Results 21 to 30 of about 10,200 (231)
Dwarf Spheroidal Galaxies [PDF]
Symposium - International Astronomical Union, 1994 Dwarf Spheroidal (dSph) galaxies are the faintest baryonic systems recognized as galaxies. Understanding the structure and stellar populations of these systems is critical for the modelling of their formation and evolution, and by extension, for understanding the general problem of galaxy formation ...
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Chemical and kinematical evolution in nearby dwarf spheroidal galaxies [PDF]
, 2006 Dwarf spheroidal (dSph) galaxies are the least massive and luminous objects known to exist. These galaxies are often considered as the fossil building blocks of massive systems predicted by some cosmological models.
Koch, Andreas
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Globular Clusters and the Halos of Dwarf Galaxies
Galaxies, 2017 Many dwarf galaxies have disproportionately rich globular cluster (GC) systems for their luminosities. Moreover, the GCs tend to be preferentially associated with the most metal-poor stellar populations in their parent galaxies, making them attractive ...
Søren S. Larsen
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NUCLEI OF EARLY-TYPE DWARF GALAXIES: ARE THEY PROGENITORS OF ULTRACOMPACT DWARF GALAXIES? [PDF]
The Astrophysical Journal, 2010 To address the question of whether the so-called ultracompact dwarf galaxies (UCDs) are the remnant nuclei of destroyed early-type dwarf galaxies (dEs), we analyze the stellar population parameters of the nuclei of 34 Virgo dEs, as well as 10 Virgo UCDs, including one that we discovered and which we report on here.
Sanjaya Paudel +2 more
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The Relationship between Slope and Luminosity [PDF]
Kirkuk Journal of Science, 2010 In this study, a sample of galaxies has been adopted. It consists of 112 elliptical galaxies, among them were 56 dwarf elliptical galaxies, which belong to virgo cluster, 37 normal galaxies and 19 bright galaxies. Also, surface brightness profiles fitted
Mohsen H. Ali AL-Khafajy
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Characteristic size and mass of galaxies in the Bose–Einstein condensate dark matter model
Physics Letters B, 2016 We study the characteristic length scale of galactic halos in the Bose–Einstein condensate (or scalar field) dark matter model. Considering the evolution of the density perturbation we show that the average background matter density determines the ...
Jae-Weon Lee
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The Astronomy and Astrophysics Review, 1994 63p, uuencoded compressed postscript, 2/8 figs included, A&A Review in press, request paper copies from ferguson@stsci.edu, STScI ...
Ferguson, Henry C., Binggeli, Bruno
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Giant halos in dwarf irregular galaxies vs. dwarf elliptical galaxies [PDF]
Proceedings of the International Astronomical Union, 2005 We present a discovery of a giant stellar halo in NGC 6822, a dwarf irregular galaxy in the Local Group. This halo is mostly made of old red giants, showing striking features: 1) it is several times larger than the main body of the galaxy seen in the optical images, and 2) it is elongated in the direction almost perpendicular to the HI disk of NGC 6822.
Lee, Myung Gyoon, Hwang, Narae
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Dwarf Galaxies in Voids: Dark Matter Halos and Gas Cooling
Advances in Astronomy, 2010 Galaxy surveys have shown that luminous galaxies are mainly distributed in large filaments and galaxy clusters. The remaining large volumes are virtually devoid of luminous galaxies.
Matthias Hoeft, Stefan Gottlöber
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Galaxy Threshing and the Formation of Ultracompact Dwarf Galaxies [PDF]
The Astrophysical Journal, 2001 Recent spectroscopic and morphological observational studies of galaxies around NGC 1399 in the Fornax Cluster (Drinkwater et al. 2000b) have discovered several `ultra-compact dwarf' galaxies with intrinsic sizes of $\sim$ 100 pc and absolute $B$ band magnitudes ranging from -13 to -11 mag.
Bekki, Kenji +2 more
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