2008A&A...483..317K


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST23:22:16

2008A&A...483..317K - Astronomy and Astrophysics, volume 483, 317-324 (2008/5-3)

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

KUBAS D., CASSAN A., DOMINIK M., BENNETT D.P., WAMBSGANSS J., BRILLANT S., BEAULIEU J.P., ALBROW M.D., BATISTA V., BODE M., BRAMICH D.M., BURGDORF M., CALDWELL J.A.R., CALITZ H., COOK K.H., COUTURES C., DIETERS S., DOMINIS PRESTER D., DONATOWICZ J., FOUQUE P., GREENHILL J., HILL K., HOFFMAN M., HORNE K., JORGENSEN U.G., KAINS N., KANE S., MARQUETTE J.B., MARTIN R., MEINTJES P., MENZIES J., POLLARD K.R., SAHU K.C., SNODGRASS C., STEELE I., TSAPRAS Y., VINTER C., WILLIAMS A., WOLLER K. and ZUB M.

Abstract (from CDS):

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 1MJ between 1.1 and 2.3AU around OGLE 2005-BLG-390Lwould have revealed their existence, whereas for gas giants above 3MJ in orbits between 1.5 and 2.2AU, 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.

Abstract Copyright:

Journal keyword(s): stars: planetary systems - gravitational lensing

CDS comments: Paragraph. 1. Gliese 476 b is a probable misprint for Gliese 436 b.

Simbad objects: 9

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Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Ross 905b Pl 11 42 11.0933874353 +26 42 23.658083337           ~ 592 1
2 BD-07 4003 BY* 15 19 26.8271336166 -07 43 20.190958776 13.403 11.76 10.560 9.461 8.911 M3V 534 2
3 BD-07 4003c Pl 15 19 26.8271336166 -07 43 20.190958776           ~ 96 1
4 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11542 0
5 EWS 2005-BLG-390 * 17 54 19.2 -30 22 38           KIII 48 1
6 NAME EWS 2005-BLG-390b Pl 17 54 19.2 -30 22 38           ~ 66 1
7 NAME EWS 2005-BLG-169b Pl 18 06 05.32 -30 43 57.5           ~ 33 1
8 BD-15 6290d Pl 22 53 16.7323107416 -14 15 49.303409936           ~ 135 1
9 NAME Galactic Bulge reg ~ ~           ~ 3391 0

    Equat.    Gal    SGal    Ecl

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2020.07.13-23:22:16

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