Zobrazeno 1 - 10
of 861
pro vyhledávání: '"P. Feiden"'
The helium abundances in the multiple populations that are now known to comprise all closely studied Milky Way globular clusters are often inferred by fitting isochrones generated from stellar evolutionary models to globular cluster photometry. It is
Externí odkaz:
http://arxiv.org/abs/2411.17562
Autor:
Hinse, T. C., Baştürk, O., Southworth, J., Feiden, G. A., Tregloan-Reed, J., Kostov, V. B., Livingston, J., Esmer, E. M., Yılmaz, Mesut, Yalçınkaya, Selçuk, Torun, Şeyma, Vos, J., Evans, D. F., Morales, J. C., Wolf, J. C. A., Olsen, E. H., Clausen, J. V., Helt, B. E., Lý, C. T. K., Stahl, O., Wells, R., Herath, M., Jørgensen, U. G., Dominik, M., Skottfelt, J., Peixinho, N., Longa-Peña, P., Kim, Y., Kim, H. -E., Yoon, T. S., Alrebdi, H. I., Zotos, E. E.
The binary star NY Hya is a bright, detached, double-lined eclipsing system with an orbital period of just under five days with two components each nearly identical to the Sun and located in the solar neighbourhood. The objective of this study is to
Externí odkaz:
http://arxiv.org/abs/2404.08594
Determining the precise ages of young (tens to a few hundred Myr) kinematic (``moving") groups is important for placing star, protoplanetary disk, and planet observations on an evolutionary timeline. The nearby $\sim$25 Myr-old $\beta$ Pictoris Movin
Externí odkaz:
http://arxiv.org/abs/2312.15792
The field of image synthesis has made tremendous strides forward in the last years. Besides defining the desired output image with text-prompts, an intuitive approach is to additionally use spatial guidance in form of an image, such as a depth map. I
Externí odkaz:
http://arxiv.org/abs/2312.06573
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
Age is a stellar parameter that is both fundamental and difficult to determine. Among middle-aged M dwarfs, the most prolific hosts of close-in and detectable exoplanets, gyrochronology is the most promising method to assign ages, but requires calibr
Externí odkaz:
http://arxiv.org/abs/2301.12109
Publikováno v:
SciPost Phys. Core 7, 056 (2024)
We develop a self-supervised method for density-based anomaly detection using contrastive learning, and test it using event-level anomaly data from CMS ADC2021. The AnomalyCLR technique is data-driven and uses augmentations of the background data to
Externí odkaz:
http://arxiv.org/abs/2301.04660
Autor:
Wood, Mackenna L., Mann, Andrew W., Barber, Madyson G., Bush, Jonathan L., Kraus, Adam L., Tofflemire, Benjamin M., Vanderburg, Andrew, Newton, Elisabeth R., Feiden, Gregory A., Zhou, George, Bouma, Luke G., Quinn, Samuel N., Armstrong, David J., Osborn, Ares, Adibekyan, Vardan, Mena, Elisa Delgado, Sousa, Sergio G., Gagné, Jonathan, Fields, Matthew J., Milburn, Reilly P., Thao, Pa Chia, Schmidt, Stephen P., Gnilka, Crystal L., Howell, Steve B., Law, Nicholas M., Ziegler, Carl, Briceño, César, Ricker, George R., Vanderspek, Roland, Latham, David W., Seager, Sara, Winn, Joshua N., Jenkins, Jon M., Schlieder, Joshua E., Osborn, Hugh P., Twicken, Joseph D., Ciardi, David R., Huang, Chelsea X.
We report the discovery and characterization of a nearby (~ 85 pc), older (27 +/- 3 Myr), distributed stellar population near Lower-Centaurus-Crux (LCC), initially identified by searching for stars co-moving with a candidate transiting planet from TE
Externí odkaz:
http://arxiv.org/abs/2212.03266
Autor:
Gaidos, Eric, Mann, Andrew W., Rojas-Ayala, Bárbara, Feiden, Gregory A., Wood, Mackenna L., Narayanan, Suchitra, Ansdell, Megan, Jacobs, Tom, LaCourse, Daryll
Studies of T Tauri disks inform planet formation theory; observations of variability due to occultation by circumstellar dust are a useful probe of unresolved, planet-forming inner disks, especially around faint M dwarf stars. We report observations
Externí odkaz:
http://arxiv.org/abs/2204.14163
Main-sequence stars with convective envelopes often appear larger and cooler than predicted by standard models of stellar evolution for their measured masses. This is believed to be caused by stellar activity. In a recent study, accurate measurements
Externí odkaz:
http://arxiv.org/abs/2112.12155