164 citations · 810 across the 72 of their papers we have counts for
7 papers · 1 filter
A Statistical Relation between Mass, Age and Velocity Dispersion in the Solar Neighborhood
Hossein Fatheddin, Sedighe Sajadian
The stellar kinematics of the Galactic disk are main factors for constraining disk formation and evolution processes in the Milky Way (MW) Galaxy. In this paper we investigate a st…
A search for transit timing variations in the HATS-18 planetary system
John Southworth, A. J. Barker, T. C. Hinse +23
HATS-18b is a transiting planet with a large mass and a short orbital period, and is one of the best candidates for the detection of orbital decay induced by tidal effects. We pres…
VLT, GROND and Danish Telescope observations of transits in the TRAPPIST-1 system
John Southworth, L. Mancini, M. Dominik +14
TRAPPIST-1 is an ultra-cool dwarf that hosts seven known transiting planets. We present photometry of the system obtained using three telescopes at ESO La Silla (the Danish 1.54-m…
Physical properties of near-Earth asteroid (2102) Tantalus from multi-wavelength observations
Agata Rożek, Stephen C. Lowry, Benjamin Rozitis +20
Between 2010 and 2017 we have collected new optical and radar observations of the potentially hazardous asteroid (2102)~Tantalus from the ESO NTT and Danish telescopes at the La Si…
Improved Aberth-Ehrlich root-finding algorithm and its further application for Binary Microlensing
Hossein Fatheddin, Sedighe Sajadian
In gravitational microlensing formalism and for modeling binary light curves, the key step is solving the binary lens equation. Currently, a combination of the Newton's and Laguerr…
Precision measurement of a brown dwarf mass in a binary system in the microlensing event OGLE-2019-BLG-0033/MOA-2019-BLG-035
A. Herald, A. Udalski, V. Bozza +89
Context. Brown dwarfs are poorly understood transition objects between stars and planets, with several competing mechanisms having been proposed for their formation. Mass measureme…
An Isolated Stellar-Mass Black Hole Detected Through Astrometric Microlensing
Kailash C. Sahu, Jay Anderson, Stefano Casertano +90
We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). We used the Hubble Space Telescope (HST) to carry out precise astrometry…