The nature of E and S0 galaxies: A study of magnitude-limited sample of galaxies in the Coma Cluster

1994 ◽  
Vol 433 ◽  
pp. 553 ◽  
Author(s):  
Inger Jorgensen ◽  
Marijn Franx
Keyword(s):  
Coma Cluster ◽  
Limited Sample ◽  
S0 Galaxies

scholarly journals Barred S0 galaxies in the Coma cluster

2014 ◽  
Vol 439 (2) ◽  
pp. 1749-1764 ◽  
Author(s):  
G. B. Lansbury ◽  
J. R. Lucey ◽  
R. J. Smith
Keyword(s):  
Coma Cluster ◽  
S0 Galaxies

scholarly journals Properties of E & S0 Galaxies in the Coma Cluster

1996 ◽  
Vol 171 ◽  
pp. 419-419
Author(s):  
Dörte Mehlert ◽  
Ralf Bender ◽  
Roberto Saglia ◽  
Gary Wegner ◽  
Inger Jørgensen
Keyword(s):  
Kinetic Energy ◽  
Stellar Population ◽  
Velocity Dispersion ◽  
Low Density ◽  
Coma Cluster ◽  
Measured Velocity ◽  
The Mean ◽  
Velocity Dispersions ◽  
S0 Galaxies ◽  
Mean Kinetic Energy

As one of the richest nearby clusters, Coma is the ideal place to study the structure of galaxies as a function of environmental density, thus to constrain the theories of galaxy formation and evolution. For a magnitude limited sample of ≈ 40 E and S0 galaxies we want to obtain spectra with sufficient S/N and spatial resolution, that we can derive the rotation curves, the velocity dispersions profiles and the radial gradients of the line indices of Mg, Fe and Hβ. Following questions will be addressed: •Are the radial velocity dispersion profiles and the rotation of galaxies in high density environments similar to those in low density environments? Data for galaxies in low density environment are available from Bender et al. (1994, MNRAS, 269, 785). Are the centrally measured velocity dispersions representative for the mean kinetic energy of the galaxy?•Can the scatter in the Fundamental Plane (FP) - which tightly correlates the radii, surface brightnesses and (central) velocity dispersions (Djorgovski & Davis, 1987, ApJ, 313, 59; Dressier et al. 1987, ApJ, 313, 42) - for the Coma cluster be reduced if the mean kinetic energy is used instead of the central velocity dispersion? Can we derive stronger constraint on the variations in the M/L ratio than already implied by the FP?•The radial gradients of the line indices can be used to test the hypothesis that the metallicity gradient depends on the so-called “escape velocity” of the stars introduced by Franx & Illingworth (1990, ApJ, 359, L41). Also we can check whether the age of the stellar population varies with radius. Ages and metallicities can be estimated from the data with the use of stellar population models (Worthey 1994, ApJS, 95, 105; Bruzual & Chariot 1993, ApJ, 405, 538).•How does the radial variation of stellar populations and kinematics within the galaxies vary as a function of the clusters density profile?

A Comparison of Coma Cluster S0 Galaxies with the Tully-Fisher Relation for Late-Type Spirals

2001 ◽  
Vol 121 (2) ◽  
pp. 683-691 ◽  
Author(s):  
Joannah L. Hinz ◽  
Hans-Walter Rix ◽  
Gary M. Bernstein
Keyword(s):  
Coma Cluster ◽  
Late Type ◽  
Fisher Relation ◽  
S0 Galaxies

scholarly journals Low-Power Radio Sources in the Nuclei of Nearby E/S0 Galaxies: Evidence for Active Nuclei and for Current Star Formation

1989 ◽  
Vol 134 ◽  
pp. 522-523
Author(s):  
J. M. Wrobel
Keyword(s):  
Low Power ◽  
Selection Criteria ◽  
Recent Literature ◽  
Morphological Type ◽  
Limited Sample ◽  
Nuclear Activity ◽  
Redshift Survey ◽  
S0 Galaxies ◽  
Distance Limit ◽  
Heliocentric Velocity

Galaxies were selected from the CfA redshift survey (Huchra et al. 1983, Ap.J.Suppl., 52, 189; Tonry 1984, private communication) according to: Decl.(1950) ≥ 0°; photographic or B(0) magnitude ≤ 14 mag; heliocentric velocity ≤ 3000 km s−1; and de Vaucouleurs morphological type T ≤ −1. The third criterion roughly corresponds to a distance limit of 40 Mpc for H0 = 75 km s−1 Mpc−1. The fourth criterion is equivalent to a Hubble morphological type of elliptical (E) or lenticular (S0), collectively referred to as E/S0 galaxies hereafter. 213 galaxies satisfy the above selection criteria, after 3 Local Group dwarf spheroidals are excluded. Various galaxy catalogs and the recent literature were consulted to check the CfA morphological classifications and to divide the galaxies into Es and S0s. These galaxies comprise a volume– and optical–magnitude–limited sample that is ideally suited to systematic searches in all spectral domains for low-power nuclear activity (Wrobel 1988, A.J., in press).

scholarly journals Inner polar ionized-gas disks and properties of their host galaxies

2014 ◽  
Vol 10 (S309) ◽  
pp. 53-56
Author(s):  
Olga K. Sil'chenko
Keyword(s):  
Stellar Population ◽  
Line Of Sight ◽  
Host Galaxies ◽  
Complete Sample ◽  
Limited Sample ◽  
Ionized Gas ◽  
Lenticular Galaxies ◽  
Integral Field Spectrograph ◽  
S0 Galaxies ◽  
Integral Field

AbstractI have analyzed line-of-sight velocity fields of the stellar and ionized-gas components for the volume-limited sample of nearby lenticular galaxies by using the raw data of the ATLAS-3D survey undertaken with the integral-field spectrograph SAURON. Among 200 nearby lenticular galaxies, I distinguish 20 cases of nearly orthogonal rotation of the inner ionized gas with respect to the central stellar components; so I estimate a frequency of the inner polar disks in nearby S0 galaxies as 10%. Properties of the central stellar populations – mean ages, metallicities, magnesium-to-iron ratios – are derived through the Lick indices. The typical stellar population properties of the polar-disk host galaxies are exactly the same as the stellar population properties of the complete sample.

scholarly journals S0 galaxies in the Coma cluster: environmental dependence of the S0 offset from the Tully–Fisher relation

2013 ◽  
Vol 433 (3) ◽  
pp. 2667-2692 ◽  
Author(s):  
T. D. Rawle ◽  
John R. Lucey ◽  
Russell J. Smith ◽  
J. T. C. G. Head
Keyword(s):  
Coma Cluster ◽  
Fisher Relation ◽  
S0 Galaxies ◽  
Environmental Dependence

The Oxford Handbook of the Operatic Canon

2020 ◽  
Keyword(s):  
Musical Theater ◽  
Geographical Location ◽  
The United States ◽  
Late Nineteenth Century ◽  
Limited Sample ◽  
The United Kingdom ◽  
Production And Consumption ◽  
Formation History ◽  
Artistic Directors ◽  
Selection Of

This collection examines the phenomenon of the operatic canon: its formation, history, current ontology and practical influence, and future. It does so by taking an international and interdisciplinary view: the workshops from which it was derived included the participation of critics, producers, artistic directors, stage directors, opera company CEOs, and even economists, from the United Kingdom, the United States, France, Italy, Ireland, Germany, the Netherlands, Denmark, and Canada. The volume is structured as a series of dialogues: each subtopic is addressed by two essays, introduced jointly by the authors, and followed by a jointly compiled list of further reading. These paired essays complement each other in different ways, for example by treating the same geographical location in different periods, by providing different national or regional perspectives on the same period, or by thinking through similar conceptual issues in contrasting milieus. Part I consists of a selection of surveys of operatic production and consumption contexts in France, Italy, Germany, England, Russia, and the Americas, arranged in rough order from the late seventeenth century to the late nineteenth century. Part II is a (necessarily) limited sample of subjects that illuminate the operatic canon from different—sometimes intentionally oblique—angles, ranging from the influence of singers to the contiguous genres of operetta and musical theater, and the effects of recording and broadcast over almost 150 years. The volume concludes with two essays written by prominent figures from the opera industry who give their sense of the operatic canon’s evolution and prospects.

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