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; 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, 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

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21 Scopus citations

Abstract

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

Original language	English
Article number	79
Journal	Astrophysical Journal
Volume	820
Issue number	1
DOIs	https://doi.org/10.3847/0004-637X/820/1/79
State	Published - 20 Mar 2016

Funding

Funders	Funder number
Science and Technology Facilities Council	ST/L000768/1, ST/H005307/1, ST/L004569/1
Fundação para a Ciência e a Tecnologia	PTDC/CCI-BIO/29266/2017
National Science Foundation	1516842
Japan Society for the Promotion of Science	23340064, 24253004

Keywords

Galaxy: bulge
binaries: general
gravitational lensing: micro
planets and satellites: detection
space vehicles

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

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Bozza, V., Shvartzvald, Y., Udalski, A., Novati, S. C., Bond, I. A., Han, C., Hundertmark, M., Poleski, R., Pawlak, M., Szymański, M. K., Skowron, J., Mróz, P., Kozłowski, S., Wyrzykowski, 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

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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-1212 decisively break a degeneracy between planetary and binary solutions that is somewhat ambiguous when only ground-based data are considered. Only eight viable models survive out of an initial set of 32 local minima in the parameter space. These models clearly indicate that the lens is a stellar binary system possibly located within the bulge of our Galaxy, ruling out the planetary alternative. We argue that several types of discrete degeneracies can be broken via such space-based parallax observations.",

keywords = "Galaxy: bulge, binaries: general, gravitational lensing: micro, planets and satellites: detection, space vehicles",

author = "V. Bozza and Y. Shvartzvald and A. Udalski and Novati, \{S. Calchi\} 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 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 Choi, \{J. Y.\} and H. Park and Jung, \{Y. K.\} and Shin, \{I. G.\} and Albrow, \{M. D.\} and Park, \{B. G.\} and Kim, \{S. L.\} and Lee, \{C. U.\} and Cha, \{S. M.\} and Kim, \{D. J.\} 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'Ago and Evans, \{D. F.\} and Jaimes, \{R. Figuera\} and Gu, \{S. H.\} 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 Wang, \{Y. B.\} and O. Wertz and D. Maoz and M. Friedmann and S. Kaspi",

year = "2016",

month = mar,

day = "20",

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

language = "אנגלית",

volume = "820",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

Bozza, V, Shvartzvald, Y, Udalski, A, Novati, SC, Bond, IA, Han, C, Hundertmark, M, Poleski, R, Pawlak, M, Szymański, MK, Skowron, J, Mróz, P, Kozłowski, S, Wyrzykowski, 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, JY, Park, H, Jung, YK, Shin, IG, Albrow, MD, Park, BG, Kim, SL, Lee, CU, Cha, SM, Kim, DJ, Lee, Y, Dominik, M, JØrgensen, UG, Andersen, MI, Bramich, DM, Burgdorf, MJ, Ciceri, S, D'Ago, G, Evans, DF, Jaimes, RF, Gu, SH, 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, YB, 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 - Novati, S. Calchi

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,

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 - Jaimes, R. Figuera

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.

PY - 2016/3/20

Y1 - 2016/3/20

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

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

KW - Galaxy: bulge

KW - binaries: general

KW - gravitational lensing: micro

KW - planets and satellites: detection

KW - space vehicles

UR - https://www.scopus.com/pages/publications/84961575256

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

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

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84961575256

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

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