Follow-up LCs of 2 Spitzer microlensing events Virtual Observatory Resource

Authors

1. Zang W.
2. Shvartzvald Y.
3. Wang T.
4. Udalski A.
5. Lee C.-U.
6. Sumi T.,Skottfelt J.
7. Li S.-S.
8. Mao S.
9. Zhu W.
10. Yee J.C.
11. Calchi Novati S.,Beichman C.A.
12. Bryden G.
13. Carey S.
14. Gaudi B.S.
15. Henderson C.B.
16. Mroz P.,Skowron J.
17. Poleski R.
18. Szymanski M.K.
19. Soszynski I.
20. Pietrukowicz P.,Kozlowski S.
21. Ulaczyk K.
22. Rybicki K.A.
23. Iwanek P.
24. Bachelet E.,Christie G.
25. Green J.
26. Hennerley S.
27. Maoz D.
28. Natusch T.
29. Pogge R.W.,Street R.A.
30. Tsapras Y.
31. Albrow M.D.
32. Chung S.-J.
33. Gould A.
34. Han C.,Hwang K.-H.
35. Jung Y.K.
36. Ryu Y.-H.
37. Shin I.-G.
38. Cha S.-M.
39. Kim D.-J.,Kim H.-W.
40. Kim S.-L.
41. Lee D.-J.
42. Lee Y.
43. Park B.-G.
44. Bond I.A.
45. Abe F.,Barry R.
46. Bennett D.P.
47. Bhattacharya A.
48. Donachie M.
49. Fukui A.
50. Hirao Y.,Itow Y.
51. Kondo I.
52. Koshimoto N.
53. Alex Li M.C.
54. Matsubara Y.
55. Muraki Y.,Miyazaki S.
56. Nagakane M.
57. Ranc C.
58. Rattenbury N.J.
59. Suematsu H.,Sullivan D.J.
60. Suzuki D.
61. Tristram P.J.
62. Yonehara A.
63. Dominik M.,Hundertmark M.
64. Jorgensen U.G.
65. Rahvar S.
66. Sajadian S.
67. Snodgrass C.,Bozza V.
68. Burgdorf M.J.
69. Evans D.F.
70. Jaimes R.F.
71. Fujii Y.I.
72. Mancini L.,Longa-Pena P.
73. Helling C.
74. Peixinho N.
75. Rabus M.
76. Southworth J.,Unda-Sanzana E.
77. von Essen C.

Published by

CDS

Abstract

We report the mass and distance measurements of two single-lens events from the 2017 Spitzer microlensing campaign. The ground-based observations yield the detection of finite-source effects, and the microlens parallaxes are derived from the joint analysis of ground-based observations and Spitzer observations. We find that the lens of OGLE-2017-BLG-1254 is a 0.60+/-0.03M_{sun}_ star with DLS=0.53+/-0.11kpc, where DLS is the distance between the lens and the source. The second event, OGLE-2017-BLG-1161, is subject to the known satellite parallax degeneracy, and thus is either a 0.51_-0.10_^+0.12^M_{sun}_ star with DLS=0.40+/-0.12kpc or a 0.38_-0.12_^+0.13^M_{sun} star with DLS=0.53+/-0.19kpc. Both of the lenses are therefore isolated stars in the Galactic bulge. By comparing the mass and distance distributions of the eight published Spitzer finite- source events with the expectations from a Galactic model, we find that the Spitzer sample is in agreement with the probability of finite-source effects occurring in single-lens events.

Keywords

1. gravitational-lensing
2. infrared-photometry
3. visible-astronomy
4. photometry

Bibliographic source Bibcode

2020ApJ...891....3Z

See also HTML

https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/891/3

IVOA Identifier IVOID

ivo://CDS.VizieR/J/ApJ/891/3

Document Object Identifer DOI

doi:10.26093/cds/vizier.18910003

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https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/891/3
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/891/3
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/891/3

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