Zobrazeno 1 - 10
of 284
pro vyhledávání: '"Lu, Yuxi"'
Autor:
Lu, Yuxi, Colman, Isabel L., Sayeed, Maryum, Amard, Louis, Buder, Sven, Manea, Catherine, Hattori, Soichiro, Pinsonneault, Marc H., Price-Whelan, Adrian M., Bedell, Megan, Nidever, David, Johnson, Jennifer A., Ness, Melissa, Angus, Ruth, Claytor, Zachary R., Horta, Danny, Behmard, Aida
The existence of high-$\alpha$ stars with inferred ages < 6 Gyr has been confirmed recently with large spectroscopic and photometric surveys. However, stellar mergers or binary interactions can induce properties associated with young ages, such as hi
Externí odkaz:
http://arxiv.org/abs/2410.02962
Autor:
Colman, Isabel L., Angus, Ruth, David, Trevor, Curtis, Jason, Hattori, Soichiro, Lu, Yuxi Lucy
For ongoing studies of the role of rotation in stellar evolution, we require large catalogs of rotation periods for testing and refining gyrochronology. While there is a wealth of data from the Kepler and K2 missions, TESS presents both an opportunit
Externí odkaz:
http://arxiv.org/abs/2402.14954
Gyrochronology, the field of age-dating stars using mainly their rotation periods and masses, is ideal for inferring the ages of individual main-sequence stars. However, due to the lack of physical understanding of the complex magnetic fields in star
Externí odkaz:
http://arxiv.org/abs/2310.14990
Autor:
Lu, Yuxi
Galactic Archaeology aims to understand the formation history of the Milky Way (MW). Observations from large spectroscopic and photometric surveys in the recent over the last decade have revolutionized this field. Many substructures and stellar popul
Autor:
Cunningham, Emily C., Hunt, Jason A. S., Price-Whelan, Adrian M., Johnston, Kathryn V., Ness, Melissa K., Lu, Yuxi, Escala, Ivanna, Stelea, Ioana A.
The stellar stream connected to the Sagittarius (Sgr) dwarf galaxy is the most massive tidal stream that has been mapped in the Galaxy, and is the dominant contributor to the outer stellar halo of the Milky Way. We present metallicity maps of the Sgr
Externí odkaz:
http://arxiv.org/abs/2307.08730
The importance of the existence of a radiative core in generating a solar-like magnetic dynamo is still unclear. Analytic models and magnetohydrodynamic simulations of stars suggest the thin layer between a star's radiative core and its convective zo
Externí odkaz:
http://arxiv.org/abs/2306.09119
Autor:
Lu, Yuxi, Minchev, Ivan, Buck, Tobias, Khoperskov, Sergey, Steinmetz, Matthias, Libeskind, Noam, Cescutti, Gabriele, Freeman, Ken C., Ratcliffe, Bridget
Stars move away from their birthplaces over time via a process known as radial migration, which blurs chemo-kinematic relations used for reconstructing the Milky Way (MW) formation history. To understand the true time evolution of the MW, one needs t
Externí odkaz:
http://arxiv.org/abs/2212.04515
The intermediate period gap, discovered by Kepler, is an observed dearth of stellar rotation periods in the temperature-period diagram at $\sim$ 20 days for G dwarfs and up to $\sim$ 30 days for early-M dwarfs. However, because Kepler mainly targeted
Externí odkaz:
http://arxiv.org/abs/2210.06604
Recovering the birth radii of observed stars in the Milky Way is one of the ultimate goals of Galactic Archaeology. One method to infer the birth radius and the evolution of the ISM metallicity assumes a linear relation between the ISM metallicity wi
Externí odkaz:
http://arxiv.org/abs/2205.00340
Autor:
David, Trevor J., Angus, Ruth, Curtis, Jason L., van Saders, Jennifer L., Colman, Isabel L., Contardo, Gabriella, Lu, Yuxi, Zinn, Joel C.
We combine stellar surface rotation periods determined from NASA's Kepler mission with spectroscopic temperatures to demonstrate the existence of pileups at the long-period and short-period edges of the temperature-period distribution for main-sequen
Externí odkaz:
http://arxiv.org/abs/2203.08920