Counterrotation in Galaxies [PDF]
Symposium - International Astronomical Union, 1999 The phenomenon of counterrotation is observed when two galaxy components have their angular momenta projected antiparallel onto the sky. It follows that if the two components rotate around the same axis, the counter-rotation is intrinsic. On the contrary the counterrotation is only apparent if the rotation axes are misaligned and the line-of-sight lies
BERTOLA, FRANCESCO +1 more
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New Strong Constraints on the Central Behaviour of Spherical Galactic Models
Astronomy, 2023 First of all, we show that any spherically symmetric galactic model with integrated mass profile M(r)→0 as r→0 is physically correct close to the centre only provided that the circular velocity vc(r)→0 and the gravitational field g(r)→0 as r→0.
Marco Roncadelli, Giorgio Galanti
doaj +1 more source
First results from the IllustrisTNG simulations: the stellar mass content of groups and clusters of galaxies [PDF]
, 2017 The IllustrisTNG project is a new suite of cosmological magneto-hydrodynamical simulations of galaxy formation performed with the Arepo code and updated models for feedback physics.
A. Pillepich +10 more
semanticscholar +1 more source
Photometric Properties of Void Galaxies in the Sloan Digital Sky Survey DR7 Data Release
, 2012 Using the sample presented in Pan:2011, we analyse the photometric properties of 88,794 void galaxies and compare them to galaxies in higher density environments with the same absolute magnitude distribution. In Pan et al.
Abazajian +70 more
core +1 more source
Galaxy Halo Masses from Galaxy‐Galaxy Lensing
The Astrophysical Journal, 2001 We present measurements of the extended dark halo profiles of bright early type galaxies at redshifts 0.1 to 0.9 obtained via galaxy-galaxy lensing analysis of images taken at the CFHT using the UH8K CCD mosaic camera. Six half degree fields were observed for a total of 2 hours each in I and V, resulting in catalogs containing ~20 000 galaxies per ...
Gerard A. Luppino +4 more
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Structural and Morphological Properties of Ultraluminous Infrared Galaxies at 1 < z < 3
Open Astronomy, 2015 Using the Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) near-infrared high-resolution imaging from the 3D-HST survey, we analyze the morphology and structure of 502 ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at 1 < z < 3. Their rest-
Fang Guanwen +3 more
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Determination of closed orbits around asymmetrical rotating galaxies by an energy method
Вісник Астрономічної школи, 2012 The influence of galaxy's triaxiality on the form and orientation of closed orbits laying near the central galactic body being modeled by triaxial ellipsoid is investigated.
V. A. Antonov +2 more
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Stellar masses and star formation histories for 105 galaxies from the Sloan Digital Sky Survey [PDF]
, 2002 We develop a new method to constrain the star formation histories, dust attenuation and stellar masses of galaxies. It is based on two stellar absorption-line indices, the 4000-A break strength and the Balmer absorption-line index Hδ A .
G. Kauffmann +21 more
semanticscholar +1 more source
Active Galactic Nuclei and the Truncation of Star Formation in K+A Galaxies
, 2009 We have searched for active galactic nuclei (AGNs) in K+A galaxies, using multiwavelength imaging and spectroscopy in the Bootes field of the NOAO Deep Wide-Field Survey.
Arjun Dey +47 more
core +1 more source
Weighing Cosmological Models with SNe Ia and Gamma Ray Burst Redshift Data
Universe, 2019 Many models have been proposed to explain the intergalactic redshift using different observational data and different criteria for the goodness-of-fit of a model to the data. The purpose of this paper is to examine several suggested models using the same
Rajendra P. Gupta
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