Results 1 to 10 of about 219,464 (277)

Chemical element transport in stellar evolution models [PDF]

Royal Society Open Science, 2017
Stellar evolution computations provide the foundation of several methods applied to study the evolutionary properties of stars and stellar populations, both Galactic and extragalactic.
Maurizio Salaris, Santi Cassisi
doaj   +6 more sources

A new 12C+12C reaction rate: Impact on stellar evolution [PDF]

EPJ Web of Conferences, 2023
Among the reactions driving stellar evolution during carbon burning, 12C + 12C fusion provides the key ingredients. This system reveals many resonances, but also regions with suppressed fusion cross-sections.
Monpribat E., Choplin A., Martinet S., Courtin S., Heine M., Adsley P., Curien D., Dumont T., Ekström S., Jenkins D.G., Moukaddam M., Nippert J., Tsiatsiou S., Meynet G.   +13 more
doaj   +1 more source

A Search for Stellar Siblings of the ∼200 Myr TOI-251 b Planetary System

The Astrophysical Journal, 2023
Young planets (
Qinghui Sun, Sharon Xuesong Wang, Andrew W. Mann, Benjamin M. Tofflemire, Adam L. Kraus, Tianjun Gan, Madyson G. Barber   +6 more
doaj   +1 more source

Intriguing Revelations from Lithium, Beryllium, and Boron

The Astrophysical Journal, 2023
This is a report on some highlights of research on the rare light elements, lithium (Li), beryllium (Be), and boron (B), that were presented at my Henry Norris Russell Lecture in 2020 January.
Ann Merchant Boesgaard
doaj   +1 more source

Disentangling Stellar Age Estimates from Galactic Chemodynamical Evolution

The Astrophysical Journal, 2023
Stellar ages are key for determining the formation history of the Milky Way, but are difficult to measure precisely. Furthermore, methods that use chemical abundances to infer ages may entangle the intrinsic evolution of stars with the chemodynamical ...
Jeff Shen, Joshua S. Speagle, J. Ted Mackereth, Yuan-Sen Ting, Jo Bovy   +4 more
doaj   +1 more source

The Mass-Metallicity and Luminosity-Metallicity Relation from DEEP2 at z ~ 0.8 [PDF]

, 2011
We present the mass-metallicity (MZ) and luminosity-metallicity (LZ) relations at z ~ 0.8 from ~1350 galaxies in the Deep Extragalactic Evolutionary Probe 2 (DEEP2) survey.
Abazajian, Ažusienis, Baldry, Bell, Blanton, Brooks, Bundy, Buser, Calzetti, Carollo, Coil, Conroy, Cowie, Drory, Erb, F. Bresolin, Faber, Ferland, Garnett, Garnett, H. J. Zahid, Hogg, Hoversten, Ilbert, Jansen, Kewley, Kewley, Kewley, Kobulnicky, Kobulnicky, Kobulnicky, Kobulnicky, Kobulnicky, L. J. Kewley, Larson, Lequeux, Markwardt, Melbourne, Meurer, Mouchine, Noeske, Noeske, Osterbrock, Pagel, Pagel, Pettini, Salzer, Savaglio, Shapley, Shapley, Simard, Strateva, Tremonti, van Dokkum, Weiner, Weiner, Willmer   +56 more
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Fundamentals of stellar evolution and nucleosynthesis [PDF]

EPJ Web of Conferences
The theory of stellar structure and evolution plays a pivotal role in modern astrophysics. Stellar evolution calculations are used to determine the ages and, to a lesser extent, distances of stars, which are critical to our knowledge of the history and ...
Vescovi Diego
doaj   +1 more source

Is there a mass discrepancy in the Cepheid binary OGLE-LMC-CEP0227? [PDF]

, 2011
Context. The Cepheid mass discrepancy, the difference between masses predicted from stellar evolution and stellar pulsation calculations, is a challenge for the understanding of stellar astrophysics. Recent models of the eclipsing binary Cepheid OGLE-LMC-
Bono, Bono, Caputo, Cassisi, Clausen, Cox, de Jager, Dupree, Evans, Evans, Evans, Evans, Fiorentino, H. R. Neilson, Heger, Hunter, Keller, Keller, Kovtyukh, Kudritzki, Lovekin, Meynet, Morel, N. Langer, Neilson, Neilson, Pietrzyński, Pietrzyński, Romaniello, Romaniello, Sandberg Lacy, Sasselov, Sasselov, Stobie, Turner, Valle, Yoon   +36 more
core   +1 more source

The Power of Asteroseismology for Early Stellar Evolution

Frontiers in Astronomy and Space Sciences, 2019
Stars are the building blocks of planetary systems, clusters, associations, and galaxies. The evolution of stars is driven by physical processes in their interiors making theory of stellar interior structure and evolution an important ingredient of ...
Konstanze Zwintz
doaj   +1 more source

Linking the formation and fate of exo-Kuiper belts within solar system analogues [PDF]

, 2020
Escalating observations of exo-minor planets and their destroyed remnants both passing through the solar system and within white dwarf planetary systems motivate an understanding of the orbital history and fate of exo-Kuiper belts and planetesimal discs.
Cai, Maxwell X., Dotti, Francesco Flammini, Kouwenhoven, M. B. N., McDonald, Catriona H., Mustill, Alexander J., Reichert, Katja, Shannon, Andrew, Spurzem, Rainer, Veras, Dimitri, Zwart, Simon Portegies   +9 more
core   +3 more sources