Results 101 to 110 of about 173,290,720 (185)

The relationship between Gas and Galaxies [PDF]

, 2009
We have investigated the 2D 2-point correlation function, ƐAG, between low column density Lya absorbers and galaxies at a redshift z ~ 1 for the first time.
Shone, Allen Maurice
core  

LSB galaxies rotation curves

, 2002
VizieR online Data Catalogue associated with article published in journal Astronomy & Astrophysics with title 'High-resolution rotation curves of low surface brightness galaxies' (bibcode: 2002A&A...385..816D) File rawcurve contains the raw ...
Observatoire de Marseille, California Institute of Technology, Swaters, Robert, De Blok, Madore, Carnegie Observatories, Bosma, Trewhella, ATNF, CSIRO, Astronomy   +9 more
core   +1 more source

Causal Discovery in Astrophysics: Unraveling Supermassive Black Hole and Galaxy Coevolution

The Astrophysical Journal
Correlation does not imply causation, but patterns of statistical association between variables can be exploited to infer a causal structure (even with purely observational data) with the burgeoning field of causal discovery.
Zehao Jin, Mario Pasquato, Benjamin L. Davis, Tristan Deleu, Yu Luo, Changhyun Cho, Pablo Lemos, Laurence Perreault-Levasseur, Yoshua Bengio, Xi Kang, Andrea Valerio Macciò, Yashar Hezaveh   +11 more
doaj   +1 more source

The nature and origin of disky elliptical galaxies [PDF]

, 2002
The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
core  

Age of Massive Galaxies at Redshift 8

The Astrophysical Journal
Recent James Webb Space Telescope data analyses have shown that massive red galaxies existed at redshifts z ≳ 6, a discovery that is difficult to understand in the context of standard cosmology (ΛCDM).
M. López-Corredoira, F. Melia, J.-J. Wei, C.-Y. Gao   +3 more
doaj   +1 more source

The causal structure of galactic astrophysics

The Open Journal of Astrophysics
Data-driven astrophysics currently relies on the detection and characterisation of correlations between objects' properties, which are then used to test physical theories that make predictions for them.
Harry Desmond, Joseph Ramsey
doaj   +1 more source

The Mitchell Spectrograph: Studying Nearby Galaxies with the VIRUS Prototype

Advances in Astronomy, 2013
The Mitchell Spectrograph (a.k.a. VIRUS-P) on the 2.7 m Harlan J. Smith telescope at McDonald Observatory is currently the largest field of view (FOV) integral field unit (IFU) spectrograph in the world (1.7′×1.7′). It was designed as a prototype for the
Guillermo A. Blanc
doaj   +1 more source

Measurements of Cosmic Magnetism with LOFAR and SKA [PDF]

Advances in Radio Science, 2007
The origin of magnetic fields in stars, galaxies and clusters is an open problem in astrophysics. The next-generation radio telescopes <i>Low Frequency Array (LOFAR)</i> and <i>Square Kilometre Array (SKA)</i> will revolutionize ...
R. Beck
doaj  

Clustering and redshift-space distortions in QSO and galaxy surveys [PDF]

, 2006
In this thesis, we exploit the potential of existing QSO and galaxy surveys for investigating the nature of the large scale structure in the Universe. A detailed analysis of clustering and redshift- space distortions allows us to constrain cosmological ...
Cruz da Angela, José Antonio, José Antonio Cruz da Angela   +1 more
core  

The LEGA-C galaxy survey: Multiple quenching channels for quiescent galaxies at z ∼ 1

Astronomy & Astrophysics
Aims. We analyzed the sizes and star formation histories (SFHs) of 2908 galaxies with M★ ≥ 109 M⊙ at 0.6 
Nersesian Angelos, Kaushal Yasha, Martorano Marco, van der Wel Arjen, Wu Po-Feng, Bezanson Rachel, Bell Eric F., D’Eugenio Francesco, Gallazzi Anna R., Leja Joel, Zibetti Stefano, Tacchella Sandro   +11 more
doaj   +1 more source