Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Dinescu, Dana I."'
Autor:
Casetti-Dinescu, Dana I., Pawlowski, Marcel S., Girard, Terrence M., Kanehisa, Kosuke J., Petroski, Alexander, Martone, Max, Kozhurina-Platais, Vera, Platais, Imants
We measure the absolute proper motion of Andromeda III using ACS/WFC and WFPC2 exposures spanning an unprecedented 22-year time baseline. The WFPC2 exposures have been processed using a deep-learning centering procedure recently developed as well as
Externí odkaz:
http://arxiv.org/abs/2409.08252
Autor:
Jha, Saurabh W., Casetti-Dinescu, Dana I., Bernstein, Gary M., Hayes, Matthew J., Oskinova, Lidia M., Pace, Andrew B., Quimby, Robert M., Reiter, Megan, Rest, Armin, Riess, Adam G., Sand, David J., Weisz, Daniel R.
The Astro2020 Decadal Survey recognizes time-domain astronomy as a key science area over the next decade and beyond. With over 30 years of HST data and the potential for 20 years of JWST operations, these flagship observatories offer an unparalleled
Externí odkaz:
http://arxiv.org/abs/2405.12297
Autor:
Casetti-Dinescu, Dana I., Baena-Galle, Roberto, Girard, Terrence M., Cervantes-Rovira, Alejandro, Todeasa, Sebastian
We present an expanded and improved deep-learning (DL) methodology for determining centers of star images on HST/WFPC2 exposures. Previously, we demonstrated that our DL model can eliminate the pixel-phase bias otherwise present in these undersampled
Externí odkaz:
http://arxiv.org/abs/2404.16995
Autor:
Casetti-Dinescu, Dana I., Girard, Terrence M., Baena-Galle, Roberto, Martone, Max, Schwendemann, Kate
A Deep Learning (DL) algorithm is built and tested for its ability to determine centers of star images on HST/WFPC2 exposures, in filters F555W and F814W. These archival observations hold great potential for proper-motion studies, but the undersampli
Externí odkaz:
http://arxiv.org/abs/2303.03346
Autor:
Casetti-Dinescu, Dana I., Hansen, Caitlin K., Girard, Terrence M., Kozhurina-Platais, Vera, Platais, Imants, Horch, Elliott P.
We measure the absolute proper motion of Leo I using a WFPC2/HST data set that spans up to 10 years, to date the longest time baseline utilized for this satellite. The measurement relies on ~ 2300 Leo I stars located near the center of light of the g
Externí odkaz:
http://arxiv.org/abs/2110.12022
Autor:
Casetti-Dinescu, Dana I., Girard, Terrence M., Kozhurina-Platais, Vera, Platais, Imants, Anderson, Jay, Horch, Elliott P.
Wide field planetary camera 2 (WFPC2) exposures are already some 20 years older than Gaia epoch observations, or future JWST observations. As such, they offer an unprecedented time baseline for high-precision proper-motion studies, provided the full
Externí odkaz:
http://arxiv.org/abs/2105.02330
Autor:
Horch, Elliott P., Broderick, Kyle G., Casetti-Dinescu, Dana I., Henry, Todd J., Fekel, Francis C., Muterspaugh, Matthew W., Willmarth, Daryl W., Winters, Jennifer G., van Belle, Gerard T., Clark, Catherine A., Everett, Mark E.
This paper details speckle observations of binary stars taken at the Lowell Discovery Telescope, the WIYN Telescope, and the Gemini telescopes between 2016 January and 2019 September. The observations taken at Gemini and Lowell were done with the Dif
Externí odkaz:
http://arxiv.org/abs/2104.07760
Autor:
Colton, Nicole M., Horch, Elliott P., Everett, Mark E., Howell, Steve B., Davidson, Jr., James W., Baptista, Brian J., Casetti-Dinescu, Dana I.
The Kepler mission and subsequent ground-based follow-up observations have revealed a number of exoplanet host stars with nearby stellar companions. This study presents speckle observations of 57 Kepler objects of interest (KOIs) that are also double
Externí odkaz:
http://arxiv.org/abs/2011.03903
Autor:
Horch, Elliott P., van Belle, Gerard T., Davidson, Jr., James W., Willmarth, Daryl, Fekel, Francis C., Muterspaugh, Matthew, Casetti-Dinescu, Dana I., Hahne, Frederick W., Granucci, Nicole M., Clark, Catherine, Winters, Jennifer G., Rupert, Justin D., Weiss, Samuel A., Colton, Nicole M., Nusdeo, Daniel A., Henry, Todd J.
We report 370 measures of 170 components of binary and multiple star systems, obtained from speckle imaging observations made with the Differential Speckle Survey Instrument at Lowell Observatory's Discovery Channel Telescope in 2015 through 2017. Of
Externí odkaz:
http://arxiv.org/abs/2004.03065
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