Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Lyra Cao"'
Autor:
Fábio Wanderley, Katia Cunha, Oleg Kochukhov, Verne V. Smith, Diogo Souto, Lyra Cao, Kevin Covey, Steven R. Majewski, Cintia Martinez, Philip S. Muirhead, Marc Pinsonneault, C. Allende Prieto, Keivan G. Stassun
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 112 (2024)
Average magnetic field measurements are presented for 62 M-dwarf members of the Pleiades open cluster, derived from Zeeman-enhanced Fe i lines in the H band. A Markov Chain Monte Carlo methodology was employed to model magnetic filling factors using
Externí odkaz:
https://doaj.org/article/039ed866462d4864873280e4f186cc50
Autor:
Javier Serna, Giovanni Pinzón, Jesús Hernández, Ezequiel Manzo-Martínez, Karina Mauco, Carlos G. Román-Zúñiga, Nuria Calvet, Cesar Briceño, Ricardo López-Valdivia, Marina Kounkel, Guy S. Stringfellow, Keivan G. Stassun, Marc Pinsonneault, Lucia Adame, Lyra Cao, Kevin Covey, Amelia Bayo, Alexandre Roman-Lopes, Christian Nitschelm, Richard R. Lane
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 68 (2024)
We developed a grid of stellar rotation models for low-mass and solar-type classical T Tauri stars (CTTS; 0.3 M _⊙ < M _* < 1.2 M _⊙ ). These models incorporate the star–disk interaction and magnetospheric ejections to investigate the evolution
Externí odkaz:
https://doaj.org/article/3f2ebec67a004852aaa455cd3837a8a2
Autor:
J. M. Joel Ong, Marc Teng Yen Hon, Melinda Soares-Furtado, Alexander P. Stephan, Jennifer van Saders, Jamie Tayar, Benjamin Shappee, Daniel R. Hey, Lyra Cao, Mutlu Yıldız, Zeynep Çelik Orhan, Sibel Örtel, Benjamin Montet, Thomas W.-S. Holoien, Joss Bland-Hawthorn, Sven Buder, Gayandhi M. De Silva, Ken C. Freeman, Sarah L. Martell, Geraint F. Lewis, Sanjib Sharma, Dennis Stello
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 42 (2024)
We report the discovery and characterization of TIC 350842552 (“Zvrk”), an apparently isolated, rapidly rotating ( P _rot ∼ 99 days) red giant observed by TESS in its southern Continuous Viewing Zone. The star’s fast surface rotation is indep
Externí odkaz:
https://doaj.org/article/bb5b471dee324e7eada5b0ab43f2da63
Autor:
Zachary R. Claytor, Jennifer L. van Saders, Lyra Cao, Marc H. Pinsonneault, Johanna Teske, Rachael L. Beaton
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 47 (2024)
The Transiting Exoplanet Survey Satellite (TESS) mission delivers time-series photometry for millions of stars across the sky, offering a probe into stellar astrophysics, including rotation, on a population scale. However, light-curve systematics rel
Externí odkaz:
https://doaj.org/article/f051ece80176451a8a73943b2c96057a
Publikováno v:
The Astrophysical Journal Letters, Vol 951, Iss 2, p L49 (2023)
Differential rotation is thought to be responsible for the dynamo process in stars like our Sun, driving magnetic activity and starspots. We report that starspot measurements in the Praesepe open cluster are strongly enhanced only for stars that depa
Externí odkaz:
https://doaj.org/article/a1f3ef419a2146b684206b49e8b9ab66
Autor:
Fábio Wanderley, Katia Cunha, Diogo Souto, Verne V. Smith, Lyra Cao, Marc Pinsonneault, C. Allende Prieto, Kevin Covey, Thomas Masseron, Ilaria Pascucci, Keivan G. Stassun, Ryan Terrien, Galen J. Bergsten, Dmitry Bizyaev, José G. Fernández-Trincado, Henrik Jönsson, Sten Hasselquist, Jon A. Holtzman, Richard R. Lane, Suvrath Mahadevan, Steven R. Majewski, Dante Minniti, Kaike Pan, Javier Serna, Jennifer Sobeck, Guy S. Stringfellow
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 90 (2023)
We present a spectroscopic analysis of a sample of 48 M-dwarf stars (0.2 M _⊙ < M < 0.6 M _⊙ ) from the Hyades open cluster using high-resolution H -band spectra from the Sloan Digital Sky Survey/Apache Point Observatory Galactic Evolution Experi
Externí odkaz:
https://doaj.org/article/3257bc78f80b4e9890b761fb84585458
Autor:
Marina Kounkel, Eleonora Zari, Kevin Covey, Andrew Tkachenko, Carlos Román Zúñiga, Keivan Stassun, Amelia M. Stutz, Guy Stringfellow, Alexandre Roman-Lopes, Jesús Hernández, Karla Peña Ramírez, Amelia Bayo, Jinyoung Serena Kim, Lyra Cao, Scott J. Wolk, Juna Kollmeier, Ricardo López-Valdivia, Bárbara Rojas-Ayala
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 266, Iss 1, p 10 (2023)
The fifth iteration of the Sloan Digital Sky Survey is set to obtain optical and near-infrared spectra of ∼5 million stars of all ages and masses throughout the Milky Way. As a part of these efforts, APOGEE and BOSS Young Star Survey (ABYSS) will o
Externí odkaz:
https://doaj.org/article/3f42ddc54e2e469180e5c0447ab3174d
Autor:
Alexander I. Smith, Eric T. Johnson, Zhi Chen, Kiran Eiden, Donald E. Willcox, Brendan Boyd, Lyra Cao, Christopher J. DeGrendele, Michael Zingale
Publikováno v:
The Astrophysical Journal, Vol 947, Iss 2, p 65 (2023)
We describe pynucastro 2.0, an open-source library for interactively creating and exploring astrophysical nuclear reaction networks. We demonstrate new methods for approximating rates and use detailed balance to create reverse rates, show how to buil
Externí odkaz:
https://doaj.org/article/7f911539b70c4d37b49fa86fb2d918e0
Autor:
Jairo A Alzate, Gustavo Bruzual, Marina Kounkel, Gladis Magris, Lee Hartmann, Nuria Calvet, Lyra Cao
Publikováno v:
Monthly Notices of the Royal Astronomical Society.
We develop statistical methods within a Bayesian framework to infer the star formation history from photometric surveys of pre-main sequence populations. Our procedures include correcting for biases due to extinction in magnitude-limited surveys, and
Autor:
Alexander I. Smith, Eric T. Johnson, Zhi Chen, Kiran Eiden, Donald E. Willcox, Brendan Boyd, Lyra Cao, Christopher J. DeGrendele, Michael Zingale
We describe pynucastro 2.0, an open source library for interactively creating and exploring astrophysical nuclear reaction networks. We demonstrate new methods for approximating rates and using detailed balance to create reverse rates, show how to bu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18dde837ad0ec0c887a85a0795876abe
http://arxiv.org/abs/2210.09965
http://arxiv.org/abs/2210.09965