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; Ł. Wyrzykowski; P. Pietrukowicz; K. Ulaczyk; C. Beichman; G. Bryden; S. Carey; M. Fausnaugh; B. S. Gaudi; A. Gould; C. B. Henderson; B. Wibking; W. Zhu; 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; T. Sumi; D. Suzuki; 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; null KMTNet Group; M. Dominik; U. G. Jørgensen; Michael Ingemann 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; Jesper Mirsa Skottfelt; C. Snodgrass; J. Southworth; J. Surdej; E. Unda-Sanzana; C. von Essen; D. Maoz; M. Friedmann; S. Kaspi; null Wise Group

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, Ł. Wyrzykowski, P. Pietrukowicz, K. Ulaczyk, C. Beichman, G. Bryden, S. Carey, M. Fausnaugh, B. S. GaudiA. Gould, C. B. Henderson, B. Wibking, W. Zhu, 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, T. Sumi, D. Suzuki, 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, KMTNet Group, M. Dominik, U. G. Jørgensen, Michael Ingemann 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, Jesper Mirsa Skottfelt, C. Snodgrass, J. Southworth, J. Surdej, E. Unda-Sanzana, C. von Essen, D. Maoz, M. Friedmann, S. Kaspi, Wise Group

19 Citations (Scopus)

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	The Astrophysical Journal
Volume	820
Issue number	1
ISSN	0004-637X
DOIs	https://doi.org/10.3847/0004-637X/820/1/79
Publication status	Published - 1 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

Bozza_2016_ApJ_820_79Final published version, 689 KB

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., Wyrzykowski, Ł., Pietrukowicz, P., Ulaczyk, K., Beichman, C., Bryden, G., Carey, S., Fausnaugh, M., ... Wise Group (2016). Spitzer Observations of OGLE-2015-BLG-1212 Reveal a New Path toward Breaking Strong Microlens Degeneracies. The Astrophysical Journal, 820(1), [79]. https://doi.org/10.3847/0004-637X/820/1/79

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, Wyrzykowski, Ł, Pietrukowicz, P, Ulaczyk, K, Beichman, C, Bryden, G, Carey, S, Fausnaugh, M, Gaudi, BS, Gould, A, Henderson, CB, Wibking, B, Zhu, W, 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, Sumi, T, Suzuki, D, 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, KMTNet Group, 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, JM, Snodgrass, C, Southworth, J, Surdej, J, Unda-Sanzana, E, von Essen, C, Maoz, D, Friedmann, M, Kaspi, S & Wise Group 2016, 'Spitzer Observations of OGLE-2015-BLG-1212 Reveal a New Path toward Breaking Strong Microlens Degeneracies', The Astrophysical Journal, vol. 820, no. 1, 79. https://doi.org/10.3847/0004-637X/820/1/79

@article{3a89074acfda442bb2315822863b364b,

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 = "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 {\L}. Wyrzykowski and P. Pietrukowicz 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 B. Wibking and W. Zhu 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 T. Sumi and D. Suzuki 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 {KMTNet Group} and M. Dominik and J{\o}rgensen, {U. G.} and Andersen, {Michael Ingemann} and Bramich, {D. M.} and Burgdorf, {M. J.} and S. Ciceri and G. D'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 Skottfelt, {Jesper Mirsa} and C. Snodgrass and J. Southworth and J. Surdej and E. Unda-Sanzana and {von Essen}, C. and D. Maoz and M. Friedmann and S. Kaspi and {Wise Group}",

year = "2016",

month = mar,

day = "1",

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

language = "English",

volume = "820",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "Institute of Physics Publishing, Inc",

number = "1",

}

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 - Wyrzykowski, Ł.

AU - Pietrukowicz, P.

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 - Wibking, B.

AU - Zhu, W.

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 - Sumi, T.

AU - Suzuki, D.

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 - KMTNet Group, null

AU - Dominik, M.

AU - Jørgensen, U. G.

AU - Andersen, Michael Ingemann

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, Jesper Mirsa

AU - Snodgrass, C.

AU - Southworth, J.

AU - Surdej, J.

AU - Unda-Sanzana, E.

AU - von Essen, C.

AU - Maoz, D.

AU - Friedmann, M.

AU - Kaspi, S.

AU - Wise Group, null

PY - 2016/3/1

Y1 - 2016/3/1

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 - 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 - Journal 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

Cite this