Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Rebecca G. Martin"'
Publikováno v:
The Astrophysical Journal Letters, Vol 961, Iss 1, p L5 (2024)
The dominant mechanism for generating free-floating planets has so far remained elusive. One suggested mechanism is that planets are ejected from planetary systems due to planet–planet interactions. Instability around a single star requires a very
Externí odkaz:
https://doaj.org/article/4496254f170e453db8326fb9b0445d70
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 73 (2024)
We examine the dynamics and stability of circumbinary particles orbiting around the Earth–Moon binary system. The moon formed close to the Earth (semimajor axis a _EM ≈ 3 R _⊕ ) and expanded through tides to its current day semimajor axis ( a _
Externí odkaz:
https://doaj.org/article/7d3643f18a4c441fb6e985e0d1aefc21
Autor:
Anna C. Childs, Rebecca G. Martin, C. J. Nixon, Aaron M. Geller, Stephen H. Lubow, Zhaohuan Zhu, Stephen Lepp
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 77 (2024)
We study the effects of general relativity (GR) on the evolution and alignment of circumbinary disks around binaries on all scales. We implement relativistic apsidal precession of the binary into the hydrodynamics code phantom . We find that the effe
Externí odkaz:
https://doaj.org/article/910dbf0849bf4f25b8148e79f8b4fe80
Publikováno v:
The Astrophysical Journal Letters, Vol 958, Iss 2, p L23 (2023)
Increased eccentricity of a black hole binary leads to reduced merger times. With n -body simulations and analytic approximations including the effects of general relativity (GR), we show that even a low-mass companion orbiting a black hole binary ca
Externí odkaz:
https://doaj.org/article/bb36a07896b346f18ee3ea75fb5e3881
Publikováno v:
The Astrophysical Journal Letters, Vol 957, Iss 2, p L28 (2023)
We examine the geometry of the post–asymptotic giant branch (AGB) star binary AC Her and its circumbinary disk. We show that the observations describe a binary orbit that is perpendicular to the disk with an angular momentum vector that is within 9
Externí odkaz:
https://doaj.org/article/3d4073d1b97c42b89a4ef9f49024639e
Publikováno v:
The Astrophysical Journal Letters, Vol 945, Iss 1, p L11 (2023)
Mutually misaligned circumbinary planets may form in a warped or broken gas disk or from later planet–planet interactions. With numerical simulations and analytic estimates we explore the dynamics of two circumbinary planets with a large mutual inc
Externí odkaz:
https://doaj.org/article/8b2b8a2e015f45d29030a723cd5fe977
Publikováno v:
The Astrophysical Journal Letters, Vol 943, Iss 1, p L4 (2023)
Observations of protoplanetary disks around binary and triple star systems suggest that misalignments between the orbital plane of the stars and the disks are common. Motivated by recent observations of polar circumbinary disks, we explore the possib
Externí odkaz:
https://doaj.org/article/1aa3286610774eb8b5479c97046cbf9e
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 2 (2023)
We use numerical simulations of circumplanetary disks to determine the boundary between disks that are radially truncated by the tidal potential and those where gas escapes the Hill sphere. We consider a model problem, in which a coplanar circumplane
Externí odkaz:
https://doaj.org/article/764ccabf79ee4c95835a2faebd83e1dd
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 517:732-743
A test particle orbit around an eccentric binary has two stationary states in which there is no nodal precession: coplanar and polar. Nodal precession of a misaligned test particle orbit centres on one of these stationary states. A low mass circumbin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d296f550e92252b590a43c36ec09632b
https://doi.org/10.1093/mnras/stac2601
https://doi.org/10.1093/mnras/stac2601
Autor:
Rebecca G Martin
Superorbital periods are observed in the optical light curves of many Be/X-ray binaries yet their origin has remained somewhat elusive. We suggest that precession of the spin axis of the Be star can drive superorbital periods, particularly for short
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab237c851d19fdca7d87e3133c4ca29a
http://arxiv.org/abs/2305.14539
http://arxiv.org/abs/2305.14539
