Results 61 to 70 of about 11,545 (216)

Luminosity-Diameter Relations for Globular Clusters and Dwarf Spheroidal Galaxies

, 2008
It is shown that globular clusters and the dwarf spheroidal companions of the Galaxy have a different distribution of flattening values, and appear to occupy adjacent regions of the M_v versus log R_h plane that can be separated by what will be referred ...
Belokurov, Kauffmann, Klypin, Mackey, Mackey, Martin, McLaughlin, Moore, Shapley, Shapley, Shapley, Shapley, Shapley, Sidney van den Bergh, Stonkuté, van den Bergh, van den Bergh   +16 more
core   +1 more source

The Mitchell Spectrograph: Studying Nearby Galaxies with the VIRUS Prototype

Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013
The Mitchell Spectrograph (a.k.a. VIRUS‐P) on the 2.7 m Harlan J. Smith telescope at McDonald Observatory is currently the largest field of view (FOV) integral field unit (IFU) spectrograph in the world (1.7′ × 1.7′). It was designed as a prototype for the highly replicable VIRUS spectrograph which consists of a mosaic of IFUs spread over a 16 ...
Guillermo A. Blanc, Jorge Iglesias Páramo   +1 more
wiley   +1 more source

Exploring the Evolution of a Dwarf Spheroidal Galaxy with SPH Simulations. II. AGN Feedback

The Astrophysical Journal
We investigate active galactic nucleus (AGN) feedback from an intermediate-mass black hole at the center of a dwarf spheroidal galaxy, by performing isolated galaxy simulations using a modified version of the GADGET-3 code. We consider Leo II (PGC 34176)
Roberto Hazenfratz, Paramita Barai, Gustavo A. Lanfranchi, Anderson Caproni   +3 more
doaj   +1 more source

Properties of the Photometric Components of Lenticular Galaxies

Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012
After almost one century since their definition, the origin of lenticular galaxies is still a matter of debate. Several formation processes have been proposed in order to explain the wide variety of their observational properties. These properties could indicate that the class of lenticulars is a family formed by galaxies with different formations and ...
J. Alfonso L. Aguerri, Elias Brinks
wiley   +1 more source

Exploring the Evolution of a Dwarf Spheroidal Galaxy with Smoothed-particle Hydrodynamics Simulations. I. Stellar Feedback

The Astrophysical Journal
A fundamental question regarding the evolution of dwarf spheroidal galaxies is the identification of the key physical mechanisms responsible for gas depletion.
Roberto Hazenfratz, Paramita Barai, Gustavo A. Lanfranchi, Anderson Caproni   +3 more
doaj   +1 more source

HI Observations Towards the Sagittarius Dwarf Spheroidal Galaxy [PDF]

, 1999
We have measured the 21-cm line of Galactic HI over more than 50 square degrees in the direction of the Sagittarius dwarf spheroidal galaxy. The data show no evidence of HI associated with the dwarf spheroidal which might be consider analogous to the ...
Burton, W. B., Lockman, Felix J.
core   +2 more sources

Dwarf Spheroidal Galaxies in the M101 Group and Behind it [PDF]

Astrophysics, 2019
published in Astrophysics, v.62, p.293 ...
Karachentsev, I. D., Makarova, L. N.
openaire   +2 more sources

Advancing rare cancer research by MALDI mass spectrometry imaging: Applications, challenges, and future perspectives in sarcoma

PROTEOMICS, Volume 24, Issue 12-13, June 2024.
Abstract MALDI mass spectrometry imaging (MALDI imaging) uniquely advances cancer research, by measuring spatial distribution of endogenous and exogenous molecules directly from tissue sections. These molecular maps provide valuable insights into basic and translational cancer research, including tumor biology, tumor microenvironment, biomarker ...
Maren Nicole Stillger, Mujia Jenny Li, Pia Hönscheid, Cläre von Neubeck, Melanie Christine Föll   +4 more
wiley   +1 more source

Are Nuclear Star Clusters the Precursors of Massive Black Holes?

Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012
We present new upper limits for black hole masses in extremely late type spiral galaxies. We confirm that this class of galaxies has black holes with masses less than 106M⊙, if any. We also derive new upper limits for nuclear star cluster masses in massive galaxies with previously determined black hole masses.
Nadine Neumayer, C. Jakob Walcher, Francesca Civano   +2 more
wiley   +1 more source

A MegaCam Survey of Outer Halo Satellites. VII. A Single S\'ersic Index v/s Effective Radius Relation for Milky Way Outer Halo Satellites

, 2019
In this work we use structural properties of Milky Way's outer halo ($R_G > 25\,\mathrm{kpc}$) satellites (dwarf spheroidal galaxies, ultra-faint dwarf galaxies and globular clusters) derived from deep, wide-field and homogeneous data, to present ...
Carballo-Bello, Julio A., Chanamé, Julio, Djorgovski, S. G., Geha, Marla, Marchi-Lasch, Sebastián, Muñoz, Ricardo R., Santana, Felipe A., Simon, Joshua D., Stetson, Peter B.   +8 more
core   +1 more source