Zobrazeno 1 - 10
of 6 865
pro vyhledávání: '"Armstrong, A. J."'
Autor:
Buder, S., Kos, J., Wang, E. X., McKenzie, M., Howell, M., Martell, S. L., Hayden, M. R., Zucker, D. B., Nordlander, T., Montet, B. T., Traven, G., Bland-Hawthorn, J., De Silva, G. M., Freeman, K. C., Lewis, G. F., Lind, K., Sharma, S., Simpson, J. D., Stello, D., Zwitter, T., Amarsi, A. M., Armstrong, J. J., Banks, K., Beavis, M. A., Beeson, K., Chen, B., Ciucă, I., Da Costa, G. S., de Grijs, R., Martin, B., Nataf, D. M., Ness, M. K., Rains, A. D., Scarr, T., Vogrinčič, R., Wang, Z., Wittenmyer, R. A., Xie, Y., Collaboration, The GALAH
The stars of the Milky Way carry the chemical history of our Galaxy in their atmospheres as they journey through its vast expanse. Like barcodes, we can extract the chemical fingerprints of stars from high-resolution spectroscopy. The fourth data rel
Externí odkaz:
http://arxiv.org/abs/2409.19858
Autor:
Castro-González, A., Lillo-Box, J., Armstrong, D. J., Acuña, L., Aguichine, A., Bourrier, V., Gandhi, S., Sousa, S. G., Delgado-Mena, E., Moya, A., Adibekyan, V., Correia, A. C. M., Barrado, D., Damasso, M., Winn, J. N., Santos, N. C., Barkaoui, K., Barros, S. C. C., Benkhaldoun, Z., Bouchy, F., Briceño, C., Caldwell, D. A., Collins, K. A., Essack, Z., Ghachoui, M., Gillon, M., Hounsell, R., Jehin, E., Jenkins, J. M., Keniger, M. A. F., Law, N., Mann, A. W., Nielsen, L. D., Pozuelos, F. J., Schanche, N., Seager, S., Tan, T. -G., Timmermans, M., Villaseñor, J., Watkins, C. N., Ziegler, C.
The Neptunian desert and savanna have been recently found to be separated by a ridge, an overdensity of planets in the $\simeq$3-5 days period range. These features are thought to be shaped by dynamical and atmospheric processes. However, their relat
Externí odkaz:
http://arxiv.org/abs/2409.18129
Autor:
Castro-González, A., Bourrier, V., Lillo-Box, J., Delisle, J. -B., Armstrong, D. J., Barrado, D., Correia, A. C. M.
Atmospheric and dynamical processes are thought to play a major role in shaping the distribution of close-in exoplanets. A striking feature of such distribution is the Neptunian desert, a dearth of Neptunes on the shortest-period orbits. We aimed to
Externí odkaz:
http://arxiv.org/abs/2409.10517
Autor:
Lillo-Box, J., Latham, D. W., Collins, K. A., Armstrong, D. J., Gandolfi, D., Jensen, E. L. N., Castro-González, A., Balsalobre-Ruza, O., Montesinos, B., Sousa, S. G., Aceituno, J., Schwarz, R. P., Narita, N., Fukui, A., Cabrera, J., Hadjigeorghiou, A., Kuzuhara, M., Hirano, T., Fridlund, M., Hatzes, A. P., Barragán, O., Batalha, N. M.
Publikováno v:
A&A 689, L8 (2024)
The transit technique has been very efficient in detecting planet candidate signals over the past decades. The so-called statistical validation approach has become a popular way of verifying a candidate's planetary nature. However, the incomplete con
Externí odkaz:
http://arxiv.org/abs/2408.11732
Autor:
Henderson, Beth A., Casewell, Sarah L., Jordán, Andrés, Brahm, Rafael, Henning, Thomas, Gill, Samuel, Mayorga, L. C., Ziegler, Carl, Stassun, Keivan G., Goad, Michael R., Acton, Jack, Alves, Douglas R., Anderson, David R., Apergis, Ioannis, Armstrong, David J., Bayliss, Daniel, Burleigh, Matthew R., Dragomir, Diana, Gillen, Edward, Günther, Maximilian N., Hedges, Christina, Hesse, Katharine M., Hobson, Melissa J., Jenkins, James S., Jenkins, Jon M., Kendall, Alicia, Lendl, Monika, Lund, Michael B., McCormac, James, Moyano, Maximiliano, Osborn, Ares, Pinto, Marcelo Tala, Ramsay, Gavin, Rapetti, David, Saha, Suman, Seager, Sara, Trifonov, Trifon, Udry, Stéphane, Vines, Jose I., West, Richard G., Wheatley, Peter J., Winn, Joshua N., Zivave, Tafadzwa
We report the discovery of the most eccentric transiting brown dwarf in the brown dwarf desert, TOI02490b. The brown dwarf desert is the lack of brown dwarfs around main sequence stars within $\sim3$~AU and is thought to be caused by differences in f
Externí odkaz:
http://arxiv.org/abs/2408.04475
Autor:
Armstrong, Joseph J., Tan, Jonathan C.
Context. Most stars form in clusters or associations but only a small number of these groups are expected to remain bound for longer than a few Myr. Once star formation has ended and the molecular gas around young stellar objects has been expelled vi
Externí odkaz:
http://arxiv.org/abs/2407.11845
Autor:
Nabbie, Emma, Huang, Chelsea X., Burt, Jennifer A., Armstrong, David J., Mamajek, Eric E., Adibekyan, Vardan, Sousa, Sérgio G., Lopez, Eric D., Thorngren, Daniel P., Fernández, Jorge, Li, Gongjie, Jenkins, James S., Vines, Jose I., da Silva, João Gomes, Wittenmyer, Robert A., Bayliss, Daniel, Briceño, César, Collins, Karen A., Dumusque, Xavier, Horne, Keith D., Keniger, Marcelo F., Law, Nicholas, Lillo-Box, Jorge, Liu, Shang-Fei, Mann, Andrew W., Nielsen, Louise Dyregaard, Osborn, Ares, Relles, Howard M., Rodrigues, José J., Bell, Juan, Srdoc, Gregor, Stockdale, Chris, Strøm, Paul A., Gardner-Watkins, Cristilyn N., Wheatley, Peter J., Wright, Duncan J., Zhou, George, Ziegler, Carl, Ricker, George R., Seager, Sara, Vanderspek, Roland, Winn, Joshua W., Jenkins, Jon M., Fausnaugh, Michael, Kunimoto, Michelle, Osborn, Hugh P., Quinn, Samuel N., Wohler, Bill
The recent discoveries of Neptune-sized ultra-short period planets (USPs) challenge existing planet formation theories. It is unclear whether these residents of the Hot Neptune Desert have similar origins to smaller, rocky USPs, or if this discrete p
Externí odkaz:
http://arxiv.org/abs/2407.04225
Autor:
Grieves, N., Bouchy, F., Armstrong, D. J., Akinsanmi, B., Psaridi, A., Ulmer-Moll, S., Frensch, Y. G. C., Helled, R., Muller, S., Knierim, H., Santos, N. C., Adibekyan, V., Battley, M. P., Unger, N., Chaverot, G., Parc, L., Bayliss, D., Dumusque, X., Hawthorn, F., Figueira, P., Keniger, M. A. F., Lillo-Box, J., Nielsen, L. D., Osborn, A., Sousa, S. G., Strom, P., Udry, S.
Hot Jupiters generally do not have nearby planet companions, as they may have cleared out other planets during their inward migration from more distant orbits. This gives evidence that hot Jupiters more often migrate inward via high-eccentricity migr
Externí odkaz:
http://arxiv.org/abs/2406.15986
Autor:
Hacker, Alejandro, Díaz, Rodrigo F., Armstrong, David J., Fernández, Jorge Fernández, Müller, Simon, Delgado-Mena, Elisa, Sousa, Sérgio G., Adibekyan, Vardan, Stassun, Keivan G., Collins, Karen A., Yee, Samuel W., Bayliss, Daniel, Bieryla, Allyson, Bouchy, François, Butler, R. Paul, Crane, Jeffrey D., Dumusque, Xavier, Hartman, Joel D., Helled, Ravit, Jenkins, Jon, Keniger, Marcelo Aron F., Lewis, Hannah, Lillo-Box, Jorge, Lund, Michael B., Nielsen, Louise D., Osborn, Ares, Osip, David, Paegert, Martin, Radford, Don J., Santos, Nuno C., Seager, Sara, Shectman, Stephen A., Srdoc, Gregor, Strøm, Paul A., Tan, Thiam-Guan, Teske, Johanna K., Vezie, Michael, Watanabe, David, Watkins, Cristilyn N., Wheatley, Peter J., Winn, Joshua N., Wohler, Bill, Ziegler, Carl
We report the discovery of two transiting planets detected by the Transiting Exoplanet Survey Satellite (TESS), TOI-2374 b and TOI-3071 b, orbiting a K5V and an F8V star, respectively, with periods of 4.31 and 1.27 days, respectively. We confirm and
Externí odkaz:
http://arxiv.org/abs/2406.12996
Autor:
Hobson, M. J., Bouchy, F., Lavie, B., Lovis, C., Adibekyan, V., Prieto, C. Allende, Alibert, Y., Barros, S. C. C., Castro-González, A., Cristiani, S., D'Odorico, V., Damasso, M., Di Marcantonio, P., Dumusque, X., Ehrenreich, D., Figueira, P., Santos, R. Génova, Hernández, J. I. González, Lillo-Box, J., Curto, G. Lo, Martins, C. J. A. P., Mehner, A., Micela, G., Molaro, P., Nunes, N. J., Palle, E., Pepe, F., Rebolo, R., Rodrigues, J., Santos, N., Sousa, S. G., Sozzetti, A., Mascareño, A. Suárez, Tabernero, H. M., Udry, S., Osorio, M. -R. Zapatero, Armstrong, D. J., Ciardi, D. R., Collins, K. A., Collins, K. I., Everett, M., Gandolfi, D., Howell, S. B., Jenkins, J. M., Kielkopf, J., Livingston, J. H., Lund, M. B., Mireles, I., Ricker, G. R., Schwarz, R. P., Seager, S., Tan, T. -G., Ting, E. B., Winn, J. N.
Publikováno v:
A&A 688, A216 (2024)
Since 2018, the ESPRESSO spectrograph at the VLT has been hunting for planets in the Southern skies via the RV method. One of its goals is to follow up candidate planets from transit surveys such as the TESS mission, particularly small planets. We an
Externí odkaz:
http://arxiv.org/abs/2406.06278