Oumuamua as a messenger from the Local Association

@article{Feng2017OumuamuaAA,
  title={Oumuamua as a messenger from the Local Association},
  author={Fabo Feng and Hugh R. A. Jones},
  journal={arXiv: Earth and Planetary Astrophysics},
  year={2017}
}
  • F. Feng, H. Jones
  • Published 23 November 2017
  • Physics
  • arXiv: Earth and Planetary Astrophysics
With a hyperbolic trajectory around the Sun, `Oumuamua is the first confirmed interstellar object. However, its origin is poorly known. By simulating the orbits of 0.23 million local stars, we find 109 encounters with periastron less than 5 pc. `Oumuamua's low peculiar velocity is suggestive of its origin from a young stellar association with similar velocity. In particular, we find that `Oumuamua would have had slow encounters with at least five young stars belonging to the Local Association… 

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References

SHOWING 1-10 OF 44 REFERENCES
Investigating the dynamical history of the interstellar object 'Oumuamua
Here we try to find the origin of 1I/2017 U1 ’Oumuamua, the first interstellar object recorded inside the solar system. To this aim, we searched for close encounters between ’Oumuamua and all nearby
A brief visit from a red and extremely elongated interstellar asteroid
TLDR
Observations and analysis of the object 1I/2017 U1 (‘Oumuamua) that demonstrate its extrasolar trajectory, and that enable comparisons to be made between material from another planetary system and from the authors' own, reveal it to be asteroidal with no hint of cometary activity despite an approach within 0.25 astronomical units of the Sun.
Col-OSSOS: Colors of the Interstellar Planetesimal 1I/‘Oumuamua
The recent discovery by Pan-STARRS1 of 1I/2017 U1 (`Oumuamua), on an unbound and hyperbolic orbit, offers a rare opportunity to explore the planetary formation processes of other stars, and the
Was Proxima captured by Alpha Centauri A and B
The nearest stellar system consists of the stars Proxima, alpha Centauri A and B and at least one planet Proxima b. The habitability of Proxima b and any other planets are likely to be significantly
Kinematics of the Interstellar Vagabond A/2017 U1
The initial Galactic velocity vector for the recently discovered hyperbolic asteroid A/2017 U1 is calculated for before its encounter with our solar system. When the velocity is compared to the local
A catalogue of close encounter pairs
We provide a catalogue of pairs of stars whose periapses are less than 1pc within the past or future 100 Myr. We use astrometric data from TGAS, Hipparcos and radial velocity data from RAVE and XHIP
A general method for assessing the origin of interstellar small bodies: the case of 1I/2017 U1 ('Oumuamua)
With the advent of more and deeper sky surveys, the discovery of interstellar small objects entering into the Solar System has been finally possible. In October 19, 2017, using observations of the
No large population of unbound or wide-orbit Jupiter-mass planets
TLDR
A sample of microlensing events six times larger than that of ref. 11 is analysed, finding no excess of events with timescales in this range, with a 95 per cent upper limit on the frequency of Jupiter-mass free-floating or wide-orbit planets of 0.25 planets per main-sequence star.
Local stellar kinematics from Hipparcos data
TLDR
From the parallaxes and proper motions of a kinematically unbiased subsample of the Hipparcos Catalogue, it is re-determined as a function of colour the kinematics of main-sequence stars that spiral arms are responsible for the non-axisymmetry and that R0/Rd ≃ 3 to 3, where Rd is the scalelength of the disc.
APO Time Resolved Color Photometry of Highly-Elongated Interstellar Object 1I/'Oumuamua
We report on $g$, $r$ and $i$ band observations of the Interstellar Object 'Oumuamua (1I) taken on 2017 October 29 from 04:28 to 08:40 UTC by the Apache Point Observatory (APO) 3.5m telescope's
...
1
2
3
4
5
...