Results 121 to 130 of about 52,678 (266)

The Stellar Halos of Massive Elliptical Galaxies

, 2012
We use the Mitchell Spectrograph (formerly VIRUS-P) on the McDonald Observatory 2.7m Harlan J. Smith Telescope to search for the chemical signatures of massive elliptical galaxy assembly. The Mitchell Spectrograph is an integral-field spectrograph with a
Adams, Adams, Arimoto, Babul, Bell, Berlind, Blanc, Blanc, Bono, Bower, Brodie, Carollo, Cassata, Cassisi, Conroy, Cox, Damjanov, Dierckx, Dunkley, Eisenhardt, Faber, Finkelstein, Font, Fulbright, Gorgas, Graves, Graves, Graves, Graves, Hill, Jenny E. Greene, Jeremy D. Murphy, Jorgensen, Joshua J. Adams, Julia M. Comerford, Karl Gebhardt, Kelson, Kelson, Kriek, Larson, Miller, Murphy, Naab, Naab, Newman, Ogando, Oser, Papovich, Robaina, Robertson, Rudick, Salasnich, Schiavon, Strateva, Suh, Tal, Tantalo, Terlevich, Thomas, Trager, Tremonti, van Albada, van der Wel, van Dokkum, van Dokkum, van Dokkum, van Dokkum, Venn, White, White, Yan, Yan, Yoachim, Yoachim, York, Zhu   +75 more
core   +1 more source

Commodity risk assessment of Populus alba, Populus nigra and Populus tremula plants from the UK

EFSA Journal, Volume 23, Issue 3, March 2025.
Abstract The European Commission requested the EFSA Panel on Plant Health to prepare and deliver risk assessments for commodities listed in Commission Implementing Regulation (EU) 2018/2019 as ‘High risk plants, plant products and other objects’. This Scientific Opinion covers plant health risks posed by plants of Populus alba, Populus nigra and ...
EFSA Panel on Plant Health (PLH), Antonio Vicent Civera, Paula Baptista, Anna Berlin, Elisavet Chatzivassiliou, Jaime Cubero, Nik Cunniffe, Eduardo de la Peña, Nicolas Desneux, Francesco Di Serio, Anna Filipiak, Beata Hasiów‐Jaroszewska, Hervé Jactel, Blanca B. Landa, Lara Maistrello, David Makowski, Panagiotis Milonas, Nikos Papadopoulos, Roel Potting, Hanna Susi, Dirk Jan van Der Gaag, Andrea Battisti, Claude Bragard, Christer Sven Magnusson, Hugo Mas, Daniel Rigling, Massimo Faccoli, Alžběta Mikulová, Fabio Stergulc, Eugen Christoph, Olaf Mosbach‐Schulz, Franz Streissl, Paolo Gonthier   +32 more
wiley   +1 more source

A New Empirical Model for the Structural Analysis of Early-type Galaxies and a Critical Review of the Nuker Model

, 2003
The Nuker law was designed to match the inner few (~3-10) arcseconds of predominantly nearby (< 30 Mpc) early-type galaxy light-profiles; it was never intended to describe an entire profile.
A. Asensio Ramos, Alister W. Graham, Andredakis Y. C., Binggeli B., Caon N., Caon N., D'Onofrio M., Davies J. I., de Vaucouleurs G., I. Trujillo, James P. A., Marquez I., Peter Erwin, Young C. K., Zhao H., Zhao H.   +15 more
core   +1 more source

THE ELLIPTICITIES OF GALAXIES IN GALAXY CLUSTERS OF DIFFERENT MORPHOLOGICAL TYPE

Odessa Astronomical Publications, 2014
The distribution of galaxy ellipticities was analyzed for 207 rich PF galaxy clusters found in the Munster Red Sky Survey Galaxy Catalogue. Clusters with BM types from a comparison with the ACO catalogue were also classified on the new scheme.
E. A. Panko, P. Flin
doaj   +1 more source

The Relation Between Galaxy Morphology and Environment in the Local Universe: An RC3-SDSS Picture

, 2011
We present an analysis of the z ~ 0 morphology-environment relation for 911 bright (M_B < -19) galaxies, matching classical RC3 morphologies to the SDSS-based group catalog of Yang et al.
Adelman-McCarthy, Baldi, Becker, Bekki, Bell, Bernardi, Blanton, Blanton, Blanton, Bower, Brown, Bundy, Burstein, Buta, Cavagnolo, Cavagnolo, Christlein, Chung, Cox, D'Onofrio, David J. Wilman, de la Rosa, de Vaucouleurs, de Vaucouleurs, Desai, Donahue, Dong, Dressler, Elmegreen, Eskridge, Fasano, Fukugita, Genzel, Gnedin, Granato, Hicks, Hogg, Hopkins, Hopkins, Hopkins, Hopkins, Häring, Just, Kaiser, Kawata, Kewley, Kormendy, Laurikainen, Magorrian, Marconi, Marinova, McCarthy, McNamara, Menéndez-Delmestre, Moore, Moran, Nair, Nair, Nair, Nesci, Noguchi, Nulsen, Peter Erwin, Poggianti, Poggianti, Postman, Rines, Salo, Schawinski, Schlegel, Sellwood, Smith, Springel, Strauss, Sun, Thomas, van Dokkum, von der Linden, Weinmann, West, Wilman, Yang   +81 more
core   +1 more source

Core Formation by Binary Scouring and Gravitational Wave Recoil in Massive Elliptical Galaxies

The Astrophysical Journal
Scouring by supermassive black hole (SMBH) binaries is the most accepted mechanism for the formation of the cores seen in giant elliptical galaxies. However, an additional mechanism is required to explain the largest observed cores.
Nader Khonji, Alessia Gualandris, Justin I. Read, Walter Dehnen   +3 more
doaj   +1 more source

The SLUGGS Survey: Understanding Lenticular Galaxy Formation via Extended Stellar Kinematics

Galaxies, 2017
We present the latest published and preliminary results from the SLUGGS Survey discussing the formation of lenticular galaxies through analysis of their kinematics.
Sabine Bellstedt
doaj   +1 more source

A simple model of spiral galaxies from geometric optics

AIP Advances
We propose a simple model of spiral galaxies based on the interference of gravitational waves. The interference is deduced from geometric optics analysis of the refractive index profiles that mimic the behavior of gravitational potentials −1/r and r2. We
Bogdan Szafraniec, James N. Blake
doaj   +1 more source

The Evolution of Cuspy Triaxial Galaxies Harboring Central Black Holes

, 2001
We use numerical simulations to study the evolution of triaxial elliptical galaxies with central black holes. In contrast to earlier numerical studies which used galaxy models with central density ``cores,'' our galaxies have steep central cusps, like ...
Arnold R., Arnold V. I., Binney J., Colin Norman, Gebhardt K., Gerhard O. E., Gerhard O. E., Goodman J., Goodman J., J. Christopher Mihos, Kelly Holley‐Bockelmann, Kormendy J., Lars Hernquist, Papaphilippou Y., Richstone D., Steinn Sigurdsson   +15 more
core   +1 more source

Compact Elliptical Galaxies

, 2015
In this thesis, a sample of nearby, compact, elliptical galaxies with high central stellar velocity dispersions are studied. By means of high quality photometric and spectroscopic observations, we analyse their structural properties and construct state-of-the-art orbit-based dynamical models to constrain their total mass budgets, including the ...
openaire   +2 more sources