Zobrazeno 1 - 10
of 421
pro vyhledávání: '"E. Becklin"'
Autor:
Siyao Jia, Ningyuan Xu, Jessica R. Lu, D. S. Chu, K. Kosmo O’Neil, W. B. Drechsler, M. W. Hosek Jr., S. Sakai, T. Do, A. Ciurlo, A. K. Gautam, A. M. Ghez, E. Becklin, M. R. Morris, R. O. Bentley
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 1, p 18 (2023)
We measure the 3D kinematic structures of the young stars within the central 0.5 pc of our Galactic Center using the 10 m telescopes of the W. M. Keck Observatory over a time span of 25 yr. Using high-precision measurements of positions on the sky an
Externí odkaz:
https://doaj.org/article/a0e42b7dec214243a422826ae716123f
Autor:
Hadrien Paugnat, Tuan Do, Abhimat K. Gautam, Gregory D. Martinez, Andrea M. Ghez, Shoko Sakai, Grant C. Weldon, Matthew W. Hosek Jr., Zoë Haggard, Kelly Kosmo O’Neil, Eric E. Becklin, Gunther Witzel, Jessica R. Lu, Keith Matthews
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 2, p 228 (2024)
In this work, we measure the spectral index of Sagittarius A* (Sgr A*) between the H (1.6 μ m) and $K^{\prime} $ (2.2 μ m) broadband filters in the near-infrared (NIR), sampling over a factor ∼40 in brightness, the largest range probed to date by
Externí odkaz:
https://doaj.org/article/f4a053e8546746fbbe66085c7dc7e5ea
Autor:
Bock, J. J., Neugebauer, G., Matthews, K., Soifer, B. T., Ressler, E. E. Becklin M., Marsh, K., Werner, M. W., Egami, E., Blandford, R. D.
Publikováno v:
Astron.J. 120 (2000) 2904
Mid-infrared observations of the central source of NGC 1068 have been obtained with a spatial resolution in the deconvolved image of 0.1" (~ 7pc). The central source is extended by ~1" in the north-south direction but appears unresolved in the east-w
Externí odkaz:
http://arxiv.org/abs/astro-ph/0009078
Autor:
Devin S. Chu, Tuan Do, Andrea Ghez, Abhimat K. Gautam, Anna Ciurlo, Kelly Kosmo O’neil, Matthew W. Hosek, Aurélien Hees, Smadar Naoz, Shoko Sakai, Jessica R. Lu, Zhuo Chen, Rory O. Bentley, Eric E. Becklin, Keith Matthews
We present the results of the first systematic search for spectroscopic binaries within the central 2 x 3 arcsec$^2$ around the supermassive black hole at the center of the Milky Way galaxy. This survey is based primarily on over a decade of adaptive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee4f1c176b691162e815a4c3f6952859
http://arxiv.org/abs/2303.16977
http://arxiv.org/abs/2303.16977
Autor:
Anna Ciurlo, Randall D. Campbell, Mark R. Morris, Tuan Do, Andrea M. Ghez, Eric E. Becklin, Rory O. Bentley, Devin S. Chu, Abhimat K. Gautam, Yash A. Gursahani, Aurélien Hees, Kelly Kosmo O’Neil, Jessica R. Lu, Gregory D. Martinez, Smadar Naoz, Shoko Sakai, Rainer Schödel
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the origina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cc8e0ed31d12406ff5bafb27fc65127
Autor:
Jessica R. Lu, Emily Ramey, Matthew W. Hosek, Mark Morris, Abhimat K. Gautam, Keith Matthews, Siyao Jia, Shoko Sakai, Sam Ragland, Tuan Do, Eric E. Becklin, Andrea M. Ghez, Ruoyi Yin, Peter Wizinowich, Steve Robinson, James E. Lyke
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems. 8
We present an analysis of the long-term performance of the W. M. Keck observatory laser guide star adaptive optics (LGS-AO) system and explore factors that influence the overall AO performance most strongly. Astronomical surveys can take years or dec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::337647b112e27590395308ae951ac544
https://doi.org/10.1117/1.jatis.8.2.028004
https://doi.org/10.1117/1.jatis.8.2.028004
Autor:
H. Boyce, D. Haggard, G. Witzel, S. von Fellenberg, S. P. Willner, E. E. Becklin, T. Do, A. Eckart, G. G. Fazio, M. A. Gurwell, J. L. Hora, S. Markoff, M. R. Morris, J. Neilsen, M. Nowak, H. A. Smith, S. Zhang
Publikováno v:
Astrophysical Journal, 931:7. IOP Publishing Ltd.
We report a timing analysis of near-infrared (NIR), X-ray, and submillimeter data during a 3 day coordinated campaign observing Sagittarius A*. Data were collected at 4.5 μm with the Spitzer Space Telescope, 2–8 keV with the Chandra X-ray Observat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a46193d2a853a4518e75fc097b9387b7
https://dare.uva.nl/personal/pure/en/publications/multiwavelength-variability-of-sagittarius-a-in-2019-july(4e5b7ae1-d8a8-49f4-a479-eb8a57ae4a67).html
https://dare.uva.nl/personal/pure/en/publications/multiwavelength-variability-of-sagittarius-a-in-2019-july(4e5b7ae1-d8a8-49f4-a479-eb8a57ae4a67).html
Autor:
Bryce A. Babcock, L. Bright, Paul J. Tristram, Stephanie Sallum, C. J. K. Morley, William D. Vacca, Manuel Wiedemann, Stephen E. Levine, P. M. Kilmartin, S. Mathers, K. Leppik, Peter F. Nelson, Chris Johnson, Amanda S. Bosh, Carlos A. Zuluaga, Jay M. Pasachoff, Daisuke Suzuki, Molly R. Kosiarek, Rebecca F. Durst, Ho Chit Siu, Ian S. McLean, Thanawuth Thanathibodee, Trudy Tilleman, Eric E. Becklin, Amanda A. Sickafoose, Sarah E. Logsdon, C. H. Seeger, Edward W. Dunham, M. Savage, Fumio Abe, E. Pfüller, Ryan T. Hamilton, Luke Weisenbach, Tim Natusch, Hugh C. Harris, Chris Stockdale, Haydn Ngan, Elizabeth Widen, Jeffrey Van Cleve, R. Lucas, A. C. Gilmore, Carolle Varughese, Jürgen Wolf, G. W. Christie, Thomas A. Bida
On UT 29 June 2015, the occultation by Pluto of a bright star (r′ = 11.9) was observed from the Stratospheric Observatory for Infrared Astronomy (SOFIA) and several ground-based stations in New Zealand and Australia. Pre-event astrometry allowed fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::900e6238bf563d100064c1f6362e88f7
https://resolver.caltech.edu/CaltechAUTHORS:20191202-094234104
https://resolver.caltech.edu/CaltechAUTHORS:20191202-094234104
Autor:
Howard A. Smith, Rubén Herrero-Illana, Andrea M. Ghez, Nicola Marchili, Tuan Do, Hope Boyce, Mark Gurwell, Mark Morris, Giovanni G. Fazio, Daryl Haggard, Zhiyuan Li, J. A. Zensus, Steven P. Willner, M. Subroweit, Joseph L. Hora, Andreas Eckart, G. Witzel, E. E. Becklin, Gregory D. Martinez, Jun Liu
Sagittarius A* (Sgr A*) is the variable radio, near-infrared (NIR), and X-ray source associated with accretion onto the Galactic center black hole. We have analyzed a comprehensive submillimeter (including new observations simultaneous with NIR monit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c1788398bc669b1188e2aba006b34ee
http://hdl.handle.net/20.500.12386/31788
http://hdl.handle.net/20.500.12386/31788
Autor:
Thiem Hoang, Vilppu Piirola, Eric E. Becklin, B-G Andersson, Miranda Caputo, Dan P. Clemens, John E. Vaillancourt
The optical and near-infrared (OIR) polarization of starlight is typically understood to arise from the dichroic extinction of that light by dust grains whose axes are aligned with respect to a local magnetic-field. The size distribution of the align
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::682c498e95660a3883790c8909c697c0