Zobrazeno 1 - 10
of 185
pro vyhledávání: '"Szymkowiak, A. E."'
Autor:
Zhao, Lily L., Dumusque, Xavier, Ford, Eric B., Llama, Joe, Mortier, Annelies, Bedell, Megan, Moulla, Khaled Al, Bender, Chad F., Blake, Cullen H., Brewer, John M., Cameron, Andrew Collier, Cosentino, Rosario, Figueira, Pedro, Fischer, Debra A., Ghedina, Adriano, Gonzalez, Manuel, Halverson, Samuel, Kanodia, Shubham, Latham, David W., Lin, Andrea S. J., Curto, Gaspare Lo, Lodi, Marcello, Logsdon, Sarah E., Lovis, Christophe, Mahadevan, Suvrath, Monson, Andrew, Ninan, Joe P., Pepe, Francesco, Roettenbacher, Rachael M., Roy, Arpita, Santos, Nuno C., Schwab, Christian, Stefánsson, Guðmundur, Szymkowiak, Andrew E., Terrien, Ryan C., Udry, Stephane, Weiss, Sam A., Wildi, François, Wildi, Thibault, Wright, Jason T.
We present an analysis of Sun-as-a-star observations from four different high-resolution, stabilized spectrographs -- HARPS, HARPS-N, EXPRES, and NEID. With simultaneous observations of the Sun from four different instruments, we are able to gain ins
Externí odkaz:
http://arxiv.org/abs/2309.03762
Autor:
Korolik, Maria, Roettenbacher, Rachael M., Fischer, Debra A., Kane, Stephen R., Perkins, Jean M., Monnier, John D., Davies, Claire L., Kraus, Stefan, Bouquin, Jean-Baptiste Le, Anugu, Narsireddy, Gardner, Tyler, Lanthermann, Cyprien, Schaefer, Gail H., Setterholm, Benjamin, Brewer, John M., Llama, Joe, Zhao, Lily L., Szymkowiak, Andrew E., Henry, Gregory W.
To accurately characterize the planets a star may be hosting, stellar parameters must first be well-determined. $\tau$ Ceti is a nearby solar analog and often a target for exoplanet searches. Uncertainties in the observed rotational velocities have m
Externí odkaz:
http://arxiv.org/abs/2307.10394
Autor:
Brewer, John M., Zhao, Lily L., Fischer, Debra A., Roettenbacher, Rachael M., Henry, Gregory W., Llama, Joe, Szymkowiak, Andrew E., Cabot, Samuel H. C., Weiss, Sam A., McCarthy, Chris
Thousands of exoplanet detections have been made over the last twenty-five years using Doppler observations, transit photometry, direct imaging, and astrometry. Each of these methods is sensitive to different ranges of orbital separations and planeta
Externí odkaz:
http://arxiv.org/abs/2306.06888
Autor:
Zhao, Lily L., Kunovac, Vedad, Brewer, John M., Llama, Joe, Millholland, Sarah C., Hedges, Christina, Szymkowiak, Andrew E., Roettenbacher, Rachael M., Cabot, Samuel H. C., Weiss, Sam A., Fischer, Debra A.
A planet's orbital alignment places important constraints on how a planet formed and consequently evolved. The dominant formation pathway of ultra-short period planets ($P<1$ day) is particularly mysterious as such planets most likely formed further
Externí odkaz:
http://arxiv.org/abs/2212.03953
Autor:
Zhao, Lily L., Fischer, Debra A., Ford, Eric B., Wise, Alex, Cretignier, Michaël, Aigrain, Suzanne, Barragan, Oscar, Bedell, Megan, Buchhave, Lars A., Camacho, João D., Cegla, Heather M., Cisewski-Kehe, Jessi, Cameron, Andrew Collier, de Beurs, Zoe L., Dodson-Robinson, Sally, Dumusque, Xavier, Faria, João P., Gilbertson, Christian, Haley, Charlotte, Harrell, Justin, Hogg, David W., Holzer, Parker, John, Ancy Anna, Klein, Baptiste, Lafarga, Marina, Lienhard, Florian, Maguire-Rajpaul, Vinesh, Mortier, Annelies, Nicholson, Belinda, Palumbo III, Michael L., Delgado, Victor Ramirez, Shallue, Christopher J., Vanderburg, Andrew, Viana, Pedro T. P., Zhao, Jinglin, Zicher, Norbert, Cabot, Samuel H. C., Henry, Gregory W., Roettenbacher, Rachael M., Brewer, John M., Llama, Joe, Petersburg, Ryan R., Szymkowiak, Andrew E.
Measured spectral shifts due to intrinsic stellar variability (e.g., pulsations, granulation) and activity (e.g., spots, plages) are the largest source of error for extreme precision radial velocity (EPRV) exoplanet detection. Several methods are des
Externí odkaz:
http://arxiv.org/abs/2201.10639
Autor:
Cabot, Samuel H. C., Roettenbacher, Rachael M., Henry, Gregory W., Zhao, Lily, Harmon, Robert O., Fischer, Debra A., Brewer, John M., Llama, Joe, Petersburg, Ryan R., Szymkowiak, Andrew E.
By controlling instrumental errors to below 10 cm/s, the EXtreme PREcision Spectrograph (EXPRES) allows for a more insightful study of photospheric velocities that can mask weak Keplerian signals. Gaussian Processes (GP) have become a standard tool f
Externí odkaz:
http://arxiv.org/abs/2010.14717
Autor:
Brewer, John M., Fischer, Debra A., Blackman, Ryan T., Cabot, Samuel H. C., Davis, Allen B., Laughlin, Gregory, Leet, Christopher, Ong, J. M. Joel, Petersburg, Ryan R., Szymkowiak, Andrew E., Zhao, Lily L., Henry, Gregory W., Llama, Joe
The next generation of exoplanet-hunting spectrographs should deliver up to an order of magnitude improvement in radial velocity precision over the standard 1 m/s state of the art. This advance is critical for enabling the detection of Earth-mass pla
Externí odkaz:
http://arxiv.org/abs/2006.02303
Autor:
Blackman, Ryan T., Fischer, Debra A., Jurgenson, Colby A., Sawyer, David, McCracken, Tyler M., Szymkowiak, Andrew E., Petersburg, Ryan R., Ong, J. M. Joel, Brewer, John M., Zhao, Lily L., Leet, Christopher, Buchhave, Lars A., Tronsgaard, René, Llama, Joe, Sawyer, Travis, Davis, Allen B., Cabot, Samuel H. C., Shao, Michael, Trahan, Russell, Nemati, Bijan, Genoni, Matteo, Pariani, Giorgio, Riva, Marco, Probst, Rafael A., Holzwarth, Ronald, Steinmetz, Tilo, Fournier, Paul, Pawluczyk, Rafal
The EXtreme PREcision Spectrograph (EXPRES) is a new Doppler spectrograph designed to reach a radial velocity measurement precision sufficient to detect Earth-like exoplanets orbiting nearby, bright stars. We report on extensive laboratory testing an
Externí odkaz:
http://arxiv.org/abs/2003.08852
Autor:
Petersburg, Ryan R., Ong, J. M. Joel, Zhao, Lily L., Blackman, Ryan T., Brewer, John M., Buchhave, Lars A., Cabot, Samuel H. C., Davis, Allen B., Jurgenson, Colby A., Leet, Christopher, McCracken, Tyler M., Sawyer, David, Sharov, Mikhail, Tronsgaard, René, Szymkowiak, Andrew E., Fischer, Debra A.
The EXtreme PREcision Spectrograph (EXPRES) is an environmentally stabilized, fiber-fed, $R=137,500$, optical spectrograph. It was recently commissioned at the 4.3-m Lowell Discovery Telescope (LDT) near Flagstaff, Arizona. The spectrograph was desig
Externí odkaz:
http://arxiv.org/abs/2003.08851
Autor:
Wulf, Dallas, Eckart, Megan E, Galeazzi, Massimiliano, Jaeckel, Felix, Kelley, Richard L, Kilbourne, Caroline A, Morgan, Kelsey M, McCammon, Dan, Porter, F Scott, Szymkowiak, Andrew E
Publikováno v:
ApJ 884 120 (2019)
We present here a combined analysis of four high spectral resolution observations of the Diffuse X-ray Background (DXRB), made using the University of Wisconsin-Madison/Goddard Space Flight Center X-ray Quantum Calorimeter (XQC) sounding rocket paylo
Externí odkaz:
http://arxiv.org/abs/1909.07432