Results 21 to 30 of about 69,394 (286)

Satellite galaxies in hydrodynamical simulations of Milky Way sized galaxies [PDF]

, 2010
Collisionless simulations of the CDM cosmology predict a plethora of dark matter substructures in the halos of Milky Way sized galaxies, yet the number of known luminous satellites galaxies is very much smaller, a discrepancy that has become known as the
Aharonian, Bekki, Belokurov, Belokurov, Belokurov, Belokurov, Belokurov, Benson, Benson, Book, Bruzual, Bullock, Busha, Colín, Croton, Dekel, Di Matteo, Diemand, Diemand, Dolag, Enßlin, Gilmore, Gnedin, Grebel, Haardt, Hoeft, Hopkins, Irwin, Jubelgas, Katz, Kennicutt, Klypin, Koposov, Kravtsov, Li, Liu, Longair, Macciò, Macciò, Madau, Markus Wadepuhl, Martin, Martin, Mateo, Moore, Okamoto, Okamoto, Oppenheimer, Orban, Pfrommer, Pfrommer, Pfrommer, Primack, Scannapieco, Scannapieco, Simon, Somerville, Springel, Springel, Springel, Springel, Springel, Springel, Stadel, Stoehr, Strigari, Strigari, Strigari, Thacker, Tollerud, Van Den Bergh, Van Den Bergh, Volker Springel, Walker, Walsh, Walsh, Watkins, White, Willman, Willman, Willman, Wolf, Woo, York, Zucker, Zucker   +85 more
core   +1 more source

Globular cluster formation within the Aquarius simulation [PDF]

, 2009
The Aquarius project is a very high-resolution simulation capable of resolving the full mass range of potential globular cluster (GC) formation sites.
Ashman, Ashman, B. F. Griffen, Baumgardt, Baumgardt, Beasley, Bekki, Bekki, Bianchi, Brodie, Chandrasekhar, De Angeli, Eggen, Forbes, Gao, Georgiev, Gnedin, Gnedin, Harris, Holtzman, J. C. Helly, K. A. Pimbblet, Kravstov, Kruijssen, Leitherer, M. J. Drinkwater, Madau, Maraston, Marín-Franch, Mateo, Moore, Nishi, Ostriker, P. A. Thomas, Peebles, Power, Prieto, Ricotti, Salaris, Searle, Sokasian, Springel, Springel, Springel, Toomre, Tumlinson, Weidner, West, Whitmore, Zepf   +49 more
core   +3 more sources

The Next Generation Virgo Cluster Survey (NGVS). XXXV. First Kinematical Clues of Overly Massive Dark Matter Halos in Several Ultradiffuse Galaxies in the Virgo Cluster

The Astrophysical Journal, 2023
We present Keck/DEIMOS spectroscopy of the first complete sample of ultradiffuse galaxies (UDGs) in the Virgo cluster. We select all UDGs in Virgo that contain at least 10 globular cluster (GC) candidates and are more than 2.5 σ outliers in scaling ...
Elisa Toloba, Laura V. Sales, Sungsoon Lim, Eric W. Peng, Puragra Guhathakurta, Joel Roediger, Kaixiang Wang, J. Christopher Mihos, Patrick Côté, Patrick R. Durrell, Laura Ferrarese   +10 more
doaj   +1 more source

The Age of the Universe [PDF]

, 1998
A minimum age of the universe can be estimated directly by determining the age of the oldest objects in the our Galaxy. These objects are the metal-poor stars in the halo of the Milky Way.
Chaboyer, Brian
core   +3 more sources

Discovery of new Milky Way star cluster candidates in the 2MASS Point Source Catalog. II. Physical properties of the star cluster CC 01 [PDF]

Astronomy & Astrophysics, 2003
Three new obscured Milky Way clusters were detected as surface density peaks in the 2MASS point source catalog during our on-going search for hidden globular clusters and massive Arches-like star clusters. One more cluster was discovered serendipitously during a visual inspection of the candidates.
Borissova, J, Pessev, P, Ivanov, VD, Saviane, I, Kurtev, R, Ivanov, GR   +5 more
openaire   +3 more sources

Uncertainties in models of stellar structure and evolution [PDF]

, 2014
Numerous physical aspects of stellar physics have been presented in Ses- sion 2 and the underlying uncertainties have been tentatively assessed. We try here to highlight some specific points raised after the talks and during the general discus- sion at ...
A. Bonaca, A. Maeder, A. Miglio, A.-M. Broomhall, B. Paxton, C. Charbonnel, C. Charbonnel, C. Charbonnel, C. Chiappini, D. Geisler, D. Reimers, F. D’Antona, F. D’Antona, G. Houdek, H. Bruntt, H. Pablo, I. McDonald, J. Meléndez, J. Molenda-Żakowicz, J. Montalbán, K. Brogaard, K.-P. Schröder, L. Casagrande, L. Girardi, L. Origlia, L. Siess, M. Asplund, M. Gabriel, M. W. Jeffries Jr, M. Yıldız, N. Lagarde, P. Eggenberger, P. P. Eggleton, P. P. Eggleton, R. J. Stancliffe, R. K. Ulrich, S. Basu, S. Kato, V. Castellani, V. Silva Aguirre   +39 more
core   +3 more sources

An innovative model of a non-relativist universe [PDF]

E3S Web of Conferences, 2020
The paper investigates a model of the local Universe based on the concepts of nonrelativistic physics. The space-time boundaries of its applicability are estimated.
Baryshnikova Olga, Sapelnik Catherine, Fedoseeva Lyudmila   +2 more
doaj   +1 more source

Gas Loss by Ram Pressure Stripping and Internal Feedback From Low Mass Milky Way Satellites

, 2016
The evolution of dwarf satellites of the Milky Way is affected by the combination of ram pressure and tidal stripping, and internal feedback from massive stars.
Emerick, Andrew, Gatto, Andrea, Grcevich, Jana, Mac Low, Mordecai-Mark   +3 more
core   +1 more source

Latest results on dark matter searches with H.E.S.S [PDF]

EPJ Web of Conferences, 2019
The nature of Dark Matter (DM) is one of the most debated questions of contemporary physics. Ground-based arrays of Cherenkov telescopes such as the High Energy Spectroscopic System (H.E.S.S.) search for DM signatures through the detection of Very-High ...
Rinchiuso Lucia
doaj   +1 more source

On the persistence of two small-scale problems in {\Lambda}CDM

, 2015
We investigate the degree to which the inclusion of baryonic physics can overcome two long-standing problems of the standard cosmological model on galaxy scales: (i) the problem of satellite planes around Local Group galaxies, and (ii) the "too big to ...
Famaey, Benoit, Kroupa, Pavel, Merritt, David, Pawlowski, Marcel S.   +3 more
core   +2 more sources