Zobrazeno 1 - 10
of 106
pro vyhledávání: '"White, Russel J."'
Autor:
Beyer, Alexa C., White, Russel J.
Main sequence stars transition at mid-F spectral types from slowly rotating (cooler stars) to rapidly rotating (hotter stars), a transition known as the Kraft Break (Kraft 1967) and attributed the disappearance of the outer convective envelope, causi
Externí odkaz:
http://arxiv.org/abs/2408.02638
Autor:
Jao, Wei-Chun, Henry, Todd J., White, Russel J., Nisak, Azmain H., Hubbard-James, Hodari-Sadiki, Paredes, Leonardo A.
Since identifying the gap in the H-R Diagram (HRD) marking the transition between partially and fully convective interiors, a unique type of slowly pulsating M dwarf has been proposed. These unstable M dwarfs provide new laboratories in which to unde
Externí odkaz:
http://arxiv.org/abs/2304.14452
Autor:
Yep, Alexandra C., White, Russel J.
Based on Gaia DR2 data and new CHIRON radial velocities, we have discovered that two nearby stellar associations UPK 535 (318.08 $\pm$ 0.29 pc, $25^{+15}_{-10}$ Myr, 174 stars) and Yep 3 (339.54 $\pm$ 0.25 pc , $45^{+55}_{-20}$ Myr, 297 stars) in the
Externí odkaz:
http://arxiv.org/abs/2112.11657
Autor:
Paredes, Leonardo A., Henry, Todd J., Quinn, Samuel N., Gies, Douglas R., Hinojosa-Goñi, Rodrigo, James, Hodari-Sadiki, Jao, Wei-Chun, White, Russel J.
Publikováno v:
The Astronomical Journal 162 (2021) 176
We report initial results of a large radial velocity survey of K dwarfs up to a distance of 50 pc from the Solar System, to look for stellar, brown dwarf, and jovian planets using radial velocities from the CHIRON spectrograph on the CTIO/SMARTS 1.5m
Externí odkaz:
http://arxiv.org/abs/2111.15028
Autor:
Zhou, George, Quinn, Samuel N., Irwin, Jonathan, Huang, Chelsea X., Collins, Karen A., Bouma, Luke G., Khan, Lamisha, Landrigan, Anaka, Vanderburg, Andrew M., Rodriguez, Joseph E., Latham, David W., Torres, Guillermo, Douglas, Stephanie T., Bieryla, Allyson, Esquerdo, Gilbert A., Berlind, Perry, Calkins, Michael L., Buchhave, Lars A., Charbonneau, David, Collins, Kevin I., Kielkopf, John F., Jensen, Eric L. N., Tan, Thiam-Guan, Hart, Rhodes, Carter, Brad, Stockdale, Christopher, Ziegler, Carl, Law, Nicholas, Mann, Andrew W., Howell, Steve B., Matson, Rachel A., Scott, Nicholas J., Furlan, Elise, White, Russel J., Hellier, Coel, Anderson, David R., West, Richard G., Ricker, George, Vanderspek, Roland, Seager, Sara, Jenkins, Jon M., Winn, Joshua N., Mireles, Ismael, Rowden, Pamela, Yahalomi, Daniel A., Wohler, Bill, Brasseur, Clara. E., Daylan, Tansu, Coloń, Knicole D.
Planets around young stars trace the early evolution of planetary systems. We report the discovery and validation of two planetary systems with ages $\lesssim 300$ Myr from observations by the Transiting Exoplanet Survey Satellite. TOI-251 is a 40-32
Externí odkaz:
http://arxiv.org/abs/2011.13349
Autor:
Yep, Alexandra, White, Russel J.
We have conducted a high-dispersion ($R \sim$ 34,000) optical spectroscopic study of 10 young stars near the cometary gloule CG 30 in the Gum Nebula, a diffuse H \textsc{ii} region home to at least 32 cometary globules. All 10 spectroscopically obser
Externí odkaz:
http://arxiv.org/abs/1912.09677
Autor:
Quinn, Samuel N., White, Russel J.
Publikováno v:
2016, ApJ, 833, 173
The next generation of exoplanet space photometry missions proposed by both NASA and ESA promise to discover small transiting planets around the nearest and brightest main-sequence stars. The physical and rotational properties of these stars, in conj
Externí odkaz:
http://arxiv.org/abs/1612.08986
Autor:
Bailey III, John I., Mateo, Mario, White, Russel J., Shectman, Stephen A., Crane, Jeffrey D., Olszewski, Edward W.
We present a multiplexed, high-resolution (R~50,000 median) spectroscopic survey designed to detect exoplanet candidates in two southern star clusters (NGC 2516 and NGC 2422) using the Michigan/Magellan Fiber System (M2FS) on the Magellan/Clay telesc
Externí odkaz:
http://arxiv.org/abs/1603.08673
Autor:
Davison, Cassy L., White, Russel J., Henry, Todd J., Riedel, Adric R., Jao, Wei-Chun, Bailey III, John I., Quinn, Samuel N., Cantrell, Justin R., Subasavage, John P., Winters, Jen G.
We present a carefully vetted equatorial ($\pm$ 30$^\circ$ Decl.) sample of all known single (within 4'') mid M-dwarfs (M2.5V-M8.0V) extending out to 10 pc; their proximity and low masses make them ideal targets for planet searches. For this sample o
Externí odkaz:
http://arxiv.org/abs/1501.05012
Autor:
Riedel, Adric R., Finch, Charlie T., Henry, Todd J., Subasavage, John P., Jao, Wei-Chun, Malo, Lison, Rodriguez, David R., White, Russel J., Gies, Douglas R., Dieterich, Sergio B., Winters, Jennifer G., Davison, Cassy L., Nelan, Edmund P., Blunt, Sarah C., Cruz, Kelle L., Rice, Emily L., Ianna, Philip A.
We present basic observational data and association membership analysis for 45 young and active low-mass stellar systems from the ongoing RECONS photometry and astrometry program at the Cerro Tololo Inter-American Observatory. Most of these systems h
Externí odkaz:
http://arxiv.org/abs/1401.0722