Results 51 to 60 of about 197,228 (295)

Multiple views of magnetism in cool stars [PDF]

, 2012
Magnetic fields are regarded as a crucial element for our understanding of stellar physics. They can be studied with a variety of methods which provide complementary - and sometimes contradictory - information about the structure, strength and dynamics ...
Arzoumanian, Basri, Cohen, Donati, Fares, Gregory, Hale, Hallinan, Hussain, Jeffers, McIvor, Morin, Peterson, Poppenhaeger, Reiners, Reiners, Reiners, Route, Semel, Shulyak, Torres, Vidotto, Vidotto, Vogt, Walkowicz   +24 more
core   +3 more sources

The role and implications of mammalian cellular circadian entrainment

FEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

Sounding stellar cores with mixed modes

, 2013
The space-borne missions CoRoT and Kepler have opened a new era in stellar physics, especially for evolved stars, with precise asteroseismic measurements that help determine precise stellar parameters and perform ensemble astero seismology.
Belkacem, Kevin, Mosser, Benoit, Vrard, Mathieu   +2 more
core   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

FEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

The effect of Warm Dark Matter on galaxy properties: constraints from the stellar mass function and the Tully-Fisher relation

, 2013
In this paper we combine high resolution N-body simulations with a semi analytical model of galaxy formation to study the effects of a possible Warm Dark Matter (WDM) component on the observable properties of galaxies.
Aaron A. Dutton, Abazajian, Alam, Andrea V. Macciò, Bell, Bode, Boyarsky, Brooks, Bullock, Colín, Colín, Conroy, Gnedin, Götz, Kang, Kang, Kang, Klypin, Komatsu, Lacey, Leauthaud, Leauthaud, Liu, Macciò, Marchesini, McGaugh, Moore, Moster, Narayanan, Seljak, Song, Stark, Tully, Viel, Viel, Xi Kang, Zavala, Zentner   +37 more
core   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

The s Process: Nuclear Physics, Stellar Models, Observations

, 2010
Nucleosynthesis in the s process takes place in the He burning layers of low mass AGB stars and during the He and C burning phases of massive stars. The s process contributes about half of the element abundances between Cu and Bi in solar system material.
Allen, B., Aoki, W., Aoki, W., Beer, H., Beer, H., Bisterzo, S., Bisterzo, S., Borella, A., Bradley, T., Chau, L., Christlieb, N., Clayton, D., Cristallo, S., de L. Musgrove, A., Diehl, R., Dillmann, I., Dillmann, I., Dupraz, C., Edvardsson, B., F. Käppeler, F. Rau, Freytag, B., Fürst, E., Gallino, R., Goriely, S., Gratton, R., Guber, K., Herwig, F., Herwig, F., Hill, V., Jehin, E., Koning, A., Käppeler, F., Lambert, D., Langer, N., Lisowski, P., Macklin, R., Macklin, R., Macklin, R., Macklin, R., Meusel, O., Perey, F., Prantzos, N., Péquignot, D., R. Gallino, Ratzinger, U., Rau, F., S. Bisterzo, Sadakane, K., Spencer, R., Straniero, O., Suda, T., Tain, J., Thielemann, F.-K., Van Winckel, H., Wako Aoki, Ward, R., Weigert, A., Wisshak, K., Woodward, P.   +59 more
core   +1 more source

Physics of Stellar Atmospheres [PDF]

Nature, 1956
Physik der Sternatmospharen, mit besonderer Berucksichtigung der Sonne Zweite Auflage. Von Prof. A. Unsold. Pp. ix + 866. (Berlin: Springer-Verlag, 1955.) 168 D.M.
openaire   +1 more source

Clusters: Age Scales for Stellar Physics [PDF]

EAS Publications Series, 2016
Ages are key to truly understand a large plethora of astrophysical phenomena. On the other hand, stellar clusters are open windows to understand stellar evolution, specifically, the change with time and mass of different stellar properties. As such, they are our laboratories where different theories can be tested, but without accurate ages, our ...
openaire   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source