Results 71 to 80 of about 6,612 (195)

Stellar Populations in Nearby Lenticular Galaxies

The Astrophysical Journal, 2006
We have obtained 2D spectral data for a sample of 58 nearby S0 galaxies with the Multi-Pupil Spectrograph of the 6m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences. The Lick indices H-beta, Mgb, and are calculated separately for the nuclei and for the bulges taken as the rings between R=4" and 7"; and the ...
openaire   +3 more sources

NGC 404, A Rejuvenated Lenticular Galaxy on a Merger-Induced, Blueward Excursion into the Green Valley [PDF]

, 2010
We have discovered recent star formation in the outermost portion (1-4x R_25) of the nearby lenticular (S0) galaxy NGC 404 using GALEX UV imaging.
Baldry, Bell, Boissier, Calzetti, Dalcanton, Dale, del Río, Donas, Donovan, Faber, Gil de Paz, Kannappan, Karachentsev, Kaviraj, Kennicutt, Krumholz, Lee, Leitherer, Maoz, Martin, Morganti, Morrissey, Ohl, Prescott, Rich, Sage, Salim, Schawinski, Schiminovich, Schlegel, Strateva, Thilker, Thilker, Tonry, Trager, van der Hulst, Wiklind, Wyder, Wyder, Yi   +39 more
core   +5 more sources

Misaligned Gas Acquisition as a Formation Pathway of S0 Galaxies

The Astrophysical Journal
We analyze a sample of 753 S0 galaxies from the MPL-10 of Mapping Nearby Galaxies at Apache Point Observatory survey and investigate the gas–star kinematic misalignment and merger remnant fraction in galaxies with different morphological types.
Yuren Zhou, Yanmei Chen, Yong Shi, Qiusheng Gu, Junfeng Wang, Dmitry Bizyaev   +5 more
doaj   +1 more source

A Complex Stellar Line-of-Sight Velocity Distribution in the Lenticular Galaxy NGC 524

Open Astronomy, 2011
We present a detailed study of the stellar and gaseous kinematics in the luminous early-type galaxy NGC 524, derived from the long-slit spectroscopic observations obtained with the Russian 6 m telescope and the IFU data from the SAURON survey.
Katkov I., Chilingarian I., Sil’chenko O., Zasov A., Afanasiev V.   +4 more
doaj   +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
core   +1 more source

The Bulge-Halo Connection in Galaxies: A Physical Interpretation of the Vcirc-sigma_0 Relation

, 2006
We explore the dependence of the ratio of a galaxy's circular velocity, Vcirc, to its central velocity dispersion, sigma_0, on morphology, or equivalently total light concentration. Such a dependence is expected if light traces the mass.
Cappellari M., Jon Holtzman, Lawrence M. Widrow, Michael McDonald, Stéphane Courteau, Tully R. B.   +5 more
core   +1 more source

Formation of the Dark Matter–Deficient S0 Galaxy NGC 4111 under the Tidal Interactions

The Astrophysical Journal Letters
We present high-sensitivity and large-scale atomic hydrogen (H i ) observations toward lenticular (S0) galaxy NGC 4111 using the Five-hundred-meter Aperture Spherical Radio Telescope.
Mei Ai, Ming Zhu, Nai-ping Yu, Jin-long Xu, Xiao-lan Liu, Yingjie Jing, Qian Jiao, Yao Liu, Chuan-peng Zhang, Jie Wang, Peng Jiang   +10 more
doaj   +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
core   +1 more source

Testing the nature of S0 galaxies using planetary nebula kinematics in NGC 1023 [PDF]

, 2007
We investigate the manner in which lenticular galaxies are formed by studying their stellar kinematics: an S0 formed from a fading spiral galaxy should display similar cold outer disc kinematics to its progenitor, while an S0 formed in a minor merger ...
Arnaboldi, M., Capaccioli, M., Coccato, L., De Lorenzi, F., Douglas, N. G., Freeman, K. C., Gerhard, O., Kuijken, K., Merrifield, M. R., Napolitano, N. R., Noordermeer, E., Romanowsky, A. J.   +11 more
core   +4 more sources

Exponential bulges and antitruncated disks in lenticular galaxies [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractThe presence of exponential bulges and anti-truncated disks has been noticed in many lenticular galaxies. In fact, it could be expected because the very formation of S0 galaxies includes various processes of secular evolution. We discuss how to distinguish between a pseudobulge and an anti-truncated disk, and also what particular mechanisms may
openaire   +3 more sources