Results 171 to 180 of about 471 (200)

Stellar Content of Galaxies

Science, 1961
© 1961 American Association for the Advancement of Science. This article is the Helen B. Walller lecture delivered 29 December 1960 at the New York meeting of the AAAS.
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Higas and stellar content of early-type galaxies

New Astronomy Reviews, 2007
We present Australian telescope compact array observations of the neutral-hydrogen gas in 42 early-type galaxies detected by the HIPASS survey. We confirm the detection of 18 galaxies with Hi mass between a few times 10(9) and similar to 10(10)M(circle dot) and column density below a few times 10(20) cm(-2).
Serra, P., Trager, S. C., van der Hulst, J. M., Oosterloo, T. A., Morganti, R., van Gorkom, J. H., Sadler, E. M.   +6 more
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The stellar content of the isolated transition dwarf galaxy DDO210 [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
We use Subaru Suprime-Cam and VLT FORS1 photometry of the dwarf galaxy DDO210 to study the global stellar content and structural properties of a transition-type galaxy (with properties intermediate between dwarf irregular and dwarf spheroidal systems).
Eline Tolstoy, Alan McConnachie, Nobuo Arimoto   +2 more
exaly   +3 more sources

Stellar content of the interacting galaxies of the M51 system

Astronomy Letters, 2009
Based on archival Hubble Space Telescope ACS/WFC images, we have performed stellar photometry for more than 0.6 million stars in the interacting galaxies NGC 5194 and NGC 5195 of the M51 system. Stars of various ages have been identified on the constructed Hertzsprung-Russell diagram: blue and red supergiants, AGB stars, and red giants. The distance to
N. A. Tikhonov, O. A. Galazutdinova, E. N. Tikhonov   +2 more
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The stellar content of the A496 cD galaxy

Astronomy & Astrophysics, 1985
J, H, and K radial color distributions obtained for the galaxy A496 cD indicate that while the halo becomes bluer at increasing radii in the B-V, it becomes redder in the visual-IR colors. The combined visual-IR data lead to a unique model for both the main sequence and giant stars in which the main sequence is characterized by a radial increase of an ...
Valentijn, E. A., Moorwood, A. F. M.
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Stellar content of the metal-poor galaxy DDO 68

Astronomy Letters, 2014
Based on archival Hubble Space Telescope ACS/WFC images, we have performed stellar photometry for the metal-poor galaxy DDO 68. The apparent distributions of stars of different ages and stellarmetallicity determinations indicate that DDO68 is a systemof two galaxies that have different stellar metallicities (Z = 0.004 and 0.001) and are in the stage of
N. A. Tikhonov, O. A. Galazutdinova, V. S. Lebedev   +2 more
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The stellar content of nuclear star clusters in spiral galaxies

SPIE Proceedings, 2003
We discuss first results from a spectroscopic survey of nuclear star clusters in nearby, late-type spiral galaxies. The data, obtained with the Space Telescope Imaging Spectrograph (STIS), allow us to derive cluster ages via stellar population synthesis methods.
Torsten Boeker, Roeland P. van der Marel, Joris Gerssen, Jakob Walcher, Hans-Walter Rix, Joseph C. Shields, Luis C. Ho   +6 more
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Elliptical galaxies : structure, stellar content, and evolution

1998
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. A near-infrared imaging survey of 341 nearby early-type galaxies, combined with optical imaging and spectroscopic data from the literature, are used to construct the global scaling relations for this population of galaxies.
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The Stellar Content of Early-Type Galaxies in Dense Environments

1989
We present evidence, based on an analysis of the integrated spectra of cluster and field galaxies, that the stellar content of early-type galaxies in the cores of rich clusters is different from that of early-type galaxies in low-density environments. Specifically, the large intermediate-age stellar populations inferred to exist in ellipticals in low ...
J. Rose, R. M. Sharples, R. S. Ellis, R. G. Bower   +3 more
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The Evolving Stellar Content of Galaxies and the X-Ray Evolution of Elliptical Galaxies

1990
Some of the several roles played by the evolving stellar component of galaxies are introduced, and the ultimate root of many observational correlations among global galaxy properties is indicated in the current stellar death rate. As a concrete example, the case of the stellar mass loss in elliptical galaxies is examined in detail. The material lost by
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