AT2021uey: a planetary microlensing event outside the Galactic bulge

M. Ban; P. Voloshyn; R. Adomaviciene; E. Bachelet; V. Bozza; S. M. Brincat; I. Bruni; U. Burgaz; J. M. Carrasco; A. Cassan; V. Cepas; F. Cusano; M. Dennefeld; M. Dominik; F. Dubois; R. Figuera Jaimes; A. Fukui; C. Galdies; A. Garofalo; M. Hundertmark; I. Ilyin; K. Kruszynska; V. Kulijanishvili; T. Kvernadze; L. Logie; M. Maskoliunas; P. J. Mikolajczyk; P. Mroz; N. Narita; E. Pakstiene; J. Peloton; R. Poleski; J. K. T. Qvam; S. Rau; P. Rota; K. A. Rybicki; R. A. Street; Y. Tsapras; S. Vanaverbeke; J. Wambsganss; L. Wyrzykowski; J. Zdanavicius; M. Zejmo; P. Zielinski; S. Zola

AT2021uey: a planetary microlensing event outside the Galactic bulge

M. Ban, P. Voloshyn, R. Adomaviciene, E. Bachelet, V. Bozza, S. M. Brincat, I. Bruni, U. Burgaz, J. M. Carrasco, A. Cassan, V. Cepas, F. Cusano, M. Dennefeld, M. Dominik, F. Dubois, R. Figuera Jaimes, A. Fukui, C. Galdies, A. Garofalo, M. HundertmarkI. Ilyin, K. Kruszynska, V. Kulijanishvili, T. Kvernadze, L. Logie, M. Maskoliunas, P. J. Mikolajczyk, P. Mroz, N. Narita, E. Pakstiene, J. Peloton, R. Poleski, J. K. T. Qvam, S. Rau, P. Rota, K. A. Rybicki, R. A. Street, Y. Tsapras, S. Vanaverbeke, J. Wambsganss, L. Wyrzykowski, J. Zdanavicius, M. Zejmo, P. Zielinski, S. Zola

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

Abstract

We report the analysis of a planetary microlensing event AT2021uey. The event was observed outside the Galactic bulge and was alerted by both space- (Gaia) and ground-based (ZTF and ASAS-SN) surveys. From the observed data, we find that the lens system is located at a distance of1 kpc and comprises an M-dwarf host star of about half a solar mass, orbited by a Jupiter-like planet beyond the snowline. The source star could be a metal-poor giant located in the halo according to the spectral analyses and modelling. Hence, AT2021uey is a unique example ofthe binary-lens event outside the bulge that is offered by a disc-halo lens-source combination.

Original language	English
Journal	Astronomy & Astrophysics
Publication status	Accepted/In press - 27 Mar 2025

Keywords

Earth and planetary astrophysics
Astrophysics of galaxies

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http://adsabs.harvard.edu/abs/2025arXiv250322331B

Cite this

Ban, M., Voloshyn, P., Adomaviciene, R., Bachelet, E., Bozza, V., Brincat, S. M., Bruni, I., Burgaz, U., Carrasco, J. M., Cassan, A., Cepas, V., Cusano, F., Dennefeld, M., Dominik, M., Dubois, F., Figuera Jaimes, R., Fukui, A., Galdies, C., Garofalo, A., ... Zola, S. (Accepted/In press). AT2021uey: a planetary microlensing event outside the Galactic bulge. Astronomy & Astrophysics. http://adsabs.harvard.edu/abs/2025arXiv250322331B

@article{0cd041c05ee44e8c9ef89cad5a4df8ac,

title = "AT2021uey: a planetary microlensing event outside the Galactic bulge",

abstract = "We report the analysis of a planetary microlensing event AT2021uey. The event was observed outside the Galactic bulge and was alerted by both space- (Gaia) and ground-based (ZTF and ASAS-SN) surveys. From the observed data, we find that the lens system is located at a distance of1 kpc and comprises an M-dwarf host star of about half a solar mass, orbited by a Jupiter-like planet beyond the snowline. The source star could be a metal-poor giant located in the halo according to the spectral analyses and modelling. Hence, AT2021uey is a unique example ofthe binary-lens event outside the bulge that is offered by a disc-halo lens-source combination.",

keywords = "Earth and planetary astrophysics, Astrophysics of galaxies",

author = "M. Ban and P. Voloshyn and R. Adomaviciene and E. Bachelet and V. Bozza and Brincat, {S. M.} and I. Bruni and U. Burgaz and Carrasco, {J. M.} and A. Cassan and V. Cepas and F. Cusano and M. Dennefeld and M. Dominik and F. Dubois and {Figuera Jaimes}, R. and A. Fukui and C. Galdies and A. Garofalo and M. Hundertmark and I. Ilyin and K. Kruszynska and V. Kulijanishvili and T. Kvernadze and L. Logie and M. Maskoliunas and Mikolajczyk, {P. J.} and P. Mroz and N. Narita and E. Pakstiene and J. Peloton and R. Poleski and Qvam, {J. K. T.} and S. Rau and P. Rota and Rybicki, {K. A.} and Street, {R. A.} and Y. Tsapras and S. Vanaverbeke and J. Wambsganss and L. Wyrzykowski and J. Zdanavicius and M. Zejmo and P. Zielinski and S. Zola",

year = "2025",

month = mar,

day = "27",

language = "English",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP SCIENCES S A",

}

Ban, M, Voloshyn, P, Adomaviciene, R, Bachelet, E, Bozza, V, Brincat, SM, Bruni, I, Burgaz, U, Carrasco, JM, Cassan, A, Cepas, V, Cusano, F, Dennefeld, M, Dominik, M, Dubois, F, Figuera Jaimes, R, Fukui, A, Galdies, C, Garofalo, A, Hundertmark, M, Ilyin, I, Kruszynska, K, Kulijanishvili, V, Kvernadze, T, Logie, L, Maskoliunas, M, Mikolajczyk, PJ, Mroz, P, Narita, N, Pakstiene, E, Peloton, J, Poleski, R, Qvam, JKT, Rau, S, Rota, P, Rybicki, KA, Street, RA, Tsapras, Y, Vanaverbeke, S, Wambsganss, J, Wyrzykowski, L, Zdanavicius, J, Zejmo, M, Zielinski, P & Zola, S 2025, 'AT2021uey: a planetary microlensing event outside the Galactic bulge', Astronomy & Astrophysics. <http://adsabs.harvard.edu/abs/2025arXiv250322331B>

TY - JOUR

T1 - AT2021uey

T2 - a planetary microlensing event outside the Galactic bulge

AU - Ban, M.

AU - Voloshyn, P.

AU - Adomaviciene, R.

AU - Bachelet, E.

AU - Bozza, V.

AU - Brincat, S. M.

AU - Bruni, I.

AU - Burgaz, U.

AU - Carrasco, J. M.

AU - Cassan, A.

AU - Cepas, V.

AU - Cusano, F.

AU - Dennefeld, M.

AU - Dominik, M.

AU - Dubois, F.

AU - Figuera Jaimes, R.

AU - Fukui, A.

AU - Galdies, C.

AU - Garofalo, A.

AU - Hundertmark, M.

AU - Ilyin, I.

AU - Kruszynska, K.

AU - Kulijanishvili, V.

AU - Kvernadze, T.

AU - Logie, L.

AU - Maskoliunas, M.

AU - Mikolajczyk, P. J.

AU - Mroz, P.

AU - Narita, N.

AU - Pakstiene, E.

AU - Peloton, J.

AU - Poleski, R.

AU - Qvam, J. K. T.

AU - Rau, S.

AU - Rota, P.

AU - Rybicki, K. A.

AU - Street, R. A.

AU - Tsapras, Y.

AU - Vanaverbeke, S.

AU - Wambsganss, J.

AU - Wyrzykowski, L.

AU - Zdanavicius, J.

AU - Zejmo, M.

AU - Zielinski, P.

AU - Zola, S.

PY - 2025/3/27

Y1 - 2025/3/27

N2 - We report the analysis of a planetary microlensing event AT2021uey. The event was observed outside the Galactic bulge and was alerted by both space- (Gaia) and ground-based (ZTF and ASAS-SN) surveys. From the observed data, we find that the lens system is located at a distance of1 kpc and comprises an M-dwarf host star of about half a solar mass, orbited by a Jupiter-like planet beyond the snowline. The source star could be a metal-poor giant located in the halo according to the spectral analyses and modelling. Hence, AT2021uey is a unique example ofthe binary-lens event outside the bulge that is offered by a disc-halo lens-source combination.

AB - We report the analysis of a planetary microlensing event AT2021uey. The event was observed outside the Galactic bulge and was alerted by both space- (Gaia) and ground-based (ZTF and ASAS-SN) surveys. From the observed data, we find that the lens system is located at a distance of1 kpc and comprises an M-dwarf host star of about half a solar mass, orbited by a Jupiter-like planet beyond the snowline. The source star could be a metal-poor giant located in the halo according to the spectral analyses and modelling. Hence, AT2021uey is a unique example ofthe binary-lens event outside the bulge that is offered by a disc-halo lens-source combination.

KW - Earth and planetary astrophysics

KW - Astrophysics of galaxies

M3 - Article

SN - 0004-6361

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

ER -

AT2021uey: a planetary microlensing event outside the Galactic bulge

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Keywords

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