Results 61 to 70 of about 206,857 (160)

Synergies between exoplanet surveys and variable star research

EPJ Web of Conferences, 2017
With the discovery of the first transiting extrasolar planetary system back in 1999, a great number of projects started to hunt for other similar systems. Because the incidence rate of such systems was unknown and the length of the shallow transit events
Kovacs Geza
doaj   +1 more source

Radio Frequency Interference Mitigation

, 2017
Radio astronomy observational facilities are under constant upgradation and development to achieve better capabilities including increasing the time and frequency resolutions of the recorded data, and increasing the receiving and recording bandwidth.
An, Tao, Chen, Xiao, Lao, Bao-Qiang, Mohan, P.   +3 more
core   +1 more source

Improved Empirical Backgrounds for JWST NIRISS Image/Wide-field Slitless Spectroscopy Data Reduction

The Astronomical Journal
The Near Infrared Imager and Slitless Spectrograph (NIRISS) on the James Webb Space Telescope (JWST) is a versatile instrument for collecting imaging and wide-field slitless spectroscopy (WFSS) data for surveys of galaxy clusters, emission-line galaxies,
Raphael E. Hviding, Ivelina G. Momcheva, Leonardo Clarke   +2 more
doaj   +1 more source

Small Explorer project: Submillimeter Wave Astronomy Satellite (SWAS). Mission operations and data analysis plan [PDF]

The Mission Operations and Data Analysis Plan is presented for the Submillimeter Wave Astronomy Satellite (SWAS) Project. It defines organizational responsibilities, discusses target selection and navigation, specifies instrument command and data ...
Melnick, Gary J.
core   +1 more source

KMOS Data Flow: Reconstructing Data Cubes in One Step

, 2010
KMOS is a multi-object near-infrared integral field spectrometer with 24 deployable pick-off arms. Data processing is inevitably complex. We discuss specific issues and requirements that must be addressed in the data reduction pipeline, the calibration ...
Berbel, Alex Agudo, Davies, Richard, Ott, Thomas, Schreiber, Natascha Foerster, Wiezorrek, Erich   +4 more
core   +1 more source

Improving Radial Velocities by Marginalizing over Stars and Sky: Achieving 30 m s−1 RV Precision for APOGEE in the Plate Era

The Astronomical Journal
The radial velocity catalog from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) is unique in its simultaneously large volume and high precision as a result of its decade-long survey duration, multiplexing (600 fibers), and spectral ...
Andrew K. Saydjari, Douglas P. Finkbeiner, Adam J. Wheeler, Jon A. Holtzman, John C. Wilson, Andrew R. Casey, Sophia Sánchez-Maes, Joel R. Brownstein, David W. Hogg, Michael R. Blanton   +9 more
doaj   +1 more source

Searching for Short-period Variables in M31: Method and Catalogs

The Astrophysical Journal Supplement Series
Utilizing high-cadence and continuous g - and r -band data over three nights acquired from the 3.6 m Canada–France–Hawaii Telescope, aiming to find short-duration microlensing events, we conduct a systematic search for variables, transients, and ...
Hongrui Gu, Haibo Yuan, Subo Dong, Chenfa Zheng, Shenzhe Cui, Yi Ren, Haozhu Fu, Yang Huang, Zhou Fan   +8 more
doaj   +1 more source

Data-driven Radiative Hydrodynamics Simulations of the Solar Photosphere Using Physics-informed Neural Networks: Proof of Concept

The Astrophysical Journal
Current, realistic numerical simulations of the solar atmosphere reproduce observations in a statistical sense; they do not replicate observations such as a movie of solar granulation.
Christoph U. Keller
doaj   +1 more source

A Spectrum Sharing Paradigm for GSO Satellite System and Radio Astronomy System

IEEE Access, 2019
Geostationary orbit (GSO) satellite communication systems (SCSs) play an important role in nowadays satellite communication. Orbiting in the Clarke Belt, the GSO satellites provide voice, video, Internet access, and other data services to the users all ...
Yucheng Dai, Hlaing Minn
doaj   +1 more source

Application of Neural Networks to the study of stellar model solutions

, 2012
Artificial neural networks (ANN) have different applications in Astronomy, including data reduction and data mining. In this work we propose the use ANNs in the identification of stellar model solutions.
Andreon, Bailer-Jones, Bishop, Böhm-Vitense, Casagrande, Cunha, Duda, F.J.G. Pinheiro, Fernandes, Fernandes, Haykin, Hillenbrand, J. Fernandes, Johnson, Lastennet, Lastennet, Mitchell, Morel, Pinheiro, Popper, Popper, R. Ribeiro, T. Simas, Tagliaferri   +23 more
core   +2 more sources