Results 81 to 90 of about 4,355,728 (290)

The pre-Hayashi phase of stellar evolution [PDF]

, 1968
Structure and evolution of protostellar disks and outer rings in stellar evolution prior to Hayashi ...
Cameron, A. G. W.
core  

Investigation of [KSF2015] 1381-19L, a WC9-type Star in the High-extinction Galactic Region

The Astrophysical Journal
We report on a multiwavelength study of the Wolf–Rayet star [KSF2015] 1381-19L, which is located in the solar metallicity region ( Z = 0.014) of the Milky Way, strongly obscured by interstellar dust.
Subhajit Kar, Ramkrishna Das, Tapas Baug
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

The Dartmouth Stellar Evolution Database [PDF]

, 2008
The ever-expanding depth and quality of photometric and spectroscopic observations of stellar populations increase the need for theoretical models in regions of age-composition parameter space that are largely unexplored at present.
Chaboyer, Brian, Dotter, Aaron, Jevremović, Darko, Kostov, Veselin   +3 more
core   +1 more source

The Factory and the Beehive. V. Chromospheric and Coronal Activity and Its Dependence on Rotation in Praesepe and the Hyades

The Astrophysical Journal
Low-mass (≲1.2 M _⊙ ) main-sequence stars lose angular momentum over time, leading to a decrease in their magnetic activity. The details of this rotation–activity relation remain poorly understood, however.
Alejandro Núñez, Marcel A. Agüeros, Jason L. Curtis, Kevin R. Covey, Stephanie T. Douglas, Sabine R. Chu, Stanislav DeLaurentiis, Minzhi (Luna) Wang, Jeremy J. Drake   +8 more
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Tracing kinematic (mis)alignments in CALIFA merging galaxies : Stellar and ionized gas kinematic orientations at every merger stage [PDF]

, 2015
J.M.A. and V.W. acknowledge support from the European Research Council Starting Grant (SEDmorph; P.I. V. Wild).We present spatially resolved stellar and/or ionized gas kinematic properties for a sample of 103 interacting galaxies, tracing all merger ...
Ziegler, Katharina B., Bekeraitė, S., D. Mast, Verdes-Montenegro, L., Mcintosh, D., Monreal-Ibero, A., González Delgado, R. M., Aguerri, J., Sánchez, S. F., Lyubenova, M., Kehrig, C., J. Falcón-Barroso, Vílchez, J., Sanchez, Sébastien, García-Benito, R., D. H. McIntosh, J. K. Barrera-Ballesteros, G. van de Ven, Ziegler, B., del Olmo, A., Wild, V., González Delgado, R., Barrera-Ballesteros, J., B. García-Lorenzo, R. García-Benito, García-Lorenzo, B., Méndez-Abreu, J., V. Wild, Cortijo-Ferrero, C., Bomans, D. J., J. Méndez-Abreu, A. Monreal-Ibero, B. Husemann, Iglesias-Paramo, J., Marquez, I., Mast, Damian, Bland-Hawthorn, J., L. Verdes-Montenegro, van de Ven, G., Marino, R. A., R. M. González Delgado, C. J. Walcher, M. Lyubenova, A. del Olmo, Mast, D., I. Marquez, S. Bekeraitė, McIntosh, D. H., Husemann, B., Barrera-Ballesteros, J.K., Aguerri, J. A. L., J. A. L. Aguerri, Barrera-Ballesteros, J. K., Marino, R., J. M. Vílchez, J. Iglesias-Paramo, Marino, R.A., D. J. Bomans, J. Bland-Hawthorn, Walcher, C. J., McIntosh, D.H., R. A. Marino, B. Ziegler, Walcher, C., S. F. Sánchez, Bomans, D., C. Kehrig, Vílchez, J. M., J. Masegosa, Falcón-Barroso, J., Masegosa, J., C. Cortijo-Ferrero, Márquez, Isabel, Falcón-Barroso, Jesús, Sánchez, S.F., García-Benito, Rubén, Aguerri, J.A.L., Cortijo Ferrero, Clara, Barrera-Ballesteros, Jorge K., Olmo, Ascensión del, González Delgado, Rosa M., Marino, Raffaella Anna, Masegosa, Josefa, Verdes-Montenegro, Lourdes, Vílchez Medina, José Manuel, otros, ..., Monreal-Ibero, Ana, Walcher, C.J., Wild, V.; id_orcid   +88 more
core   +1 more source

Evolution and Final Fate of Solar Metallicity Stars in the Mass Range 7–15 M ⊙. I. The Transition from Asymptotic Giant Branch to Super-AGB Stars, Electron Capture, and Core-collapse Supernova Progenitors

The Astrophysical Journal Supplement Series
According to a standard initial mass function, stars in the range 7–12 M _⊙ constitute ∼50% (by number) of the stars more massive than ∼7 M _⊙ , but in spite of this, their evolutionary properties, and in particular their final fate, are still scarcely ...
Marco Limongi, Lorenzo Roberti, Alessandro Chieffi, Ken’ichi Nomoto   +3 more
doaj   +1 more source

Galaxy interactions in void substructures: Morphology and stellar populations of two triplets from CAVITY

Astronomy & Astrophysics
Context. Cosmic voids, vast, underdense regions of the Universe, serve as unique laboratories for studying galaxy evolution in isolation. Within these voids, galaxy triplets, rare systems of three close galaxies, provide crucial insights into how local ...
Azevedo G. M., Chies-Santos A. L., Riffel R., Perez I., Ferrari F., de Souza R. S., Argudo-Fernandéz M., Bidaran B.   +7 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source