Results 81 to 90 of about 11,545 (216)

STELLAR KINEMATICS OF THE ANDROMEDA II DWARF SPHEROIDAL GALAXY [PDF]

The Astrophysical Journal, 2012
14 pages, 10 figures, 4 tables, accepted for publication in ...
Ho, Nhung, Geha, M., Munoz, R. R., Guhathakurta, P., Kalirai, J., Gilbert, K. M., Tollerud, E., Bullock, J., Beaton, R. L., Majewski, S. R.   +9 more
openaire   +5 more sources

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

Why Are There Dwarf Spheroidal Galaxies?

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

Whiting 1: Confirmation of its accretion by the Milky Way

EPJ Web of Conferences, 2017
We investigate the association of Whiting 1 with the Sagittarius tidal stream by obtaining radial velocities for a sample of 101 stars observed with VIMOS.
Carballo-Bello Julio A., Corral-Santana Jesús M., Martínez-Delgado David, Sollima Antonio, Muñoz Ricardo R., Duffau Sonia, Catelan Márcio   +6 more
doaj   +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

Finding Faint Intermediate-mass Black Holes in the Radio Band

, 2004
We discuss the prospects for detecting faint intermediate-mass black holes, such as those predicted to exist in the cores of globular clusters and dwarf spheroidal galaxies.
A. Bouchard, A. K. Tzioumis, A. Pasquali, A.V. Fillipenko, C.G. Tinney, E. Gallo, G.A. Drukier, G.C. Bower, H. Baumgardt, H. Falcke, H.M. Johnston, J. Gerssen, J. Gerssen, J. Magorrian, J. Malzac, J.E. Greene, J.E. Grindlay, J.J. Condon, J.N. Bahcall, K. Gebhardt, L.C. Ho, M. Mateo, M. Ricotti, M.C. Miller, P.C. Freire, R. Narayan, R. P. Fender, R. Perna, R.P. Fender, S. Ichimaru, S.F. Portegies Zwart, T. J. Maccarone, T.E. Strohmayer, T.H. Markert, T.J. Maccarone, Z. Zang   +35 more
core   +2 more sources

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

A photometric and spectroscopic study of the new dwarf spheroidal galaxy in Hercules

, 2009
Our aim is to provide as clean and as complete a sample as possible of red giant branch stars that are members of the Hercules dSph galaxy. With this sample we explore the velocity dispersion and the metallicity of the system.
A. Koch, Anthony-Twarog, Battaglia, Belokurov, Belokurov, Belokurov, Belokurov, Bertin, Bonanos, Bond, Calamida, Carretta, Carretta, Clem, Cole, Coleman, D. Adén, D. B. Zucker, D. Faria, E. K. Grebel, Faria, G. F. Gilmore, Gallagher, Gilbert, Gilmore, Grebel, Helmi, Hilker, Howell, I. Lundström, Irwin, Jordi, Keller, Kirby, Kirby, Kleyna, Kniazev, Koch, Koch, Koch, Koch, Koch, Koch, Lanfranchi, Lind, M. I. Wilkinson, Marigo, Martin, N. W. Evans, Olsen, Olsen, Olsen, Olsen, Olsen, Olsen, Olszewski, Pasquini, Richtler, Robin, Rutledge, Rutledge, S. Feltzing, Schiavon, Schlegel, Schuster, Schuster, Shetrone, Siegel, Simon, Strigari, Tonry, Ural, V. Belokurov, VandenBerg, Walker, Walker, Walsh, Walsh, Zinn, Zucker, Zucker   +80 more
core   +1 more source

Chemical abundances in the nucleus of the Sagittarius dwarf spheroidal galaxy [PDF]

, 2017
We present Iron, Magnesium, Calcium, and Titanium abundances for 235 stars in the central region of the Sagittarius dwarf spheroidal galaxy (within 9.0 arcmin ~70 pc from the center) from medium-resolution Keck/DEIMOS spectra.
Bellazzini, M., Chapman, S. C., Ibata, R., Monaco, L., Mucciarelli, A., Romano, D.   +5 more
core   +4 more sources

The internal kinematics of dwarf spheroidal galaxies [PDF]

EAS Publications Series, 2006
8 pages, 5 figs. Invited review in Proceedings of XXIst IAP Colloquium, "Mass Profiles & Shapes of Cosmological Structures" (Paris, 4-9 July 2005), eds G.A. Mamon, F. Combes, C. Deffayet, B. Fort (Paris: EDP Sciences)
Wilkinson, M. I., Kleyna, Jan, Evans, N. W., Gilmore, G., Read, J. I., Koch, Andreas, Grebel, E. K., Irwin, M.   +7 more
openaire   +2 more sources