Results 91 to 100 of about 394,003 (311)

Wandering globular clusters: the first dwarf galaxies in the universe?

, 2010
In the last decade we witness an advent of new types of dwarf stellar systems in cluding ultra-compact dwarfs, ultra-faint dwarf spheroidals, and exotic globular clusters, breaking the old simple paradigm for dwarf galaxies and globular clusters.
Adelman-McCarthy, Binggeli, Brodie, Börhinger, Côté, Durrell, H.S. Hwang, H.S. Park, Harris, Lee, Lee, Lee, M.G. Lee, Mackey, Muzzio, N. Hwang, S. Lim, Tamura, van den Bergh, West, White, Williams   +21 more
core   +1 more source

Stellar Abundances for Galactic Archaeology Database IV - Compilation of Stars in Dwarf Galaxies [PDF]

, 2017
We have constructed the database of stars in the local group using the extended version of the SAGA (Stellar Abundances for Galactic Archaeology) database that contains stars in 24 dwarf spheroidal galaxies and ultra faint dwarfs.
T. Suda, J. Hidaka, W. Aoki, Y. Katsuta, S. Yamada, M. Fujimoto, Y. Ohtani, M. Masuyama, K. Noda, K. Wada   +9 more
semanticscholar   +1 more source

Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data. [PDF]

Physical Review Letters, 2015
The dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are some of the most dark matter (DM) dominated objects known. We report on γ-ray observations of Milky Way dSphs based on six years of Fermi Large Area Telescope data processed with the ...
M. Ackermann, A. Albert, B. Anderson, W. Atwood, L. Baldini, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, E. Bissaldi, R. Blandford, E. Bloom, R. Bonino, E. Bottacini, T. Brandt, J. Bregeon, P. Bruel, R. Buehler, G. Caliandro, R. Cameron, R. Caputo, M. Caragiulo, P. Caraveo, C. Cecchi, E. Charles, A. Chekhtman, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, A. Cuoco, S. Cutini, F. D’Ammando, A. De Angelis, F. de Palma, R. Desiante, S. Digel, L. Di Venere, P. Drell, A. Drlica-Wagner, R. Essig, C. Favuzzi, S. Fegan, E. Ferrara, W. Focke, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, G. Gómez-Vargas, I. Grenier, S. Guiriec, M. Gustafsson, E. Hays, J. Hewitt, D. Horan, T. Jogler, G. Jóhannesson, M. Kuss, S. Larsson, L. Latronico, J. Li, L. Li, M. Llena Garde, F. Longo, F. Loparco, P. Lubrano, D. Malyshev, M. Mayer, M. Mazziotta, J. Mcenery, M. Meyer, P. Michelson, T. Mizuno, A. Moiseev, M. Monzani, A. Morselli, S. Murgia, É. Nuss, T. Ohsugi, M. Orienti, E. Orlando, J. Ormes, D. Paneque, J. Perkins, M. Pesce-Rollins, F. Piron, G. Pivato, T. Porter, S. Rainò, R. Rando, M. Razzano, A. Reimer, O. Reimer, S. Ritz, M. Sánchez-Conde, A. Schulz, N. Sehgal, C. Sgro’, E. Siskind, F. Spada, G. Spandre, P. Spinelli, L. Strigari, H. Tajima, H. Takahashi, J. Thayer, L. Tibaldo, D. Torres, E. Troja, G. Vianello, M. Werner, B. Winer, K. Wood, M. Wood, G. Zaharijas, S. Zimmer   +125 more
semanticscholar   +1 more source

Tools for Learning—Promoting Reflection for Student Teachers' Development of PCK

Journal of Research in Science Teaching, Volume 62, Issue 8, Page 1902-1922, October 2025.
ABSTRACT This paper investigates how the coherent integration of three different tools for reflection during a science methods course can contribute to student teachers' planning and enactment of science teaching, that is, their development of pedagogical content knowledge (PCK).
Pernilla Nilsson, Anne‐Marie Cederqvist   +1 more
wiley   +1 more source

The formation of ultra-compact dwarf galaxies and nucleated dwarf galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
Ultra compact dwarf galaxies (UCDs) have similar properties as massive globular clusters or the nuclei of nucleated galaxies. Recent observations suggesting a high dark matter content and a steep spatial distribution within groups and clusters provide new clues as to their origins.
Goerdt, T, Moore, B, Kazantzidis, S, Kaufmann, T, Maccio, A, Stadel, J   +5 more
openaire   +4 more sources

The Effect of Seductive Details on Knowledge Retention in Physics Videos: A Mixed Methods Study

Journal of Research in Science Teaching, Volume 62, Issue 8, Page 1923-1940, October 2025.
ABSTRACT Research reports that interesting but irrelevant information, seductive details, in teaching material can impede learning. In science education, the inclusion of historical narratives in lessons to promote interest has been recommended but may hinder learning.
Richard Brock, Liam Cini O'Dwyer, Ben Rogers   +2 more
wiley   +1 more source

Star Formation History of Dwarf Galaxies in Cosmological Hydrodynamic Simulations

Advances in Astronomy, 2010
We examine the past and current work on the star formation (SF) histories of dwarf galaxies in cosmological hydrodynamic simulations. The results obtained from different numerical methods are still somewhat mixed, but the differences are understandable ...
Kentaro Nagamine
doaj   +1 more source

Searching for TeV Dark Matter in Irregular Dwarf Galaxies with HAWC Observatory

The Astrophysical Journal, 2023
We present the results of dark matter (DM) searches in a sample of 31 dwarf irregular (dIrr) galaxies within the field of view of the HAWC Observatory.
R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A. Ayala Solares, R. Babu, E. Belmont-Moreno, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, E. De la Fuente, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, M. Durocher, J. C. Díaz-Vélez, C. Espinoza, K. L. Fan, N. Fraija, J. A. García-González, F. Garfias, M. M. González, J. P. Harding, S. Hernández-Cadena, D. Huang, F. Hueyotl-Zahuantitla, A. Iriarte, V. Joshi, S. Kaufmann, D. Kieda, J. Lee, H. León Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, K. Malone, O. Martinez, J. Martínez-Castro, J. A. Matthews, E. Moreno, M. Mostafá, A. Nayerhoda, L. Nellen, N. Omodei, Y. Pérez Araujo, E. G. Pérez-Pérez, C. D. Rho, D. Rosa-González, H. Salazar, D. Salazar-Gallegos, A. Sandoval, J. Serna-Franco, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Ureña-Mena, L. Villaseñor, X. Wang, E. Willox, H. Zhou, C. de León, The HAWC Collaboration, V. Gammaldi, E. Karukes, P. Salucci   +72 more
doaj   +1 more source

Searching for tidal tails - investigating galaxy harassment

, 2005
Galaxy harassment has been proposed as a physical process that morphologically transforms low surface density disc galaxies into dwarf elliptical galaxies in clusters.
Aboufadel, Babul, Bernstein, Binggeli, Butcher, Calcaneo-Roldan, Conselice, Dekel, Dressler, Efstathiou, Feldmeier, Ferguson, Gregg, Henriksen, J. I. Davies, Kambas, Klypin, Kogut, Mateo, Moore, Moore, Moore, Moore, Roberts, S. Roberts, S. Sabatini, Sabatini, Sabatini, Trentham, Trentham, Tully   +30 more
core   +1 more source

A Role for the Plastidial GPT2 Translocator in the Modulation of Lignin Biosynthesis

Plant, Cell &Environment, Volume 48, Issue 9, Page 6458-6472, September 2025.
ABSTRACT Engineering plants with reduced lignin content can result in pleiotropic growth defects. In stems of Arabidopsis plants with reduced expression of hydroxycinnamoyl CoA: shikimate hydroxycinnamoyl transferase (HCT), the plastidial glucose 6‐phosphate: phosphate co‐transporter GPT2 is highly overexpressed, and this coincides with reduced lignin ...
Aditi Subramani Raju, Abira Sahu, Chunliu Zhuo, Wayne K. Versaw, Richard A. Dixon   +4 more
wiley   +1 more source