English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

A Neptune-mass Free-floating Planet Candidate Discovered by Microlensing Surveys

MPS-Authors

Mróz,  Przemek
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ryu,  Y. -H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Skowron,  J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Udalski,  A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gould,  A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Szymański,  M. K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Soszyński,  I.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Poleski,  R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pietrukowicz,  P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kozłowski,  S.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pawlak,  M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ulaczyk,  K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Collaboration,  OGLE
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Albrow,  M. D.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Chung,  S. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jung,  Y. K.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Han,  C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hwang,  K. -H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shin,  I. -G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Yee,  J. C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zhu,  W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cha,  S. -M.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  D. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  H. -W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Kim,  S. -L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee,  C. -U.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee,  D. -J.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lee,  Y.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Park,  B. -G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pogge,  R. W.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Collaboration,  KMTNet
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2018AJ....155..121M
(Any fulltext)

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Mróz, P., Ryu, Y.-.-H., Skowron, J., Udalski, A., Gould, A., Szymański, M. K., et al. (2018). A Neptune-mass Free-floating Planet Candidate Discovered by Microlensing Surveys. The Astronomical Journal, 155.


Cite as: https://hdl.handle.net/21.11116/0000-0005-CC10-3
Abstract
Current microlensing surveys are sensitive to free-floating planets down to Earth-mass objects. All published microlensing events attributed to unbound planets were identified based on their short timescale (below two days), but lacked an angular Einstein radius measurement (and hence lacked a significant constraint on the lens mass). Here, we present the discovery of a Neptune-mass free-floating planet candidate in the ultrashort (t E = 0.320 ± 0.003 days) microlensing event OGLE-2016-BLG-1540. The event exhibited strong finite-source effects, which allowed us to measure its angular Einstein radius of θ E = 9.2 ± 0.5 μas. There remains, however, a degeneracy between the lens mass and distance. The combination of the source proper motion and source-lens relative proper motion measurements favors a Neptune-mass lens located in the Galactic disk. However, we cannot rule out that the lens is a Saturn-mass object belonging to the bulge population. We exclude stellar companions up to ̃15 au.