Spitzer observations of OGLE-2015-BLG-1212 reveal a new path toward breaking strong microlens degeneracies

V. Bozza; Y. Shvartzvald; A. Udalski; S. Calchi Novati; I. A. Bond; C. Han; M. Hundertmark; R. Poleski; M. Pawlak; M. K. Szymański; J. Skowron; P. Mróz; S. Kozłowski; Ł. Wyrzykowski; P. Pietrukowicz; I. Soszyński; K. Ulaczyk; C. Beichman; G. Bryden; S. Carey; M. Fausnaugh; B. S. Gaudi; A. Gould; C. B. Henderson; R. W. Pogge; B. Wibking; J. C. Yee; W. Zhu; F. Abe; Y. Asakura; R. K. Barry; D. P. Bennett; A. Bhattacharya; M. Donachie; M. Freeman; A. Fukui; Y. Hirao; K. Inayama; Y. Itow; N. Koshimoto; M. C. A. Li; C. H. Ling; K. Masuda; Y. Matsubara; Y. Muraki; M. Nagakane; T. Nishioka; K. Ohnishi; H. Oyokawa; N. Rattenbury; To. Saito; A. Sharan; D. J. Sullivan; T. Sumi; D. Suzuki; P. J. Tristram; Y. Wakiyama; A. Yonehara; J.-Y. Choi; H. Park; Y. K. Jung; I.-G. Shin; M. D. Albrow; B.-G. Park; S.-L. Kim; C.-U. Lee; S.-M. Cha; D.-J. Kim; Y. Lee; M. Dominik; U. G. Jørgensen; M. I. Andersen; D. M. Bramich; M. J. Burgdorf; S. Ciceri; G. D’Ago; D. F. Evans; R. Figuera Jaimes; S.-H. Gu; T. C. Hinse; N. Kains; E. Kerins; H. Korhonen; M. Kuffmeier; L. Mancini; A. Popovas; M. Rabus; S. Rahvar; R. T. Rasmussen; G. Scarpetta; J. Skottfelt; C. Snodgrass; J. Southworth; J. Surdej; E. Unda-Sanzana; C. von Essen; Y.-B. Wang; O. Wertz; D. Maoz; M. Friedmann; S. Kaspi

doi:10.3847/0004-637X/820/1/79

Spitzer observations of OGLE-2015-BLG-1212 reveal a new path toward breaking strong microlens degeneracies

V. Bozza, Y. Shvartzvald, A. Udalski, S. Calchi Novati, I. A. Bond, C. Han, M. Hundertmark, R. Poleski, M. Pawlak, M. K. Szymański, J. Skowron, P. Mróz, S. Kozłowski, Ł. Wyrzykowski, P. Pietrukowicz, I. Soszyński, K. Ulaczyk, C. Beichman, G. Bryden, S. CareyM. Fausnaugh, B. S. Gaudi, A. Gould, C. B. Henderson, R. W. Pogge, B. Wibking, J. C. Yee, W. Zhu, F. Abe, Y. Asakura, R. K. Barry, D. P. Bennett, A. Bhattacharya, M. Donachie, M. Freeman, A. Fukui, Y. Hirao, K. Inayama, Y. Itow, N. Koshimoto, M. C. A. Li, C. H. Ling, K. Masuda, Y. Matsubara, Y. Muraki, M. Nagakane, T. Nishioka, K. Ohnishi, H. Oyokawa, N. Rattenbury, To. Saito, A. Sharan, D. J. Sullivan, T. Sumi, D. Suzuki, P. J. Tristram, Y. Wakiyama, A. Yonehara, J.-Y. Choi, H. Park, Y. K. Jung, I.-G. Shin, M. D. Albrow, B.-G. Park, S.-L. Kim, C.-U. Lee, S.-M. Cha, D.-J. Kim, Y. Lee, M. Dominik, U. G. Jørgensen, M. I. Andersen, D. M. Bramich, M. J. Burgdorf, S. Ciceri, G. D’Ago, D. F. Evans, R. Figuera Jaimes, S.-H. Gu, T. C. Hinse, N. Kains, E. Kerins, H. Korhonen, M. Kuffmeier, L. Mancini, A. Popovas, M. Rabus, S. Rahvar, R. T. Rasmussen, G. Scarpetta, J. Skottfelt, C. Snodgrass, J. Southworth, J. Surdej, E. Unda-Sanzana, C. von Essen, Y.-B. Wang, O. Wertz, D. Maoz, M. Friedmann, S. Kaspi

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Spitzer microlensing parallax observations of OGLE-2015-BLG-1212decisively break a degeneracy between planetary and binary solutionsthat is somewhat ambiguous when only ground-based data are considered.Only eight viable models survive out of an initial set of 32 localminima in the parameter space. These models clearly indicate that thelens is a stellar binary system possibly located within the bulge of ourGalaxy, ruling out the planetary alternative. We argue that severaltypes of discrete degeneracies can be broken via such space-basedparallax observations.

Original language	English
Article number	79
Number of pages	10
Journal	Astrophysical Journal
Volume	820
Issue number	1
DOIs	https://doi.org/10.3847/0004-637X/820/1/79
Publication status	Published - 21 Mar 2016

Keywords

Binaries: general
Galaxy: bulge
Gravitational lensing: micro
Planets and satellites: detection
Space vehicles

Access to Document

10.3847/0004-637X/820/1/79

Dominik_2016_MicrolensDengeneracies_ApJ_FinalPubVersion
© 2016. The American Astronomical Society. All rights reserved. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.3847/0004-637X/820/1/79
Final published version, 688 KB

Planet population statistics: Planet population statistics from fully-deterministic microlensing campaigns
Dominik, M. (PI)
The Royal Society
1/10/11 → 30/09/15
Project: Fellowship

Cite this

Bozza, V., Shvartzvald, Y., Udalski, A., Calchi Novati, S., Bond, I. A., Han, C., Hundertmark, M., Poleski, R., Pawlak, M., Szymański, M. K., Skowron, J., Mróz, P., Kozłowski, S., Wyrzykowski, Ł., Pietrukowicz, P., Soszyński, I., Ulaczyk, K., Beichman, C., Bryden, G., ... Kaspi, S. (2016). Spitzer observations of OGLE-2015-BLG-1212 reveal a new path toward breaking strong microlens degeneracies. Astrophysical Journal, 820(1), Article 79. https://doi.org/10.3847/0004-637X/820/1/79

@article{93b0c9cb4c014311a76b05ec398150e4,

title = "Spitzer observations of OGLE-2015-BLG-1212 reveal a new path toward breaking strong microlens degeneracies",

abstract = "Spitzer microlensing parallax observations of OGLE-2015-BLG-1212decisively break a degeneracy between planetary and binary solutionsthat is somewhat ambiguous when only ground-based data are considered.Only eight viable models survive out of an initial set of 32 localminima in the parameter space. These models clearly indicate that thelens is a stellar binary system possibly located within the bulge of ourGalaxy, ruling out the planetary alternative. We argue that severaltypes of discrete degeneracies can be broken via such space-basedparallax observations.",

keywords = "Binaries: general, Galaxy: bulge, Gravitational lensing: micro, Planets and satellites: detection, Space vehicles",

author = "V. Bozza and Y. Shvartzvald and A. Udalski and {Calchi Novati}, S. and Bond, {I. A.} and C. Han and M. Hundertmark and R. Poleski and M. Pawlak and Szyma{\'n}ski, {M. K.} and J. Skowron and P. Mr{\'o}z and S. Koz{\l}owski and {\L}. Wyrzykowski and P. Pietrukowicz and I. Soszy{\'n}ski and K. Ulaczyk and C. Beichman and G. Bryden and S. Carey and M. Fausnaugh and Gaudi, {B. S.} and A. Gould and Henderson, {C. B.} and Pogge, {R. W.} and B. Wibking and Yee, {J. C.} and W. Zhu and F. Abe and Y. Asakura and Barry, {R. K.} and Bennett, {D. P.} and A. Bhattacharya and M. Donachie and M. Freeman and A. Fukui and Y. Hirao and K. Inayama and Y. Itow and N. Koshimoto and Li, {M. C. A.} and Ling, {C. H.} and K. Masuda and Y. Matsubara and Y. Muraki and M. Nagakane and T. Nishioka and K. Ohnishi and H. Oyokawa and N. Rattenbury and To. Saito and A. Sharan and Sullivan, {D. J.} and T. Sumi and D. Suzuki and Tristram, {P. J.} and Y. Wakiyama and A. Yonehara and J.-Y. Choi and H. Park and Jung, {Y. K.} and I.-G. Shin and Albrow, {M. D.} and B.-G. Park and S.-L. Kim and C.-U. Lee and S.-M. Cha and D.-J. Kim and Y. Lee and M. Dominik and J{\o}rgensen, {U. G.} and Andersen, {M. I.} and Bramich, {D. M.} and Burgdorf, {M. J.} and S. Ciceri and G. D{\textquoteright}Ago and Evans, {D. F.} and {Figuera Jaimes}, R. and S.-H. Gu and Hinse, {T. C.} and N. Kains and E. Kerins and H. Korhonen and M. Kuffmeier and L. Mancini and A. Popovas and M. Rabus and S. Rahvar and Rasmussen, {R. T.} and G. Scarpetta and J. Skottfelt and C. Snodgrass and J. Southworth and J. Surdej and E. Unda-Sanzana and {von Essen}, C. and Y.-B. Wang and O. Wertz and D. Maoz and M. Friedmann and S. Kaspi",

note = "The OGLE project has received funding from the National Science Centre, Poland, grant MAESTRO 2014/14/A/ST9/00121 to A.U. Work by Y.S. and C.B.H. was supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Oak Ridge Associated Universities through a contract with NASA. Work by C.H. was supported by Creative Research Initiative Program (2009-0081561) of National Research Foundation of Korea. J.C.Y., A.G., and S.C.N. acknowledge support by JPL grant 1500811. Work by W.Z. and A.G. was supported by NSF AST 1516842. Work by J.C.Y. was performed under contract with the California Institute of Technology (Caltech)/Jet Propulsion Laboratory (JPL) funded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute. T.S. acknowledges the financial support from the JSPS, JSPS23103002, JSPS24253004, and JSPS26247023. The MOA project is supported by grants JSPS25103508 and JSPS23340064.",

year = "2016",

month = mar,

day = "21",

doi = "10.3847/0004-637X/820/1/79",

language = "English",

volume = "820",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

Bozza, V, Shvartzvald, Y, Udalski, A, Calchi Novati, S, Bond, IA, Han, C, Hundertmark, M, Poleski, R, Pawlak, M, Szymański, MK, Skowron, J, Mróz, P, Kozłowski, S, Wyrzykowski, Ł, Pietrukowicz, P, Soszyński, I, Ulaczyk, K, Beichman, C, Bryden, G, Carey, S, Fausnaugh, M, Gaudi, BS, Gould, A, Henderson, CB, Pogge, RW, Wibking, B, Yee, JC, Zhu, W, Abe, F, Asakura, Y, Barry, RK, Bennett, DP, Bhattacharya, A, Donachie, M, Freeman, M, Fukui, A, Hirao, Y, Inayama, K, Itow, Y, Koshimoto, N, Li, MCA, Ling, CH, Masuda, K, Matsubara, Y, Muraki, Y, Nagakane, M, Nishioka, T, Ohnishi, K, Oyokawa, H, Rattenbury, N, Saito, T, Sharan, A, Sullivan, DJ, Sumi, T, Suzuki, D, Tristram, PJ, Wakiyama, Y, Yonehara, A, Choi, J-Y, Park, H, Jung, YK, Shin, I-G, Albrow, MD, Park, B-G, Kim, S-L, Lee, C-U, Cha, S-M, Kim, D-J, Lee, Y, Dominik, M, Jørgensen, UG, Andersen, MI, Bramich, DM, Burgdorf, MJ, Ciceri, S, D’Ago, G, Evans, DF, Figuera Jaimes, R, Gu, S-H, Hinse, TC, Kains, N, Kerins, E, Korhonen, H, Kuffmeier, M, Mancini, L, Popovas, A, Rabus, M, Rahvar, S, Rasmussen, RT, Scarpetta, G, Skottfelt, J, Snodgrass, C, Southworth, J, Surdej, J, Unda-Sanzana, E, von Essen, C, Wang, Y-B, Wertz, O, Maoz, D, Friedmann, M & Kaspi, S 2016, 'Spitzer observations of OGLE-2015-BLG-1212 reveal a new path toward breaking strong microlens degeneracies', Astrophysical Journal, vol. 820, no. 1, 79. https://doi.org/10.3847/0004-637X/820/1/79

TY - JOUR

T1 - Spitzer observations of OGLE-2015-BLG-1212 reveal a new path toward breaking strong microlens degeneracies

AU - Bozza, V.

AU - Shvartzvald, Y.

AU - Udalski, A.

AU - Calchi Novati, S.

AU - Bond, I. A.

AU - Han, C.

AU - Hundertmark, M.

AU - Poleski, R.

AU - Pawlak, M.

AU - Szymański, M. K.

AU - Skowron, J.

AU - Mróz, P.

AU - Kozłowski, S.

AU - Wyrzykowski, Ł.

AU - Pietrukowicz, P.

AU - Soszyński, I.

AU - Ulaczyk, K.

AU - Beichman, C.

AU - Bryden, G.

AU - Carey, S.

AU - Fausnaugh, M.

AU - Gaudi, B. S.

AU - Gould, A.

AU - Henderson, C. B.

AU - Pogge, R. W.

AU - Wibking, B.

AU - Yee, J. C.

AU - Zhu, W.

AU - Abe, F.

AU - Asakura, Y.

AU - Barry, R. K.

AU - Bennett, D. P.

AU - Bhattacharya, A.

AU - Donachie, M.

AU - Freeman, M.

AU - Fukui, A.

AU - Hirao, Y.

AU - Inayama, K.

AU - Itow, Y.

AU - Koshimoto, N.

AU - Li, M. C. A.

AU - Ling, C. H.

AU - Masuda, K.

AU - Matsubara, Y.

AU - Muraki, Y.

AU - Nagakane, M.

AU - Nishioka, T.

AU - Ohnishi, K.

AU - Oyokawa, H.

AU - Rattenbury, N.

AU - Saito, To.

AU - Sharan, A.

AU - Sullivan, D. J.

AU - Sumi, T.

AU - Suzuki, D.

AU - Tristram, P. J.

AU - Wakiyama, Y.

AU - Yonehara, A.

AU - Choi, J.-Y.

AU - Park, H.

AU - Jung, Y. K.

AU - Shin, I.-G.

AU - Albrow, M. D.

AU - Park, B.-G.

AU - Kim, S.-L.

AU - Lee, C.-U.

AU - Cha, S.-M.

AU - Kim, D.-J.

AU - Lee, Y.

AU - Dominik, M.

AU - Jørgensen, U. G.

AU - Andersen, M. I.

AU - Bramich, D. M.

AU - Burgdorf, M. J.

AU - Ciceri, S.

AU - D’Ago, G.

AU - Evans, D. F.

AU - Figuera Jaimes, R.

AU - Gu, S.-H.

AU - Hinse, T. C.

AU - Kains, N.

AU - Kerins, E.

AU - Korhonen, H.

AU - Kuffmeier, M.

AU - Mancini, L.

AU - Popovas, A.

AU - Rabus, M.

AU - Rahvar, S.

AU - Rasmussen, R. T.

AU - Scarpetta, G.

AU - Skottfelt, J.

AU - Snodgrass, C.

AU - Southworth, J.

AU - Surdej, J.

AU - Unda-Sanzana, E.

AU - von Essen, C.

AU - Wang, Y.-B.

AU - Wertz, O.

AU - Maoz, D.

AU - Friedmann, M.

AU - Kaspi, S.

N1 - The OGLE project has received funding from the National Science Centre, Poland, grant MAESTRO 2014/14/A/ST9/00121 to A.U. Work by Y.S. and C.B.H. was supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Oak Ridge Associated Universities through a contract with NASA. Work by C.H. was supported by Creative Research Initiative Program (2009-0081561) of National Research Foundation of Korea. J.C.Y., A.G., and S.C.N. acknowledge support by JPL grant 1500811. Work by W.Z. and A.G. was supported by NSF AST 1516842. Work by J.C.Y. was performed under contract with the California Institute of Technology (Caltech)/Jet Propulsion Laboratory (JPL) funded by NASA through the Sagan Fellowship Program executed by the NASA Exoplanet Science Institute. T.S. acknowledges the financial support from the JSPS, JSPS23103002, JSPS24253004, and JSPS26247023. The MOA project is supported by grants JSPS25103508 and JSPS23340064.

PY - 2016/3/21

Y1 - 2016/3/21

N2 - Spitzer microlensing parallax observations of OGLE-2015-BLG-1212decisively break a degeneracy between planetary and binary solutionsthat is somewhat ambiguous when only ground-based data are considered.Only eight viable models survive out of an initial set of 32 localminima in the parameter space. These models clearly indicate that thelens is a stellar binary system possibly located within the bulge of ourGalaxy, ruling out the planetary alternative. We argue that severaltypes of discrete degeneracies can be broken via such space-basedparallax observations.

AB - Spitzer microlensing parallax observations of OGLE-2015-BLG-1212decisively break a degeneracy between planetary and binary solutionsthat is somewhat ambiguous when only ground-based data are considered.Only eight viable models survive out of an initial set of 32 localminima in the parameter space. These models clearly indicate that thelens is a stellar binary system possibly located within the bulge of ourGalaxy, ruling out the planetary alternative. We argue that severaltypes of discrete degeneracies can be broken via such space-basedparallax observations.

KW - Binaries: general

KW - Galaxy: bulge

KW - Gravitational lensing: micro

KW - Planets and satellites: detection

KW - Space vehicles

U2 - 10.3847/0004-637X/820/1/79

DO - 10.3847/0004-637X/820/1/79

M3 - Article

SN - 0004-637X

VL - 820

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 79

ER -

Spitzer observations of OGLE-2015-BLG-1212 reveal a new path toward breaking strong microlens degeneracies

Abstract

Keywords

Access to Document

Fingerprint

Projects

Planet population statistics: Planet population statistics from fully-deterministic microlensing campaigns

Cite this