Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Sitarski, Breann N."'
Autor:
Ciurlo, Anna, Turri, Paolo, Witzel, Gunther, Lu, Jessica R., Do, Tuan, Sitarski, Breann N., Fitzgerald, Michael P., Ghez, Andrea M., Alvarez, Carlos, Terry, Sean K., Doppmann, Greg, Lyke, James E., Ragland, Sam, Campbell, Randall, Matthews, Keith
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 8, Issue 3, 038007 (September 2022)
Images obtained with single-conjugate adaptive optics (AO) show spatial variation of the point spread function (PSF) due to both atmospheric anisoplanatism and instrumental aberrations. The poor knowledge of the PSF across the field of view strongly
Externí odkaz:
http://arxiv.org/abs/2210.10940
Autor:
Haffert, Sebastiaan Y., Close, Laird M., Hedglen, Alexander D., Males, Jared R., Kautz, Maggie, Bouchez, Antonin H., Demers, Richard, Quiros-Pacheco, Fernando, Sitarski, Breann N., Van Gorkom, Kyle, Long, Joseph D., Guyon, Olivier, Schatz, Lauren, Miller, Kelsey, Lumbres, Jennifer, Rodack, Alex, Knight, Justin M.
The next generation of Giant Segmented Mirror Telescopes (GSMT) will have large gaps between the segments either caused by the shadow of the mechanical structure of the secondary mirror (E-ELT and TMT) or intrinsically by design (GMT). These gaps are
Externí odkaz:
http://arxiv.org/abs/2206.03615
Autor:
Hedglen, Alexander D., Close, Laird M., Haffert, Sebastiaan Y., Males, Jared R., Kautz, Maggie, Bouchez, Antonin H., Demers, Richard, Quiros-Pacheco, Fernando, Sitarski, Breann N., Guyon, Olivier, Van Gorkom, Kyle, Long, Joseph D., Lumbres, Jennifer, Schatz, Lauren, Miller, Kelsey, Rodack, Alex, Knight, Justin M.
The Giant Magellan Telescope (GMT) design consists of seven circular 8.4-m diameter mirror segments that are separated by large > 30 cm gaps, creating the possibility of fluctuations in optical path differences due to flexure, segment vibrations, win
Externí odkaz:
http://arxiv.org/abs/2206.03614
Autor:
Ciurlo, Anna, Campbell, Randall D., Morris, Mark R., Do, Tuan, Ghez, Andrea M., Hees, Aurelien, Sitarski, Breann N., O'Neil, Kelly Kosmo, Chu, Devin S., Martinez, Gregory D., Naoz, Smadar, Stephan, Alexander P.
Publikováno v:
Nature volume 577, pages337-340(2020)
The central 0.1 parsecs of the Milky Way host a supermassive black hole identified with the position of the radio and infrared source Sagittarius A*, a cluster of young, massive stars (the S stars) and various gaseous features. Recently, two unusual
Externí odkaz:
http://arxiv.org/abs/2001.08325
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
Autor:
Gautam, Abhimat K., Do, Tuan, Ghez, Andrea M., Lu, Jessica R., Morris, Mark R., Sakai, Shoko, Witzel, Gunther, Sitarski, Breann N., Chappell, Samantha
We present constraints on the variability and binarity of young stars in the central 10 arcseconds (~0.4 pc) of the Milky Way Galactic Center (GC) using Keck Adaptive Optics data over a 12 year baseline. Given our experiment's photometric uncertainti
Externí odkaz:
http://arxiv.org/abs/1610.02441
Autor:
Stephan, Alexander P., Naoz, Smadar, Ghez, Andrea M., Witzel, Gunther, Sitarski, Breann N., Do, Tuan, Kocsis, Bence
Most, if not all, stars in the field are born in binary configurations or higher multiplicity systems. In dense stellar environment such as the Galactic Center (GC), many stars are expected to be in binary configurations as well. These binaries form
Externí odkaz:
http://arxiv.org/abs/1603.02709
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:
Sitarski, Breann N., Morris, Mark R., Lu, Jessica R., Duchêne, Gaspard, Stolte, Andrea, Becklin, E. E., Ghez, Andrea M., Zinnecker, Hans
We have made the first detection of a near-infrared counterpart associated with the disk around Radio Source "I," a massive protostar in the Kleinmann-Low Nebula in Orion using imaging with laser guide star adaptive optics on the Keck II telescope. T
Externí odkaz:
http://arxiv.org/abs/1304.1581