125 citations · 1.3k across the 85 of their papers we have counts for
18 papers · 1 filter
How far can we trust published TESS periods?
Zdeněk Mikulášek, Marek Skarka
Possible inaccuracies in the determination of periods from short-term time series caused by disregard of the real course of light curves and instrumental trends are documented on t…
The first view of Scuti and Doradus stars with the TESS mission
V. Antoci, M. S. Cunha, D. M. Bowman +63
We present the first asteroseismic results for Scuti and Doradus stars observed in Sectors 1 and 2 of the TESS mission. We utilise the 2-min cadence TESS data for a sample…
TOI-503: The first known brown dwarf-Am star binary from the TESS mission
Ján Šubjak, Rishikesh Sharma, Theron W. Carmichael +76
We report the discovery of an intermediate-mass transiting brown dwarf, TOI-503b, from the TESS mission. TOI-503b is the first brown dwarf discovered by TESS and orbits a metallic-…
Extended Aperture Photometry of K2 RR Lyrae stars
Emese Plachy, László Molnár, Attila Bódi +6
The \textit{Kepler} space telescope observed thousands of RR Lyrae stars in the K2 mission. In this paper we present our photometric solutions using extended apertures in order to…
Lack of close-in, massive planets of main-sequence A-type stars from Kepler
Silvia Sabotta, Petr Kabath, Judith Korth +5
Some theories of planet formation and evolution predict that intermediate-mass stars host more hot Jupiters than Sun-like stars, others reach the conclusion that such objects are v…
It takes two planets in resonance to tango around K2-146
Kristine W. F. Lam, Judith Korth, Kento Masuda +51
K2-146 is a cool, 0.358 M_sun dwarf that was found to host a mini-Neptune with a 2.67-days period. The planet exhibited strong transit timing variations (TTVs) of greater than 30 m…
High-resolution transmission spectroscopy of four hot inflated gas giant exoplanets
Jiri Zak, Petr Kabath, Henri M. J. Boffin +2
The technique of transmission spectroscopy allows us to constrain the chemical composition of the atmospheres of transiting exoplanets. It relies on very high signal-to-noise spect…
Greening of the Brown Dwarf Desert. EPIC 212036875 b -- a 51 M object in a 5 day orbit around an F7 V star
Carina M. Persson, Szilárd Csizmadia, Alexander J. Mustill +55
Our aim is to investigate the nature and formation of brown dwarfs by adding a new well-characterised object to the small sample of less than 20 transiting brown dwarfs. One brown…
Synergy between professional and amateur astronomers
M. Skarka, P. Kabáth
Since the CCD technique became financially reachable for amateur astronomers, they can cover topics of professional science. Mainly in the time-domain astronomy, such as variable s…
HD 99458: First time ever Ap-type star as a Scuti pulsator in a short period eclipsing binary?
M. Skarka, P. Kabáth, E. Paunzen +18
We present the discovery of a unique object, a chemically peculiar Ap-type star showing Scuti pulsations which is bound in an eclipsing binary system with an orbital period sho…
Rotation and pulsation in Ap stars: first light results from TESS sectors 1 and 2
M. S. Cunha, V. Antoci, D. L. Holdsworth +36
We present the first results from the Transiting Exoplanet Survey Satellite (TESS) on the rotational and pulsational variability of magnetic chemically peculiar A-type stars. We an…
Candidates for RR~Lyrae in binary systems from the OGLE Galactic bulge survey
Z. Prudil, M. Skarka, J. Liška +2
We present 20 newly discovered candidates for binary systems with an RR~Lyrae companion. Using the photometric data from the Optical Gravitational Lensing Experiment (OGLE) and Kor…
On the Oosterhoff dichotomy in the Galactic bulge: II. kinematical distribution
Z. Prudil, I. Dékány, E. K. Grebel +3
We present a kinematical study of RR~Lyrae stars associated with two Oosterhoff groups in the Galactic bulge. We used data published in the first paper of the series, plus proper m…
The role of small telescopes as a ground-based support for exoplanetary space missions
P. Kabath, M. Skarka, S. Sabotta +1
Small telescopes equiped with modern instrumentation are gaining on importance, especially, in the era of exoplanetary space missions such as TESS, PLATO and ARIEL. Crucial part of…
Detection limits of exoplanetary atmospheres with 2-m class telescopes
P. Kabath, J. Zak, H. M. J. Boffin +3
Transmission spectroscopy is an important technique to probe the atmospheres of exoplanets. With the advent of TESS and, in the future, of PLATO, more and more transiting planets a…
The Transiting Multi-planet System HD15337: Two Nearly Equal-mass Planets Straddling the Radius Gap
Davide Gandolfi, Luca Fossati, John H. Livingston +53
We report the discovery of a super-Earth and a sub-Neptune transiting the star HD 15337 (TOI-402, TIC 120896927), a bright (V=9) K1 dwarf observed by the Transiting Exoplanet Surve…
Transit timing variations, radial velocities and long-term dynamical stability of the system Kepler-410
Pavol Gajdoš, Martin Vaňko, Theodor Pribulla +6
Transit timing variations of Kepler-410Ab were already reported in a few papers. Their semi-amplitude is about 14.5 minutes. In our previous paper, we found that the transit timing…
On the Oosterhoff dichotomy in the Galactic bulge: I. spatial distribution
Z. Prudil, I. Dékány, M. Catelan +3
We present a study of the Oosterhoff (Oo) dichotomy in the Galactic bulge using 8\,141 fundamental mode RR~Lyrae stars. We used public photometric data from the Optical Gravitation…