Lens mass estimate in the galactic disk extreme parallax microlensing event Gaia19dke

M. Maskoliūnas; Ł. Wyrzykowski; K. Howil; P. J. Mikołajczyk; P. Zieliński; Z. Kaczmarek; K. Kruszyńska; M. Jabłońska; J. Zdanavičius; E. Pakštienė; V. Čepas; K. A. Rybicki; R. Janulis; E. Stonkutė; M. Gromadzki; N. Ihanec; R. Adomavičienė; K. Šiškauskaitė; M. Bronikowski; P. Sivak; A. Stankevičiūtė; M. Sitek; M. Ratajczak; U. Pylypenko; I. Gezer; S. Awiphan; E. Bachelet; K. Bąkowska; R. P. Boyle; V. Bozza; S. M. Brincat; U. Burgaz; T. Butterley; J. M. Carrasco; A. Cassan; F. Cusano; G. Damljanovic; J. W. Davidson; V. S. Dhillon; M. Dominik; F. Dubois; H. H. Esenoglu; R. Figuera Jaimes; A. Fukui; C. Galdies; A. Garofalo; V. Godunova; T. Güver; F. Hansdorfer; J. Heidt; M. Hundertmark; I. Izviekova; B. Joachimczyk; M. K. Kamińska; K. Kamiński; S. Kaptan; T. Kvernadze; O. Kvaratskhelia; K. Kotysz; S. Littlefair; O. Michniewicz; N. Nakhatutai; W. Ogłoza; R. Ohsawa; J. M. Olszewska; R. Poleski; M. Polińska; A. Popowicz; J. K. T. Qvam; M. Radziwonowicz; D. E. Reichart; A. Słowikowska; A. Simon; E. Sonbas; M. Stojanovic; M. Szkudlarek; Y. Tsapras; S. Vanaverbeke; J. Wambsganss; R. W. Wilson; S. Zola

doi:10.32023/0001-5237/74.2.1

Lens mass estimate in the galactic disk extreme parallax microlensing event Gaia19dke

M. Maskoliūnas, Ł. Wyrzykowski, K. Howil, P. J. Mikołajczyk, P. Zieliński, Z. Kaczmarek, K. Kruszyńska, M. Jabłońska, J. Zdanavičius, E. Pakštienė, V. Čepas, K. A. Rybicki, R. Janulis, E. Stonkutė, M. Gromadzki, N. Ihanec, R. Adomavičienė, K. Šiškauskaitė, M. Bronikowski, P. SivakA. Stankevičiūtė, M. Sitek, M. Ratajczak, U. Pylypenko, I. Gezer, S. Awiphan, E. Bachelet, K. Bąkowska, R. P. Boyle, V. Bozza, S. M. Brincat, U. Burgaz, T. Butterley, J. M. Carrasco, A. Cassan, F. Cusano, G. Damljanovic, J. W. Davidson, V. S. Dhillon, M. Dominik, F. Dubois, H. H. Esenoglu, R. Figuera Jaimes, A. Fukui, C. Galdies, A. Garofalo, V. Godunova, T. Güver, F. Hansdorfer, J. Heidt, M. Hundertmark, I. Izviekova, B. Joachimczyk, M. K. Kamińska, K. Kamiński, S. Kaptan, T. Kvernadze, O. Kvaratskhelia, K. Kotysz, S. Littlefair, O. Michniewicz, N. Nakhatutai, W. Ogłoza, R. Ohsawa, J. M. Olszewska, R. Poleski, M. Polińska, A. Popowicz, J. K. T. Qvam, M. Radziwonowicz, D. E. Reichart, A. Słowikowska, A. Simon, E. Sonbas, M. Stojanovic, M. Szkudlarek, Y. Tsapras, S. Vanaverbeke, J. Wambsganss, R. W. Wilson, S. Zola

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

Abstract

We present the results of our analysis of Gaia19dke, an extraordinary microlensing event in the Cygnus constellation that the Gaia satellite discovered. This event featured a strong microlensing parallax effect, resulting in multiple light curve peaks. We conducted extensive photometric, spectroscopic, and high-resolution imaging follow-up observations to determine the mass and nature of the invisible lensing object. Using the Milky Way priors on the density and proper motion of lenses, we found that the lens is likely to be located at a distance of D_L=3.3^+2.1_-1.7 kpc, and has a mass of M_L=0.50^+0.82_-0.27 M_☉. Based on its low luminosity and mass, we propose that the lens in the Gaia19dke event is either a main sequence star or an isolated white dwarf. Due to its brightness, longevity, and lack of blending, Gaia19dke is a target for which the forthcoming Gaia Data Release 4 data will help to constrain the parameters of the lens.

Original language	English
Pages (from-to)	77–111
Number of pages	35
Journal	Acta Astronomica
Volume	74
Issue number	2
DOIs	https://doi.org/10.32023/0001-5237/74.2.1
Publication status	Published - 9 Nov 2024

Keywords

Gravitational lensing: micro
Stars: fundamental parameters
White dwarfs

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10.32023/0001-5237/74.2.1

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Maskoliūnas, M., Wyrzykowski, Ł., Howil, K., Mikołajczyk, P. J., Zieliński, P., Kaczmarek, Z., Kruszyńska, K., Jabłońska, M., Zdanavičius, J., Pakštienė, E., Čepas, V., Rybicki, K. A., Janulis, R., Stonkutė, E., Gromadzki, M., Ihanec, N., Adomavičienė, R., Šiškauskaitė, K., Bronikowski, M., ... Zola, S. (2024). Lens mass estimate in the galactic disk extreme parallax microlensing event Gaia19dke. Acta Astronomica, 74(2), 77–111. https://doi.org/10.32023/0001-5237/74.2.1

@article{79ab2e20854c411fb6a10c47d01fc12a,

title = "Lens mass estimate in the galactic disk extreme parallax microlensing event Gaia19dke",

abstract = "We present the results of our analysis of Gaia19dke, an extraordinary microlensing event in the Cygnus constellation that the Gaia satellite discovered. This event featured a strong microlensing parallax effect, resulting in multiple light curve peaks. We conducted extensive photometric, spectroscopic, and high-resolution imaging follow-up observations to determine the mass and nature of the invisible lensing object. Using the Milky Way priors on the density and proper motion of lenses, we found that the lens is likely to be located at a distance of DL=3.3+2.1-1.7 kpc, and has a mass of ML=0.50+0.82-0.27 M☉. Based on its low luminosity and mass, we propose that the lens in the Gaia19dke event is either a main sequence star or an isolated white dwarf. Due to its brightness, longevity, and lack of blending, Gaia19dke is a target for which the forthcoming Gaia Data Release 4 data will help to constrain the parameters of the lens.",

keywords = "Gravitational lensing: micro, Stars: fundamental parameters, White dwarfs",

author = "M. Maskoliūnas and {\L}. Wyrzykowski and K. Howil and Miko{\l}ajczyk, \{P. J.\} and P. Zieli{\'n}ski and Z. Kaczmarek and K. Kruszy{\'n}ska and M. Jab{\l}o{\'n}ska and J. Zdanavi{\v c}ius and E. Pak{\v s}tienė and V. {\v C}epas and Rybicki, \{K. A.\} and R. Janulis and E. Stonkutė and M. Gromadzki and N. Ihanec and R. Adomavi{\v c}ienė and K. {\v S}i{\v s}kauskaitė and M. Bronikowski and P. Sivak and A. Stankevi{\v c}iūtė and M. Sitek and M. Ratajczak and U. Pylypenko and I. Gezer and S. Awiphan and E. Bachelet and K. B{\c a}kowska and Boyle, \{R. P.\} and V. Bozza and Brincat, \{S. M.\} and U. Burgaz and T. Butterley and Carrasco, \{J. M.\} and A. Cassan and F. Cusano and G. Damljanovic and Davidson, \{J. W.\} and Dhillon, \{V. S.\} and M. Dominik and F. Dubois and Esenoglu, \{H. H.\} and \{Figuera Jaimes\}, R. and A. Fukui and C. Galdies and A. Garofalo and V. Godunova and T. G{\"u}ver and F. Hansdorfer and J. Heidt and M. Hundertmark and I. Izviekova and B. Joachimczyk and Kami{\'n}ska, \{M. K.\} and K. Kami{\'n}ski and S. Kaptan and T. Kvernadze and O. Kvaratskhelia and K. Kotysz and S. Littlefair and O. Michniewicz and N. Nakhatutai and W. Og{\l}oza and R. Ohsawa and Olszewska, \{J. M.\} and R. Poleski and M. Poli{\'n}ska and A. Popowicz and Qvam, \{J. K. T.\} and M. Radziwonowicz and Reichart, \{D. E.\} and A. S{\l}owikowska and A. Simon and E. Sonbas and M. Stojanovic and M. Szkudlarek and Y. Tsapras and S. Vanaverbeke and J. Wambsganss and Wilson, \{R. W.\} and S. Zola",

note = "Funding: This work is supported by Polish NCN grants: Daina No. 2017/27/L/ST9/03221, grants No. S-LL-19-2 and No. S-MIP-23-89 of the Research Council of Lithuania, Harmonia No. 2018/30/M/ST9/00311, Preludium No. 2017/25/N/ST9/01253, Opus No. 2017/25/B/ST9/02805 and MNiSW grant DIR/WK/2018/12. This project used data obtained via BHTOM (https://bhtom.space), which has received funding from the European Union{\textquoteright}s Horizon 2020 research and innovation programme under grant agreements No. 730890 (OPTICON) and 101004719 (ORP) and Horizon Europe programme No. 101131928 (ACME). T.G. was supported by the Scientific Research Projects Coordination Unit of Istanbul University, project number: FBG-2017-23943 and the Turkish Republic, Presidency of Strategy and Budget project, project number: 2016K121370. G. Damljanovi{\'c} and M. Stojanovi{\'c} acknowledge support by the Astronomical station Vidojevica, funding from the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (contract No. 451-03-66/2024-03/200002), by the EC through project BELISSIMA (call FP7-REGPOT-2010-5, No. 256772), the observing and financial grant support from the Institute of Astronomy and Rozhen NAO BAS through the bilateral SANU-BAN joint research project {"}GAIA astrometry and fast variable astronomical objects{"}, and support by the SANU project F-187. YT acknowledges the support of the DFG priority program SPP 1992 “Exploring the Diversity of Extrasolar Planets” (TS 356/3-1). Josep Manel Carrasco was (partially) supported by the Spanish MICIN/AEI/10.13039/501100011033 and by {"}ERDF A way of making Europe by the European Union” through grant PID2021-122842OB-C2P1, and the Institute of Cosmos Sciences University of Barcelona (ICCUB, Unidad de Excelencia {"}Mar{\'i}a de Maeztu{"}) through grant CEX2019-000918-M. Nawapon Nakharutai acknowledges the support of Chiang Mai University. AF is supported by JSPS KAKENHI Grant Number JP17H02871. RFJ acknowledges funding by ANID{\textquoteright}s Millennium Science Initiative through grant ICN12\_009, awarded to the Millennium Institute of Astrophysics (MAS), and by ANID{\textquoteright}s Basal project FB210003. Adam Popowicz was financed by grants 02/140/RGJ24/0031 and BK-250/RAu-11/2024.",

year = "2024",

month = nov,

day = "9",

doi = "10.32023/0001-5237/74.2.1",

language = "English",

volume = "74",

pages = "77–111",

journal = "Acta Astronomica",

issn = "0001-5237",

publisher = "Copernicus Foundation for Polish Astronomy",

number = "2",

}

Maskoliūnas, M, Wyrzykowski, Ł, Howil, K, Mikołajczyk, PJ, Zieliński, P, Kaczmarek, Z, Kruszyńska, K, Jabłońska, M, Zdanavičius, J, Pakštienė, E, Čepas, V, Rybicki, KA, Janulis, R, Stonkutė, E, Gromadzki, M, Ihanec, N, Adomavičienė, R, Šiškauskaitė, K, Bronikowski, M, Sivak, P, Stankevičiūtė, A, Sitek, M, Ratajczak, M, Pylypenko, U, Gezer, I, Awiphan, S, Bachelet, E, Bąkowska, K, Boyle, RP, Bozza, V, Brincat, SM, Burgaz, U, Butterley, T, Carrasco, JM, Cassan, A, Cusano, F, Damljanovic, G, Davidson, JW, Dhillon, VS, Dominik, M, Dubois, F, Esenoglu, HH, Figuera Jaimes, R, Fukui, A, Galdies, C, Garofalo, A, Godunova, V, Güver, T, Hansdorfer, F, Heidt, J, Hundertmark, M, Izviekova, I, Joachimczyk, B, Kamińska, MK, Kamiński, K, Kaptan, S, Kvernadze, T, Kvaratskhelia, O, Kotysz, K, Littlefair, S, Michniewicz, O, Nakhatutai, N, Ogłoza, W, Ohsawa, R, Olszewska, JM, Poleski, R, Polińska, M, Popowicz, A, Qvam, JKT, Radziwonowicz, M, Reichart, DE, Słowikowska, A, Simon, A, Sonbas, E, Stojanovic, M, Szkudlarek, M, Tsapras, Y, Vanaverbeke, S, Wambsganss, J, Wilson, RW & Zola, S 2024, 'Lens mass estimate in the galactic disk extreme parallax microlensing event Gaia19dke', Acta Astronomica, vol. 74, no. 2, pp. 77–111. https://doi.org/10.32023/0001-5237/74.2.1

TY - JOUR

T1 - Lens mass estimate in the galactic disk extreme parallax microlensing event Gaia19dke

AU - Maskoliūnas, M.

AU - Wyrzykowski, Ł.

AU - Howil, K.

AU - Mikołajczyk, P. J.

AU - Zieliński, P.

AU - Kaczmarek, Z.

AU - Kruszyńska, K.

AU - Jabłońska, M.

AU - Zdanavičius, J.

AU - Pakštienė, E.

AU - Čepas, V.

AU - Rybicki, K. A.

AU - Janulis, R.

AU - Stonkutė, E.

AU - Gromadzki, M.

AU - Ihanec, N.

AU - Adomavičienė, R.

AU - Šiškauskaitė, K.

AU - Bronikowski, M.

AU - Sivak, P.

AU - Stankevičiūtė, A.

AU - Sitek, M.

AU - Ratajczak, M.

AU - Pylypenko, U.

AU - Gezer, I.

AU - Awiphan, S.

AU - Bachelet, E.

AU - Bąkowska, K.

AU - Boyle, R. P.

AU - Bozza, V.

AU - Brincat, S. M.

AU - Burgaz, U.

AU - Butterley, T.

AU - Carrasco, J. M.

AU - Cassan, A.

AU - Cusano, F.

AU - Damljanovic, G.

AU - Davidson, J. W.

AU - Dhillon, V. S.

AU - Dominik, M.

AU - Dubois, F.

AU - Esenoglu, H. H.

AU - Figuera Jaimes, R.

AU - Fukui, A.

AU - Galdies, C.

AU - Garofalo, A.

AU - Godunova, V.

AU - Güver, T.

AU - Hansdorfer, F.

AU - Heidt, J.

AU - Hundertmark, M.

AU - Izviekova, I.

AU - Joachimczyk, B.

AU - Kamińska, M. K.

AU - Kamiński, K.

AU - Kaptan, S.

AU - Kvernadze, T.

AU - Kvaratskhelia, O.

AU - Kotysz, K.

AU - Littlefair, S.

AU - Michniewicz, O.

AU - Nakhatutai, N.

AU - Ogłoza, W.

AU - Ohsawa, R.

AU - Olszewska, J. M.

AU - Poleski, R.

AU - Polińska, M.

AU - Popowicz, A.

AU - Qvam, J. K. T.

AU - Radziwonowicz, M.

AU - Reichart, D. E.

AU - Słowikowska, A.

AU - Simon, A.

AU - Sonbas, E.

AU - Stojanovic, M.

AU - Szkudlarek, M.

AU - Tsapras, Y.

AU - Vanaverbeke, S.

AU - Wambsganss, J.

AU - Wilson, R. W.

AU - Zola, S.

N1 - Funding: This work is supported by Polish NCN grants: Daina No. 2017/27/L/ST9/03221, grants No. S-LL-19-2 and No. S-MIP-23-89 of the Research Council of Lithuania, Harmonia No. 2018/30/M/ST9/00311, Preludium No. 2017/25/N/ST9/01253, Opus No. 2017/25/B/ST9/02805 and MNiSW grant DIR/WK/2018/12. This project used data obtained via BHTOM (https://bhtom.space), which has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreements No. 730890 (OPTICON) and 101004719 (ORP) and Horizon Europe programme No. 101131928 (ACME). T.G. was supported by the Scientific Research Projects Coordination Unit of Istanbul University, project number: FBG-2017-23943 and the Turkish Republic, Presidency of Strategy and Budget project, project number: 2016K121370. G. Damljanović and M. Stojanović acknowledge support by the Astronomical station Vidojevica, funding from the Ministry of Science, Technological Development and Innovation of the Republic of Serbia (contract No. 451-03-66/2024-03/200002), by the EC through project BELISSIMA (call FP7-REGPOT-2010-5, No. 256772), the observing and financial grant support from the Institute of Astronomy and Rozhen NAO BAS through the bilateral SANU-BAN joint research project "GAIA astrometry and fast variable astronomical objects", and support by the SANU project F-187. YT acknowledges the support of the DFG priority program SPP 1992 “Exploring the Diversity of Extrasolar Planets” (TS 356/3-1). Josep Manel Carrasco was (partially) supported by the Spanish MICIN/AEI/10.13039/501100011033 and by "ERDF A way of making Europe by the European Union” through grant PID2021-122842OB-C2P1, and the Institute of Cosmos Sciences University of Barcelona (ICCUB, Unidad de Excelencia "María de Maeztu") through grant CEX2019-000918-M. Nawapon Nakharutai acknowledges the support of Chiang Mai University. AF is supported by JSPS KAKENHI Grant Number JP17H02871. RFJ acknowledges funding by ANID’s Millennium Science Initiative through grant ICN12_009, awarded to the Millennium Institute of Astrophysics (MAS), and by ANID’s Basal project FB210003. Adam Popowicz was financed by grants 02/140/RGJ24/0031 and BK-250/RAu-11/2024.

PY - 2024/11/9

Y1 - 2024/11/9

N2 - We present the results of our analysis of Gaia19dke, an extraordinary microlensing event in the Cygnus constellation that the Gaia satellite discovered. This event featured a strong microlensing parallax effect, resulting in multiple light curve peaks. We conducted extensive photometric, spectroscopic, and high-resolution imaging follow-up observations to determine the mass and nature of the invisible lensing object. Using the Milky Way priors on the density and proper motion of lenses, we found that the lens is likely to be located at a distance of DL=3.3+2.1-1.7 kpc, and has a mass of ML=0.50+0.82-0.27 M☉. Based on its low luminosity and mass, we propose that the lens in the Gaia19dke event is either a main sequence star or an isolated white dwarf. Due to its brightness, longevity, and lack of blending, Gaia19dke is a target for which the forthcoming Gaia Data Release 4 data will help to constrain the parameters of the lens.

AB - We present the results of our analysis of Gaia19dke, an extraordinary microlensing event in the Cygnus constellation that the Gaia satellite discovered. This event featured a strong microlensing parallax effect, resulting in multiple light curve peaks. We conducted extensive photometric, spectroscopic, and high-resolution imaging follow-up observations to determine the mass and nature of the invisible lensing object. Using the Milky Way priors on the density and proper motion of lenses, we found that the lens is likely to be located at a distance of DL=3.3+2.1-1.7 kpc, and has a mass of ML=0.50+0.82-0.27 M☉. Based on its low luminosity and mass, we propose that the lens in the Gaia19dke event is either a main sequence star or an isolated white dwarf. Due to its brightness, longevity, and lack of blending, Gaia19dke is a target for which the forthcoming Gaia Data Release 4 data will help to constrain the parameters of the lens.

KW - Gravitational lensing: micro

KW - Stars: fundamental parameters

KW - White dwarfs

UR - https://arxiv.org/abs/2309.03324

UR - https://www.scopus.com/pages/publications/85212611712

U2 - 10.32023/0001-5237/74.2.1

DO - 10.32023/0001-5237/74.2.1

M3 - Article

SN - 0001-5237

VL - 74

SP - 77

EP - 111

JO - Acta Astronomica

JF - Acta Astronomica

IS - 2

ER -

Lens mass estimate in the galactic disk extreme parallax microlensing event Gaia19dke

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