Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Cunha, Katia"'
Autor:
Melo, Edypo, Souto, Diogo, Cunha, Katia, Smith, Verne V., Wanderley, Fábio, Grilo, Vinicius, Camara, Deusalete, Murta, Kely, Hejazi, Neda, Crossfield, Ian J. M., Teske, Johanna, Luque, Rafael, Zhang, Michael, Bean, Jacob
Exoplanets hosting M dwarfs are the best targets to characterize Earth-like or super-Earth planetary atmospheres with the James Webb Space Telescope (JWST). We determine detailed stellar parameters ($T_{\rm eff}$, log$g$, and $\xi$) and individual ab
Externí odkaz:
http://arxiv.org/abs/2406.00111
Autor:
Loaiza-Tacuri, V., Cunha, Katia, Smith, Verne V., Quispe-Huaynasi, F., Costa-Almeida, Ellen, Ghezzi, Luan, Melendez, Jorge
Effective temperatures, surface gravities, and iron abundances were derived for 109 stars observed by the K2 mission using equivalent width measurements of Fe I and Fe II lines. Calculations were carried out in LTE using Kurucz model atmospheres. Ste
Externí odkaz:
http://arxiv.org/abs/2405.08128
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:
Fernandes, Rachel B., Hardegree-Ullman, Kevin K., Pascucci, Ilaria, Bergsten, Galen J., Mulders, Gijs D., Cunha, Katia, Mamajek, Eric E., Pearson, Kyle A., Feiden, Gregory A., Curtis, Jason L.
The demographics of young exoplanets can shed light onto their formation and evolution processes. Exoplanet properties are derived from the properties of their host stars. As such, it is important to accurately characterize the host stars since any s
Externí odkaz:
http://arxiv.org/abs/2308.13039
Autor:
Loaiza-Tacuri, V., Cunha, Katia, Smith, Verne V., Martinez, Cintia F., Ghezzi, Luan, Schuler, Simon C., Teske, Johanna, Howell, Steve B.
The physical properties of transiting exoplanets are connected with the physical properties of their host stars. We present a homogeneous spectroscopic analysis based on spectra of FGK-type stars observed with the Hydra spectrograph on the WIYN teles
Externí odkaz:
http://arxiv.org/abs/2301.03961
Autor:
Terrien, Ryan C., Keen, Allison, Oda, Katy, Parts, Winter, Stefánsson, Guðmundur, Mahadevan, Suvrath, Robertson, Paul, Ninan, Joe P., Beard, Corey, Bender, Chad F., Cochran, William D., Cunha, Katia, Diddams, Scott A., Fredrick, Connor, Halverson, Samuel, Hearty, Fred, Ickler, Adam, Kanodia, Shubham, Libby-Roberts, Jessica E., Lubin, Jack, Metcalf, Andrew J., Olsen, Freja, Ramsey, Lawrence W., Roy, Arpita, Schwab, Christian, Smith, Verne V., Turner, Ben
Accurate tracers of the stellar magnetic field and rotation are cornerstones for the study of M dwarfs and for reliable detection and characterization of their exoplanetary companions. Such measurements are particularly challenging for old, slowly ro
Externí odkaz:
http://arxiv.org/abs/2201.11288
Autor:
Wilson, Robert F., Cañas, Caleb I., Majewski, Steven R., Cunha, Katia, Smith, Verne V., Bender, Chad F., Mahadevan, Suvrath, Fleming, Scott W., Teske, Johanna, Ghezzi, Luan, Jönsson, Henrik, Beaton, Rachael L., Hasselquist, Sten, Stassun, Keivan, Nitschelm, Christian, García-Hernández, D. A., Hayes, Christian R., Tayar, Jamie
The chemical abundances of planet-hosting stars offer a glimpse into the composition of planet-forming environments. To further understand this connection, we make the first ever measurement of the correlation between planet occurrence and chemical a
Externí odkaz:
http://arxiv.org/abs/2111.01753
Autor:
Ghezzi, Luan, Martinez, Cintia F., Wilson, Robert F., Cunha, Katia, Smith, Verne V., Majewski, Steven R.
We present independent and self-consistent metallicities for a sample of 807 planet-hosting stars from the California-Kepler Survey from an LTE spectroscopic analysis using a selected sample of Fe I and Fe II lines. Correlations between host-star met
Externí odkaz:
http://arxiv.org/abs/2107.04153
Autor:
Souto, Diogo, Cunha, Katia, Smith, Verne V., Prieto, C. Allende, Burgasser, Adam, Covey, Kevin, Garcia-Hernandez, D. A., Holtzman, Jon A., Johnson, Jennifer A., Jonsson, Henrik, Mahadevan, Suvrath, Majewski, Steven R., Masseron, Thomas, Shetrone, Matthew, Rojas-Ayala, Barbara, Sobeck, Jennifer, Stassun, Keivan G., Terrien, Ryan, Teske, Johanna, Wanderley, Fabio, Zamora, Olga
We present spectroscopic determinations of the effective temperatures, surface gravities and metallicities for 21 M-dwarfs observed at high-resolution (R $\sim$ 22,500) in the \textit{H}-band as part of the SDSS-IV APOGEE survey. The atmospheric para
Externí odkaz:
http://arxiv.org/abs/2001.05597
Autor:
Huber, Daniel, Basu, Sarbani, Beck, Paul, Bedding, Timothy R., Buzasi, Derek, Cantiello, Matteo, Chaplin, William J., Christiansen, Jessie L., Cunha, Katia, Egeland, Ricky, Fuller, Jim, Garcia, Rafael A., Gies, Douglas R., Guzik, Joyce, Hekker, Saskia, Hermes, JJ, Jackiewicz, Jason, Johnson, Jennifer, Kawaler, Steve, Metcalfe, Travis, Mosser, Benoit, Ness, Melissa, Pinsonneault, Marc, Piro, Anthony L., Aguirre, Victor Silva, Soderblom, David, Stassun, Keivan, Tayar, Jamie, Brummelaar, Theo ten, Roettenbacher, Rachael, Sobeck, Jennifer, Trampedach, Regner, van Belle, Gerard, van Saders, Jennifer, Stello, Dennis
Asteroseismology is the only observational tool in astronomy that can probe the interiors of stars, and is a benchmark method for deriving fundamental properties of stars and exoplanets. Over the coming decade, space-based and ground-based observatio
Externí odkaz:
http://arxiv.org/abs/1903.08188