Results 101 to 110 of about 4,646,519 (213)

Optical infrared sky survey

open access: yesThe Astronomical Journal, 1978
A description is presented of a photographic survey of the northern sky currently underway at Steward Observatory. The survey is being conducted at a principal bandpass of 8000-9000 A supplemented by a V bandpass. The survey is the first of its type conducted using a small (20-in.
openaire   +1 more source

Second-timescale Glints from Satellites and Space Debris Detected with Tomo-e Gozen

open access: yesThe Astrophysical Journal
A search for second-timescale optical transients is one of the frontiers of time-domain astronomy. However, it has been pointed out that reflections of sunlight from Earth-orbiting objects can also produce second-timescale “glints.” We conducted wide ...
Masaomi Tanaka   +19 more
doaj   +1 more source

Look behind you! The past can contribute uniquely to the future

open access: yesEPJ Web of Conferences, 2017
The surveys which are the chief foci of this meeting are almost exclusively concerned with recent and upcoming electronic surveys. But the practice of surveying the night sky is not new; some of the first coordinated observatory activities involved ...
Griffin Elizabeth
doaj   +1 more source

Identification of Carbon Stars from LAMOST DR7

open access: yesThe Astrophysical Journal Supplement Series
Carbon stars are excellent kinematic tracers of galaxies and play important roles in understanding the evolution of the Galaxy. Therefore, it is worthwhile to search for them in a large number of spectra.
Linlin Li   +8 more
doaj   +1 more source

TRANSLIENT: Detecting Transients Resulting from Point-source Motion or Astrometric Errors

open access: yesThe Astronomical Journal
Detection of moving sources over a complicated background is important for several reasons. First is measuring the astrophysical motion of the source. Second is that such motion resulting from atmospheric scintillation, color refraction, or astrophysical
Ofer Springer   +12 more
doaj   +1 more source

Gravity-selected Cluster Samples: A New Take on the Compton-y–Mass Relation

open access: yesThe Astrophysical Journal
We investigate the scaling relation between the Compton- y parameter and mass in a gravity-selected sample of galaxy clusters, selected based on their gravitational lensing effects on background galaxies. Unlike intracluster medium (ICM)−selected samples,
S. Andreon, M. Radovich
doaj   +1 more source

Cosmic Multipoles in Galaxy Surveys II: Comparing Different Methods in Assessing the Cosmic Dipole

open access: yesThe Open Journal of Astrophysics
We present a comparative analysis of estimators and Bayesian methods for determining the number count dipole from cosmological surveys. The increase in discordance between the number count dipole and the CMB’s kinematic dipole has presented a challenge ...
Vasudev Mittal   +2 more
doaj   +1 more source

Sky surveys with ASCA-Deep Sky Survey

open access: yesSky surveys with ASCA-Deep Sky Survey
著者人数:11名 資料番号 ...
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Sky surveys with ASCA-Large Sky Survey

open access: yesSky surveys with ASCA-Large Sky Survey
著者人数:11名 資料番号 ...
openaire  

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