851 citations · 9.7k across the 108 of their papers we have counts for
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Temperature and Distance Dependence of Tidal Circularization in Close Binaries: A Catalog of Eclipsing Binaries in the Southern Hemisphere Observed by the TESS Satellite
Anders B. Justesen, Simon Albrecht
Tidal forces are important for understanding how close binary stars and compact exoplanetary systems form and evolve. However, tides are difficult to model and significant uncertai…
The spin-orbit alignment of visual binaries
A. B. Justesen, S. Albrecht
The angle between the stellar spin-axis and the orbital plane of a stellar or planetary companion has important implications for the formation and evolution of such systems. A stud…
Asteroseismology of the Multiplanet System K2-93
Mikkel N. Lund, Emil Knudstrup, Victor Silva Aguirre +14
We revisit the analysis of the bright multiplanet system K2-93, discovered with data taken by the K2 mission. This system contains five identified planets ranging in size from sub-…
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-…
EPIC 203868608: A low-mass quadruple star system in the Upper Scorpius OB association
Ji Wang, Trevor J. David, Lynne Hillenbrand +3
Young multiple star systems provide excellent testing grounds for theories of star formation and evolution. EPIC 203868608 was previously studied~\citep{David2016} as a triple star…
EPIC 219217635: A Doubly Eclipsing Quadruple System Containing an Evolved Binary
T. Borkovits, S. Albrecht, S. Rappaport +14
We have discovered a doubly eclipsing, bound, quadruple star system in the field of K2 Campaign 7. EPIC 219217635 is a stellar image with that contains an eclipsing bin…
Beyond the Kepler/K2 bright limit: variability in the seven brightest members of the Pleiades
T. R. White, B. J. S. Pope, V. Antoci +20
The most powerful tests of stellar models come from the brightest stars in the sky, for which complementary techniques, such as astrometry, asteroseismology, spectroscopy, and inte…
Chromospheric emission of planet candidate systems - a way to identify false positives
Christoffer Karoff, Simon Albrecht, Alfio Bonanno +1
It has been hypothesized that the presence of closely orbiting giant planets is associated with enhanced chromospheric emission of their host stars. The main cause for such a relat…
Orbital Circularization of Hot and Cool Kepler Eclipsing Binaries
Vincent Van Eylen, Joshua N. Winn, Simon Albrecht
The rate of tidal circularization is predicted to be faster for relatively cool stars with convective outer layers, compared to hotter stars with radiative outer layers. Observing…
The BANANA project. V. Misaligned and precessing stellar rotation axes in CV Velorum
Simon Albrecht, Joshua N. Winn, Guillermo Torres +8
As part of the BANANA project (Binaries Are Not Always Neatly Aligned), we have found that the eclipsing binary CV Velorum has misaligned rotation axes. Based on our analysis of th…
Low stellar obliquities in compact multiplanet systems
Simon Albrecht, Joshua N. Winn, Geoffrey W. Marcy +3
We measure the sky-projected stellar obliquities (λ) in the multiple-transiting planetary systems KOI-94 and Kepler-25, using the Rossiter-McLaughlin effect. In both cases the host…
BANANA IV: Two aligned stellar rotation axes in the young eccentric binary system EP Crucis: primordial orientation and tidal alignment
Simon Albrecht, Johny Setiawan, Guillermo Torres +2
With observations of the EP Cru system, we continue our series of measurements of spin-orbit angles in eclipsing binary star systems, the BANANA project (Binaries Are Not Always Ne…
Obliquities of Hot Jupiter host stars: Evidence for tidal interactions and primordial misalignments
Simon Albrecht, Joshua N. Winn, John A. Johnson +10
We provide evidence that the obliquities of stars with close-in giant planets were initially nearly random, and that the low obliquities that are often observed are a consequence o…
The long history of the Rossiter-McLaughlin effect and its recent applications
Simon Albrecht
In this paper I will review the Rossiter-McLaughlin (RM) effect; its history, how it manifests itself during stellar eclipses and planetary transits, and the increasingly important…
The Banana Project. III. Spin-orbit Alignment in the Long-period Eclipsing Binary NY Cephei
Simon Albrecht, Joshua Winn, Joshua Carter +2
Binaries are not always neatly aligned. Previous observations of the DI Her system showed that the spin axes of both stars are highly inclined with respect to one another and the o…
Misaligned spin and orbital axes cause the anomalous precession of DI Herculis
Simon Albrecht, Sabine Reffert, Ignas A. G. Snellen +1
The orbits of binary stars precess as a result of general relativistic effects, forces arising from the asphericity of the stars, and forces from additional stars or planets in the…