Results 111 to 120 of about 12,845 (268)

Search for gamma-ray emission from the nearby dwarf spheroidal galaxies with 9 years of Fermi-LAT data

, 2018
In this work, we search for $\gamma$-ray emission from the directions of some nearby Milky Way dwarf spheroidal galaxies (dSphs) and candidates with the publicly-available Pass 8 data of Fermi-LAT.
Chang, Jin, Duan, Kai-Kai, Fan, Yi-Zhong, Feng, Lei, Li, Shang, Li, Xiang, Liang, Yun-Feng, Liao, Neng-Hui, Shen, Zhao-Qiang, Xia, Zi-Qing, Yuan, Qiang   +10 more
core   +1 more source

Modeling wave dark matter in dwarf spheroidal galaxies

Journal of Physics: Conference Series, 2015
22 pages, 10 figures, 3 ...
Bray, Hubert L., Parry, Alan R.
openaire   +2 more sources

Little Bear’s pulsating stars: Variable star census of UMi dSph Galaxy

EPJ Web of Conferences, 2017
Recent observations and a photometric search for variable stars in the Ursa Minor dwarf spheroidal galaxy (UMi dSph) are presented. Our observations were taken at Apache Point Observatory in 2014 and 2016 using the 0.5m ARCSAT telescope and the West ...
Kinemuchi K., Jeffery E., Kuehn C., Grabowski K., Nemec J.   +4 more
doaj   +1 more source

Implications of elemental abundances in dwarf spheroidal galaxies [PDF]

Astronomy & Astrophysics, 2006
Unusual elemental abundance patterns observed for stars belonging to nearby dwarf spheroidal (dSph) galaxies are discussed. Analysis of the [alpha/H] vs. [Fe/H] diagrams where alpha represents Mg or average of alpha-elements reveals that Fe from Type Ia supernovae (SNe Ia) does not contribute to the stellar abundances in the dSph galaxies where the ...
openaire   +2 more sources

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

From Supermassive Black Holes to Dwarf Elliptical Nuclei: a Mass Continuum

, 2006
Considerable evidence suggests that supermassive black holes reside at the centers of massive galactic bulges. At a lower galactic mass range, many dwarf galaxies contain extremely compact nuclei that structurally resemble massive globular clusters.
Elizabeth H. Wehner, Ferrarese L., Kormendy J., Maccarone T. J., van der Marel R. P., William E. Harris   +5 more
core   +1 more source

Faint Stars in a Faint Galaxy. II. The Low-mass Stellar Initial Mass Function of the Boötes I Ultrafaint Dwarf Spheroidal Galaxy [PDF]

, 2022
Carrie Filion, I. Platais, Rosemary F. Ġ. Wyse, V. Kozhurina-Platais   +3 more
openalex   +1 more source

Why Are There Dwarf Spheroidal Galaxies?

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

Machine Learning Techniques to Distinguish Giant Stars from Dwarf Stars Using Only Photometry—Pushing Redward

The Astronomical Journal
We present our photometric method, which combines Subaru/Hyper Suprime-Cam N B 515, g -band, and i- band filters to distinguish giant stars in Local Group galaxies from Milky Way dwarf contamination.
Keyi Ding, Carrie Filion, Rosemary F.G. Wyse, Evan N. Kirby, Itsuki Ogami, Masashi Chiba, Yutaka Komiyama, László Dobos, Alexander S. Szalay   +8 more
doaj   +1 more source

Further Evidence for a Merger Origin for the Thick Disk: Galactic Stars Along Lines-of-sight to Dwarf Spheroidal Galaxies

, 2005
The history of the Milky Way Galaxy is written in the properties of its stellar populations. Here we analyse stars observed as part of surveys of local dwarf spheroidal galaxies, but which from their kinematics are highly probable to be non-members.
A. Koch, E. K. Grebel, Gerard Gilmore, Gilmore G., Jan T. Kleyna, John E. Norris, M. I. Wilkinson, N. W. Evans, Rosemary F. G. Wyse, Unavane M.   +9 more
core   +2 more sources