Results 41 to 50 of about 4,646,519 (213)
RELIABLE IDENTIFICATIONS OF ACTIVE GALACTIC NUCLEI FROM THE WISE, 2MASS, AND ROSAT ALL-SKY SURVEYS [PDF]
, 2012 We have developed the ‘‘SIX’’ statistic to identify bright, highly likely active galactic nucleus (AGN) candidates solely on the basis of Wide-field Infrared Survey Explorer (WISE), Two Micron All-Sky Survey (2MASS), and ROSAT all-sky survey (RASS) data.
R. Edelson, M. Malkan
semanticscholar +1 more source
Infrared composition of the Large Magellanic Cloud
Earth, Planets and Space, 2013 The evolution of galaxies and the history of star formation in the Universe are among the most important topics in today’s astrophysics. Especially, the role of small, irregular galaxies in the star-formation history of the Universe is not yet clear ...
M. Siudek +5 more
doaj +1 more source
Real-Time Classification of Transient Events in Synoptic Sky Surveys [PDF]
Proceedings of the International Astronomical Union, 2011 An automated rapid classification of the transient events detected in modern synoptic sky surveys is essential for their scientific utility and effective follow-up when resources are scarce.
A. Mahabal +8 more
semanticscholar +1 more source
Preatmospheric Detection of a Meter-sized Earth Impactor
The Planetary Science Journal, 2023 On 2020 September 18 U.S. Government (USG) sensors detected a bolide with peak bolometric magnitude of −19 over the Western Pacific. The impact was also detected by the Geostationary Lightning Mapper instrument on the GOES-17 satellite and infrasound ...
David L. Clark +5 more
doaj +1 more source
Revised Catalog of GALEX Ultraviolet Sources. I. The All-Sky Survey: GUVcat_AIS [PDF]
, 2017 The Galaxy Evolution Explorer (GALEX) imaged the sky in two ultraviolet (UV) bands, far-UV (FUV, λeff ∼ 1528 Å), and near-UV (NUV, λeff ∼ 2310 Å), delivering the first comprehensive sky surveys at these wavelengths.
L. Bianchi, B. Shiao, D. Thilker
semanticscholar +1 more source
Six More Ultra-faint Milky Way Companions Discovered in the DECam Local Volume Exploration Survey
The Astrophysical Journal, 2023 We report the discovery of six ultra-faint Milky Way satellites identified through matched-filter searches conducted using Dark Energy Camera (DECam) data processed as part of the second data release of the DECam Local Volume Exploration (DELVE) survey ...
W. Cerny +33 more
doaj +1 more source
Searching for New Supernova Remnant Candidates from the VTSS Survey
Cumhuriyet Science Journal, 2022 The Virginia Tech Spectral Line Survey (VTSS) Galactic Plane Hydrogen-Alpha Survey has the strong ability to search and discover many different types of objects that cannot be identified clearly on red plates and by other Multi-Wavelength Sky Surveys ...
Elif Beklen
doaj +1 more source
Electronic Optical Sky Surveys [PDF]
Symposium - International Astronomical Union, 1997 The introduction of of Charge Coupled Devices (CCDs) in the middle 1970s provided astronomy with nearly perfect (linear, high-sensitivity, low-noise, high dynamic-range, digital) optical detectors. Unfortunately, restrictions imposed by CCD production and cost has typically limited their use to observations of relatively small fields.
openaire +1 more source
Galactic Stellar Populations in the Era of the Sloan Digital Sky Survey and Other Large Surveys [PDF]
, 2012 Studies of stellar populations, understood to mean collections of stars with common spatial, kinematic, chemical, and/or age distributions, have been reinvigorated during the past decade by the advent of large-area sky surveys such as the Sloan Digital ...
Ž. Ivezić, T. Beers, M. Jurić
semanticscholar +1 more source
60 Microlensing Events from the Three Years of Zwicky Transient Facility Phase One
The Astrophysical Journal, 2023 Microlensing events have historically been discovered throughout the Galactic bulge and plane by surveys designed solely for that purpose. We conduct the first multiyear search for microlensing events on the Zwicky Transient Facility (ZTF), an all-sky ...
Michael S. Medford +4 more
doaj +1 more source