Zobrazeno 1 - 10
of 6 607
pro vyhledávání: '"Stefánsson A"'
Autor:
Beard, Corey, Robertson, Paul, Lubin, Jack, Han, Te, Holcomb, Rae, Premnath, Pranav, Butler, R. Paul, Dalba, Paul A., Holden, Brad, Blake, Cullen H., Diddams, Scott A., Gupta, Arvind F., Halverson, Samuel, Krolikowski, Daniel M., Li, Dan, Lin, Andrea S. J., Logsdon, Sarah E., Lubar, Emily, Mahadevan, Suvrath, McElwain, Michael W., Ninan, Joe P., Paredes, Leonardo A., Roy, Arpita, Schwab, Christian, Stefansson, Gudmundur, Terrien, Ryan C., Wright, Jason T.
Stellar activity contamination of radial velocity (RV) data is one of the top challenges plaguing the field of extreme precision RV (EPRV) science. Previous work has shown that photometry can be very effective at removing such signals from RV data, e
Externí odkaz:
http://arxiv.org/abs/2412.11329
Autor:
Espinoza-Retamal, Juan I., Jordán, Andrés, Brahm, Rafael, Petrovich, Cristobal, Sedaghati, Elyar, Stefánsson, Guðmundur, Hobson, Melissa J., Pinto, Marcelo Tala, Muñoz, Diego J., Boyle, Gavin, Leiva, Rodrigo, Suc, Vincent
Essential information about the formation and evolution of planetary systems can be found in their architectures -- in particular, in stellar obliquity ($\psi$) -- as they serve as a signature of their dynamical evolution. Here, we present ESPRESSO o
Externí odkaz:
http://arxiv.org/abs/2412.08692
Numerical modeling of elastic wave propagation in the subsurface requires applicability to heterogeneous, anisotropic and discontinuous media, as well as support of free surface boundary conditions. Here we study the cell-centered finite volume metho
Externí odkaz:
http://arxiv.org/abs/2412.06514
The First Spin-Orbit Obliquity of an M dwarf/brown dwarf System: An eccentric and aligned TOI-2119 b
Autor:
Doyle, Lauren, Cañas, Caleb I., Libby-Roberts, Jessica E., Cegla, Heather M., Stefánsson, Guðmundur K., Anderson, David, Armstrong, David J., Bender, Chad, Bayliss, Daniel, Carmichael, Theron W., Casewell, Sarah, Kanodia, Shubham, Lafarga, Marina, Lin, Andrea S. J., Mahadevan, Suvrath, Monson, Andy, Robertson, Paul, Veras, Dimitri
We report the first instance of an M dwarf/brown dwarf obliquity measurement for the TOI-2119 system using the Rossiter-McLaughlin effect. TOI-2119 b is a transiting brown dwarf orbiting a young, active early M dwarf ($T_{\rm{eff}}$ = 3553 K). It has
Externí odkaz:
http://arxiv.org/abs/2411.18567
Autor:
Brady, M., Bean, J., Stefánsson, G., Brown, N., Seifahrt, A., Basant, R., Das, T., Luque, R., Stürmer, J.
A star's spin-orbit angle can give us insight into a system's formation and dynamical history. In this paper, we use MAROON-X observations of the Rossiter-McLaughlin (RM) effect to measure the projected obliquity of the LP 261-75 (also known as TOI-1
Externí odkaz:
http://arxiv.org/abs/2411.10402
Autor:
Hotnisky, Andrew, Kanodia, Shubham, Libby-Roberts, Jessica, Mahadevan, Suvrath, Canas, Caleb I., Gupta, Arvind F., Han, Te, Kobulnicky, Henry A., Larsen, Alexander, Robertson, Paul, Rodruck, Michael, Stefansson, Gudmundur, Cochran, William D., Delamer, Megan, Diddams, Scott A., Fernandes, Rachel B., Halverson, Samuel, Hebb, Leslie, Lin, Andrea S. J., Monson, Andrew, Ninan, Joe P., Roy, Arpita, Schwab, Christian
We present the discovery of TOI-6303b and TOI-6330b, two massive transiting super-Jupiters orbiting a M0 and a M2 star respectively, as part of the Searching for GEMS survey. These were detected by TESS and then confirmed via ground-based photometry
Externí odkaz:
http://arxiv.org/abs/2411.08159
Autor:
Dong, Jiayin, Chontos, Ashley, Zhou, George, Stefansson, Gudmundur, Wang, Songhu, Huang, Chelsea X., Gupta, Arvind F., Halverson, Samuel, Kanodia, Shubham, Luhn, Jacob K., Mahadevan, Suvrath, Monson, Andrew, Alvarado-Montes, Jaime A., Ninan, Joe P., Robertson, Paul, Roy, Arpita, Schwab, Christian, Wright, Jason T.
Super Jupiters are giant planets with several Jupiter masses. It remains an open question whether these planets originate with such high masses or grow through collisions. Previous work demonstrates that warm super Jupiters tend to have more eccentri
Externí odkaz:
http://arxiv.org/abs/2411.01356
Autor:
Stefansson, Gudmundur, Mahadevan, Suvrath, Winn, Joshua, Marcussen, Marcus, Kanodia, Shubham, Albrecht, Simon, Fitzmaurice, Evan, Mikulskitye, One, Cañas, Caleb, Espinoza-Retamal, Juan Ignacio, Zwart, Yiri, Krolikowski, Daniel, Hotnisky, Andrew, Robertson, Paul, Alvarado-Montes, Jaime A., Bender, Chad, Blake, Cullen, Callingham, Joe, Cochran, William, Delamer, Megan, Diddams, Scott, Dong, Jiayin, Fernandes, Rachel, Giovanazzi, Mark, Halverson, Samuel, Libby-Roberts, Jessica, Logsdon, Sarah E, McElwain, Michael, Ninan, Joe, Rajagopal, Jayadev, Reji, Varghese, Roy, Arpita, Schwab, Christian, Wright, Jason
Gaia astrometry of nearby stars is precise enough to detect the tiny displacements induced by substellar companions, but radial velocity data are needed for definitive confirmation. Here we present radial velocity follow-up observations of 28 M and K
Externí odkaz:
http://arxiv.org/abs/2410.05654
Autor:
Masuda, Kento, Libby-Roberts, Jessica E., Livingston, John H., Stevenson, Kevin B., Gao, Peter, Vissapragada, Shreyas, Fu, Guangwei, Han, Te, Greklek-McKeon, Michael, Mahadevan, Suvrath, Agol, Eric, Bello-Arufe, Aaron, Berta-Thompson, Zachory, Canas, Caleb I., Chachan, Yayaati, Hebb, Leslie, Hu, Renyu, Kawashima, Yui, Knutson, Heather A., Morley, Caroline V., Murray, Catriona A., Ohno, Kazumasa, Tokadjian, Armen, Zhang, Xi, Welbanks, Luis, Nixon, Matthew C., Freedman, Richard, Narita, Norio, Fukui, Akihiko, de Leon, Jerome P., Mori, Mayuko, Palle, Enric, Murgas, Felipe, Parviainen, Hannu, Esparza-Borges, Emma, Jontof-Hutter, Daniel, Collins, Karen A., Benni, Paul, Barkaoui, Khalid, Pozuelos, Francisco J., Gillon, Michael, Jehin, Emmanuel, Benkhaldoun, Zouhair, Hawley, Suzanne, Lin, Andrea S. J., Stefansson, Gudmundur, Bieryla, Allyson, Yilmaz, Mesut, Senavci, Hakan Volkan, Girardin, Eric, Marino, Giuseppe, Wang, Gavin
Kepler-51 is a $\lesssim 1\,\mathrm{Gyr}$-old Sun-like star hosting three transiting planets with radii $\approx 6$-$9\,R_\oplus$ and orbital periods $\approx 45$-$130\,\mathrm{days}$. Transit timing variations (TTVs) measured with past Kepler and Hu
Externí odkaz:
http://arxiv.org/abs/2410.01625
Autor:
Brinkman, Casey L., Weiss, Lauren M., Huber, Daniel, Lee, Rena A., Kolecki, Jared, Tenn, Gwyneth, Zhang, Jingwen, Narayanan, Suchitra, Polanski, Alex S., Dai, Fei, Bean, Jacob L., Beard, Corey, Brady, Madison, Brodheim, Max, Brown, Matt, Deich, William, Edelstein, Jerry, Fulton, Benjamin J., Giacalone, Steven, Gibson, Steven R., Gilbert, Gregory J., Halverson, Samuel, Handley, Luke, Hill, Grant M., Holcomb, Rae, Holden, Bradford, Householder, Aaron, Howard, Andrew W., Isaacson, Howard, Kaye, Stephen, Laher, Russ R., Lanclos, Kyle, Ong, J. M. Joel, Payne, Joel, Petigura, Eric A., Pidhorodetska, Daria, Poppett, Claire, Roy, Arpita, Rubenzahl, Ryan, Saunders, Nicholas, Schwab, Christian, Seifahrt, Andreas, Shaum, Abby P., Sirk, Martin M., Smith, Chris, Smith, Roger, Stefánsson, Guðmundur, Stürmer, Julian, Thorne, Jim, Turtelboom, Emma V., Tyler, Dakotah, Valliant, John, Van Zandt, Judah, Walawender, Josh, Yee, Samuel W., Yeh, Sherry, Zink, Jon
Hundreds of exoplanets between 1-1.8 times the size of the Earth have been discovered on close in orbits. However, these planets show such a diversity in densities that some appear to be made entirely of iron, while others appear to host gaseous enve
Externí odkaz:
http://arxiv.org/abs/2410.00213