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  • Sumi, T.Osaka University (author)

The first Neptune analog or super-earth with a Neptune-like orbit : MOA-2013-BLG-605LB

  • Article/chapterEnglish2016

Publisher, publication year, extent ...

  • 2016

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:081ead21-22a7-4415-b6be-67efd47d2fba
  • https://lup.lub.lu.se/record/081ead21-22a7-4415-b6be-67efd47d2fbaURI
  • https://doi.org/10.3847/0004-637X/825/2/112DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • We present the discovery of the first Neptune analog exoplanet or super-Earth with a Neptune-like orbit, MOA-2013-BLG-605Lb. This planet has a mass similar to that of Neptune or a super-Earth and it orbits at 9 ∼ 14 times the expected position of the snow line, a snow, which is similar to Neptune's separation of 11 a snow from the Sun. The planet/host-star mass ratio is q = (3.6 ± 0.7) × 10-4 and the projected separation normalized by the Einstein radius is s = 2.39 ± 0.05. There are three degenerate physical solutions and two of these are due to a new type of degeneracy in the microlensing parallax parameters, which we designate "the wide degeneracy." The three models have (i) a Neptune-mass planet with a mass of Mp = 21-7 +6M⊕ orbiting a low-mass M-dwarf with a mass of Mh = 0.19-0.06 +0.05M⊙, (ii) a mini-Neptune with Mp = 7.9-1.2 +1.8M⊕ orbiting a brown dwarf host with Mh = 0.068-0.011 +0.019M⊙, and (iii) a super-Earth with Mp = 3.2-0.3 +0.5MM⊕ orbiting a low-mass brown dwarf host with Mh = 0.025-0.0004 +0.005M⊙, which is slightly favored. The 3D planet-host separations are 4.6-1.2 +4.7au, 2.1-0.2 +1.0au, and 0.94-0.02 +0.67au, which are 8.9-1.4 +10.5, 12-1 +7, or 14-1 +11 times larger than a snow for these models, respectively. Keck adaptive optics observations confirm that the lens is faint. This discovery suggests that low-mass planets with Neptune-like orbits are common. Therefore processes similar to the one that formed Neptune in our own solar system or cold super-Earths may be common in other solar systems.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Udalski, A.University of Warsaw (author)
  • Bennett, D. P.University of Notre Dame,NASA Goddard Space Flight Center (author)
  • Gould, A.Ohio State University (author)
  • Poleski, R.Ohio State University (author)
  • Bond, I. A.Massey University (author)
  • Skowron, J.University of Warsaw (author)
  • Rattenbury, N.University of Auckland (author)
  • Pogge, R. W.Ohio State University (author)
  • Bensby, T.Lund University,Lunds universitet,Astronomi - Har omorganiserats,Institutionen för astronomi och teoretisk fysik - Har omorganiserats,Naturvetenskapliga fakulteten,Lund Observatory - Has been reorganised,Department of Astronomy and Theoretical Physics - Has been reorganised,Faculty of Science(Swepub:lu)astr-tbe (author)
  • Beaulieu, J. P.The French National Centre for Scientific Research (CNRS) (author)
  • Marquette, J. B.The French National Centre for Scientific Research (CNRS) (author)
  • Batista, V.The French National Centre for Scientific Research (CNRS) (author)
  • Brillant, S.European Southern Observatory (author)
  • Abe, F.Nagoya University (author)
  • Asakura, Y.Nagoya University (author)
  • Bhattacharya, A.University of Notre Dame (author)
  • Donachie, M.University of Auckland (author)
  • Freeman, M.University of Auckland (author)
  • Fukui, A.National Astronomical Observatory of Japan (author)
  • Hirao, Y.Osaka University (author)
  • Itow, Y.Nagoya University (author)
  • Koshimoto, N.Osaka University (author)
  • Li, M. C ALund University,Lunds universitet,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,University of Auckland(Swepub:lu)ener-mli (author)
  • Ling, C. H.Massey University (author)
  • Masuda, K.Nagoya University (author)
  • Matsubara, Y.Nagoya University (author)
  • Muraki, Y.Nagoya University (author)
  • Nagakane, M.Osaka University (author)
  • Ohnishi, K.Nagano National College of Technology (author)
  • Oyokawa, H.Nagoya University (author)
  • Saito, ToTokyo Metropolitan College of Aeronautical Engineering (author)
  • Sharan, A.University of Auckland (author)
  • Sullivan, D. J.Te Herenga Waka / Victoria University of Wellington (author)
  • Suzuki, D.University of Notre Dame (author)
  • Tristram, P. J.Mt. John University Observatory (author)
  • Yonehara, A.Kyoto Sangyo University (author)
  • Szymański, M. K.University of Warsaw (author)
  • Ulaczyk, K.University of Warsaw (author)
  • Kozłowski, S.University of Warsaw (author)
  • Kubiak, M.University of Warsaw (author)
  • Pietrukowicz, P.University of Warsaw (author)
  • Pietrzyński, G.University of Warsaw (author)
  • Soszyński, I.University of Warsaw (author)
  • Han, C.Chungbuk National University (author)
  • Jung, Y. K.Chungbuk National University (author)
  • Shin, I. G.Chungbuk National University (author)
  • Lee, C. U.Korea Astronomy and Space Science Institute (KASI) (author)
  • Osaka UniversityUniversity of Warsaw (creator_code:org_t)

Related titles

  • In:Astrophysical Journal825:20004-637X

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