Results 21 to 30 of about 116,041 (186)
Observed Properties of Dark Matter on Small Spatial Scales [PDF]
, 2007 The nature of dark matter is one of the outstanding questions of astrophysics. The internal motions of member stars reveal that the lowest luminosity galaxies in the Local Group are the most dark-matter dominated.
Benson +4 more
core +1 more source
Optical surface photometry of radio galaxies - II. Observations and data analysis [PDF]
, 1999 Optical imaging observations for 50 radio galaxies are presented. For each object isophotal contours, photometric profiles, structural parameters (position angle, ellipticity, Fourier coefficients), and total magnitudes are given.
Falomo, R. +3 more
core +1 more source
A Progress Report on the Caltech Faint Galaxy Redshift Survey [PDF]
, 2000 I review recent progress on determining the spectral energy distributions and luminosity functions for galaxies in the large magnitude limited sample in the region of the HDF-North of the Caltech Faint Galaxy Redshift Survey.Comment: Invited contribution
Cohen, Judith
core +2 more sources
ASTROPHYSICAL FRACTALS: INTERSTELLAR MEDIUM AND GALAXIES [PDF]
, 2000 The interstellar medium is structured as a hierachy of gas clouds, that looks self-similar over 6 orders of magnitude in scales and 9 in masses. This is one of the more extended fractal in the Universe. At even larger scales, the ensemble of galaxies looks also self-similar over a certain ranges of scales, but more limited, may be over 3-4 orders of ...
openaire +3 more sources
The slow death of red galaxies [PDF]
Nature, 2015 This a nearly final draft of a News and Views appeared on Nature in May 2015. It also summarises the content of the talk "Shutdown and downsizing" that I presented at the EWASS meeting "How galaxies live and die: the onset and end of star formation across cosmic time" (Athens, Greece, 6th July 2016)
openaire +7 more sources
Antiprotons from dark matter annihilation in the Galaxy: Astrophysical uncertainties [PDF]
Physical Review D, 2012 The latest years have seen steady progresses in WIMP dark matter (DM) searches, with hints of possible signals suggested by both direct and indirect detection experiments. Antiprotons can play a key role validating those interpretations since they are copiously produced by WIMP annihilations in the Galactic halo, and the secondary antiproton background
Luca Maccione +5 more
openaire +6 more sources
The Symmetry, Color and Morphology of Galaxies in the Hubble Deep Field [PDF]
, 1998 We present a new method of utilizing the color and asymmetry values for galaxies in the Hubble Deep Field to determine both their morphological features and physical parameters.
Bershady, Matthew A. +1 more
core +3 more sources
Studies of Seyfert galaxies in Fesenkov Astrophysical Institute
Communications of the Byurakan Astrophysical Observatory, 2020 This article provides an overview of the main research results of a large group of Seyfert galaxies, carried out at Fesenkov Astrophysical Institute (FAI) over the past 50 years. Spectral observations have been performed since 1970. At an early stage, a three cascade image-tube (UM-92) was used as a radiation receiver.
M. Krugov +5 more
openaire +2 more sources
THE THEORETICAL ASTROPHYSICAL OBSERVATORY: CLOUD-BASED MOCK GALAXY CATALOGS* [PDF]
The Astrophysical Journal Supplement Series, 2016 ABSTRACT We introduce the Theoretical Astrophysical Observatory (TAO), an online virtual laboratory that houses mock observations of galaxy survey data. Such mocks have become an integral part of the modern analysis pipeline. However, building them requires expert knowledge of galaxy modeling and simulation techniques, significant ...
Amr H. Hassan +13 more
openaire +6 more sources
GASP XXIII: A Jellyfish Galaxy as an Astrophysical Laboratory of the Baryonic Cycle [PDF]
The Astrophysical Journal, 2019 Abstract With MUSE, Chandra, VLA, ALMA, and UVIT data from the GASP program, we study the multiphase baryonic components in a jellyfish galaxy (JW100) with a stellar mass 3.2 × 1011 M ⊙ hosting an active galactic nucleus (AGN).
Elke Roediger +26 more
openaire +7 more sources