Results 11 to 20 of about 500,059 (233)

Planetary Nebulae and the Ionization of the Interstellar Medium in Galaxies

open access: yesFrontiers in Astronomy and Space Sciences, 2022
We discuss the role of planetary nebulae and their progeny in galaxy context in terms of ionization of the galaxy interstellar medium. This regards ionized gas outside the disk of spiral galaxies, the diffuse ionized medium in spiral galaxies, and the ...
Grażyna Stasińska   +2 more
doaj   +1 more source

The structural and dynamical properties of compact elliptical galaxies [PDF]

open access: yes, 2017
Dedicated photometric and spectroscopic surveys have provided unambiguous evidence for a strong stellar mass-size evolution of galaxies within the last 10 Gyr.
A. Yıldırım   +7 more
semanticscholar   +1 more source

Isolated compact elliptical galaxies: Stellar systems that ran away [PDF]

open access: yesScience, 2015
Galaxies stripped down and evicted It is easy to imagine that the relatively small and dense compact elliptical galaxies once had more to them. Especially when massive galactic neighbors are seen nearby that may have robbed them of their matter, but ...
I. Chilingarian, I. Zolotukhin
semanticscholar   +1 more source

The size evolution of elliptical galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2014
11 pages, 8 figures, 1 table, submitted to ...
Xie, L.   +5 more
openaire   +3 more sources

A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies. I. Galaxy Mergers and Quasar Activity [PDF]

open access: yes, 2007
We develop a model for the cosmological role of mergers in the evolution of starbursts, quasars, and spheroidal galaxies. By combining theoretically well-constrained halo and subhalo mass functions as a function of redshift and environment with empirical
P. Hopkins   +3 more
semanticscholar   +1 more source

A FUNDAMENTAL LINE FOR ELLIPTICAL GALAXIES [PDF]

open access: yesThe Astrophysical Journal, 2011
6 pages, 2 figures, 1 table. Accepted for publication in ApJL. Higher resolution figures available at http://www.bo.astro.it/~nair/Morphology/
Nair, P.   +2 more
openaire   +3 more sources

Phenomenological approach to the modelling of elliptical galaxies: The problem of the mass-to-light ratio [PDF]

open access: yesSerbian Astronomical Journal, 2007
In this paper the problem of the phenomenological modelling of elliptical galaxies using various available observational data is presented. Recently, Tortora, Cardona and Piedipalumbo (2007) suggested a double power law expression for the global ...
Samurović S.
doaj   +1 more source

SUPERNOVA SWEEPING AND BLACK HOLE FEEDBACK IN ELLIPTICAL GALAXIES [PDF]

open access: yes, 2015
Most of the massive elliptical galaxies in the universe stopped forming stars billions of years ago, even though plenty of hot gas remains available for star formation.
G. Voit   +5 more
semanticscholar   +1 more source

The Outside‐In Formation of Elliptical Galaxies [PDF]

open access: yesThe Astrophysical Journal, 2006
15 pages, 10 figures, ApJ ...
PIPINO A   +2 more
openaire   +3 more sources

Elliptical galaxies and bulges of disc galaxies: Summary of progress and outstanding issues [PDF]

open access: yes, 2015
Bulge components of disc galaxies are the high-density centers interior to their outer discs. Once thought to be equivalent to elliptical galaxies, their observed properties and formation histories turn out to be richer and more varied than those of ...
J. Kormendy
semanticscholar   +1 more source

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