Results 171 to 180 of about 34,781 (306)

Subaru Telescope -History, active/adaptive optics, instruments, and scientific achievements. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci, 2021
Iye M.
europepmc   +1 more source

A high-resolution VLT/FLAMES study of individual stars in the centre of the Fornax dwarf spheroidal galaxy (Corrigendum) [PDF]

, 2018
B. Letarte, V. Hill, Eline Tolstoy, P. Jablonka, Matthew Shetrone, Kim A. Venn, M. Spite, M. J. Irwin, G. Battaglia, A. Helmi, F. Primas, P. François, A. Kaufer, T. Szeifert, N. Arimoto, Kunihiko Sadakane   +15 more
openalex   +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
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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

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

The predicted metallicity distribution of stars in dwarf spheroidal galaxies [PDF]

, 2004
Gustavo A. Lanfranchi, F. Matteuccí
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Variable Stars in Dwarf Spheroidal Galaxies [PDF]

International Astronomical Union Colloquium, 1973
Interest in dwarf spheroidal galaxies is motivated by a number of reasons; an important one on the occasion of this colloquium is the abundance of variable stars. The theory of stellar evolution and stellar pulsations is now able to predict from theoretical considerations characteristic properties of variable stars in the colour-magnitude diagram (Iben,
openaire   +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

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

Dwarf spheroidal galaxies and the mass of the neutrino

The Astrophysical Journal, 1992
It is argued that neutrinos cannot provide the missing mass in Draco and Ursa Minor, since for reasonable neutrino mass (m v ∼ 30 eV) phase-space limits would then require very large core radii (∼ 10 kpc) and masses (∼ 4 × 10 11 M ⊙ ) for these dwarfs, which would make their dynamical friction decay times in the Galactic halo significantly shorter ...
Ortwin E. Gerhard, David N. Spergel
openaire   +1 more source