Results 101 to 110 of about 147,516 (226)
Lyman Continuum and Lyman α Emission from Galaxies at High Redshift [PDF]
, 2010 In this thesis we present two studies of star-forming galaxies at z ≈2-3 based on deep spectroscopic and narrow band imaging observations. The first study addresses pressing questions regarding the nature of galaxies with significant escaping Lyman ...
Bogosavljević, Milan
core +1 more source
PRECISE STRONG LENSING MASS MODELING OF FOUR HUBBLE FRONTIER FIELD CLUSTERS AND A SAMPLE OF MAGNIFIED HIGH-REDSHIFT GALAXIES [PDF]
, 2015 We conduct precise strong lensing mass modeling of four Hubble Frontier Field (HFF) clusters, Abell 2744, MACS J0416.1−2403, MACS J0717.5+3745, and MACS J1149.6+2223, for which HFF imaging observations are completed. We construct a refined sample of more
R. Kawamata +4 more
semanticscholar +1 more source
Two Micron‐Size Dark Dimensions
Fortschritte der Physik, Volume 73, Issue 8, August 2025.Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui +2 more
wiley +1 more source
The clustering of galaxies in hierarchical galaxy formation models [PDF]
, 2010 Galaxy clustering encodes information about the values of cosmological parameters and also about the physical processes behind galaxy formation and evolution. The GALFORM semi-analytical model is the theoretical approach we used to model galaxy formation.
KIM, HAN,SIK, Kim, Han Sik
core
A multi-wavelength study of powerful high redshift radio galaxies [PDF]
, 2021 Philosophiae Doctor - PhDWe present a new sample of distant powerful radio galaxies, in order to study their host-galaxy properties and provide targets for future observations of Hi absorption with new radio telescopes.
Marubini, Takalani
core +1 more source
Astronomische Nachrichten, Volume 346, Issue 5, June 2025.ABSTRACT Classification of galaxies, stars, and quasars using spectral data is fundamental to astronomy, but often relies heavily on redshift. This study evaluates the performance of 10 machine learning algorithms on SDSS data to classify these objects, with a particular focus on scenarios where redshift information is unavailable.
Debashis Chatterjee, Prithwish Ghosh
wiley +1 more source
The Properties of High Redshift Galaxies [PDF]
Astrophysics and Space Science, 2001 Summary of the Discussion Session on ``Evolution with Redshift'' at the Conference on The Evolution of Galaxies. I - Observational Clues, edited by J.M. Vilchez, G. Stasinska and E. Perez, Astrophysics and Space Science (Kluwer, The Netherlands). 10 Latex pages plus 2 encapsulated postscript figures.
Calzetti, D., Giavalisco, M.
openaire +2 more sources
Exploring the star formation histories of galaxies [PDF]
, 1999 In this thesis, I explore the star formation histories of both spiral and elliptical galaxies. In Part 1,1 present an in-depth study of the star formation histories of spiral galaxies with a wide range of properties. Optical and near-infrared colours are
Bell, Eric Findlay, Bell, E.F.
core
Lactea: Web‐Based Spectrum‐Preserving Multi‐Resolution Visualization of the GAIA Star Catalog
Computer Graphics Forum, Volume 44, Issue 3, June 2025.Abstract The explosion of data in astronomy has resulted in an era of unprecedented opportunities for discovery. The GAIA mission's catalog, containing a large number of light sources (mostly stars) with several parameters such as sky position and proper motion, is playing a significant role in advancing astronomy research and has been crucial in ...
Reem Alghamdi +3 more
wiley +1 more source
High‐Redshift Galaxy Outflows and the Formation of Dwarf Galaxies
The Astrophysical Journal, 2001 15 pages, 9 figures, accepted to the Astrophysical ...
Scannapieco, Evan +2 more
openaire +2 more sources