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MOA-2010-BLG-328Lb : A Sub-Neptune Orbiting very Late M Dwarf?


Furusawa, K.; ...; Dominis Prester, Dijana; ...; Zub, M.
MOA-2010-BLG-328Lb : A Sub-Neptune Orbiting very Late M Dwarf? // The Astrophysical journal, 779 (2013), 2; 91-1 doi:10.1088/0004-637X/779/2/91 (međunarodna recenzija, članak, znanstveni)


Naslov
MOA-2010-BLG-328Lb : A Sub-Neptune Orbiting very Late M Dwarf?

Autori
Furusawa, K. ; ... ; Dominis Prester, Dijana ; ... ; Zub, M.

Izvornik
The Astrophysical journal (0004-637X) 779 (2013), 2; 91-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Gravitational lensing: micro; planetary systems

Sažetak
We analyze the planetary microlensing event MOA-2010-BLG-328. The best fit yields host and planetary masses of M h = 0.11 ± 0.01 M ☉ and M p = 9.2 ± 2.2 M ⊕, corresponding to a very late M dwarf and sub-Neptune-mass planet, respectively. The system lies at D L = 0.81 ± 0.10 kpc with projected separation r = 0.92 ± 0.16 AU. Because of the host's a priori unlikely close distance, as well as the unusual nature of the system, we consider the possibility that the microlens parallax signal, which determines the host gravitational lensing: micro, planetary systems mass and distance, is actually due to xallarap (source orbital motion) that is being misinterpreted as parallax. We show a result that favors the parallax solution, even given its close host distance. We show that future high-resolution astrometric measurements could decisively resolve the remaining ambiguity of these solutions.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
316-0000000-2824 - Dijagnostika i fizička svojstva cirkumstelarne tvari (Dubravka Kotnik-Karuza, )

Ustanove
Sveučilište u Rijeci - Odjel za fiziku

Autor s matičnim brojem:
Dijana Dominis Prester, (241452)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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