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Pathway to the Galactic distribution of planets : combined Spitzer and ground-based microlens parallax measurements of 21 single-lens events

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Date
01/05/2015
Author
Calchi Novati, S.
Gould, A.
Udalski, A.
Menzies, J. W.
Bond, I. A.
Shvartzvald, Y.
Street, R. A.
Hundertmark, M.
Beichman, C. A.
Yee, J. C.
Carey, S.
Poleski, R.
Skowron, J.
Kozłowski, S.
Mróz, P.
Pietrukowicz, P.
Pietrzyński, G.
Szymański, M. K.
Soszyński, I.
Ulaczyk, K.
Wyrzykowski, Ł.
Albrow, M.
Beaulieu, J. P.
Caldwell, J. A. R.
Cassan, A.
Coutures, C.
Danielski, C.
Dominis Prester, D.
Donatowicz, J.
Lončarić, K.
McDougall, A.
Morales, J. C.
Ranc, C.
Zhu, W.
Abe, F.
Barry, R. K.
Bennett, D. P.
Bhattacharya, A.
Fukunaga, D.
Inayama, K.
Koshimoto, N.
Namba, S.
Sumi, T.
Suzuki, D.
Tristram, P. J.
Wakiyama, Y.
Yonehara, A.
Maoz, D.
Kaspi, S.
Friedmann, M.
Bachelet, E.
Figuera Jaimes, R.
Bramich, D. M.
Tsapras, Y.
Horne, K.
Snodgrass, C.
Wambsganss, J.
Steele, I. A.
Kains, N.
Bozza, V.
Dominik, M.
Jørgensen, U. G.
Alsubai, K. A.
Ciceri, S.
D’Ago, G.
Haugbølle, T.
Hessman, F. V.
Hinse, T. C.
Juncher, D.
Korhonen, H.
Mancini, L.
Popovas, A.
Rabus, M.
Rahvar, S.
Scarpetta, G.
Schmidt, R. W.
Skottfelt, J.
Southworth, J.
Starkey, David
Surdej, J.
Wertz, O.
Zarucki, M.
Gaudi, B. S.
Pogge, R. W.
DePoy, D. L.
Funder
The Royal Society
Science & Technology Facilities Council
Science & Technology Facilities Council
Science & Technology Facilities Council
Grant ID
UF100010 / UF130581
ST/J001651/1
ST/K001515/1
ST/M001296/1
Keywords
Gravitational lensing: micro
Planetary systems
Planets and satellites: dynamical evolution and stability
QB Astronomy
QC Physics
3rd-DAS
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Abstract
We present microlens parallax measurements for 21 (apparently) isolated lenses observed toward the Galactic bulge that were imaged simultaneously from Earth and Spitzer, which was ~1 AU west of Earth in projection. We combine these measurements with a kinematic model of the Galaxy to derive distance estimates for each lens, with error bars that are small compared to the Sun's galactocentric distance. The ensemble therefore yields a well-defined cumulative distribution of lens distances. In principle, it is possible to compare this distribution against a set of planets detected in the same experiment in order to measure the Galactic distribution of planets. Since these Spitzer observations yielded only one planet, this is not yet possible in practice. However, it will become possible as larger samples are accumulated.
Citation
Calchi Novati , S , Gould , A , Udalski , A , Menzies , J W , Bond , I A , Shvartzvald , Y , Street , R A , Hundertmark , M , Beichman , C A , Yee , J C , Carey , S , Poleski , R , Skowron , J , Kozłowski , S , Mróz , P , Pietrukowicz , P , Pietrzyński , G , Szymański , M K , Soszyński , I , Ulaczyk , K , Wyrzykowski , Ł , Albrow , M , Beaulieu , J P , Caldwell , J A R , Cassan , A , Coutures , C , Danielski , C , Dominis Prester , D , Donatowicz , J , Lončarić , K , McDougall , A , Morales , J C , Ranc , C , Zhu , W , Abe , F , Barry , R K , Bennett , D P , Bhattacharya , A , Fukunaga , D , Inayama , K , Koshimoto , N , Namba , S , Sumi , T , Suzuki , D , Tristram , P J , Wakiyama , Y , Yonehara , A , Maoz , D , Kaspi , S , Friedmann , M , Bachelet , E , Figuera Jaimes , R , Bramich , D M , Tsapras , Y , Horne , K , Snodgrass , C , Wambsganss , J , Steele , I A , Kains , N , Bozza , V , Dominik , M , Jørgensen , U G , Alsubai , K A , Ciceri , S , D’Ago , G , Haugbølle , T , Hessman , F V , Hinse , T C , Juncher , D , Korhonen , H , Mancini , L , Popovas , A , Rabus , M , Rahvar , S , Scarpetta , G , Schmidt , R W , Skottfelt , J , Southworth , J , Starkey , D , Surdej , J , Wertz , O , Zarucki , M , Gaudi , B S , Pogge , R W & DePoy , D L 2015 , ' Pathway to the Galactic distribution of planets : combined Spitzer and ground-based microlens parallax measurements of 21 single-lens events ' , Astrophysical Journal , vol. 804 , no. 1 . https://doi.org/10.1088/0004-637X/804/1/20
Publication
Astrophysical Journal
Status
Peer reviewed
DOI
https://doi.org/10.1088/0004-637X/804/1/20
ISSN
0004-637X
Type
Journal article
Rights
© 2015. The American Astronomical Society. All rights reserved.
Collections
  • University of St Andrews Research
URL
http://adsabs.harvard.edu/abs/2015ApJ...804...20C
URI
http://hdl.handle.net/10023/6778

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