Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge

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Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge. / Zang, Weicheng; Shvartzvald, Yossi; Wang, Tianshu; Udalski, Andrzej; Lee, Chung-Uk; Sumi, Takahiro; Skottfelt, Jesper; Li, Shun-Sheng; Mao, Shude; Zhu, Wei; Yee, Jennifer C.; Novati, Sebastiano Calchi; Beichman, Charles A.; Bryden, Geoffery; Carey, Sean; Gaudi, B. Scott; Henderson, Calen B.; Mroz, Przemek; Skowron, Jan; Poleski, Radoslaw; Szymanski, Michal K.; Soszynski, Igor; Pietrukowicz, Pawel; Kozowski, Szymon; Ulaczyk, Krzysztof; Rybicki, Krzysztof A.; Iwanek, Patryk; Bachelet, Etienne; Christie, Grant; Green, Jonathan; Hennerley, Steve; Maoz, Dan; Natusch, Tim; Pogge, Richard W.; Street, Rachel A.; Tsapras, Yiannis; Albrow, Michael D.; Chung, Sun-Ju; Gould, Andrew; Han, Cheongho; Hwang, Kyu-Ha; Jung, Youn Kil; Ryu, Yoon-Hyun; Shin, In-Gu; Cha, Sang-Mok; Kim, Dong-Jin; Kim, Hyoun-Woo; Kim, Seung-Lee; Lee, Dong-Joo; Jorgensen, Uffe G.; Spitzer Team; OGLE Collaboration; LCO Follow-Up Team; FUN Follow-Up Team; KMTNet Collaboration; MOA Collaboration; MiNDSTEp Collaboration.

I: Astrophysical Journal, Bind 891, Nr. 1, 3, 01.03.2020.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Zang, W, Shvartzvald, Y, Wang, T, Udalski, A, Lee, C-U, Sumi, T, Skottfelt, J, Li, S-S, Mao, S, Zhu, W, Yee, JC, Novati, SC, Beichman, CA, Bryden, G, Carey, S, Gaudi, BS, Henderson, CB, Mroz, P, Skowron, J, Poleski, R, Szymanski, MK, Soszynski, I, Pietrukowicz, P, Kozowski, S, Ulaczyk, K, Rybicki, KA, Iwanek, P, Bachelet, E, Christie, G, Green, J, Hennerley, S, Maoz, D, Natusch, T, Pogge, RW, Street, RA, Tsapras, Y, Albrow, MD, Chung, S-J, Gould, A, Han, C, Hwang, K-H, Jung, YK, Ryu, Y-H, Shin, I-G, Cha, S-M, Kim, D-J, Kim, H-W, Kim, S-L, Lee, D-J, Jorgensen, UG, Spitzer Team, OGLE Collaboration, LCO Follow-Up Team, FUN Follow-Up Team, KMTNet Collaboration, MOA Collaboration & MiNDSTEp Collaboration 2020, 'Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge', Astrophysical Journal, bind 891, nr. 1, 3. https://doi.org/10.3847/1538-4357/ab6ff8

APA

Zang, W., Shvartzvald, Y., Wang, T., Udalski, A., Lee, C-U., Sumi, T., Skottfelt, J., Li, S-S., Mao, S., Zhu, W., Yee, J. C., Novati, S. C., Beichman, C. A., Bryden, G., Carey, S., Gaudi, B. S., Henderson, C. B., Mroz, P., Skowron, J., ... MiNDSTEp Collaboration (2020). Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge. Astrophysical Journal, 891(1), [3]. https://doi.org/10.3847/1538-4357/ab6ff8

Vancouver

Zang W, Shvartzvald Y, Wang T, Udalski A, Lee C-U, Sumi T o.a. Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge. Astrophysical Journal. 2020 mar. 1;891(1). 3. https://doi.org/10.3847/1538-4357/ab6ff8

Author

Zang, Weicheng ; Shvartzvald, Yossi ; Wang, Tianshu ; Udalski, Andrzej ; Lee, Chung-Uk ; Sumi, Takahiro ; Skottfelt, Jesper ; Li, Shun-Sheng ; Mao, Shude ; Zhu, Wei ; Yee, Jennifer C. ; Novati, Sebastiano Calchi ; Beichman, Charles A. ; Bryden, Geoffery ; Carey, Sean ; Gaudi, B. Scott ; Henderson, Calen B. ; Mroz, Przemek ; Skowron, Jan ; Poleski, Radoslaw ; Szymanski, Michal K. ; Soszynski, Igor ; Pietrukowicz, Pawel ; Kozowski, Szymon ; Ulaczyk, Krzysztof ; Rybicki, Krzysztof A. ; Iwanek, Patryk ; Bachelet, Etienne ; Christie, Grant ; Green, Jonathan ; Hennerley, Steve ; Maoz, Dan ; Natusch, Tim ; Pogge, Richard W. ; Street, Rachel A. ; Tsapras, Yiannis ; Albrow, Michael D. ; Chung, Sun-Ju ; Gould, Andrew ; Han, Cheongho ; Hwang, Kyu-Ha ; Jung, Youn Kil ; Ryu, Yoon-Hyun ; Shin, In-Gu ; Cha, Sang-Mok ; Kim, Dong-Jin ; Kim, Hyoun-Woo ; Kim, Seung-Lee ; Lee, Dong-Joo ; Jorgensen, Uffe G. ; Spitzer Team ; OGLE Collaboration ; LCO Follow-Up Team ; FUN Follow-Up Team ; KMTNet Collaboration ; MOA Collaboration ; MiNDSTEp Collaboration. / Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge. I: Astrophysical Journal. 2020 ; Bind 891, Nr. 1.

Bibtex

@article{0e8a8ea53e7849bda16aa30cec1b2205,
title = "Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge",
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 +/- 0.03 M-circle dot star with D-LS = 0.53 +/- 0.11 kpc, where D-LS 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-circle dot star with D-LS = 0.40 +/- 0.12 kpc or a 0.38(-0.12)(+0.13) M-circle dot star with D-LS = 0.53 +/- 0.19 kpc. 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 = "MASS, PHOTOMETRY, STELLAR, EVENTS, SYSTEMS, SEARCH, SIZES",
author = "Weicheng Zang and Yossi Shvartzvald and Tianshu Wang and Andrzej Udalski and Chung-Uk Lee and Takahiro Sumi and Jesper Skottfelt and Shun-Sheng Li and Shude Mao and Wei Zhu and Yee, {Jennifer C.} and Novati, {Sebastiano Calchi} and Beichman, {Charles A.} and Geoffery Bryden and Sean Carey and Gaudi, {B. Scott} and Henderson, {Calen B.} and Przemek Mroz and Jan Skowron and Radoslaw Poleski and Szymanski, {Michal K.} and Igor Soszynski and Pawel Pietrukowicz and Szymon Kozowski and Krzysztof Ulaczyk and Rybicki, {Krzysztof A.} and Patryk Iwanek and Etienne Bachelet and Grant Christie and Jonathan Green and Steve Hennerley and Dan Maoz and Tim Natusch and Pogge, {Richard W.} and Street, {Rachel A.} and Yiannis Tsapras and Albrow, {Michael D.} and Sun-Ju Chung and Andrew Gould and Cheongho Han and Kyu-Ha Hwang and Jung, {Youn Kil} and Yoon-Hyun Ryu and In-Gu Shin and Sang-Mok Cha and Dong-Jin Kim and Hyoun-Woo Kim and Seung-Lee Kim and Dong-Joo Lee and Jorgensen, {Uffe G.} and {Spitzer Team} and {OGLE Collaboration} and {LCO Follow-Up Team} and {FUN Follow-Up Team} and {KMTNet Collaboration} and {MOA Collaboration} and {MiNDSTEp Collaboration}",
year = "2020",
month = mar,
day = "1",
doi = "10.3847/1538-4357/ab6ff8",
language = "English",
volume = "891",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",
number = "1",

}

RIS

TY - JOUR

T1 - Spitzer Microlensing Parallax Reveals Two Isolated Stars in the Galactic Bulge

AU - Zang, Weicheng

AU - Shvartzvald, Yossi

AU - Wang, Tianshu

AU - Udalski, Andrzej

AU - Lee, Chung-Uk

AU - Sumi, Takahiro

AU - Skottfelt, Jesper

AU - Li, Shun-Sheng

AU - Mao, Shude

AU - Zhu, Wei

AU - Yee, Jennifer C.

AU - Novati, Sebastiano Calchi

AU - Beichman, Charles A.

AU - Bryden, Geoffery

AU - Carey, Sean

AU - Gaudi, B. Scott

AU - Henderson, Calen B.

AU - Mroz, Przemek

AU - Skowron, Jan

AU - Poleski, Radoslaw

AU - Szymanski, Michal K.

AU - Soszynski, Igor

AU - Pietrukowicz, Pawel

AU - Kozowski, Szymon

AU - Ulaczyk, Krzysztof

AU - Rybicki, Krzysztof A.

AU - Iwanek, Patryk

AU - Bachelet, Etienne

AU - Christie, Grant

AU - Green, Jonathan

AU - Hennerley, Steve

AU - Maoz, Dan

AU - Natusch, Tim

AU - Pogge, Richard W.

AU - Street, Rachel A.

AU - Tsapras, Yiannis

AU - Albrow, Michael D.

AU - Chung, Sun-Ju

AU - Gould, Andrew

AU - Han, Cheongho

AU - Hwang, Kyu-Ha

AU - Jung, Youn Kil

AU - Ryu, Yoon-Hyun

AU - Shin, In-Gu

AU - Cha, Sang-Mok

AU - Kim, Dong-Jin

AU - Kim, Hyoun-Woo

AU - Kim, Seung-Lee

AU - Lee, Dong-Joo

AU - Jorgensen, Uffe G.

AU - Spitzer Team

AU - OGLE Collaboration

AU - LCO Follow-Up Team

AU - FUN Follow-Up Team

AU - KMTNet Collaboration

AU - MOA Collaboration

AU - MiNDSTEp Collaboration

PY - 2020/3/1

Y1 - 2020/3/1

N2 - 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 +/- 0.03 M-circle dot star with D-LS = 0.53 +/- 0.11 kpc, where D-LS 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-circle dot star with D-LS = 0.40 +/- 0.12 kpc or a 0.38(-0.12)(+0.13) M-circle dot star with D-LS = 0.53 +/- 0.19 kpc. 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.

AB - 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 +/- 0.03 M-circle dot star with D-LS = 0.53 +/- 0.11 kpc, where D-LS 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-circle dot star with D-LS = 0.40 +/- 0.12 kpc or a 0.38(-0.12)(+0.13) M-circle dot star with D-LS = 0.53 +/- 0.19 kpc. 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.

KW - MASS

KW - PHOTOMETRY

KW - STELLAR

KW - EVENTS

KW - SYSTEMS

KW - SEARCH

KW - SIZES

U2 - 10.3847/1538-4357/ab6ff8

DO - 10.3847/1538-4357/ab6ff8

M3 - Journal article

VL - 891

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 3

ER -

ID: 247168279