Results 31 to 40 of about 143,457 (288)
Exploring the outskirts of the EAGLE disc galaxies
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Observations show that the surface brightness of disc galaxies can be well-described by a single exponential (TI), up-bending (TIII), or down-bending (TII) profiles in the outskirts. Here we characterize the mass surface densities of simulated late-type galaxies from the eagle project according to their distribution of mono-age ...
Silvio Varela-Lavin +4 more
openaire +3 more sources
EESSI: A cross‐platform ready‐to‐use optimised scientific software stack
Software: Practice and Experience, Volume 53, Issue 1, Page 176-210, January 2023., 2023 Abstract Getting scientific software installed correctly and ensuring it performs well has been a ubiquitous problem for several decades now, which is compounded currently by the changing landscape of computational science with the (re‐)emergence of different microprocessor families, and the expansion to additional scientific domains like artificial ...
Bob Dröge +5 more
wiley +1 more source
The Thick Disc Population of the Galaxy [PDF]
Symposium - International Astronomical Union, 1995 The availability of photometric and astrometric star counts on large fields well distributed in the Galaxy allows us to measure the characteristics of the thick disc population. We use a total of 19 data sets in UBV towards a dozen directions in order to measure the scale height, scale length, local density and metallicity of the intermediate ...
Devendra K. Ojha +4 more
openaire +2 more sources
ZIRCONIUM ABUNDANCES IN THE CENTRAL PART OF THE dSph FORNAX GALAXY
Odessa Astronomical Publications, 2017 We derived LTE zirconium abundance in a sample of 81 giant stars in dwarf spheroidal Fornax galaxy. The LTE synthesis was used for this aim. We obtained the lower Zr abundance in Fornax galaxy comparing to the relevant value in the thick/thin disc of the
S. M. Andrievsky +3 more
doaj +1 more source
Probabilistic model for dynamic galaxy decomposition [PDF]
, 2021 In the era of precision cosmology and ever-improving cosmological simulations, a better understanding of different galaxy components such as bulges and discs will give us new insight into galactic formation and evolution. Based on the fact that the stellar populations of the constituent components of galaxies differ by their dynamical properties, we ...
arxiv +1 more source
Using the EAGLE simulations to elucidate the origin of disc surface brightness profile breaks as a function of mass and environment [PDF]
, 2021 We analyse the surface brightness profiles of disc-type galaxies in the EAGLE simulations in order to investigate the effects of galaxy mass and environment on galaxy profile types. Following observational works, we classify the simulated galaxies by their disc surface brightness profiles into single exponential (Type I), truncated (Type II) and anti ...
arxiv +1 more source
Stellar discs in massive galaxies [PDF]
Proceedings of the International Astronomical Union, 2012 Excluding those unsettled systems undergoing mergers, bright galaxies come in two flavours: with and without discs. In this work we look for photometric evidence for presence of discs and compare it with kinematic results of the ATLAS3D survey (Cappellari et al. 2011).
Timothy A. Davis +20 more
openaire +4 more sources
Astrophysical Parameters of the Open Cluster NGC 2509
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2023 This study presents structural and fundamental astrophysical parameters of poorly studied open cluster NGC 2509. We used the third photometric and astrometric data release of the Gaia (Gaia DR3) to perform analyses.
Seliz Koç, Talar Yontan
doaj +1 more source
On the density within the dark-matter core in our galaxy [PDF]
Serbian Astronomical Journal, 2007 Assuming that the disc of our Galaxy, the Milky Way, obeys the classical exponential law, that it is maximal and the Sun is rather far from the maximum of its circular velocity, one finds that, most likely, the galactic corona (subsystem containing the ...
Ninković S.
doaj +1 more source
3C 120 Disk/Corona vs. Jet Variability in X-rays
Universe, 2023 The 3C120 (Mrk 1506, UGC 03087, Mrk 9014) is a type 1 Seyfert (Sy1)/broad-line radio galaxy (BLRG) with intriguing variable jet activity featuring “dip” and “outburst” phases.
Elena Fedorova, Antonio Del Popolo
doaj +1 more source