L. Greengard, M. Milosavljević, M. Milosavljević, M.C. Begelman, M.H. Lee, P. Berczik, P. Berczik, P. Kustaanheimo, P.C. Peters, P.C. Peters, R. Spurzem, S. Harfst, S. Mikkola, S. Mikkola, S.F. Portegies Zwart, S.J. Aarseth, S.J. Aarseth, T. Damour, T. Fukushige, T.S. Albada van, W. Dehnen   +34 more
core   +1 more source

Galaxy formation in the Planck cosmology – I. Matching the observed evolution of star formation rates, colours and stellar masses [PDF]

, 2014
We have updated the Munich galaxy formation model to the Planck first-year cosmology, while modifying the treatment of baryonic processes to reproduce recent data on the abundance and passive fractions of galaxies from z = 3 down to z = 0. Matching these
B. Henriques, S. White, P. Thomas, R. Angulo, Q. Guo, G. Lemson, V. Springel, R. Overzier   +7 more
semanticscholar   +1 more source

The Formation and Evolution of Star Clusters and Galaxies [PDF]

Highlights of Astronomy, 2005
AbstractThis paper addresses the questions of what we have learned about how and when dense star clusters form, and what studies of star clusters have revealed about galaxy formation and evolution. One important observation is that globular clusters are observed to form in galaxy mergers and starbursts in the local universe, which both provides ...
Stephen E. Zepf
openalex   +4 more sources

Retracted: Can the chemical industry solve the climate change?On the role of human energy production, renewable energies, and the potential of chemistry as a solution provider

Chemie Ingenieur Technik, EarlyView., 2023
Let us consider an alternative perspective on climate change: The sum of solar radiation and heat generated by human activity result in a net energy input of 1.96 times that of the Sun on the Earth's surface. The expanding global population is expected to exacerbate this issue. Potential solutions are proposed, including replacement and heat recycling.
Martin Bertau, Gerald Steiner
wiley   +1 more source