Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Sitarski, Breann"'
Autor:
Rau, Gioia, Carpenter, Kenneth G., Boyajian, Tabetha, Creech-Eakman, Michelle, Foster, Julianne, Karovska, Margarita, Leisawitz, David, Morse, Jon A., Mozurkewich, David, Peacock, Sarah, Petro, Noah, Scowen, Paul, Sitarski, Breann, van Belle, Gerard, Wilkinson, Erik
Publikováno v:
Proc. SPIE 13095-54 July 2024
NASA's return to the Moon presents unparalleled opportunities to advance high-impact scientific capabilities. At the cutting edge of these possibilities are extremely high-resolution interferometric observations at visible and ultraviolet wavelengths
Externí odkaz:
http://arxiv.org/abs/2408.04699
Autor:
Kautz, Maggie, Males, Jared R., Close, Laird M., Haffert, Sebastiaan Y., Guyon, Olivier, Hedglen, Alexander, Gasho, Victor, Durney, Olivier, Noenickx, Jamison, Fletcher, Adam, Coronado, Fernando, Ford, John, Connors, Tom, Sullivan, Mark, Salanski, Tommy, Kelly, Doug, Demers, Richard, Bouchez, Antonin, Sitarski, Breann, Schurter, Patricio
GMagAO-X is a visible to NIR extreme adaptive optics (ExAO) system that will be used at first light for the Giant Magellan Telescope (GMT). GMagAO-X is designed to deliver diffraction-limited performance at visible and NIR wavelengths (6 to 10 mas) a
Externí odkaz:
http://arxiv.org/abs/2310.10888
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