Results 21 to 30 of about 1,218,885 (321)

Designing an evolutionary optimal washout filter based on genetic algorithm

Aviation, 2022
This paper aims to design a reliable filter that can transform the actual motion of a flight simulator maneuver into a logical and understandable movement for its workspace.
Alireza Gharib, Masoud Goharimanesh, Ali Koochi, Mohammad Reza Gharib   +3 more
doaj   +1 more source

A 1500 deg2 near infrared proper motion catalogue from the UKIDSS Large Area Survey [PDF]

, 2013
The United Kingdom Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) began in 2005, with the start of the UKIDSS programme as a 7 year effort to survey roughly 4000 deg2 at high Galactic latitudes in Y, J, H and K bands.
A. H. Andrei, Abad, Abell, Andrei, Andrei, B. Burningham, Bakos, Becklin, Burgasser, Burgasser, Burgasser, Burningham, Burningham, Burningham, Casali, Casali, Casewell, Catalán, Collins, Cruz, Cruz, D. J. Pinfield, Day-Jones, Deacon, Deacon, Deacon, Dierickx, Dupuy, Dye, Epchtein, Faherty, Faherty, Feast, Finlator, Goldman, Gomes, Greenstein, H. R. A. Jones, Hambly, Hansen, Hawley, Hewett, Høg, Kharchenko, Kilic, Kilic, Kilic, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Kirkpatrick, Knapp, Latham, Lawrence, Leggett, Leggett, Leggett, Leggett, Leigh Smith, Looper, Luyten, Luyten, Lépine, Lépine, Marocco, Mason, Meng, Munn, Murray, P. W. Lucas, Pinfield, Pinfield, Pinfield, R. L. Smart, Reid, Reid, Reid, Roeser, S. Catalán, Salim, Sayres, Schilbach, Scholz, Sheppard, Skrutskie, Smith, Taylor, Taylor, Vick, Warren, West, West, Zhang, Zhang   +96 more
core   +3 more sources

Universal quantum modifications to general relativistic time dilation in delocalised clocks [PDF]

Quantum, 2020
The theory of relativity associates a proper time with each moving object via its world line. In quantum theory however, such well-defined trajectories are forbidden. After introducing a general characterisation of quantum clocks, we demonstrate that, in
Shishir Khandelwal, Maximilian P.E. Lock, Mischa P. Woods   +2 more
doaj   +1 more source

Sunspot motion in a recurrent region as a sub-photospheric circulation tracer [PDF]

Geofísica Internacional, 2002
A second order polynomial regression of the sunspot motion in a recurrent group shows a smooth displacement of the sub-photospheric field source. This displacement is seen in the regular motion of the longer-lived spots of the group.
Giselle Gil Moreno, Jorge Pérez Doval, Ramón E. Rodríguez Taboada   +2 more
doaj  

A new low proper motion catalogue of bright M-dwarfs

EPJ Web of Conferences, 2013
We present a new catalogue of 1336 bright (K < 9), low proper motion, M dwarfs from the PPMXL catalogue. These M dwarfs cover the entire sky but the galactic plane was excluded to avoid crowding and reddened stars. Spectra taken of a random sample of the
Pinfield David, Frith James
doaj   +1 more source

Cataclysmic Variables in the SUPERBLINK Proper Motion Survey [PDF]

, 2014
We have discovered a new high proper motion cataclysmic variable (CV) in the SUPERBLINK proper motion survey, which is sensitive to stars with proper motions greater than 40 mas/yr.
Lépine, Sébastien, Skinner, Julie N., Thorstensen, John R.   +2 more
core   +3 more sources

What can Gaia proper motions tell us about Milky Way dwarf galaxies?

, 2014
We present a proper-motion study on models of the dwarf spheroidal galaxy Sculptor, based on the predicted proper-motion accuracy of Gaia measurements. Gaia will measure proper motions of several hundreds of stars for a Sculptor-like system. Even with an
Breddels, Maarten, Helmi, Amina, Jin, Shoko   +2 more
core   +1 more source

Evaluation of the astrometric capability of Multi-Channel Imager and simulated calculation of proper motion of M31

Frontiers in Astronomy and Space Sciences
Introduction: The Multi-Channel Imager (MCI), one of the back-end modules of the future China Space Station Telescope (CSST), is designed for high-precision spacebased astronomical observations.
Wenfeng Fang, Wenfeng Fang, Yong Yu, Yong Yu, Xiyan Peng, Zhaojun Yan, Yanzhen Hao, Yanzhen Hao, Huanyuan Shan, Zhaoxiang Qi, Zhaoxiang Qi, Shilong Liao, Shilong Liao, Zhenghong Tang, Zhenghong Tang, Qiqi Wu, Qiqi Wu, Zhensen Fu, Zhensen Fu   +18 more
doaj   +1 more source

A catalogue of bright (K <9) M dwarfs [PDF]

, 2013
Using the Position and Proper Motion Extended-L (PPMXL) catalogue, we have used optical and near-infrared colour cuts together with a reduced proper motion cut to find bright M dwarfs for future exoplanet transit studies.
Barnes, J. R., Brown, C., Cappetta, M., Frith, J., Jones, H.R.A., Kuznetsov, M. K., Marocco, F., Martin, E. L., Pavlenko, Y., Pinfield, D.J., Tata, R.   +10 more
core   +2 more sources

Central Proper-Motion Kinematics of NGC 6752

, 2003
We present proper motions derived from WFPC2 imaging for stars in the core of the peculiar globular cluster NGC 6752. The central velocity dispersion in both components of the proper motion is 12 km/s.
C. D. Bailyn, Dubath P., G. A. Drukier, Shaklan S., T. M. Girard, W. F. van Altena   +5 more
core   +1 more source