St Andrews Research Repository

St Andrews University Home
View Item 
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  • Register / Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

Discovery of a gas giant planet in microlensing event OGLE-2014-BLG-1760

Thumbnail
View/Open
Bhattacharya_2016_AJ_152_140.pdf (1.808Mb)
Date
11/2016
Author
Bhattacharya, A.
Bennett, D. P.
Bond, I. A.
Sumi, T.
Udalski, A.
Street, R.
Tsapras, Y.
Abe, F.
Freeman, M.
Fukui, A.
Hirao, Y.
Itow, Y.
Koshimoto, N.
Li, M. C. A.
Ling, C. H.
Masuda, K.
Matsubara, Y.
Muraki, Y.
Nagakane, M.
Ohnishi, K.
Rattenbury, N.
Saito, T.
Sharan, A.
Sullivan, D. J.
Suzuki, D.
Tristram, P. J.
Skowron, J.
Szymański, M. K.
Soszyński, I.
Poleski, R.
Mróz, P.
Kozlowski, S.
Pietrukowicz, P.
Ulaczyk, K.
Wyrzykowski, L.
Bachelet, E.
Bramich, D. M.
D’Ago, G.
Dominik, M.
Figuera Jaimes, R.
Horne, K.
Hundertmark, M.
Kains, N.
Menzies, J.
Schmidt, R.
Snodgrass, C.
Steele, I. A.
Wambsganss, J.
Keywords
Gravitational lensing: micro
Planetary systems
QB Astronomy
QC Physics
NDAS
Metadata
Show full item record
Abstract
We present the analysis of the planetary microlensing event OGLE-2014-BLG-1760, which shows a strong light-curve signal due to the presence of a Jupiter mass ratio planet. One unusual feature of this event is that the source star is quite blue, with V-I=1.48+/- 0.08. This is marginally consistent with a source star in the Galactic bulge, but it could possibly indicate a young source star on the far side of the disk. Assuming a bulge source, we perform a Bayesian analysis assuming a standard Galactic model, and this indicates that the planetary system resides in or near the Galactic bulge at DL=6.9+/- 1.1 kpc. It also indicates a host-star mass of M*=0.51-0.28/+0.44M_sun, a planet mass of mp=0.56-0.26/+0.34MJ, and a projected star–planet separation of a_perp=1.75-0.33/+0.34 au. The lens–source relative proper motion is μrel=6.5+/- 1.1 mas yr‑1. The lens (and stellar host star) is estimated to be very faint compared to the source star, so it is most likely that it can be detected only when the lens and source stars start to separate. Due to the relatively high relative proper motion, the lens and source will be resolved to about ∼46 mas in 6–8 yr after the peak magnification. So, by 2020–2022, we can hope to detect the lens star with deep, high-resolution images.
Citation
Bhattacharya , A , Bennett , D P , Bond , I A , Sumi , T , Udalski , A , Street , R , Tsapras , Y , Abe , F , Freeman , M , Fukui , A , Hirao , Y , Itow , Y , Koshimoto , N , Li , M C A , Ling , C H , Masuda , K , Matsubara , Y , Muraki , Y , Nagakane , M , Ohnishi , K , Rattenbury , N , Saito , T , Sharan , A , Sullivan , D J , Suzuki , D , Tristram , P J , Skowron , J , Szymański , M K , Soszyński , I , Poleski , R , Mróz , P , Kozlowski , S , Pietrukowicz , P , Ulaczyk , K , Wyrzykowski , L , Bachelet , E , Bramich , D M , D’Ago , G , Dominik , M , Figuera Jaimes , R , Horne , K , Hundertmark , M , Kains , N , Menzies , J , Schmidt , R , Snodgrass , C , Steele , I A & Wambsganss , J 2016 , ' Discovery of a gas giant planet in microlensing event OGLE-2014-BLG-1760 ' , Astronomical Journal , vol. 152 , no. 5 , 140 . https://doi.org/10.3847/0004-6256/152/5/140
Publication
Astronomical Journal
Status
Peer reviewed
DOI
https://doi.org/10.3847/0004-6256/152/5/140
ISSN
0004-6256
Type
Journal article
Rights
© 2016, American Astronomical Society. This work has been made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at iopscience.iop.org / http://dx.doi.org/10.3847/0004-6256/152/5/140
Collections
  • University of St Andrews Research
URL
https://arxiv.org/abs/1603.05677
http://adsabs.harvard.edu/abs/2016AJ....152..140B
URI
http://hdl.handle.net/10023/9823

Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

Advanced Search

Browse

All of RepositoryCommunities & CollectionsBy Issue DateNamesTitlesSubjectsClassificationTypeFunderThis CollectionBy Issue DateNamesTitlesSubjectsClassificationTypeFunder

My Account

Login

Open Access

To find out how you can benefit from open access to research, see our library web pages and Open Access blog. For open access help contact: openaccess@st-andrews.ac.uk.

Accessibility

Read our Accessibility statement.

How to submit research papers

The full text of research papers can be submitted to the repository via Pure, the University's research information system. For help see our guide: How to deposit in Pure.

Electronic thesis deposit

Help with deposit.

Repository help

For repository help contact: Digital-Repository@st-andrews.ac.uk.

Give Feedback

Cookie policy

This site may use cookies. Please see Terms and Conditions.

Usage statistics

COUNTER-compliant statistics on downloads from the repository are available from the IRUS-UK Service. Contact us for information.

© University of St Andrews Library

University of St Andrews is a charity registered in Scotland, No SC013532.

  • Facebook
  • Twitter