Results 71 to 80 of about 399,477 (315)

UGC 7639: A Dwarf Galaxy in the Canes Venatici I Cloud

Advances in Astronomy, 2015
We want to get insight into the formation mechanism and the evolution of UGC 7639, a dwarf galaxy in the Canes Venatici I Cloud (CVnIC). We used archival multiwavelength data to constrain its global properties. Ultraviolet images show that UGC 7639 inner
L. M. Buson, D. Bettoni, P. Mazzei, G. Galletta   +3 more
doaj   +1 more source

The M 101 group complex: new dwarf galaxy candidates and spatial structure [PDF]

, 2017
Context. The fine details of the large-scale structure in the local Universe provide important empirical benchmarks for testing cosmological models of structure formation. Dwarf galaxies are key object for such studies. Aims.
O. Muller, Roberto Scalera, B. Binggeli, H. Jerjen   +3 more
semanticscholar   +1 more source

The M dwarf problem in the Galaxy [PDF]

Monthly Notices of the Royal Astronomical Society, 2012
To be published in Monthly Notices of the RAS by the Royal Astronomical Society and Blackwell Publishing.
Vincent M. Woolf, Andrew A. West
openaire   +4 more sources

APOGEE Chemical Abundances of the Sagittarius Dwarf Galaxy [PDF]

, 2017
The Apache Point Observatory Galactic Evolution Experiment provides the opportunity of measuring elemental abundances for C, N, O, Na, Mg, Al, Si, P, K, Ca, V, Cr, Mn, Fe, Co, and Ni in vast numbers of stars.
S. Hasselquist, M. Shetrone, V. Smith, J. Holtzman, A. McWilliam, J. Fernández-Trincado, T. Beers, S. Majewski, D. Nidever, B. Tang, P. Tissera, E. F. Alvar, C. A. Prieto, C. A. Prieto, Andres Almeida, B. Anguiano, G. Battaglia, G. Battaglia, L. Carigi, G. D. Inglada, P. Frinchaboy, D. A. García-Hernández, D. A. García-Hernández, D. Geisler, D. Minniti, V. Placco, M. Schultheis, J. Sobeck, S. Villanova   +28 more
semanticscholar   +1 more source

NIHAO XV: the environmental impact of the host galaxy on galactic satellite and field dwarf galaxies [PDF]

Monthly notices of the Royal Astronomical Society, 2018
We study the impact of the host on dwarf galaxy properties using four new Milky Way-like, ultra high-resolution simulations, ($N_{\rm part} >10^7$) from the NIHAO project. We split our sample in satellite ($R 2.5 R_{\rm 200}$) galaxies.
T. Buck, A. Macciò, A. Dutton, A. Obreja, Jonas Frings   +4 more
semanticscholar   +1 more source

Warp or lag? The ionized and neutral hydrogen gas in the edge-on dwarf galaxy UGC 1281 [PDF]

, 2011
The properties of gas in the halos of galaxies constrain global models of the interstellar medium. Kinematical information is of particular interest since it is a clue to the origin of the gas. Until now mostly massive galaxies have been investigated for
Barbieri, Barnabè, Boomsma, Bregman, Cappellari, Collins, Côté, de Vaucouleurs, de Zeeuw, Fraternali, G. H. Heald, García-Ruiz, Heald, Heald, Hoeft, Hummel, Kamphuis, Karachentsev, Kelz, Kuzio, Lee, Makarova, Matthews, Oosterloo, P. C. van der Kruit, P. Kamphuis, Pilyugin, Puche, R. F. Peletier, Rossa, Sancisi, Sancisi, Schaap, Shapiro, Sofue, Swaters, Swaters, van der Kruit, van Zee, van Zee, Westmeier   +40 more
core   +3 more sources

Discovery of Diffuse Dwarf Galaxy Candidates around M101 [PDF]

, 2017
We have conducted a search of a 9 deg2 region of the Canada–France–Hawaii-Telescope Legacy Survey around the Milky Way analog M101 (D ∼ 7 Mpc), in order to look for previously unknown low-surface-brightness galaxies.
P. Bennet, D. Sand, D. Crnojevi'c, K. Spekkens, D. Zaritsky, A. University, U. Arizona, Royal Military College of Canada   +7 more
semanticscholar   +1 more source

On the dynamics of the Sagittarius dwarf galaxy [PDF]

Monthly Notices of the Royal Astronomical Society, 1995
We use numerical simulations to test the feasibility of the suggestion by Ibata et al. (1994) that the excess population of stars which they discovered in the Sagittarius region may be the disrupted remains of a dwarf spheroidal galaxy. We find that a Fornax-like model for the pre-disruption system can indeed reproduce the data.
Hector Velazquez, Simon D. M. White
openaire   +2 more sources

R-process enrichment from a single event in an ancient dwarf galaxy [PDF]

Nature, 2015
Elements heavier than zinc are synthesized through the rapid (r) and slow (s) neutron-capture processes. The main site of production of the r-process elements (such as europium) has been debated for nearly 60 years.
A. Ji, A. Frebel, A. Chiti, J. Simon
semanticscholar   +1 more source

Dust Streamers in the Virgo Galaxy M86 from Ram Pressure Stripping of its Companion VCC 882 [PDF]

, 2000
The giant elliptical galaxy M86 in Virgo has a ~28 kpc long dust trail inside its optical halo that points toward the nucleated dwarf elliptical galaxy, VCC 882. The trail seems to be stripped material from the dwarf. Extinction measurements suggest that
Bender R., Binggeli B., Bruce G. Elmegreen, Caon N., Debra Meloy Elmegreen, Fabian A. C., Frederick R. Chromey, Katsiyannis A. C., Kotanyi C. G., Laing R. A., Michael S. Fine, Nulsen P. E. J., Petitjean P., Rangarajan F. V. N., Takeda H., Thomas H., van Driel W., Vollmer B.   +17 more
core   +2 more sources