Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Hosek Jr, M."'
Autor:
Schoedel, R., Nogueras-Lara, F., Hosek Jr, M., Do, T., Lu, J., Arranz, A. Martínez, Ghez, A., Rich, R. M., Gardini, A., Gallego-Cano, E., Cano-González, M., Gallego-Calvente, A. T.
Publikováno v:
A&A 672, L8 (2023)
Until recently it was thought that the nuclear stellar disc at the centre of our Galaxy was formed via quasi-continuous star formation over billions of years. However, an analysis of GALACTICNUCLEUS survey data indicates that >80% of the mass of the
Externí odkaz:
http://arxiv.org/abs/2304.01791
Autor:
Jia, Siyao, Xu, Ningyuan, Lu, Jessica R., Chu, D. S, O'Neil, K. Kosmo, Drechsler, W. B., Hosek Jr., M. W., Sakai, S., Do, T., Ciurlo, A., Gautam, A. K., Ghez, A. M., Becklin, E., Morris, M. R., Bentley, R. O.
We measure the 3D kinematic structures of the young stars within the central 0.5 parsec of our Galactic Center using the 10 m telescopes of the W.~M.~Keck Observatory over a time span of 25 years. Using high-precision measurements of positions on the
Externí odkaz:
http://arxiv.org/abs/2302.02040
We present SPISEA (Stellar Population Interface for Stellar Evolution and Atmospheres), an open-source Python package that simulates simple stellar populations. The strength of SPISEA is its modular interface which offers the user control of 13 input
Externí odkaz:
http://arxiv.org/abs/2006.06691
Autor:
Chen, Zhuo, Gallego-Cano, E., Do, T., Witzel, G., Ghez, A. M., Schödel, R., Sitarski, B. N., Becklin, E. E., Lu, J., Morris, M. R., Dehghanfar, A., Gautam, A. K., Hees, A., Hosek Jr, M. W., Jia, S., Mangian, A. C., Matthews, K.
We report new infrared measurements of the supermassive black hole at the Galactic Center, Sgr A*, over a decade that was previously inaccessible at these wavelengths. This enables a variability study that addresses variability timescales that are te
Externí odkaz:
http://arxiv.org/abs/1908.08066
Autor:
Hosek Jr., M. W., Lu, J. R., Andersen, M., Do, T., Kim, D., Rui, N. Z., Boyle, P., Williams, B. F., Chakrabarti, S., Beaton, R. L.
The stellar initial mass function (IMF) is a fundamental property of star formation, offering key insight into the physics driving the process as well as informing our understanding of stellar populations, their by-products, and their impact on the s
Externí odkaz:
http://arxiv.org/abs/1903.05107
Autor:
Jia, Siyao, Lu, Jessica R., Sakai, S ., Gautam, A. K., Do, T., Hosek Jr., M. W., Service, M., Ghez, A. M., Gallego-Cano, E., Schodel, R., Hees, Aurelien, Morris, M. R., Becklin, E., Matthews, K.
We present improved relative astrometry for stars within the central half parsec of our Galactic Center based on data obtained with the 10 m W. M. Keck Observatory from 1995 to 2017. The new methods used to improve the astrometric precision and accur
Externí odkaz:
http://arxiv.org/abs/1902.02491
Autor:
Sakai, Shoko, Lu, Jessica R., Ghez, Andrea, Jia, Siyao, Do, Tuan, Witzel, Gunther, Gautam, Abhimat K., Hees, Aurelien, Becklin, E., Matthews, K., Hosek Jr, M. W.
Precision measurements of the stars in short-period orbits around the supermassive black hole at the Galactic Center are now being used to constrain general relativistic effects, such as the gravitational redshift and periapse precession. One of the
Externí odkaz:
http://arxiv.org/abs/1901.08685
Autor:
Hosek Jr., M. W., Lu, J. R., Anderson, J., Najarro, F., Ghez, A. M., Morris, M. R., Clarkson, W. I., Albers, S. M.
As a young massive cluster in the Central Molecular Zone, the Arches cluster is a valuable probe of the stellar Initial Mass Function (IMF) in the extreme Galactic Center environment. We use multi-epoch Hubble Space Telescope observations to obtain h
Externí odkaz:
http://arxiv.org/abs/1808.02577
Autor:
Hosek Jr, M. W., Lu, J. R., Anderson, J., Do, T., Schlafly, E. F., Ghez, A. M., Clarkson, W. I., Morris, M. R., Albers, S. M.
A precise extinction law is a critical input when interpreting observations of highly reddened sources such as young star clusters and the Galactic Center (GC). We use Hubble Space Telescope observations of a region of moderate extinction and a regio
Externí odkaz:
http://arxiv.org/abs/1801.08574
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