Results 61 to 70 of about 6,495 (171)

The Newtonian and MOND dynamical models of NGC 5128: Investigation of the dark matter contribution [PDF]

Serbian Astronomical Journal, 2016
We study the well-known nearby early-type galaxy NGC 5128 (Centaurus A) and use the sample of its globular clusters to analyze its dynamics. We study both Newtonian and MOND models assuming three cases of orbital anisotropies: isotropic case ...
Samurović S.
doaj   +1 more source

KINEMATICS AND STELLAR POPULATIONS IN ISOLATED LENTICULAR GALAXIES

The Astronomical Journal, 2015
By combining new long-slit spectral data obtained with the Southern African Large Telescope (SALT) for 9 galaxies with previously published our observations for additional 12 galaxies we study the stellar and gaseous kinematics as well as radially resolved stellar population properties and ionized gas metallicity and excitation for a sample of isolated
Katkov, Ivan Yu., Kniazev, Alexei Yu., Sil'chenko, Olga K.   +2 more
openaire   +2 more sources

Compact elliptical galaxies – compact bulges of stripped lenticulars/spirals? [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractWe present discovery of compact elliptical galaxies in the centres of clusters and briefly discuss their evolution.
Chilingarian, Igor V., Cayatte, Véronique, Chemin, Laurent, Durret, Florence   +3 more
openaire   +1 more source

The Galaxy Population of Abell 1367: The Stellar Mass-Metallicity Relation

, 2011
Using wide baseline broad-band photometry, we analyse the stellar population properties of a sample of 72 galaxies, spanning a wide range of stellar masses and morphological types, in the nearby spiral-rich and dynamically young galaxy cluster Abell 1367.
Balogh, Barnes, Barnes, Bell, Boselli, Bressan, Burstein, Buta, Butcher, Carter, Cortese, De Lucia, de Vaucouleurs, Donnelly, Dressler, Dressler, Driver, Faber, Gallazzi, Gao, Gavazzi, Gavazzi, Godwin, Gratton, Grebenev, Guenther, Guzmán, Hempel, James, Katz, Kennicutt, Kewley, Kewley, Korn, Kroupa, Lane, Lee, Lewis, M. Mouhcine, MacArthur, Michel-Dansac, Mihos, Moss, Moss, Moss, Moss, Nelan, Odell, P. A. James, Peeples, Peletier, Peletier, Pietrinferni, Poggianti, Puzia, Rakos, Rakos, Rakos, Rakos, Rose, Rose, Rupke, Rupke, Sakai, Schiavon, Schlegel, Schombert, Schombert, Smail, Smith, Smith, Struble, Sun, Sánchez-Blázquez, Taylor, Terlevich, Terlevich, Thomas, Thomas, Vazdekis, W. Kriwattanawong, West, Worthey, Worthey, Zaritsky   +84 more
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The Cool ISM in Elliptical Galaxies. II. Gas Content in the Volume - Limited Sample and Results from the Combined Elliptical and Lenticular Surveys

, 2010
We report new observations of atomic and molecular gas in a volume limited sample of elliptical galaxies. Combining the elliptical sample with an earlier and similar lenticular one, we show that cool gas detection rates are very similar among low ...
Barth, Brighenti, Crocker, D'Ercole, de Vaucouleurs, del Rio, Gary A. Welch, Goudfrooij, Huchtmeier, Huchtmeier, Isobe, Knapp, Knapp, Kormendy, Lauer, Leslie J. Sage, Lisa M. Young, Naab, Naab, Parriott, Prugniel, R Development Core Team., Sage, Sage, Sancisi, Sandage, Shostak, Springob, Taylor, Tully, van Driel, Welch, Wiklind, Young, Young, Young   +35 more
core   +1 more source

Synchronous Evolution of Galaxies in Groups: NGC 524 Group

, 2012
By means of panoramic spectroscopy at the SAO RAS BTA telescope, we investigated the properties of stellar populations in the central regions of five early-type galaxies -- the NGC 524 group members. The evolution of the central regions of galaxies looks
Ch. Sengupta, D. A. Forbes, D. Burstein, D. E. Osterbrock, D. J. Wilman, D. Makarov, D. Thomas, D.W. Just, G. Gilmore, G. Stasinska, G. Vaucouleurs de, G. Worthey, G. Worthey, J. Kormendy, J. L. Tonry, J. Osmond, J. Vennik, K. Bekki, L. A. Jones, M. J. Geller, O. K. Sil’chenko, O. K. Sil’chenko, O. K. Sil’chenko, O. K. Sil’chenko, O. K. Sil’chenko, O. K. Sil’chenko, O. K. Sil’chenko, O. K. Sil’chenko, O.K. Sil’chenko, S. Brough, S. C. Trager, S. C. Trager, S. Veilleux, V. L. Afanasiev, V. L. Afanasiev, V. L. Afanasiev   +35 more
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Star formation histories of dwarf lenticular galaxies

Monthly Notices of the Royal Astronomical Society
ABSTRACT Star formation histories (SFHs) are essential for understanding galaxy formation and evolution. We present the mean SFHs of 148 dwarf lenticular galaxies (dS0s) derived from the Sloan Digital Sky Survey spectra. These SFHs reveal two distinct periods of active star formation. The first period, concluding approximately 6 Gyr ago,
Hong Bae Ann, Mira Seo
openaire   +2 more sources

Mass Stratification in the Globular Cluster System Revealing the Assembly History of the Nearest S0 Galaxy NGC 3115

The Astrophysical Journal
Galaxy formation and evolution are hierarchical. The most massive galaxies are thought to form their central regions early through violent dissipational processes, then grow inside-out by accreting smaller satellites.
Haoran Dou, Hao Li, Hong-Xin Zhang, Heng Yu, Huiyuan Wang   +4 more
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Disk Growth in Bulge-Dominated Galaxies: Molecular Gas and Morphological Evolution

, 2007
Substantial numbers of morphologically regular early-type (elliptical and lenticular) galaxies contain molecular gas, and the quantities of gas are probably sufficient to explain recent estimates of the current level of star formation activity.
Alison Crocker, Francoise Combes, Lisa Young, Martin Bureau, Wiklind, Wiklind   +5 more
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Galaxy And Mass Assembly (GAMA) : stellar mass functions by Hubble type [PDF]

, 2014
This work was supported by the Austrian Science Foundation FWF under grant P23946. AWG was supported under the Australian Research Council's funding scheme FT110100263.We present an estimate of the galaxy stellar mass function and its division by ...
Alpaslan, Mehmet, Baldry, Ivan, Bamford, Steven P., Bauer, Amanda E., Bland-Hawthorn, Joss, Brown, Michael J. I., Colless, Matthew, Conselice, Christopher J., Driver, Simon P., Graham, Alister W., Holwerda, Benne W., Hopkins, Andrew M., Kelvin, Lee S., Lara-Lopez, Maritza A., Liske, Jochen, Lopez-Sanchez, Angel R., Loveday, Jon, Norberg, Peder, Phillipps, Steven, Popescu, Cristina C., Prescott, Matthew, Robotham, Aaron S. G., Sansom, Anne E., Taylor, Edward N., Tuffs, Richard J.   +24 more
core   +4 more sources