Results 131 to 140 of about 1,735 (217)

The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. VIII. A Census of Long-period Variable Stars across the Andromeda Dwarf Satellite System

The Astrophysical Journal
We present a comprehensive catalog, in the Sloan i and Harris V filters, of long-period variable (LPV) stars in the spheroidal dwarf satellites of the Andromeda galaxy based on a dedicated survey for variable stars in Local Group dwarf systems.
Hedieh Abdollahi, Atefeh Javadi, Jacco Th. van Loon, Iain McDonald, Mahdi Abdollahi, Elham Saremi, Habib G. Khosroshahi, László Molnár, Hamidreza Mahani   +8 more
doaj   +1 more source

Elemental Abundances in And XIX from Coadded Spectra

The Astrophysical Journal
With a luminosity similar to that of Milky Way dwarf spheroidal systems like Sextans, but a spatial extent similar to that of ultra-diffuse galaxies, Andromeda (And) XIX is an unusual satellite of M31. To investigate the origin of this galaxy, we measure
L. R. Cullinane, Karoline M. Gilbert, Ivanna Escala, J. Leigh Wojno, Evan N. Kirby, Kateryna A. Kvasova, Erik Tollerud, Michelle L. M. Collins, R. Michael Rich   +8 more
doaj   +1 more source

Supernova-driven outflows and chemical evolution of dwarf spheroidal galaxies. [PDF]

Proc Natl Acad Sci U S A, 2012
Qian YZ, Wasserburg GJ.
europepmc   +1 more source

Dark Matter searches targeting Dwarf Spheroidal Galaxies with the Fermi Large Area Telescope [PDF]

, 2015
In this thesis I present our recent work on gamma-ray searches for dark matter with the Fermi Large Area Telescope (Fermi-LAT). We have targeted dwarf spheroidal galaxies since they are very dark matter dominated systems, and we have developed a novel ...
Garde Lindholm, Maja
core  

Dark Matter searches targeting Dwarf Spheroidal Galaxies with the Fermi Large Area Telescope [Elektronisk resurs] [PDF]

, 2015
In this thesis I present our recent work on gamma-ray searches for dark matter with the Fermi Large Area Telescope (Fermi-LAT). We have targeted dwarf spheroidal galaxies since they are very dark matter dominated systems, and we have developed a novel ...
Conrad, Jan,, Read, Alexander L.,, Garde Lindholm, Maja,   +2 more
core  

The long-term evolution of ultra-faint dwarf galaxies and observational implications

Astronomy & Astrophysics
Context. In the Local Group, dwarf spheroidal galaxies and ultra-faint dwarf galaxies (UFDs) exhibit large velocity dispersions. These values are generally attributed to the presence of substantial amounts of dark matter (DM), in line with predictions of
Flammini Dotti Francesco, Capuzzo-Dolcetta Roberto, Carraro Giovanni, Trani Alessandro Alberto, Spurzem Rainer   +4 more
doaj   +1 more source

Evaluating the Potential to Constrain Dark Matter Annihilation with Fermi-LAT Observations of Ultrafaint Compact Stellar Systems

The Astrophysical Journal Letters
Recent results from numerical simulations and models of galaxy formation suggest that recently discovered ultrafaint compact stellar systems (UFCSs) in the halo of the Milky Way (MW) may be some of the smallest and faintest galaxies. If this is the case,
Antonio Circiello, Alex McDaniel, Alex Drlica-Wagner, Christopher Karwin, Marco Ajello, Mattia Di Mauro, Miguel Á. Sánchez-Conde   +6 more
doaj   +1 more source

Constraints on Ultraheavy Dark Matter Properties from Dwarf Spheroidal Galaxies with LHAASO Observations [PDF]

In this Letter we try to search for signals generated by ultraheavy dark matter at the Large High Altitude Air Shower Observatory (LHAASO) data. We look for possible y rays by dark matter annihilation or decay from 16 dwarf spheroidal galaxies in the ...
Huang, T., Tang, R., Wang, J., Guo, F., Xin, Y., Chen, E., Jia, H., Liu, J., Zeng, W., Wang, Z., Bukevich, A., Zhang, P., Cui, X., Semikoz, D., Bi, Y., Ma, X., Zhu, H., Geng, L., You, X., Huang, D., Jiang, X., Li, B., Min, Z., Qi, M., Hasan, M., Wang, Y., Hu, S., Zheng, F., Fan, Y., Li, S., Zhang, S., Lv, H., Wu, C., Bao, Y., Feng, C., Bi, X., Chen, T., Wang, L., Dai, H., Li, C., Ruffolo, D., Pei, Z., Tian, W., Zhong, W., Takata, J., Zhang, B., Danzengluobu, Wu, S., Chang, J., Guo, X., Cao, Q., Feng, S., Liang, Y., Karpikov, I., X. Q., D., Zhou, X., Cheng, N., Qiao, B., Kuleshov, D., Liu, M., Zeng, T., Zhang, R., Wang, K., Zhu, F., Chen, S., Yuan, Q., Yang, W., Li, D., Xiang, G., Hu, Q., Dai, Z., Luo, Y., Cui, S., Ma, B., Dai, B., He, Y., Yang, F., Axikegu, Cheng, Y., Hor, Y., Wu, Q., Mitthumsiri, W., Zha, M., Chen, A., Zhou, P., Neronov, A., Stepanov, V., Chen, Q., Wen, T., Xia, J., He, J., Stenkin, Y., Jin, M., Jia, K., Yu, Y., Wang, P., Zhao, S., Mu, H., Zhu, C., Su, Y., Saeed, M., Xue, L., Zhang, F., Yue, H., Hou, X., Yang, C., Tang, Q., Zhou, R., Sheng, X., Zhu, B., Wei, D., Zeng, H., Gao, W., Sun, Q., Tam, P., Zhao, B., Zhou, B., Shao, L., Kurinov, K., Liu, R., Wang, R., Yin, N., Zhou, M., Lin, S., Li, Y., Ji, X., Yang, R., Zhang, Y., Chen, M., Liu, B., Aharonian, F. ; https://orcid.org/, Sun, X., Tang, Z., Zhang, H., Shu, F., Wei, J., Li, Z., Nan, Y., Liu, S., Zhang, X., Zhao, X., Fang, J., Chen, L., Xiao, G., Gao, Q., Han, Y., Ge, M., Li, J., Liu, C., Xiong, D., Cao, Z., Hou, C., Gao, B., Song, H., Xi, S., Cui, M., Giacinti, G., Yin, L., Wang, C., Wei, Y., Li, K., Ma, L., Liu, D., Zhang, J., Hou, B., Sun, D., Gao, C., Hu, H., Luo, Q., Xu, W., Yan, J., Feng, L., Zuo, X., He, H., Xu, R., Jiang, K., Ou, L., Huang, X., Kang, M., Yao, Z., Xiong, Z., Fan, J., Gou, Q., Yan, D., Zhang, L., Feng, Y., Wu, Y., Y. X., B., Wu, H., Cao, W., Chen, Y., Mao, J., Yan, T., Liu, W., Huang, Y., Yang, M., Gu, M., Gabici, S., Zhou, H., Wu, X., Li, F., Bastieri, D., Guo, Y., Xing, Y., Chen, H., Zhao, L., Gong, G., Raza, A., Pattarakijwanich, P., Cui, Y., Li, W., Qi, J., Liang, E., Fang, K., Zou, Y., Wang, H., Shchegolev, O., Yang, L., Xiao, D., Xu, D., Liu, H., Sun, Z., Wang, X., Bian, W., Huang, W., Duan, K., Qin, J., Wang, G., Liu, Y., Li, X., Zhou, J., Feng, H., Zhu, K., Yao, Y., Sáiz, A., Jiang, Z., Wang, W., Li, H., Zhao, J., Feng, X., You, Z.   +240 more
core   +1 more source

On the origin of the optical and near-infrared extragalactic background light. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci, 2020
Matsumoto T.
europepmc   +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