Zobrazeno 1 - 10
of 37
pro vyhledávání: '"YELDA, SYLVANA"'
Autor:
Witzel, Gunther, Sitarski, Breann. N., Ghez, Andrea M., Morris, Mark R., Hees, Aurelien, Do, Tuan, Lu, Jessica R., Naoz, Smadar, Boehle, Anna, Martinez, Greg, Chappell, Samantha, Schödel, Rainer, Meyer, Leo, Yelda, Sylvana, Becklin, Ereic E., Matthews, Keith
We present new Adaptive Optics (AO) imaging and spectroscopic measurements of Galactic Center source G1 from W. M. Keck Observatory. Our goal is to understand its nature and relationship to G2, which is the first example of a spatially-resolved objec
Externí odkaz:
http://arxiv.org/abs/1707.02301
Autor:
Chappell, Samantha N., Ghez, Andrea M., Do, Tuan, Martinez, Gregory D., Yelda, Sylvana, Sitarski, Breann N., Lu, Jessica R., Morris, Mark R.
The late-type stellar population in the Galactic Center was first predicted to reside in a dynamically relaxed cusp (power law slope ranging from 3/2 to 7/4). However, observations - which rely on models to correct for projection effects - have sugge
Externí odkaz:
http://arxiv.org/abs/1610.02437
We present new near-infrared spectroscopic observations of the outer edges of the young stellar cluster around the supermassive black hole at the Galactic center. The observations show a break in the surface-density profile of young stars at approxim
Externí odkaz:
http://arxiv.org/abs/1504.07239
Autor:
Witzel, Gunther, Ghez, Andrea M., Morris, Mark R., Sitarski, Breann N., Boehle, Anna, Naoz, Smadar, Campbell, Randall, Becklin, Eric E., Canalizo, Gabriela, Chappell, Samantha, Do, Tuan, Lu, Jessica R., Matthews, Keith, Meyer, Leo, Stockton, Alan, Wizinowich, Peter, Yelda, Sylvana
We report new observations of the Galactic Center source G2 from the W. M. Keck Observatory. G2 is a dusty red object associated with gas that shows tidal interactions as it nears closest approach with the Galaxy's central black hole. Our observation
Externí odkaz:
http://arxiv.org/abs/1410.1884
Autor:
Yelda, Sylvana, Ghez, Andrea M., Lu, Jessica R., Do, Tuan, Meyer, Leo, Morris, Mark R., Matthews, Keith
We present new kinematic measurements and modeling of a sample of 116 young stars in the central parsec of the Galaxy in order to investigate the properties of the young stellar disk. The measurements were derived from a combination of speckle and la
Externí odkaz:
http://arxiv.org/abs/1401.7354
We report on the expected astrometric performance of the Thirty Meter Telescope's InfraRed Imaging Spectrometer (IRIS) as determined using simulated images of the Galactic center. This region of the Galaxy harbors a supermassive black hole and a dens
Externí odkaz:
http://arxiv.org/abs/1310.5744
The supermassive black hole at the center of the Milky Way plays host to a massive, young cluster that may have formed in one of the most inhospitable environments in the Galaxy. We present new measurements of the global properties of this cluster, i
Externí odkaz:
http://arxiv.org/abs/1301.0540
Autor:
Do, Tuan, Lu, Jessica R., Ghez, Andrea M., Morris, Mark R., Yelda, Sylvana, Martinez, Gregory D., Wright, Shelley A., Matthews, Keith
We present new high angular resolution near-infrared spectroscopic observations of the nuclear star cluster surrounding the Milky Way's central supermassive black hole. Using the integral-field spectrograph OSIRIS on Keck II behind the laser-guide-st
Externí odkaz:
http://arxiv.org/abs/1301.0539
Autor:
Clarkson, Will, Ghez, Andrea, Morris, Mark, Lu, Jessica, Stolte, Andrea, McCrady, Nate, Do, Tuan, Yelda, Sylvana
We report the first detection of the intrinsic velocity dispersion of the Arches cluster - a young (~2 Myr), massive (~10,000 Solar Mass) starburst cluster located near the Galactic center. This was accomplished using proper motion measurements withi
Externí odkaz:
http://arxiv.org/abs/1112.5458
Autor:
Ammons, S. Mark, Severson, Scott, Armstrong, J. D., Crossfield, Ian, Do, Tuan, Fitzgerald, Mike, Harrington, David, Hickenbotham, Adam, Hunter, Jennifer, Johnson, Jess, Johnson, Luke, Li, Kaccie, Lu, Jessica, Maness, Holly, Morzinski, Katie, Norton, Andrew, Putnam, Nicole, Roorda, Austin, Rossi, Ethan, Yelda, Sylvana
Adaptive Optics (AO) is a new and rapidly expanding field of instrumentation, yet astronomers, vision scientists, and general AO practitioners are largely unfamiliar with the root technologies crucial to AO systems. The AO Summer School (AOSS), spons
Externí odkaz:
http://arxiv.org/abs/1111.2015