Results 51 to 60 of about 31,858 (173)

New dwarf galaxy candidates in the Centaurus group

, 2015
Recent studies of the distribution and kinematics of the Milky Way and Andromeda satellite galaxy systems have confirmed the existence of coplanar, corotating structures of galaxies. In addition to the 'missing satellite problem', these structures pose a
Binggeli, Bruno, Jerjen, Helmut, Müller, Oliver   +2 more
core   +1 more source

On the Efficiency of the Tidal Stirring Mechanism for the Origin of Dwarf Spheroidals: Dependence on the Orbital and Structural Parameters of the Progenitor Disky Dwarfs [PDF]

, 2010
(Abridged) The tidal stirring model posits the formation of dSph galaxies via the tidal interactions between rotationally-supported dwarfs and MW-sized host galaxies.
Battaglia, Belokurov, Bernard, Besla, Binney, Bullock, Bullock, Caputo, Chiboucas, Cole, Coleman, Coleman, Colpi, D'Onghia, D'Onghia, Dalcanton, Debattista, Diemand, Dubinski, Dubinski, Ewa L. Łokas, Ferguson, Ferguson, Gauthier, Geha, Gilmore, Gnedin, Grcevich, Grebel, Grebel, Grebel, Grillmair, Hargreaves, Hayashi, Ibata, Ibata, Irwin, Kalirai, Kallivayalil, Kazantzidis, Kazantzidis, Kazantzidis, Kazantzidis, Kazantzidis, Klessen, Klypin, Klypin, Kravtsov, Law, Leonidas A. Moustakas, Lisker, Lucio Mayer, Ludlow, Madau, Majewski, Malin, Martin, Martin, Martínez-Delgado, Martínez-Delgado, Mateo, Mayer, Mayer, McGaugh, Monelli, Monelli, Moore, Muñoz, Muñoz, Méndez-Abreu, Newberg, Oh, Orban, Peng, Peñarrubia, Pohlen, Purcell, Ricotti, Shang, Shaw, Simon, Simone Callegari, Sohn, Stadel, Stelios Kazantzidis, Susa, Sánchez-Janssen, Tassis, Tassis, Walker, Walker, Wechsler, Weinberg, White, Widrow, Yanny, Zentner, Łokas, Łokas   +98 more
core   +1 more source

Form flows function: Learner‐centered game Re‐design in a STEM classroom

British Educational Research Journal, EarlyView.
Abstract Re‐designing games facilitates interest‐driven learning and immerses learners in systems thinking. However, there are limited studies exploring how the form and function of tabletop games influence learners' design decisions and learning experiences. To address this gap, we conducted a mixed‐methods study in a STEM classroom in western Canada.
Farzan Baradaran Rahimi, Beaumie Kim, Shima Dadkhahfard   +2 more
wiley   +1 more source

The Planes of Satellite Galaxies Problem, Suggested Solutions, and Open Questions

, 2018
Satellite galaxies of the Milky Way and of the Andromeda galaxy have been found to preferentially align in significantly flattened planes of satellite galaxies, and available velocity measurements are indicative of a preference of satellites in those ...
Pawlowski, Marcel S.
core   +1 more source

A Pressure Anomaly for HII Regions in Irregular Galaxies [PDF]

, 2000
The pressures of giant HII regions in 6 dwarf Irregular galaxies are a factor of ~10 larger than the average pressures of the corresponding galaxy disks, obtained from the stellar and gaseous column densities.
Becquaert J. F., Bottema R., Boulanger F., Broeils A., Bruce G. Elmegreen, Combes F., de Paolis F., de Paolis F., Deidre A. Hunter, Honma M., Kalberla P. M. W., Knapp G. R., Kuijken K., Lequeux J., Lequeux J., Loinard L., Olling R. P., Pfenniger D., Pfenniger D., Shostak G. S., Skillman E. D., Stavely-Smith L., van der Kruit P. C., van der Kruit P. C., van der Kruit P. C., Wilson T. L.   +25 more
core   +3 more sources

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, EarlyView.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

Robust Detection of Hot Intragroup Medium in Optically Selected, Poor Galaxy Groups by eROSITA

The Astrophysical Journal Letters
Over the last several decades, extensive research has been conducted on the baryon cycles within cosmic structures, encompassing a broad mass range from dwarf galaxies to galaxy clusters. However, a notable gap in understanding the cosmic baryon cycle is
Dawei Li, Taotao Fang, Chong Ge, Teng Liu, Lin He, Zhiyuan Li, Fabrizio Nicastro, Xiaohu Yang, Xiaoxia Zhang, Yun-Liang Zheng   +9 more
doaj   +1 more source

PERICLES: A Set of Empirical Rotational Isochrones Modeled on Cool Dwarfs in Open Clusters and Wide Binaries

Astronomische Nachrichten, Volume 347, Issue 1, January 2026.
ABSTRACT Isochrones, equal‐age curves, are widely used in astrophysics to estimate stellar ages. Classical stellar parameters are, however, very limited in their usability for main sequence stars because of their weak age‐dependence. Here, rotation period measurements provide complementary information.
David Gruner, Sydney A. Barnes
wiley   +1 more source

Galaxy Disruption in a Halo of Dark Matter

, 2003
The relics of disrupted satellite galaxies around the Milky Way and Andromeda have been found, but direct evidence of a satellite galaxy in the early stages of being disrupted has remained elusive.
Beasley, Michael, Bekki, Kenji, Brodie, Jean, Forbes, Duncan, Strader, Jay   +4 more
core   +1 more source

Cosmological Feedback from High-Redshift Dwarf Galaxies [PDF]

, 2004
We model how repeated supernova explosions in high-redshift dwarf starburst galaxies drive superbubbles and winds out of the galaxies. We compute the efficiencies of metal and mass ejection and energy transport from the galactic potentials, including the
Akimi Fujita, Andrea Ferrara, Avery Meiksin, Becker H. R., Chandrasekhar S., Cole S., Cole S., Efstathiou G., Gerritsen J. P. E., Hultman J., Kashlinsky A., Kompaneets A. S., Larson R. B., Mordecai‐Mark Mac Low, Navarro J. F., Navarro J. F., Saito M., Tomisaka K., Vedel H., White S. D. M., Yepes G.   +20 more
core   +2 more sources