Results 91 to 100 of about 110,517 (296)

Towards understanding the stellar initial mass function [PDF]

Monthly Notices of the Royal Astronomical Society, 1992
It is suggested that the stellar initial mass function (IMF) is closely related to the geometrical structure of star-forming clouds, and that the power-law form of the upper IMF results from accretion processes in hierarchical groupings of forming stars.
openaire   +1 more source

The relationship between the prestellar core mass function and the stellar initial mass function [PDF]

Astronomy & Astrophysics, 2007
7 pages, 3 figures, A&A in ...
Goodwin, S. P., Nutter, David John, Kroupa, P., Ward-Thompson, Derek, Whitworth, Anthony Peter   +4 more
openaire   +4 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Galactic chemical evolution: stellar yields and the initial mass function [PDF]

Monthly Notices of the Royal Astronomical Society, 2015
We present a set of 144 galactic chemical evolution models applied to a Milky Way analogue, computed using four sets of low and intermediate star nucleosynthetic yields, six massive star yield compilations, and six functional forms for the initial mass function. The integrated or true yields for each combination are derived.
Gibson, Brad K., Cavichia, Oscar, Gavilán, Marta, Mollá, Mercedes   +3 more
openaire   +4 more sources

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Shaping the galaxy stellar mass function with supernova- and AGN-driven winds

, 2012
Cosmological hydrodynamical simulations of galaxy formation in representative regions of the Universe typically need to resort to subresolution models to follow some of the feedback processes crucial for galaxy formation.
Allen, Balogh, Benson, Booth, Borgani, Bouché, Bower, Bower, Boylan-Kolchin, Bruzual, Chabrier, Chen, Choi, Churazov, Cole, Cole, Crain, Croton, Davé, Davé, Di Matteo, Dolag, Ewald Puchwein, Gabor, Gonzalez, Guedes, Guo, Guo, Heckman, Hopkins, Hopkins, Hopkins, Jenkins, Katz, Klypin, Komatsu, Li, Lin, Martin, Martin, McGee, Murante, Murante, Murray, Navarro, Neto, Okamoto, Oppenheimer, Oppenheimer, Oppenheimer, Peeples, Peeples, Puchwein, Puchwein, Puchwein, Rudick, Rudnick, Salim, Salpeter, Samui, Santini, Scannapieco, Schaye, Schaye, Sijacki, Sijacki, Sommer-Larsen, Springel, Springel, Springel, Springel, Springel, Thacker, Tinker, Uhlig, Vogelsberger, Volker Springel, Weiner, Weinmann, White, Willman, Zibetti   +81 more
core   +1 more source

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

FEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman, Anna E. Lester, Brian D. Zoltowski   +2 more
wiley   +1 more source

Accessing the Host Galaxies of Long Gamma-Ray Bursts with Next-generation Telescopes

The Astrophysical Journal
We present a method to estimate the detection expectations of host galaxies of long gamma-ray bursts (LGRBs) in the grizJHKL bands. It is found that given the same limiting magnitude ${m}_{{grizJHKL},\mathrm{lim}}$ in each band, the z band produces the ...
Guang-Xuan Lan, Ye Li, Zhuo Li
doaj   +1 more source

Open clusters and the galactic disk

, 2010
It is textbook knowledge that open clusters are conspicuous members of the thin disk of our Galaxy, but their role as contributors to the stellar population of the disk was regarded as minor.
Kharchenko, Nina V., Piskunov, Anatoly E., Roeser, Siegfried, Schilbach, Elena, Scholz, Ralf-Dieter, Zinnecker, Hans   +5 more
core   +1 more source

Understanding the Stellar Initial Mass Function

, 2006
The essential features of the stellar Initial Mass Function are, rather generally, (1) a peak at a mass of a few tenths of a solar mass, and (2) a power-law tail toward higher masses that is similar to the original Salpeter function. Recent work suggests that the IMF peak reflects a preferred scale of fragmentation associated with the transition from a
openaire   +2 more sources