A terrestrial planet in a ∼1-AU orbit around one member of a ∼15-AU binary

A. Gould; A. Udalski; I. G. Shin; I. Porritt; J. Skowron; C. Han; J. C. Yee; S. Kozłowski; J. Y. Choi; R. Poleski; null Wyrzykowski; K. Ulaczyk; P. Pietrukowicz; P. Mróz; M. K. Szymański; M. Kubiak; I. Soszyński; G. Pietrzyński; B. S. Gaudi; G. W. Christie; J. Drummond; J. McCormick; T. Natusch; H. Ngan; T. G. Tan; M. Albrow; D. L. DePoy; K. H. Hwang; Y. K. Jung; C. U. Lee; H. Park; R. W. Pogge; F. Abe; D. P. Bennett; I. A. Bond; C. S. Botzler; M. Freeman; A. Fukui; D. Fukunaga; Y. Itow; N. Koshimoto; P. Larsen; C. H. Ling; K. Masuda; Y. Matsubara; Y. Muraki; S. Namba; K. Ohnishi; L. Philpott; N. J. Rattenbury; To Saito; D. J. Sullivan; T. Sumi; D. Suzuki; P. J. Tristram; N. Tsurumi; K. Wada; N. Yamai; P. C.M. Yock; A. Yonehara; Y. Shvartzvald; D. Maoz; S. Kaspi; M. Friedmann

doi:https://doi.org/10.1126/science.1251527

A terrestrial planet in a ∼1-AU orbit around one member of a ∼15-AU binary

A. Gould, A. Udalski, I. G. Shin, I. Porritt, J. Skowron, C. Han, J. C. Yee, S. Kozłowski, J. Y. Choi, R. Poleski, Wyrzykowski, K. Ulaczyk, P. Pietrukowicz, P. Mróz, M. K. Szymański, M. Kubiak, I. Soszyński, G. Pietrzyński, B. S. Gaudi, G. W. ChristieJ. Drummond, J. McCormick, T. Natusch, H. Ngan, T. G. Tan, M. Albrow, D. L. DePoy, K. H. Hwang, Y. K. Jung, C. U. Lee, H. Park, R. W. Pogge, F. Abe, D. P. Bennett, I. A. Bond, C. S. Botzler, M. Freeman, A. Fukui, D. Fukunaga, Y. Itow, N. Koshimoto, P. Larsen, C. H. Ling, K. Masuda, Y. Matsubara, Y. Muraki, S. Namba, K. Ohnishi, L. Philpott, N. J. Rattenbury, To Saito, D. J. Sullivan, T. Sumi, D. Suzuki, P. J. Tristram, N. Tsurumi, K. Wada, N. Yamai, P. C.M. Yock, A. Yonehara, Y. Shvartzvald, D. Maoz, S. Kaspi, M. Friedmann

School of Physics and Astronomy

Tel Aviv University

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

Abstract

Using gravitational microlensing, we detected a cold terrestrial planet orbiting one member of a binary star system. The planet has low mass (twice Earth's) and lies projected at ∼0.8 astronomical units (AU) from its host star, about the distance between Earth and the Sun. However, the planet's temperature is much lower, <60 Kelvin, because the host star is only 0.10 to 0.15 solar masses and therefore more than 400 times less luminous than the Sun. The host itself orbits a slightly more massive companion with projected separation of 10 to 15 AU. This detection is consistent with such systems being very common. Straightforward modification of current microlensing search strategies could increase sensitivity to planets in binary systems. With more detections, such binary-star planetary systems could constrain models of planet formation and evolution.

Original language	English
Pages (from-to)	46-49
Number of pages	4
Journal	Science
Volume	345
Issue number	6192
DOIs	https://doi.org/10.1126/science.1251527
State	Published - 2014

All Science Journal Classification (ASJC) codes

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Gould, A., Udalski, A., Shin, I. G., Porritt, I., Skowron, J., Han, C., Yee, J. C., Kozłowski, S., Choi, J. Y., Poleski, R., Wyrzykowski, Ulaczyk, K., Pietrukowicz, P., Mróz, P., Szymański, M. K., Kubiak, M., Soszyński, I., Pietrzyński, G., Gaudi, B. S., ... Friedmann, M. (2014). A terrestrial planet in a ∼1-AU orbit around one member of a ∼15-AU binary. Science, 345(6192), 46-49. https://doi.org/10.1126/science.1251527

@article{96acf6cbd3b747158485f88cdee2f492,

title = "A terrestrial planet in a ∼1-AU orbit around one member of a ∼15-AU binary",

abstract = "Using gravitational microlensing, we detected a cold terrestrial planet orbiting one member of a binary star system. The planet has low mass (twice Earth's) and lies projected at ∼0.8 astronomical units (AU) from its host star, about the distance between Earth and the Sun. However, the planet's temperature is much lower, <60 Kelvin, because the host star is only 0.10 to 0.15 solar masses and therefore more than 400 times less luminous than the Sun. The host itself orbits a slightly more massive companion with projected separation of 10 to 15 AU. This detection is consistent with such systems being very common. Straightforward modification of current microlensing search strategies could increase sensitivity to planets in binary systems. With more detections, such binary-star planetary systems could constrain models of planet formation and evolution.",

author = "A. Gould and A. Udalski and Shin, {I. G.} and I. Porritt and J. Skowron and C. Han and Yee, {J. C.} and S. Koz{\l}owski and Choi, {J. Y.} and R. Poleski and Wyrzykowski and K. Ulaczyk and P. Pietrukowicz and P. Mr{\'o}z and Szyma{\'n}ski, {M. K.} and M. Kubiak and I. Soszy{\'n}ski and G. Pietrzy{\'n}ski and Gaudi, {B. S.} and Christie, {G. W.} and J. Drummond and J. McCormick and T. Natusch and H. Ngan and Tan, {T. G.} and M. Albrow and DePoy, {D. L.} and Hwang, {K. H.} and Jung, {Y. K.} and Lee, {C. U.} and H. Park and Pogge, {R. W.} and F. Abe and Bennett, {D. P.} and Bond, {I. A.} and Botzler, {C. S.} and M. Freeman and A. Fukui and D. Fukunaga and Y. Itow and N. Koshimoto and P. Larsen and Ling, {C. H.} and K. Masuda and Y. Matsubara and Y. Muraki and S. Namba and K. Ohnishi and L. Philpott and Rattenbury, {N. J.} and To Saito and Sullivan, {D. J.} and T. Sumi and D. Suzuki and Tristram, {P. J.} and N. Tsurumi and K. Wada and N. Yamai and Yock, {P. C.M.} and A. Yonehara and Y. Shvartzvald and D. Maoz and S. Kaspi and M. Friedmann",

year = "2014",

doi = "https://doi.org/10.1126/science.1251527",

language = "الإنجليزيّة",

volume = "345",

pages = "46--49",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "6192",

}

Gould, A, Udalski, A, Shin, IG, Porritt, I, Skowron, J, Han, C, Yee, JC, Kozłowski, S, Choi, JY, Poleski, R, Wyrzykowski, Ulaczyk, K, Pietrukowicz, P, Mróz, P, Szymański, MK, Kubiak, M, Soszyński, I, Pietrzyński, G, Gaudi, BS, Christie, GW, Drummond, J, McCormick, J, Natusch, T, Ngan, H, Tan, TG, Albrow, M, DePoy, DL, Hwang, KH, Jung, YK, Lee, CU, Park, H, Pogge, RW, Abe, F, Bennett, DP, Bond, IA, Botzler, CS, Freeman, M, Fukui, A, Fukunaga, D, Itow, Y, Koshimoto, N, Larsen, P, Ling, CH, Masuda, K, Matsubara, Y, Muraki, Y, Namba, S, Ohnishi, K, Philpott, L, Rattenbury, NJ, Saito, T, Sullivan, DJ, Sumi, T, Suzuki, D, Tristram, PJ, Tsurumi, N, Wada, K, Yamai, N, Yock, PCM, Yonehara, A, Shvartzvald, Y, Maoz, D, Kaspi, S & Friedmann, M 2014, 'A terrestrial planet in a ∼1-AU orbit around one member of a ∼15-AU binary', Science, vol. 345, no. 6192, pp. 46-49. https://doi.org/10.1126/science.1251527

TY - JOUR

T1 - A terrestrial planet in a ∼1-AU orbit around one member of a ∼15-AU binary

AU - Gould, A.

AU - Udalski, A.

AU - Shin, I. G.

AU - Porritt, I.

AU - Skowron, J.

AU - Han, C.

AU - Yee, J. C.

AU - Kozłowski, S.

AU - Choi, J. Y.

AU - Poleski, R.

AU - Wyrzykowski, null

AU - Ulaczyk, K.

AU - Pietrukowicz, P.

AU - Mróz, P.

AU - Szymański, M. K.

AU - Kubiak, M.

AU - Soszyński, I.

AU - Pietrzyński, G.

AU - Gaudi, B. S.

AU - Christie, G. W.

AU - Drummond, J.

AU - McCormick, J.

AU - Natusch, T.

AU - Ngan, H.

AU - Tan, T. G.

AU - Albrow, M.

AU - DePoy, D. L.

AU - Hwang, K. H.

AU - Jung, Y. K.

AU - Lee, C. U.

AU - Park, H.

AU - Pogge, R. W.

AU - Abe, F.

AU - Bennett, D. P.

AU - Bond, I. A.

AU - Botzler, C. S.

AU - Freeman, M.

AU - Fukui, A.

AU - Fukunaga, D.

AU - Itow, Y.

AU - Koshimoto, N.

AU - Larsen, P.

AU - Ling, C. H.

AU - Masuda, K.

AU - Matsubara, Y.

AU - Muraki, Y.

AU - Namba, S.

AU - Ohnishi, K.

AU - Philpott, L.

AU - Rattenbury, N. J.

AU - Saito, To

AU - Sullivan, D. J.

AU - Sumi, T.

AU - Suzuki, D.

AU - Tristram, P. J.

AU - Tsurumi, N.

AU - Wada, K.

AU - Yamai, N.

AU - Yock, P. C.M.

AU - Yonehara, A.

AU - Shvartzvald, Y.

AU - Maoz, D.

AU - Kaspi, S.

AU - Friedmann, M.

PY - 2014

Y1 - 2014

N2 - Using gravitational microlensing, we detected a cold terrestrial planet orbiting one member of a binary star system. The planet has low mass (twice Earth's) and lies projected at ∼0.8 astronomical units (AU) from its host star, about the distance between Earth and the Sun. However, the planet's temperature is much lower, <60 Kelvin, because the host star is only 0.10 to 0.15 solar masses and therefore more than 400 times less luminous than the Sun. The host itself orbits a slightly more massive companion with projected separation of 10 to 15 AU. This detection is consistent with such systems being very common. Straightforward modification of current microlensing search strategies could increase sensitivity to planets in binary systems. With more detections, such binary-star planetary systems could constrain models of planet formation and evolution.

AB - Using gravitational microlensing, we detected a cold terrestrial planet orbiting one member of a binary star system. The planet has low mass (twice Earth's) and lies projected at ∼0.8 astronomical units (AU) from its host star, about the distance between Earth and the Sun. However, the planet's temperature is much lower, <60 Kelvin, because the host star is only 0.10 to 0.15 solar masses and therefore more than 400 times less luminous than the Sun. The host itself orbits a slightly more massive companion with projected separation of 10 to 15 AU. This detection is consistent with such systems being very common. Straightforward modification of current microlensing search strategies could increase sensitivity to planets in binary systems. With more detections, such binary-star planetary systems could constrain models of planet formation and evolution.

UR - http://www.scopus.com/inward/record.url?scp=84903723720&partnerID=8YFLogxK

U2 - https://doi.org/10.1126/science.1251527

DO - https://doi.org/10.1126/science.1251527

M3 - مقالة

SN - 0036-8075

VL - 345

SP - 46

EP - 49

JO - Science

JF - Science

IS - 6192

ER -

A terrestrial planet in a ∼1-AU orbit around one member of a ∼15-AU binary

Abstract

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