Zobrazeno 1 - 10
of 213
pro vyhledávání: '"Bradley, M. S."'
Autor:
Shariat, Cheyanne, Naoz, Smadar, El-Badry, Kareem, Rodriguez, Antonio C., Hansen, Bradley M. S., Angelo, Isabel, Stephan, Alexander P.
More than half of all main-sequence (MS) stars have one or more companions, and many of those with initial masses <8 M$_\odot$ are born in hierarchical triples. These systems feature two stars in a close orbit (the inner binary) while a tertiary star
Externí odkaz:
http://arxiv.org/abs/2407.06257
Triple body systems are prevalent in nature, from planetary to stellar to supermassive black hole scales. In a hierarchical triple system, oscillations of the inner orbit's eccentricity and inclination can be induced on secular timescales. Over many
Externí odkaz:
http://arxiv.org/abs/2405.20377
Autor:
Shariat, Cheyanne, Hasegawa, Yasuhiro, Hansen, Bradley M. S., Yu, Tze Yeung Mathew, Hu, Renyu
Most, if not all, sun-like stars host one or more planets, making multi-planetary systems commonplace in our galaxy. We utilize hundreds of multi-planet simulations to explore the origin of such systems, focusing on their orbital architecture. The fi
Externí odkaz:
http://arxiv.org/abs/2402.04574
Autor:
Shariat, Cheyanne, Naoz, Smadar, Hansen, Bradley M. S., Angelo, Isabel, Michaely, Erez, Stephan, Alexander P.
The $Gaia$ mission has detected many white dwarfs (WDs) in binary and triple configurations, and while observations suggest that triple stellar systems are common in our Galaxy, not much attention was devoted to WDs in triples. For stability reasons,
Externí odkaz:
http://arxiv.org/abs/2306.13130
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 522, 2 (2023), 2115-2132
Irregular satellites are the minor bodies found orbiting all four Solar System giant planets, with large semi-major axes, eccentricities, and inclinations. Previous studies have determined that the Solar System's irregular satellites are extremely co
Externí odkaz:
http://arxiv.org/abs/2304.13753
Autor:
Hansen, Bradley M. S.
Moons orbiting rocky exoplanets in compact orbits about other stars experience an accelerated tidal evolution, and can either merge with their parent planet or reach the limit of dynamical instability within a Hubble time. We review the parameter spa
Externí odkaz:
http://arxiv.org/abs/2210.02603
Publikováno v:
The Open Journal of Astrophysics, Vol 7 (2024)
We describe the evolution of low mass planets in a dispersing protoplanetary disk around a Solar mass star. The disk model is based on the results of \cite{YHH23}, which describes a region of the inner disk where the direction of the migration torque
Externí odkaz:
https://doaj.org/article/c373d20fd8354f0c8b2244d94ae1243d
Autor:
Richer, Harvey B., Cohen, Roger E., Correnti, Matteo, Caiazzo, Ilaria, Cummings, Jeffrey, Goudfrooij, Paul, Hansen, Bradley M. S., Heyl, Jeremy, Peeples, Molly, Kalirai, Jason, Sabbi, Elena, Tremblay, Pier-Emmanuel, Williams, Benjamin
The maximum mass of a star that can produce a white dwarf (WD) is an important astrophysical quantity. One of the best approaches to establishing this limit is to search for WDs in young star clusters in which only massive stars have had time to evol
Externí odkaz:
http://arxiv.org/abs/2203.11264
Autor:
Hansen, Bradley M. S.
We present a catalog of unbound stellar pairs, within 100 pc of the Sun, that are undergoing close, hyperbolic, encounters. The data are drawn from the GAIA EDR3 catalogue, and the limiting factors are errors in the radial distance and unknown veloci
Externí odkaz:
http://arxiv.org/abs/2112.00852
Autor:
Bradley M. S. Hansen, Kevin Hayakawa
Publikováno v:
The Open Journal of Astrophysics, Vol 7 (2024)
Externí odkaz:
https://doaj.org/article/17e459144bde463d87a2d835051fead6