Results 41 to 50 of about 31,207 (206)

Cassini ISS astrometry of the Saturnian satellites: Tethys, Dione, Rhea, Iapetus, and Phoebe 2004-2012 [PDF]

, 2015
This work was mainly funded by European Community’s Seventh Framework Program (FP7/2007-2013) under grant agreement 263466 for the FP7-ESPaCE, and partially by UPMC-EMERGENCE (contract number EME0911), for which R.T. and V.L. are grateful. R.T.
Acton, Archinal, C. D. Murray, Canup, Canup, Charnoz, Collins, Cooper, Cooper, Cooper, Desmars, Gavrilov, Iess, Jacobson, Jacobson, Kaplan, Lainey, Mosqueira, Mosqueira, N. J. Cooper, Nimmo, Ogihara, Pasewaldt, R. Tajeddine, Sasaki, Sekine, Sinclair, Stetson, Tajeddine, Tajeddine, Thomas, V. Lainey, West, Willner, Willner, Zacharias   +35 more
core   +3 more sources

Radial Velocity Monitoring and Analysis of Gaia Astrometry of Selected Intermediate Mass Stars to Constrain Their Multiplicity Status

Astronomische Nachrichten, Volume 347, Issue 1, January 2026.
ABSTRACT We present new radial velocity measurements of 13 selected intermediate mass stars (2–6 M⊙). The measurements were performed between 29 April and 6 September 2024 at the University Observatory Jena using the échelle spectrograph FLECHAS. The radial velocity of eight stars was found to be constant during our spectroscopic monitoring, namely: 17
J. Bätz, M. Mugrauer, K.‐U. Michel, J. Reichert, A. Tschirschky, L. Pietsch, F. Edelmann, R. Neuhäuser   +7 more
wiley   +1 more source

Optimizing image processing for modern wide field surveys: enhanced data management based on the LSST science pipelines

Frontiers in Astronomy and Space Sciences
Introduction: In recent decades, numerous large survey projects have been initiated to enhance our understanding of the cosmos. Among these, the Vera C.
Yuanyu Hong, Yuanyu Hong, Chao Yang, Chao Yang, Miaomiao Zhang, Yanpeng Chen, Yanpeng Chen, Binyang Liu   +7 more
doaj   +1 more source

Astrometric detection of exoplanets from the ground

, 2013
Astrometry is a powerful technique to study the populations of extrasolar planets around nearby stars. It gives access to a unique parameter space and is therefore required for obtaining a comprehensive picture of the properties, abundances, and ...
Lazorenko, P. F., Mérand, A., Queloz, D., Sahlmann, J., Ségransan, D., Woillez, J.   +5 more
core   +1 more source

The orbits of the quadruple star system 88 Tau A from PHASES differential astrometry and radial velocity [PDF]

, 2007
We have used high precision differential astrometry from the Palomar High-precision Astrometric Search for Exoplanet Systems (PHASES) project and radial velocity measurements covering a time-span of 20 years to determine the orbital parameters of the 88 ...
Balega I. I., Benjamin F. Lane, Bernard F. Burke, Bopp B. W., Burkhart C., Fabrycky D., Francis C. Fekel, Huenemoerder D. P., M. M. Colavita, M. Shao, Maciej Konacki, Matthew W. Muterspaugh, Michael Williamson, S. R. Kulkarni, Scarfe C. D., Schoeller M., Stanley Browne, Strassmeier K. G.   +17 more
core   +3 more sources

PERICLES: A Set of Empirical Rotational Isochrones Modeled on Cool Dwarfs in Open Clusters and Wide Binaries

Astronomische Nachrichten, Volume 347, Issue 1, January 2026.
ABSTRACT Isochrones, equal‐age curves, are widely used in astrophysics to estimate stellar ages. Classical stellar parameters are, however, very limited in their usability for main sequence stars because of their weak age‐dependence. Here, rotation period measurements provide complementary information.
David Gruner, Sydney A. Barnes
wiley   +1 more source

The Orbits of Uranus, Its Satellites and Rings, the Gravity Field of the Uranian System, and the Orientation of the Poles of Uranus and Its Satellites

The Astronomical Journal
R. A. Jacobson determined the orbits of the Uranian satellites, the masses of Uranus and its satellites, and the orientation of the pole of Uranus from Earth-based astrometry, Earth-based ring occultations, and observations acquired with the Voyager 2 ...
Robert A. Jacobson, Ryan S. Park
doaj   +1 more source

Determination of Orbital Elements and Ephemerides using the Geocentric Laplace’s Method

Journal of Astronomy and Space Sciences, 2020
This paper presents a methodology for Initial Orbit Determination (IOD) based on a modification of the Laplace’s geocentric method. The orbital elements for Near-Earth asteroids (1864) Daedalus, 2003 GW, 2019 JA8, a Hungaria-type asteroid (4690 ...
Daniela Espitia, Edwin A. Quintero, Ivan D. Arellano-Ramírez   +2 more
doaj   +1 more source

Astrometric performance of the Gemini multi-conjugate adaptive optics system in crowded fields [PDF]

, 2014
The Gemini Multi-conjugate adaptive optics System (GeMS) is a facility instrument for the Gemini-South telescope. It delivers uniform, near-diffraction-limited image quality at near-infrared wavelengths over a 2 arcminute field of view. Together with the
Ammons, S. Mark, Carrasco, Eleazar R., Lassalle, Emmanuel, Lu, Jessica R., Neichel, Benoit, Rigaut, Francois   +5 more
core   +5 more sources

Payload Selection Scheme for a Fast‐Response Planetary Defense Scouting Mission: The Satis CubeSat Study

Advances in Astronomy, Volume 2026, Issue 1, 2026.
The continued detection of near‐Earth asteroids with postulated close encounters with Earth is a clear motivation for planetary defense–driven mission designs. Fast reconnaissance in an imminent threat scenario (i.e., less than a few years upon impact) is crucial to gain information about an asteroid potentially impacting the Earth in the near future ...
Markus Patzek, Birgit Ritter, Carsten Güttler, Moritz Goldmann, Özgür Karatekin, Detlef Koschny, Richard Moissl, Valerio Fogliano, Francisco Cabral, Roger Walker, Bastian Gundlach, Michael Kueppers   +11 more
wiley   +1 more source