Results 71 to 80 of about 52,678 (266)

Angular Momentum across the Hubble sequence from the CALIFA survey [PDF]

, 2014
We investigate the stellar angular momentum of galaxies across the Hubble sequence from the CALIFA survey. The distribution of CALIFA elliptical and lenticular galaxies in the $\lambda_{\rm Re}-\epsilon_{\rm e}$ diagram is consistent with that shown by ...
collaboration, the CALIFA, Falcón-Barroso, Jesús, Lyubenova, Mariya, van de Ven, Glenn   +3 more
core   +1 more source

The habitability of large elliptical galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT Based on numbers of stars, supernova rates, and metallicity, a prior study concluded that large elliptical galaxies contain up to 10 000 times more habitable planets than the Milky Way and are thus the ‘cradles of life’. Using the results of their model and taking into account galactic number distributions and supernova rates, I
openaire   +3 more sources

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, EarlyView.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

How non-linear scaling relations unify dwarf and giant elliptical galaxies

, 2010
Dwarf elliptical galaxies are frequently excluded from bright galaxy samples because they do not follow the same linear relations in diagrams involving effective half light radii R_e or mean effective surface brightnesses _e.
A.W. Graham, Andredakis, Baldry, Begelman, Bender, Caon, Carter, Carter, Côté, Davies, Davies, de Rijcke, Djorgovski, D’Onofrio, Ebisuzaki, Emsellem, Falcón-Barroso, Ferrarese, Fisher, Gadotti, Gargiulo, Gavazzi, Graham, Graham, Graham, Graham, Graham, Graham, Graham, Graham, Graham, Greene, Held, Jerjen, Kormendy, Kormendy, Kormendy, Krajnović, La Barbera, Matković, Merritt, Metcalfe, Peletier, Skelton, Tolstoy, Trujillo, Young, Young, Zaritsky   +48 more
core   +1 more source

The Way We Measure: Comparison of Methods to Derive Radial Surface Brightness Profiles [PDF]

, 2016
The breaks and truncations in the luminosity profile of face-on spiral galaxies offer valuable insights in their formation history. The traditional method of deriving the surface photometry profile for face-on galaxies is to use elliptical averaging.
de Jong, R. S., Peters, S. P. C., van der Kruit, P. C.   +2 more
core   +2 more sources

Weak Homology of Bright Elliptical Galaxies [PDF]

, 2003
Studies of the Fundamental Plane of early-type galaxies, from small to intermediate redshifts, are often carried out under the guiding principle that the Fundamental Plane reflects the existence of an underlying mass-luminosity relation for such galaxies,
Bertin, Giuseppe
core   +3 more sources

Triaxiality in elliptical galaxies

Monthly Notices of the Royal Astronomical Society, 1980
A simple geometrical model of elliptical galaxies having shells with different axial ratios c/a, b/a has been produced to interpret three fundamental key-features of elliptical galaxies: (1) the distribution of the maximum flattening observed; (2) the percentage of ellipticals showing twisting; and (3) the correlation between maximum twisting and ...
BENACCHIO L., GALLETTA, GIUSEPPE
openaire   +3 more sources

A review of multiscale numerical modeling of rock mechanics and rock engineering

Deep Underground Science and Engineering, EarlyView.
Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley   +1 more source

UV Visibility of Moderate-Redshift Giant Elliptical Galaxies [PDF]

Journal of Astronomy and Space Sciences, 1998
We show quantitatively whether giant elliptical galaxies would be visible at far UV wavelengths if they were placed at moderate redshift of 0.4-0.5. On the basis of simple cosmological tests, we conclude that giant elliptical galaxies can be detectable ...
Myung-Hyun Rhee, Young-Wook Lee, Yong-Ik Byun, Young-Jong Sohn   +3 more
doaj  

Dynamics of Elliptical Galaxies with Planetary Nebulae in Modified Newtonian Dynamics

, 2016
The dynamics of an elliptical galaxy within a couple of effective radii can be probed effectively by stars. However, at larger distances planetary nebulae (PNe) replace stars as the tracer of the dynamics.
Ko, Chung-Ming, Tian, Yong
core   +1 more source