Results 91 to 100 of about 47,826 (245)
Photometric Properties of Low-Redshift Galaxy Clusters [PDF]
Symposium - International Astronomical Union, 2005 A recent comprehensive photometric survey of 45 low-z X-ray selected Abell clusters (López-Cruz 1997) has measured significant variations in the faint end slope of the luminosity function (LF). This result indicates that dwarf galaxies (dGs) comprise a different fraction of the cluster population as a function cluster environment.
Barkhouse, W. A. +2 more
openaire +2 more sources
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
Error analysis of the photometric redshift technique [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 We present a calculation of the systematic component of the error budget in the photometric redshift technique. We make use of it to describe a simple technique that allows for the assignation of confidence limits to redshift measurements obtained through photometric methods. We show that our technique, through the calculation of a redshift probability
Fernandez-Soto, A. +4 more
openaire +2 more sources
The zCOSMOS 10k-Bright Spectroscopic Sample [PDF]
, 2009 We present spectroscopic redshifts of a large sample of galaxies with I_(AB) < 22.5 in the COSMOS field, measured from spectra of 10,644 objects that have been obtained in the first two years of observations in the zCOSMOS-bright redshift survey.
Abbas, Umi +65 more
core +3 more sources
ChemPhotoChem, Volume 9, Issue 5, May 2025.We introduce the three‐angle method for broadband fluorescence upconversion spectroscopy. This method involves recording and averaging spectrally resolved upconversion signals at three crystal angles, achieving broader spectral coverage and better signal‐to‐noise levels.
Marco Kapitzke +4 more
wiley +1 more source
Bayesian photometric redshifts for weak-lensing applications [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 The next generation of weak gravitational lensing surveys is capable of generating good measurements of cosmological parameters, provided that, amongst other requirements, adequate redshift information is available for the background galaxies that are measured.
Edmondson, E, Miller, L, Wolf, C
openaire +2 more sources
, 2008 We present a structure finding algorithm designed to identify galaxy groups in photometric redshift data sets: the probability friends-of-friends (pFoF) algorithm.
Abazajian K. +7 more
core +2 more sources
Galaxy clustering with photometric surveys using PDF redshift information [PDF]
, 2016 Photometric surveys produce large-area maps of the galaxy distribution, but with less accurate redshift information than is obtained from spectroscopic methods.
Asorey, J. +4 more
core +3 more sources
Advanced Science, Volume 12, Issue 16, April 24, 2025.This study leverages the complementary advantages of label‐free nanoplasmonic biosensing and multichannel fluorescence microscopy to develop a multimodal imaging system for real‐time, spatiotemporal monitoring of cellular activities at the single‐cell level.
Saeid Ansaryan +5 more
wiley +1 more source
Baryon acoustic oscillations with the cross-correlation of spectroscopic and photometric samples
, 2013 The baryon acoustic oscillation (BAO) experiment requires a sufficiently dense sampling of large-scale structure tracers with spectroscopic redshift, which is observationally expensive especially at high redshifts $z\simgt 1$.
Nishizawa, Atsushi J. +2 more
core +1 more source