Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Roettenbacher, Rachael"'
Autor:
Anugu, Narsireddy, Gies, Douglas R., Roettenbacher, Rachael M., Monnier, John D., Montargés, Miguel, Mérand, Antoine, Baron, Fabien, Schaefer, Gail H., Shepard, Katherine A., Kraus, Stefan, Anderson, Matthew D., Codron, Isabelle, Gardner, Tyler, Gutierrez, Mayra, Köhler, Rainer, Kubiak, Karolina, Lanthermann, Cyprien, Majoinen, Olli, Scott, Nicholas J., Vollmann, Wolfgang
Stars with initial masses larger than 8 solar masses undergo substantial mass loss through mechanisms that remain elusive. Unraveling the origins of this mass loss is important for comprehending the evolutionary path of these stars, the type of super
Externí odkaz:
http://arxiv.org/abs/2408.11906
Autor:
Anugu, Narsireddy, Baron, Fabien, Monnier, John D., Gies, Douglas R., Roettenbacher, Rachael M., Schaefer, Gail H., Montargès, Miguel, Kraus, Stefan, Bouquin, Jean-Baptiste Le, Anderson, Matthew D., Brummelaar, Theo ten, Codron, Isabelle, Farrington, Christopher D., Gardner, Tyler, Gutierrez, Mayra, Köhler, Rainer, Lanthermann, Cyprien, Norris, Ryan, Scott, Nicholas J., Setterholm, Benjamin R., Vargas, Norman L.
Massive evolved stars such as red supergiants and hypergiants are potential progenitors of Type II supernovae, and they are known for ejecting substantial amounts of matter, up to half their initial mass, during their final evolutionary phases. The r
Externí odkaz:
http://arxiv.org/abs/2408.02756
Autor:
Evans, Nancy Remage, Schaefer, Gail, Gallenne, Alexandre, Torres, Guillermo, Horch, Elliot P., Anderson, Richard I, Monnier, John, Roettenbacher, Rachael M., Baron, Fabien, Anugu, Narsireddy, Davidson, Jr., James W., Kervella, Pierre, Bras, Garance, Proffitt, Charles, Mérand, Antoine, Karovska, Margarita, Jones, Jeremy, Lanthermann, Cyprien, Kraus, Stefan, Codron, Isabelle, Bond, Howard E., Viviani, Giordano
The 30 year orbit of the Cepheid Polaris has been followed with observations by the CHARA Array (Center for High Angular Resolution Astronomy) from 2016 through 2021. An additional measurement has been made with speckle interferometry at the Apache P
Externí odkaz:
http://arxiv.org/abs/2407.09641
Autor:
Evans, Nancy Remage, Gallenne, Alexandre, Kervella, Pierre, Mérand, Antoine, Monnier, John, Anderson, Richard I, Günther, H. Moritz, Proffitt, Charles, Winston, Elaine M., Pietrzynski, Grzegorz, Gieren, Wolfgang, Kuraszkiewicz, Joanna, Anugu, Narsireddy, Roettenbacher, Rachael M., Lanthermann, Cyprien, Gutierrez, Mayra, Schaefer, Gail, Setterholm, Benjamin R., Ibrahim, Noura, Kraus, Stefan
The Cepheid AW Per is a component in a multiple system with a long period orbit. The radial velocities of Griffin (2016) cover the 38 year orbit well. An extensive program of interferometry with the CHARA array is reported here, from which the long p
Externí odkaz:
http://arxiv.org/abs/2406.17881
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:
Rackham, Benjamin V., Espinoza, Néstor, Berdyugina, Svetlana V., Korhonen, Heidi, MacDonald, Ryan J., Montet, Benjamin T., Morris, Brett M., Oshagh, Mahmoudreza, Shapiro, Alexander I., Unruh, Yvonne C., Quintana, Elisa V., Zellem, Robert T., Apai, Dániel, Barclay, Thomas, Barstow, Joanna K., Bruno, Giovanni, Carone, Ludmila, Casewell, Sarah L., Cegla, Heather M., Criscuoli, Serena, Fischer, Catherine, Fournier, Damien, Giampapa, Mark S., Giles, Helen, Iyer, Aishwarya, Kopp, Greg, Kostogryz, Nadiia M., Krivova, Natalie, Mallonn, Matthias, McGruder, Chima, Molaverdikhani, Karan, Newton, Elisabeth R., Panja, Mayukh, Peacock, Sarah, Reardon, Kevin, Roettenbacher, Rachael M., Scandariato, Gaetano, Solanki, Sami, Stassun, Keivan G., Steiner, Oskar, Stevenson, Kevin B., Tregloan-Reed, Jeremy, Valio, Adriana, Wedemeyer, Sven, Welbanks, Luis, Yu, Jie, Alam, Munazza K., Davenport, James R. A., Deming, Drake, Dong, Chuanfei, Ducrot, Elsa, Fisher, Chloe, Gilbert, Emily, Kostov, Veselin, López-Morales, Mercedes, Line, Mike, Močnik, Teo, Mullally, Susan, Paudel, Rishi R., Ribas, Ignasi, Valenti, Jeff A.
Study Analysis Group 21 (SAG21) of NASA's Exoplanet Exploration Program Analysis Group (ExoPAG) was organized to study the effect of stellar contamination on space-based transmission spectroscopy, a method for studying exoplanetary atmospheres by mea
Externí odkaz:
http://arxiv.org/abs/2201.09905