Results 131 to 140 of about 12,845 (268)

Ultradiffuse Galaxies—A Distinct Population? Dwarf Galaxies in the Coma Cluster and A262 from Deep u′–g′–r′ Wendelstein Imaging Data

The Astrophysical Journal Supplement Series
In this study, we compare the structural parameters of ultradiffuse galaxies (UDGs) to those of other dwarf galaxies and investigate whether UDGs form a distinct population.
Raphael Zöller, Matthias Kluge, Benjamin Staiger, Ralf Bender   +3 more
doaj   +1 more source

Dark matter interpretation of the Fermi-LAT observations toward the outer halo of M31. [PDF]

Phys Rev D, 2021
Karwin CM, Murgia S, Moskalenko IV, Fillingham SP, Burns AK, Fieg M.   +5 more
europepmc   +1 more source

Dark Matter And The Habitability of Planets

, 2012
In many models, dark matter particles can elastically scatter with nuclei in planets, causing those particles to become gravitationally bound. While the energy expected to be released through the subsequent annihilations of dark matter particles in the ...
Hooper, Dan, Steffen, Jason H.
core   +1 more source

A Census of Dwarf Galaxy Satellites around LMC-mass Galaxy NGC 2403

The Astrophysical Journal
We present the first comprehensive census of the satellite population around a Large Magellanic Cloud stellar-mass galaxy, as part of the Magellanic Analog Dwarf Companions and Stellar Halos (MADCASH) survey. We have surveyed NGC 2403 ( D = 3.0 Mpc) with
Jeffrey L. Carlin, David J. Sand, Burçin Mutlu-Pakdil, Denija Crnojević, Amandine Doliva-Dolinsky, Christopher T. Garling, Annika H. G. Peter, Jean P. Brodie, Duncan A. Forbes, Jonathan R. Hargis, Aaron J. Romanowsky, Kristine Spekkens, Jay Strader, Beth Willman   +13 more
doaj   +1 more source

Space Motions of the Dwarf Spheroidal Galaxies Draco and Sculptor Based on HST Proper Motions with a ∼10 yr Time Baseline [PDF]

, 2017
Sangmo Tony Sohn, Ekta Patel, Gurtina Besla, Roeland P. van der Marel, James S. Bullock, Louis E. Strigari, Glenn van de Ven, Matt G. Walker, Andrea Bellini   +8 more
openalex   +1 more source

The Kinematics of Dwarf Spheroidal Galaxies

, 1997
I review observational data on the kinematic properties of dwarf spheroidal galaxies in the halo of the Milky Way and beyond. The present data confirm previous claims that these galaxies have unusually large central velocity dispersions. `Simple' sources of bias such as binary stars, internal atmospheric motions, measurement errors, and small sample ...
openaire   +2 more sources

An Extremely Carbon-rich, Extremely Metal-poor Star in the Segue 1 System

, 2010
We report the analysis of high-resolution, high-S/N spectra of an extremely metal-poor, extremely C-rich red giant, Seg 1-7, in the Segue 1 system - described in the literature alternatively as an unusually extended globular cluster or an ultra-faint ...
Abazajian, Aoki, Aoki, Aoki, Aoki, Belokurov, Carollo, Castelli, Christlieb, Demarque, Frebel, Geha, Gratton, Lucatello, Martin, Nomoto, Norris, Norris, Norris, Norris, Norris, Preston, Simon, Unavane   +23 more
core   +1 more source

Chemical evolution models for local group dwarf spheroidal galaxies: the evolution of Fe-peak elements [PDF]

, 2009
Gustavo A. Lanfranchi, F. Matteuccí, G. Cescutti   +2 more
openalex   +1 more source

The Sensitivity of HAWC to High-Mass Dark Matter Annihilations

, 2014
The High Altitude Water Cherenkov (HAWC) observatory is a wide field-of-view detector sensitive to gamma rays of 100 GeV to a few hundred TeV. Located in central Mexico at 19 degrees North latitude and 4100 m above sea level, HAWC will observe gamma rays
Abazajian, K. N., Abeysekara, A. U., Alfaro, R., Alvarez, C., Alvarez, J. D., Arceo, R., Arteaga-Velazquez, J. C., Barber, A. S., Baughman, B. M., Bautista-Elivar, N., Belmont, E., BenZvi, S. Y., Berley, D., Braun, J., Caballero-Lopez, R. A., Caballero-Mora, K. S., Carraminana, A., Castillo, M., Cotti, U., Cotzomi, J., de la Fuente, E., De Leon, C., DeYoung, T., Diaz-Cruz, L., Diaz-Velez, J. C., Dingus, B. L., DuVernois, M. A., E., S. F., Ellsworth, R. W., Fiorino, D. W., Fraija, N., Galindo, A., Garfias, F., Gonzalez, J. Becerra, Gonzalez, M. M., Goodman, J. A., Grabski, V., Gussert, M., Hampel-Arias, Z., Harding, J. P., Hernandez, R. Diaz, Huentemeyer, P., Hui, C. M., Imran, A., Iriarte, A., Karn, P., Kieda, D., Kunde, G. J., Lara, A., Lauer, R. J., Lee, W. H., Lennarz, D., Linares, E. C., Linnemann, J. T., Longo, M., Luna-Garcia, R., Marinelli, A., Martinez, H., Martinez, O., Martinez-Castro, J., Matthews, J. A. J., McEnery, J., Miranda-Romagnoli, P., Moreno, E., Mostafa, M., Nellen, L., Newbold, M., Noriega-Papaqui, R., Oceguera-Becerra, T., Patricelli, B., Pelayo, R., Perez-Perez, E. G., Pretz, J., Riviere, C., Rosa-Gonzalez, D., Rosales, M. Bonilla, Ryan, J., Salazar, H., Salesa, F., Sandoval, A., Schneider, M., Silich, S., Sinnis, G., Smith, A. J., Solares, H. A. Ayala, Springer, R. W., Taboada, I., Toale, P. A., Tollefson, K., Torres, E. Mendoza, Torres, I., Ukwatta, T. N., Vargas, H. Leon, Villasenor, L., Weisgarber, T., Westerhoff, S., Wisher, I. G., Wood, J., Woodle, K. Sparks, Yodh, G. B., Younk, P. W., Zaborov, D., Zepeda, A., Zhou, H.   +103 more
core   +1 more source

VLT/UVES Abundances in Four Nearby Dwarf Spheroidal Galaxies. II. Implications for Understanding Galaxy Evolution [PDF]

, 2003
Eline Tolstoy, Kim A. Venn, Matthew Shetrone, Francesca Primas, Vanessa Hill, Andreas Kaufer, Thomas Szeifert   +6 more
openalex   +1 more source