Zobrazeno 1 - 10
of 273
pro vyhledávání: '"Covey, Kevin R."'
Autor:
Kunder, Andrea, Prudil, Zdenek, Skaggs, Claire, Reggiani, Henrique, Nataf, David M., Hughes, Joanne, Covey, Kevin R., Devine, Kathryn
RR Lyrae stars are excellent tracers of stellar populations for old, metal-poor components in the Milky Way Galaxy and the Local Group. Their luminosities have a metallicity-dependence, but determining spectroscopic [Fe/H] metallicities for RR Lyrae
Externí odkaz:
http://arxiv.org/abs/2407.01515
Autor:
Hsu, Chih-Chun, Burgasser, Adam J., Theissen, Christopher A., Birky, Jessica L., Aganze, Christian, Gerasimov, Roman, Schmidt, Sarah J., Blake, Cullen H., Covey, Kevin R., Moreno-Hilario, Elizabeth, Gelino, Christopher R., Serna, Javier, Brownstein, Joel R., Cunha, Katia
We present precise measurements of radial (RV) and projected rotational ($v\sin{i}$) velocities, effective temperatures, and surface gravities of a sample of 258 M6 to L2 dwarfs with multi-epoch, high-resolution ($\lambda/\Delta\lambda$ = 22500), nea
Externí odkaz:
http://arxiv.org/abs/2403.13760
Autor:
Butler, Evan, Kunder, Andrea, Prudil, Zdenek, Covey, Kevin R., Ball, Macy, Campos, Carlos, Gollnick, Kaylen, Carvajal, Julio Olivares, Hughes, Joanne, Devine, Kathryn, Johnson, Christian I., Vivas, A. Katherina, Rich, Michael R., Joyce, Meridith, Simon, Iulia T., Marchetti, Tommaso, Koch-Hansen, Andreas J., Clarkson, William I., Kuss, Rebekah
Patchick 99 is a candidate globular cluster located in the direction of the Galactic bulge, with a proper motion almost identical to the field and extreme field star contamination. A recent analysis suggests it is a low-luminosity globular cluster wi
Externí odkaz:
http://arxiv.org/abs/2401.13825
Autor:
Da Rio, Nicola, Tan, Jonathan C., Covey, Kevin R., Cottaar, Michiel, Foster, Jonathan B., Cullen, Nicholas C., Tobin, John, Kim, Jinyoung S., Meyer, Michael R., Nidever, David L., Stassun, Keivan G., Chojnowski, S. Drew, Flaherty, Kevin M., Majewski, Steven R., Skrutskie, Michael F., Zasowski, Gail, Pan, Kaike
The kinematics and dynamics of young stellar populations enable us to test theories of star formation. With this aim, we continue our analysis of the SDSS-III/APOGEE IN-SYNC survey, a high-resolution near-infrared spectroscopic survey of young cluste
Externí odkaz:
http://hdl.handle.net/10150/625776
http://arizona.openrepository.com/arizona/handle/10150/625776
http://arizona.openrepository.com/arizona/handle/10150/625776
Autor:
Román-Zúñiga, Carlos G., Kounkel, Marina, Hernández, Jesús, Ramírez, Karla Peña, López-Valdivia, Ricardo, Covey, Kevin R., Stutz, Amelia M., Román-López, Alexandre, Campbell, Hunter, Khilfeh, Eliott, Tapia, Mauricio, Stringfellow, Guy S., Downes, Juan José, Stassun, Keivan G., Minniti, Dante, Bayo, Amelia, Kim, Jinyoung Serena, Suárez, Genaro, Ybarra, Jason, Fernández-Trincado, José G., Longa-Peña, Penélope, Ramírez-Preciado, Valeria, Serna, Javier, Lane, Richard R., García-Hernández, D. A., Beaton, Rachael L., Bizyaev, Dmitry, Pan, Kaike
The Sloan Digital Sky Survey IV (SDSS-IV) APOGEE-2 primary science goal was to observe red giant stars throughout the Galaxy to study its dynamics, morphology, and chemical evolution. The APOGEE instrument, a high-resolution 300 fiber H-band (1.55-1.
Externí odkaz:
http://arxiv.org/abs/2211.09217
Autor:
Campbell, Hunter, Khilfeh, Elliott, Covey, Kevin R., Kounkel, Marina, Ballantyne, Richard, Corey, Sabrina, Román-Zúñiga, Carlos G., Hernández, Jesús, Martínez, Ezequiel Manzo, Ramírez, Karla Peña, Roman-Lopes, Alexandre, Stassun, Keivan G., Stringfellow, Guy S., Borissova, Jura, Chojnowski, S. Drew, Ramírez-Preciado, Valeria, Kim, Jinyoung Serena, Serna, Javier, Stutz, Amelia M., López-Valdivia, Ricardo, Suárez, Genaro, Ybarra, Jason E., Longa-Peña, Penélope, Fernández-Trincado, José G.
Very young (t $\lesssim$ 10 Myrs) stars possess strong magnetic fields that channel ionized gas from the interiors of their circumstellar discs to the surface of the star. Upon impacting the stellar surface, the shocked gas recombines and emits hydro
Externí odkaz:
http://arxiv.org/abs/2211.06454
We present 370 candidate eclipsing binaries (EBs), identified from ~510,000 short cadence TESS light curves. Our statistical criteria identify 5,105 light curves with features consistent with eclipses (~1% of the initial sample). After visual confirm
Externí odkaz:
http://arxiv.org/abs/2205.14184
Autor:
Núñez, Alejandro, Agüeros, Marcel A., Covey, Kevin R., Douglas, Stephanie T., Drake, Jeremy J., Rampalli, Rayna, Bowsher, Emily C., Cargile, Phillip A., Kraus, Adam L., Law, Nicholas M.
X-ray observations of low-mass stars in open clusters are critical to understanding the dependence of magnetic activity on stellar properties and their evolution. Praesepe and the Hyades, two of the nearest, most-studied open clusters, are among the
Externí odkaz:
http://arxiv.org/abs/2205.06461
Autor:
Andrews, Jeff J., Curtis, Jason L., Chanamé, Julio, Agüeros, Marcel A., Schuler, Simon C., Kounkel, Marina, Covey, Kevin R.
Our view of the variety of stellar structures pervading the local Milky Way has been transformed by the application of clustering algorithms to the Gaia catalog. In particular, several stellar streams have been recently discovered that are comprised
Externí odkaz:
http://arxiv.org/abs/2110.06278
Autor:
Beaton, Rachael L., Oelkers, Ryan J., Hayes, Christian R., Covey, Kevin R., Chojnowski, S. D., De Lee, Nathan, Sobeck, Jennifer S., Majewski, Steven R., Cohen, Roger, Fernandez-Trincado, Jose, Longa-Pena, Penelope, O'Connell, Julia E., Santana, Felipe A., Stringfellow, Guy S., Zasowski, Gail, Aerts, Conny, Anguiano, Borja, Bender, Chad, Canas, Caleb I., Cunha, Katia, Fleming, John Donor Scott W., Frinchaboy, Peter M., Feuillet, Diane, Harding, Paul, Hasselquist, Sten, Holtzman, Jon, Johnson, Jennifer A., Kollmeier, Juna A., Kounkel, Marina, Mahadevan, Suvrath, Price-Whelan, Adrian. M., Rojas-Arriagada, Alvaro, Roman-Zuniga, Carlos, Schlafly, Edward F., Schultheis, Mathias, Shetrone, Matthew, Simon, Joshua D., Stassun, Keivan G., Stutz, Amelia M., Tayar, Jamie, Teske, Johanna, Tkachenko, Andrew, Troup, Nick, Albareti, Franco D., Bizyaev, Dmitry, Bovy, Jo, Burgasser, Adam J., Comparat, Johan, Downes, Juan Jose, Geisler, Doug, Inno, Laura, Manchado, Arturo, Ness, Melissa K., Pinsonneault, Marc H., Prada, Francisco, Roman-Lopes, Alexandre, Simonian, Gregory V. A., Smith, Verne V., Yan, Renbin, Zamora, Olga
APOGEE-2 is a dual-hemisphere, near-infrared (NIR), spectroscopic survey with the goal of producing a chemo-dynamical mapping of the Milky Way Galaxy. The targeting for APOGEE-2 is complex and has evolved with time. In this paper, we present the upda
Externí odkaz:
http://arxiv.org/abs/2108.11907