164 citations · 810 across the 72 of their papers we have counts for
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Finite-Lens Effect on Self-Lensing in detached White Dwarfs-Main Sequence Binary Systems
Sedighe Sajadian, Hossein Fatheddin
In an edge-on and detached binary system, including a white dwarf (WD) and a main-sequence star (WDMS), when the source star is passing behind the compact companion its light is be…
Simulating Self-Lensing and Eclipsing Signals due to Detached Compact Objects in the TESS Light Curves
Sedighe Sajadian, Niayesh Afshordi
A fraction of Galactic stars have compact companions which could be white dwarfs (WDs), neutron stars (NSs) or stellar-mass black holes (SBHs). In a detached and edge-on binary sys…
Simulating Gravitational Microlensing Events by TESS: Predictions on Statistics and Properties
Sedighe Sajadian, Atousa Kalantari, Hossein Fatheddin +1
We study the statistics and properties of microlensing events that can be detected by the Transiting Exoplanet Survey Satellite(TESS) based on Monte Carlo simulations. We simulate…
Digging deeper into the dense Galactic globular cluster Terzan 5 with Electron-Multiplying CCDs. Variable star detection and new discoveries
R. Figuera Jaimes, M. Catelan, K. Horne +20
Context. High frame-rate imaging was employed to mitigate the effects of atmospheric turbulence (seeing) in observations of globular cluster Terzan 5. Aims. High-precision time-ser…
Singular Spectrum Analysis of Exoplanetary Transits
Hossein Fatheddin, Sedighe Sajadian
Transit photometry is currently the most efficient and sensitive method for detecting extrasolar planets (exoplanets) and a large majority of confirmed exoplanets have been detecte…
Gaia21blx: Complete resolution of a binary microlensing event in the Galactic disk
P. Rota, V. Bozza, M. Hundertmark +22
Context. Gravitational microlensing is a method that is used to discover planet-hosting systems at distances of several kiloparsec in the Galactic disk and bulge. We present the an…
Parallax Effect in Microlensing Events due to Free-Floating Planets
Parisa Sangtarash, Sedighe Sajadian
One of most important applications of microlensing observations is detecting free-floating planets(FFPs). The time scale of microlensing due to FFPs () is short (a few d…
Star-spot activity, orbital obliquity, transmission spectrum, physical properties, and TTVs of the HATS-2 planetary system
F. Biagiotti, L. Mancini, J. Southworth +23
Our aim in this paper is to refine the orbital and physical parameters of the HATS-2 planetary system and study transit timing variations and atmospheric composition thanks to tran…