The D n — Log σ Relation for Elliptical Galaxies: Present Status and Future Work

1989 ◽  
pp. 547-566 ◽  
Author(s):  
David Burstein
Keyword(s):  
Present Status ◽  
Elliptical Galaxies ◽  
Future Work

Present status of radio astrometry with baselines ≤ 35 km

1978 ◽  
Vol 48 ◽  
pp. 175-178 ◽  
Author(s):  
K. J. Johnston
Keyword(s):  
Present Status ◽  
Future Work

A summary of results for radio astrometry with baselines ≤ 35 km and priorities for future work are given.

scholarly journals Dynamics in the Centres of Triaxial Elliptical Galaxies

1987 ◽  
Vol 127 ◽  
pp. 241-248
Author(s):  
Ortwin E. Gerhard
Keyword(s):  
Black Hole ◽  
Large Angle ◽  
Elliptical Galaxies ◽  
Central Density ◽  
Massive Black Hole ◽  
Upper Limits ◽  
Density Concentration ◽  
The Masses ◽  
Future Work ◽  
Spherical Potential

Orbits in the inner kpc of a triaxial galaxy are discussed, taking into account the effect of a central density concentration like a massive black hole, a dense stellar nucleus, or a de Vaucouleurs-type cusp. Since the box orbits that form the backbone of a triaxial galaxy pass arbitrarily close to the centre after long enough time, they will eventually be subjected to large-angle deflections by a central point mass, and the triaxiality of the inner part of the system will thereby be destroyed. A 108 M⊙ black hole is estimated to affect box orbits out to 1kpc in a Hubble time, while a similar influence of the observed (extended) nucleus in M31 reaches out to 500pc in the bulge. Regular box orbits persist, however, in systems with singular central density profiles such as implied by carrying the r1/4 law all the way to the centre. This result can be approximately understood in terms of the frequency ratio Ωr/Ωθ remaining close to the harmonic value of 2 for many orbits in the corresponding spherical potential. Finally, I discuss observable consequences of the box orbit scattering process and future work, and use the presence of isophote twists in the central parts of a number of elliptical galaxies to obtain approximate upper limits on the masses of the black holes these systems may contain.

European Research and Development Programme for Water-Cooled Lithium-Lead Blankets Present Status and Future Work

1992 ◽  
Vol 21 (3P2B) ◽  
pp. 2075-2080 ◽  
Author(s):  
L. Giancarli ◽  
F. Barbier ◽  
T. Flament ◽  
M. Futterer ◽  
P. Leroy ◽  
...  
Keyword(s):  
Research And Development ◽  
Present Status ◽  
Development Programme ◽  
European Research ◽  
Future Work

scholarly journals The Evolution and Growth of Nearby Galaxy Groups

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Katiya Claire Fosdick
Keyword(s):  
Optical Properties ◽  
Absolute Magnitude ◽  
Elliptical Galaxies ◽  
High Mass ◽  
Nearby Galaxy ◽  
Galaxy Groups ◽  
Group Environment ◽  
The Galaxy ◽  
Mass Group ◽  
Future Work

To determine how galaxy groups grow and individual galaxies evolve in the local universe, this project used 19 high-richness, high-mass galaxy groups at z < 0.1 from the Berlind et al. 2006 paper to study the nearby group environment through its optical properties. Using position, g-r color, and r-band absolute magnitude data, the shapes, luminosities, and colors of each member galaxy was mapped in group combination plots and an inter-group color-magnitude diagram of all 477 sample galaxies. These figures show that members of the high-mass group environment trend towards redness where the most luminous members of each galaxy group are found to be red. Both findings are consistent with previous predictions of the group environment’s bias towards red elliptical galaxies. Future work using optical properties and the galaxy sequence will be crucial to identify galaxies in groups undergoing evolutionary change as potential indicators of a changing group environment.

scholarly journals Relativity in fundamental astronomy

2012 ◽  
Vol 10 (H16) ◽  
pp. 204-205
Author(s):  
M. Soffel
Keyword(s):  
Present Status ◽  
Broad Field ◽  
Fundamental Astronomy ◽  
Future Work

AbstractAn overview is given over the broad field of Relativity in Fundamental Astronomy. The present status is recalled and deficiencies are pointed out that might lead to future work within IAU Commission 52.

Experimental Programme in Support of the Development of the European Ceramic-Breeder-Inside-Tube Test-Blanket: Present Status and Future Work

1992 ◽  
Vol 21 (3P2B) ◽  
pp. 2089-2098 ◽  
Author(s):  
E. Proust ◽  
N. Roux ◽  
T. Flament ◽  
V. Levy ◽  
L. Anzidei ◽  
...  
Keyword(s):  
Present Status ◽  
Tube Test ◽  
Experimental Programme ◽  
Future Work

Present status of nutrition instruction in dental schools

1966 ◽  
Vol 30 (1) ◽  
pp. 82-85 ◽  
Author(s):  
KE Wessels
Keyword(s):  
Present Status ◽  
Nutrition Instruction ◽  
Dental Schools

The present status of United States dental education

1981 ◽  
Vol 45 (10) ◽  
pp. 628-637
Author(s):  
WE Brown
Keyword(s):  
United States ◽  
Present Status ◽  
Dental Education
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