Results 41 to 50 of about 151,849 (119)
The core of the problem: Physical limits of the core–Sérsic model
Astronomy & AstrophysicsThe core–Sérsic model is the standard tool for describing partially depleted stellar cores in massive early-type galaxies, yet its physical admissibility has rarely been examined.
Baes Maarten
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Thick disks of lenticular galaxies
, 2004 Thick disks are faint and extended stellar components found around several disk galaxies including our Milky Way. The Milky Way thick disk, the only one studied in detail, contains mostly old disk stars (≈10 Gyr), so that thick disks are likely to ...
M. Balcells +3 more
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Astronomy & AstrophysicsContext. Ultra-compact massive galaxies (UCMGs) often exhibit elevated stellar-to-dynamical mass ratios when dynamical masses are estimated using standard virial prescriptions. This discrepancy has been interpreted as evidence for structural non-homology
Spiniello Chiara
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, 2016 ‘Galaxies’ describes galaxy morphology, the chemical evolution of galaxies, and stellar dynamics. A galaxy consists of a huge number of point masses—stars and dark matter—that move freely in the gravitational field that they jointly generate.
James Binney
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The Astrophysical JournalGalaxy formation and evolution are hierarchical. The most massive galaxies are thought to form their central regions early through violent dissipational processes, then grow inside-out by accreting smaller satellites.
Haoran Dou +4 more
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A three-colour photometric survey of Virgo 'core' lenticular galaxies [PDF]
, 2018 Photographic Surface photometry in the Johnson B, R and I passbands of eighteen galaxies within 3° of the Virgo cluster 'core' is presented in this work. U.K.
Malcolm, Gordon J
core +2 more sources
Luminosities of barred and unbarred S0 galaxies
, 2012 Lenticular galaxies with M B < -21.5 are almost exclusively unbarred, whereas both barred and unbarred objects occur at fainter luminosity levels. This effect is observed both for objects classified in blue light, and for those that were classified in ...
Van Den Bergh, S.
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PGC 44685: A Dwarf Star-forming Lenticular Galaxy with a Wolf–Rayet Population
The Astrophysical JournalLenticular galaxies (S0s) are formed mainly from the gas stripping of spirals in the cluster. But how S0s form and evolve in the field is still in need of being resolved.
Shiying Lu +10 more
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Color dichotomy and gradients in the bulges and disks of EFIGI galaxies along the Hubble sequence
Astronomy & AstrophysicsContext. One of the most outstanding questions in contemporary astrophysics is: What is the significance of galaxy morphology? What physical processes underlie the morphologies we observe and is a galaxy’s internal structure shaping its evolution (nature)
Quilley L. +2 more
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The baryonic mass–size relation of galaxies
Astronomy & AstrophysicsThe baryonic mass–size relation of galaxies links the total baryonic mass (stars plus gas) to the baryonic half-mass radius. In the first paper of this series, we showed that star-forming galaxies from the SPARC sample follow two distinct relations in ...
Hua Zichen +4 more
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