Results 131 to 140 of about 34,432 (305)

Why Are There Dwarf Spheroidal Galaxies?

The Astrophysical Journal, 2001
4 ApJ pages, submitted to ApJ ...
openaire   +2 more sources

Sagittarius: The Nearest Dwarf Galaxy [PDF]

, 1995
We have discovered a new Galactic satellite galaxy in the constellation of Sagittarius. The Sagittarius dwarf galaxy is the nearest galaxy known, subtends an angle of $> 10$ degrees on the sky, lies at a distance of $24 \kpc$ from the Sun, $\sim 16 \kpc$
Gilmore, G., Ibata, Rodrigo, Irwin, M. J.   +2 more
core   +2 more sources

Searching for dark-matter induced neutrino signals in dwarf spheroidal galaxies using 10 years of IceCube public data [PDF]

, 2023
Xue-Kang Guo, Yi-Fei Lü, Yongbo Huang, Rong-Lan Li, Ben-Yang Zhu, Yun-Feng Liang   +5 more
openalex   +1 more source

Chemical evolution of Local Group dwarf galaxies in a cosmological context - I. A new modelling approach and its application to the Sculptor dwarf spheroidal galaxy [PDF]

, 2013
We present a new approach for chemical evolution modelling, specifically designed to investigate the chemical properties of dwarf galaxies in a full co smological framework.
D. Romano, E. Starkenburg
semanticscholar   +1 more source

An abundance study of red-giant-branch stars in the Hercules dwarf spheroidal galaxy [PDF]

, 2010
Using high-resolution spectroscopy, we provide a determination of [Fe/H] and [Ca/H] for confirmed red-giant branch member stars of the Hercules dwarf spheroidal galaxy.
A. Koch, Adén, Adén, Alonso, Andrievsky, Aoki, Asplund, Belokurov, Bensby, Burris, Calamida, Calamida, Clem, Cohen, D. Adén, Dotter, E. K. Grebel, Edvardsson, Feltzing, Frebel, Frebel, Fulbright, Fulbright, Geisler, Gilmore, Gratton, Gratton, Gratton, Grebel, Grevesse, Gustafsson, Hanson, Helmi, Ivans, Ivans, Johnson, K. Eriksson, Kirby, Kirby, Kirby, Koch, Koch, Koch, Koch, Kupka, Kupka, Lind, M. I. Wilkinson, Martin, Matteucci, McWilliam, McWilliam, McWilliam, Nissen, Norris, Pasquini, Piskunov, Prochaska, Reddy, Ryabchikova, Ryan, S. Feltzing, Sadakane, Schlegel, Schörck, Shetrone, Shetrone, Simon, Simon, Starkenburg, Stephens, Tollerud, Tolstoy, VandenBerg, Venn, Walker, Woosley, Zucker   +77 more
core   +1 more source

Neutron-capture element deficiency of the Hercules dwarf spheroidal galaxy [PDF]

, 2013
We present an assessment of the barium abundance ratios for red giant member stars in the faint Hercules dwarf spheroidal (dSph) galaxy. Our results are drawn from intermediate-resolution FLAMES/GIRAFFE spectra around the Ba II 6141.71 angstrom ...
A. Koch, S. Feltzing, D. Adén, F. Matteucci   +3 more
semanticscholar   +1 more source

A UNIVERSAL MASS PROFILE FOR DWARF SPHEROIDAL GALAXIES?

The Astrophysical Journal, 2009
Replacement provides corrections to values of half-light radii adopted for eight classical dSphs, including revised tables and figures (conclusions are unchanged).
Walker, Matthew G., Mateo, Mario, Olszewski, Edward W., Peñarrubia, Jorge, Evans, N. Wyn, Gilmore, Gerard   +5 more
openaire   +2 more sources

Dark Matter Searches with HAWC

, 2017
The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a wide field-of-view observatory sensitive to 0.5 TeV - 100 TeV gamma-rays and cosmic-rays in the State of Puebla, Mexico at an altitude of 4100m.
Smith, Andrew J., Yapici, Tolga
core   +1 more source

The DECam MAGIC Survey: A Wide-field Photometric Metallicity Study of the Sculptor Dwarf Spheroidal Galaxy

The Astrophysical Journal
The metallicity distribution function (MDF) and internal chemical variations of a galaxy are fundamental to understand its formation and assembly history.
F. O. Barbosa, A. Chiti, G. Limberg, A. B. Pace, W. Cerny, S. Rossi, J. L. Carlin, G. S. Stringfellow, V. M. Placco, K. Atzberger, J. A. Carballo-Bello, A. Chaturvedi, Y. Choi, D. Crnojević, A. Drlica-Wagner, A. P. Ji, N. Kallivayalil, C. E. Martínez-Vázquez, G. E. Medina, N. E. D. Noël, A. H. Riley, D. J. Sand, A. K. Vivas, C. R. Bom, P. S. Ferguson, B. Mutlu-Pakdil, M. Navabi, J. D. Sakowska, A. Zenteno, (MAGIC & DELVE Collaborations)   +29 more
doaj   +1 more source

The Dark Matter Content of Milky Way Dwarf Spheroidal Galaxies: Draco, Sextans, and Ursa Minor

The Astrophysical Journal
The Milky Way Survey of the Dark Energy Spectroscopic Instrument (DESI) has so far observed three classical dwarf spheroidal galaxies (dSphs): Draco, Sextans, and Ursa Minor.
Hao Yang, Wenting Wang, Ling Zhu, Ting S. Li, Sergey E. Koposov, Jiaxin Han, Songting Li, Rui Shi, Monica Valluri, Alexander H. Riley, Arjun Dey, Constance Rockosi, Carles G. Palau, Jessica Nicole Aguilar, Steven Ahlen, David Brooks, Todd Claybaugh, Andrew Cooper, Axel de la Macorra, Peter Doel, Simone Ferraro, Jaime E. Forero-Romero, Enrique Gaztañaga, Satya Gontcho A Gontcho, Alma Xochitl Gonzalez Morales, Gaston Gutierrez, Julien Guy, Klaus Honscheid, Mustapha Ishak, Dick Joyce, Robert Kehoe, Theodore Kisner, Namitha Kizhuprakkat, Anthony Kremin, Ofer Lahav, Martin Landriau, Laurent Le Guillou, Gustavo E. Medina, Aaron Meisner, Ramon Miquel, Nathalie Palanque-Delabrouille, Francisco Prada, Ignasi Pérez-Ràfols, Graziano Rossi, Eusebio Sanchez, David Schlegel, Michael Schubnell, Joseph Harry Silber, David Sprayberry, Gregory Tarlé, Benjamin Alan Weaver, Rongpu Zhou, Hu Zou   +52 more
doaj   +1 more source