Results 11 to 20 of about 694,028 (301)

C3PO. III. On the Lithium Signatures following Planet Engulfment by Stars

The Astrophysical Journal
Planet engulfment has been identified as one of the mechanisms for enhancing lithium abundance in stars. However, comprehensive investigations into lithium signatures following such events remain limited.
Qinghui Sun, Yuan-Sen Ting, Fan Liu, Sharon Xuesong Wang, Barbara J. Anthony-Twarog, Bruce A. Twarog, Jia-Yi Yang, Di-Chang Chen, Amanda I. Karakas, Ji-Wei Xie, David Yong   +10 more
doaj   +2 more sources

Lithium Abundance of the Solar-Type Superflare Stars [PDF]

Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 2017
{"references": ["Maehara, H., et al. 2012, Nature, 485, 478", "Shibayama, T., et al. 2013, ApJS, 209, 5", "Notsu, Y., et al. 2015, PASJ, 67, 32", "Notsu, Y., et al. 2015, PASJ, 67, 33", "Honda, S., et al. 2015, PASJ 67, 85", "Herbig, G. H. 1965, ApJ, 141, 588", "Skumanich, A. 1972, ApJ, 171, 565", "Mishenina, T. V., et al.
Honda, Satoshi, Notsu, Yuta, Maehara, Hiroyuki, Notsu, Shota, Shibayama, Takuya, Nogami, Daisaku, Shibata, Kazunari   +6 more
openaire   +2 more sources

The C-terminal domain of yeast Arginyltransferase1 is essential for its catalytic activity. [PDF]

FEBS Open Bio
Arginyltransferase 1 (Ate1), a eukaryotic enzyme, catalyses arginylation, transferring arginine from tRNA‐Arg to the amino terminus of the target protein. Overexpression of Ate1 in yeast is lethal and is dependent on arginylation. This study elucidates how mutations in the cofactor‐binding and active site of Ate1 and truncation of its structural ...
Yadav VK, Shweta S, Malhotra M, Maurya V, Kumar A.   +4 more
europepmc   +2 more sources

The GALAH survey: A census of lithium-rich giant stars [PDF]

, 2021
We investigate the properties of 1262 red giant stars with high photospheric abundances of lithium observed by the GALAH and K2-HERMES surveys, and discuss them in the context of proposed mechanisms for lithium enrichment and redepletion in giant stars ...
Buder, Sven, Stello, Dennis, Bland-Hawthorn, Joss, De Silva, Gayandhi M., Lind, Karin,, Freeman, Ken C., Wittenmyer, Rob, Lind, Karin, Hon, Marc, Kos, Janez, Zwitter, Tomaž, Campbell, Simon W., Balasubramaniam, Adithya G., Ting, Yuan-Sen, Martell, Sarah L., Hayden, Michael, Sharma, Sanjib, Asplund, Martin, Montet, Benjamin, Simpson, Jeffrey D., Zucker, Daniel B., Lewis, Geraint F., Horner, Jonathan, Čotar, Klemen, Freeman, Kenneth, Simpson, Jeffrey D, Martell, Sarah, De Silva, Gayandhi M, Balasubramaniam, Adithya G, Sarah L Martell, Jeffrey D Simpson, Daniel B Zucker, Martin Asplund, Gayandhi M De Silva, Adithya G Balasubramaniam, Benjamin Montet, Sven Buder, Janez Kos, Rob Wittenmyer, Yuan-Sen Ting, Geraint F Lewis, Simon W Campbell, Karin Lind, Ken C Freeman, Dennis Stello, Michael Hayden, Tomaž Zwitter, Jonathan Horner, Klemen Čotar, Marc Hon, Joss Bland-Hawthorn, Sanjib Sharma   +51 more
core   +1 more source

The GALAH survey : A new constraint on cosmological lithium and Galactic lithium evolution from warm dwarf stars [PDF]

, 2020
Lithium depletion and enrichment in the cosmos is not yet well understood. To help tighten constraints on stellar and Galactic evolution models, we present the largest high-resolution analysis of Li abundances A(Li) to date, with results for over $100 ...
Buder, Sven, Simpson, Jeffrey D.,, Galah Collaboration, ., Gao, Xudong,, Horner, Jonathan,, Wittenmyer, Robert A., Ting, Yuan-Sen,, Traven, Gregor, Sharma, Sanjib, Hayden, Michael R.,, Munari, Ulisse, Sharma, Sanjib,, Munari, Ulisse,, Stello, Dennis, Campbell, Simon W.,, Casey, Andrew R., Freeman, Ken C.,, Lind, Karin,, Lind, Karin, Freeman, Ken C., Ting, Yuan Sen, Lewis, Geraint F.,, Asplund, Martin, Amarsi, Anish,, Amarsi, Anish M.,, De Silva, Gayandhi M.,, Lund University., Lewis, Geraint F., Martell, Sarah L.,, Zwitter, Tomaz,, Bland-Hawthorn, Joss, Stello, Dennis,, Nordlander, Thomas,, Ting, Yuan Sen,, Casey, Andrew R.,, Campbell, Simon W., Hayden, Michael R., Bland-Hawthorn, Joss,, Simpson, Jeffrey D., Nordlander, Thomas, Zwitter, Toma,, Amarsi, Anish M., Zucker, Daniel B., De Silva, Gayandhi M., Zwitter, Toma, Wittenmyer, Robert A.,, Zwitter, Tomaž, Ting, Yuan-Sen, Martell, Sarah L., Buder, Sven,, Traven, Gregor,, Gao, Xudong, Asplund, Martin,, Horner, Jonathan, Zucker, Daniel B.,, Amarsi, Anish M, Freeman, Kenneth, Campbell, Simon W, Casey, Andrew, Hayden, Michael, De Silva, Gayandhi M   +60 more
core   +1 more source

Stabilizing carbon-lithium stars

Physical Chemistry Chemical Physics, 2011
We have explored in silico the potential energy surfaces of the C(5)Li(n)(n-6) (n = 5, 6, and 7) clusters using the Gradient Embedded Genetic Algorithm (GEGA) and other computational strategies. The most stable forms of C(5)Li(5)(-) and C(5)Li(6) are two carbon chains linked by two lithium atoms in a persistent seven membered ring capped by two Li ...
Perez-Peralta, Nancy, Contreras, Maryel, Tiznado, William, Stewart, John, Donald, Kelling J., Merino, Gabriel   +5 more
openaire   +4 more sources

Lithium In Population II Stars [PDF]

Highlights of Astronomy, 1995
AbstractSince the work of Spite & Spite (1982), halo main sequence turn-off stars have usually been considered a site where Li synthesized in the Big-Bang is wholly preserved and uncontaminated by other Li sources. However, the interpretation of halo dwarf Li abundances has become more complex as new samples of halo star Li I observations have ...
openaire   +1 more source

Abundances of lithium in solar neighborhood stars. [PDF]

, 2022
In this work, I have examined Lithium abundance in stars‘ atmospheres in solar neighborhood. FKG type spectrum stars of the northern sky with luminosity V = 2,28 ± 0,54 compared to = 0.83 ± 0,47 in giant stars.
Jakavonytė, Kristina,
core  

Lithium 6104 Å in Population II stars [PDF]

Astronomy & Astrophysics, 2002
We have obtained echelle spectroscopy of 14 Population II objects selected from those previously observed by Bonifacio & Molaro (1997). For one object, HD 140283, we obtained exquisite data with the High Dispersion Spectrograph on the Subaru Telescope, with S/N exceeding 1000 per 0.018A pixel.
Ford, A., Jeffries, R.D., Smalley, B., Ryan, S.G., Aoki, W., Kawanomoto, S., James, D.J., Barnes, J.R.   +7 more
openaire   +3 more sources

The evolution of lithium in FGK dwarf stars [PDF]

, 2021
We investigate two topics regarding solar mass FGK-type stars, the lithium-rotation connection (LRC), and the existence of the ‘lithium desert’. We determine the minimum critical rotation velocity (v sin i), related with the LRC separating slow from ...
C. Cifuentes, C. Chavero, Llorente De Andrés, F., R. de la Reza, S. Roca-Fàbrega, Chavero, Carolina Andrea, Roca Fábrega, Santi, F. Llorente de Andrés, Cifuentes, C., De La Reza, R., Roca Fàbrega, S., Reza, R. de la, Chavero, C.   +12 more
core   +1 more source