Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:
Departamento Gestión de Conocimiento, Monitoreo y Prospección
Consultas o comentarios: productividad@anid.cl
Consultas o comentarios: productividad@anid.cl
Spitzer plus VLTI-GRAVITY Measure the Lens Mass of a Nearby Microlensing Event
| Indexado |
|
||||
| DOI | 10.3847/1538-4357/AB9749 | ||||
| Año | 2020 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
We report the lens mass and distance measurements of the nearby microlensing event TCP J05074264+2447555 (Kojima-1). We measure the microlens parallax vector pi(E) using Spitzer and ground-based light curves with constraints on the direction of lens-source relative proper motion derived from Very Large Telescope Interferometer (VLTI) GRAVITY observations. Combining this pi(E) determination with the angular Einstein radius theta(E) measured by VLTI-GRAVITY observations, we find that the lens is a star with mass M-L = 0.495 +/- 0.063 M-circle dot at a distance D-L = 429 +/- 21 pc. We find that the blended light basically all comes from the lens. The lens-source proper motion is mu(rel, hel) = 26.55 +/- 0.36 mas yr(-1), so with currently available adaptive-optics instruments, the lens and source can be resolved in 2021. This is the first microlensing event whose lens mass is unambiguously measured by interferometry + satellite-parallax observations, which opens a new window for mass measurements of isolated objects such as stellar-mass black holes.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Zang, Weicheng | - |
Tsinghua Univ - China
Tsinghua University - China |
| 2 | Dong, Subo | - |
Peking Univ - China
Peking University - China |
| 3 | Gould, Andrew | - |
Max Planck Institute for Astronomy - Alemania
The Ohio State University - Estados Unidos Max Planck Inst Astron - Alemania |
| 4 | Novati, Sebastiano Calchi | Hombre |
CALTECH - Estados Unidos
Infrared Processing & Analysis Center - Estados Unidos |
| 5 | Chen, P. | - |
Peking Univ - China
Peking University - China |
| 6 | Yang, Hongjing | - |
Tsinghua Univ - China
Tsinghua University - China |
| 7 | Li, Shun-Sheng | - |
CASSACA - China
Univ Chinese Acad Sci - China National Astronomical Observatories Chinese Academy of Sciences - China University of Chinese Academy of Sciences - China |
| 8 | Mao, Shude | - |
Tsinghua Univ - China
CASSACA - China Tsinghua University - China National Astronomical Observatories Chinese Academy of Sciences - China |
| 9 | Alton, K. B. | - |
Desert Blooms Observ - Chile
Desert Blooms Observatory - Chile |
| 10 | Brimacombe, J. | Hombre |
Coral Towers Observ - Australia
Coral Towers Observatory - Australia |
| 11 | Carey, Sean | Hombre |
CALTECH - Estados Unidos
Spitzer Science Center - Estados Unidos |
| 12 | Christie, G. W. | - |
Auckland Observ - Nueva Zelanda
Stardome Observatory, Auckland - Nueva Zelanda |
| 13 | Delplancke-Strobele, F. | - |
ESO - Alemania
Observatorio Europeo Austral - Alemania European Southern Observ - Alemania |
| 14 | Feliz, Dax | Hombre |
Vanderbilt Univ - Estados Unidos
Vanderbilt University - Estados Unidos |
| 15 | Gaudi, B. Scott | - |
OHIO STATE UNIV - Estados Unidos
The Ohio State University - Estados Unidos |
| 16 | Green, J. | - |
Kumeu Observ - Nueva Zelanda
Kumeu Observatory - Nueva Zelanda |
| 17 | Hu, Shao-Ming | - |
Shandong Univ - China
Shandong University, Weihai - China |
| 18 | Jayasinghe, T. | - |
OHIO STATE UNIV - Estados Unidos
The Ohio State University - Estados Unidos |
| 19 | Koff, R. A. | - |
Antelope Hills Observ - Estados Unidos
Antelope Hills Observatory - Estados Unidos |
| 20 | Kurtenkov, Alexander | Hombre |
Bulgarian Acad Sci - Bulgaria
Bulgarian Academy of Sciences - Bulgaria The Bulgarian Academy of Sciences - Bulgaria |
| 21 | Merand, Antoine | Hombre |
ESO - Alemania
Observatorio Europeo Austral - Alemania European Southern Observ - Alemania |
| 22 | Minev, M. | Hombre |
Univ Sofia - Bulgaria
Sofia University St. Kliment Ohridski - Bulgaria Bulgarian Academy of Sciences - Bulgaria University of Iowa - Bulgaria |
| 23 | Mutel, Robert | Hombre |
UNIV IOWA - Estados Unidos
University of Iowa - Estados Unidos |
| 24 | Natusch, T. | - |
AUT Univ - Nueva Zelanda
Auckland University of Technology - Nueva Zelanda |
| 24 | Gould, Andrew | Hombre |
Max Planck Inst Astron - Alemania
OHIO STATE UNIV - Estados Unidos Max Planck Institute for Astronomy - Alemania The Ohio State University - Estados Unidos |
| 25 | Roth, Tyler | Hombre |
UNIV IOWA - Estados Unidos
University of Iowa - Estados Unidos |
| 26 | Shvartzvald, Yossi | Hombre |
Weizmann Inst Sci - Israel
Weizmann Institute of Science Israel - Israel |
| 27 | Espada, Daniel | Hombre |
UNIV ARIZONA - Estados Unidos
The University of Arizona - Estados Unidos |
| 28 | Vanmunster, T. | - |
Ctr Backyard Astrophys Belgium - Bélgica
Center for Backyard Astrophysics Belgium - Bélgica |
| 29 | Zhu, Wei | - |
UNIV TORONTO - Canadá
Canadian Institute for Theoretical Astrophysics - Canadá L’Institut Canadien d’Astrophysique Théorique - Canadá |
| Fuente |
|---|
| National Natural Science Foundation of China |
| National science foundation of China |
| National Key R&D Program of China |
| Natural Science Foundation of Shandong Province |
| NASA |
| Seventh Framework Programme |
| Young Scholars Program of Shandong University |
| National Science Foundation of China (NSFC) |
| JPL grant |
| Beatrice and Vincent Tremaine Fellowship at CITA |
| NASA through JPL/Caltech |
| European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC |
| Agradecimiento |
|---|
| We thank Tianshu Wang, Jennifer Yee, Akihiko Fukui, and Naoki Koshimoto for fruitful discussions. We are grateful to Robin Leadbeater and Paolo Berardi for making their spectroscopic observations available to us during the observing campaign. S.D. and P.C. are supported by the National Key R&D Program of China No. 2019YFA0405100 and Projects 11573003 supported by the National Science Foundation of China (NSFC). W.Z., H.Y., S.-S.L., and S.M. acknowledge support by the National Science Foundation of China (grant No. 11821303 and 11761131004). Work by AG was supported by AST-1516842 and by JPL grant 1500811. A.G. received support from the European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC grant Agreement No. [321035]. This work is based (in part) on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech. Work by S.M.Hu. was supported by the Natural Science Foundation of Shandong province (No. JQ201702), and the Young Scholars Program of Shandong University (No. 20820162003). W.Z. was supported by the Beatrice and Vincent Tremaine Fellowship at CITA. |
| 2020-07-01 2020-07-16 13:43:10 cgi/release: Article released bin/incoming: New from .zip National Science Foundation of China (NSFC) 11573003 National Science Foundation of China (NSFC) 11821303 National Science Foundation of China (NSFC) 11761131004 the European Research Council 321035 Natural Science Foundation of Shandong Province JQ201702 Young Scholars Program of Shandong University 20820162003 National Key R&D program of China 2019YFA0405100 yes |
