Results 51 to 60 of about 342,164 (393)
Artificial Star Test for Crowded Field CCD Photometry
Open Astronomy, 2015 A new method of performing an artificial star test (AST) for crowded field stellar CCD photometry is proposed. This AST method is superior in the cases when it is necessary to account for varying photometric quality across the study field, arising due to
Stonkutė R., Vansevičius V.
doaj +1 more source
Improved Point Source Detection in Crowded Fields using Probabilistic Cataloging [PDF]
, 2017 Cataloging is challenging in crowded fields because sources are extremely covariant with their neighbors and blending makes even the number of sources ambiguous. We present the first optical probabilistic catalog, cataloging a crowded (~0.1 sources per pixel brighter than 22nd magnitude in F606W) Sloan Digital Sky Survey r band image from M2 ...
arxiv +1 more source
The GUSBAD Catalog of Gamma-Ray Bursts [PDF]
Astrophys.J. 616 (2004) 1072-1077, 2004 The GUSBAD catalog of gamma-ray bursts (GRBs) is based on archival BATSE DISCLA data covering the full 9.1 years of the Compton Gamma Ray Observatory mission. The catalog contains 2204 GRBs, including 589 bursts not listed in the Current BATSE Burst Catalog.
arxiv +1 more source
Are optically-selected QSO catalogs biased ? [PDF]
, 1997 A thorough study of QSO-galaxy correlations has been done on a region close to the North Galactic Pole using a complete subsample of the optically selected CFHT/MMT QSO survey and the galaxy catalog of Odewahn and Aldering (1995).
Benitez, N. +2 more
core +2 more sources
ON THE RELATIONSHIP OF UC H ii REGIONS AND CLASS II METHANOL MASERS. I. SOURCE CATALOGS [PDF]
, 2016 We conducted Very Large Array C-configuration observations to measure positions and luminosities of Galactic Class II 6.7 GHz methanol masers and their associated ultra-compact H ii regions.
Bo Hu +7 more
semanticscholar +1 more source
Building IoT-Based Applications for Smart Cities: How Can Ontology Catalogs Help?
IEEE Internet of Things Journal, 2018 The Internet of Things (IoT) plays an ever-increasing role in enabling smart city applications. An ontology-based semantic approach can help improve interoperability between a variety of IoT-generated as well as complementary data needed to drive these ...
A. Gyrard, Antoine Zimmermann, A. Sheth
semanticscholar +1 more source
Approximate methods for the generation of dark matter halo catalogs in the age of precision cosmology [PDF]
, 2016 Precision cosmology has recently triggered new attention on the topic of approximate methods for the clustering of matter on large scales, whose foundations date back to the period from the late 1960s to early 1990s.
P. Monaco
semanticscholar +1 more source
Determination of Abundances of Chemical Elements in Open Star Clusters of the Galaxy
Open Astronomy, 2016 Spectroscopic determinations of the relative abundances of chemical elements produced in different nuclear-synthesis processes, [el/Fe], are collected for 90 open star clusters of the Galaxy using data from 109 papers published between 1991 and 2015 ...
Gozha M. L. +2 more
doaj +1 more source
CANDELS MULTI-WAVELENGTH CATALOGS: SOURCE IDENTIFICATION AND PHOTOMETRY IN THE CANDELS COSMOS SURVEY FIELD [PDF]
, 2016 We present a multi-wavelength photometric catalog in the COSMOS field as part of the observations by the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey.
H. Nayyeri +43 more
semanticscholar +1 more source
Astronomical Surveys and Big Data
Open Astronomy, 2016 Recent all-sky and large-area astronomical surveys and their catalogued data over the whole range of electromagnetic spectrum, from γ-rays to radio waves, are reviewed, including such as Fermi-GLAST and INTEGRAL in γ-ray, ROSAT, XMM and Chandra in X-ray,
Mickaelian Areg M.
doaj +1 more source