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Pregled bibliografske jedinice broj: 324083

Limits on additional planetary companions to OGLE-2005-BLG-390L


Kubas, Daniel; Cassan, Arnaud; Dominik, Martin; Bennett, Dave P.; Wambsganss, Joachim; Beaulieu, Jean-Philippe; Albrow, Michael D.; Batista, Virginie; Bode, M.; Bramich, Daniel M. et al.
Limits on additional planetary companions to OGLE-2005-BLG-390L // Astronomy and Astrophysics, 483 (2008), 1; 317-324 (međunarodna recenzija, članak, znanstveni)


Naslov
Limits on additional planetary companions to OGLE-2005-BLG-390L

Autori
Kubas, Daniel ; Cassan, Arnaud ; Dominik, Martin ; Bennett, Dave P. ; Wambsganss, Joachim ; Beaulieu, Jean-Philippe ; Albrow, Michael D. ; Batista, Virginie ; Bode, M. ; Bramich, Daniel M. ; Brillant, Stéphane ; Burgdorf, M. ; Caldwell, John A. R. ; Calitz, Hannes ; Cook, Kem H. ; Coutures, Christian ; Dieters, Stefan ; Dominis Prester, Dijana ; Donatowicz, Jadzia ; Fouqué, Pascal ; Greenhill, John ; Hill, Kym ; Hoffman, Matie ; Horne, Keith ; Jø rgensen, Uffe G. ; Kains, Noe ; Kane, Stephen ; Marquette, Jean-Baptiste ; Martin, Ralph ; Meintjes, Pieter ; Menzies, John ; Pollard, Karen R. ; Sahu, Kailash C. ; Snodgrass, C. ; Steele, I. ; Tsapras, Y. ; Vinter, Christian ; Williams, Andrew ; Woller, Kristian ; Zub, Marta

Izvornik
Astronomy and Astrophysics (0004-6361) 483 (2008), 1; 317-324

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

Ključne riječi
Techniques microlensing; exoplanets individual OGLE-2005-BLG-390Lb; stars M-dwarfs; stars K-dwarfs

Sažetak
We investigate constraints on additional planets orbiting the distant M-dwarf star OGLE-2005-BLG-390L, around which photometric microlensing data has revealed the existence of the sub-Neptune-mass planet OGLE-2005-BLG-390Lb. We specifically aim to study potential Jovian companions and compare our findings with predictions from core-accretion and disc-instability models of planet formation. We also obtain an estimate of the detection probability for sub-Neptune mass planets similar to OGLE-2005-BLG-390Lb using a simplified simulation of a microlensing experiment. We compute the efficiency of our photometric data for detecting additional planets around OGLE-2005-BLG-390L, as a function of the microlensing model parameters and convert it into a function of the orbital axis and planet mass by means of an adopted model of the Milky Way. We find that more than 50 % of potential planets with a mass in excess of 1 M_J between 1.1 and 2.3 AU around OGLE-2005-BLG-390L would have revealed their existence, whereas for gas giants above 3 M_J in orbits between 1.5 and 2.2 AU, the detection efficiency reaches 70 % ; however, no such companion was observed. Our photometric microlensing data therefore do not contradict the existence of gas giant planets at any separation orbiting OGLE-2005-BLG-390L. Furthermore we find a detection probability for an OGLE-2005-BLG-390Lb-like planet of around 2-5 %. In agreement with current planet formation theories, this quantitatively supports the prediction that sub-Neptune mass planets are common around low-mass stars.

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)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus