132 citations · 395 across the 7 of their papers we have counts for
6 papers · 1 filter
How eclipse time variations, eclipse duration variations, and radial velocities can reveal S-type planets in close eclipsing binaries
M. Oshagh, R. Heller, S. Dreizler
While about a dozen transiting planets have been found in wide orbits around an inner, close stellar binary (so-called "P-type planets"), no planet has yet been detected orbiting o…
Can stellar activity make a planet seem misaligned?
M. Oshagh, S. Dreizler, N. C. Santos +2
Several studies have shown that the occultation of stellar active regions by the transiting planet can generate anomalies in the high-precision transit light curves, and these anom…
Revisiting the correlation between stellar activity and planetary surface gravity
P. Figueira, M. Oshagh, V. Zh. Adibekyan +1
Aims: We re-evaluate the correlation between planetary surface gravity and stellar host activity as measured by the index log(). This correlation, previously identified by…
Improvements on analytic modelling of stellar spots
M. Montalto, G. Boué, M. Oshagh +3
In this work we present the solution of the stellar spot problem using the Kelvin-Stokes theorem. Our result is applicable for any given location and dimension of the spots on the…
Impact of occultations of stellar active regions on transmission spectra: Can occultation of a plage mimic the signature of a blue sky?
M. Oshagh, N. C. Santos, D. Ehrenreich +4
Transmission spectroscopy during planetary transits, which is based on the measurements of the variations of planet-to-star radius ratio as a function of wavelength, is a powerful…
The HARPS search for southern extra-solar planets XXXV. The interesting case of HD41248: stellar activity, no planets?
N. C. Santos, A. Mortier, J. P. Faria +21
The search for planets orbiting metal-poor stars is of uttermost importance for our understanding of the planet formation models. However, no dedicated searches have been conducted…