Results 111 to 120 of about 130,683 (338)

Long-lived, long-period radial velocity variations in Aldebaran: A planetary companion and stellar activity [PDF]

, 2015
A. P. Hatzes, W. D. Cochran, M. Endl, E. W. Guenther, P. MacQueen, M. Hartmann, M. Zechmeister, I. Han, B.-C. Lee, G. A. H. Walker, S. Yang, A. M. Larson, K.-M. Kim, D. E. Mkrtichian,, M. Döllinger, A. E. Simon,, L. Girardi   +16 more
openalex   +1 more source

Correcting Exoplanet Transmission Spectra for Stellar Activity with an Optimized Retrieval Framework

The Astrophysical Journal
The chromatic contamination that arises from photospheric heterogeneities, e.g., spots and faculae on the host star presents a significant noise source for exoplanet transmission spectra.
Alexandra Thompson, Alfredo Biagini, Gianluca Cracchiolo, Antonino Petralia, Quentin Changeat, Arianna Saba, Giuseppe Morello, Mario Morvan, Giuseppina Micela, Giovanna Tinetti   +9 more
doaj   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source

Starspot Area Coverage: Correlation with Age and Spectral Type in FGK and M Stars

The Astrophysical Journal Letters
Starspots, analogous to sunspots, are surface manifestations of stellar magnetic activity. Their study provides crucial insights into stellar dynamo processes and the evolution of magnetic phenomena.
Alexandre Araújo, Ciria Lima, Fabian Menezes, Adriana Valio   +3 more
doaj   +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

Detection of secondary eclipses of WASP-10b and Qatar-1b in the Ks band and the correlation between Ks-band temperature and stellar activity. [PDF]

, 2016
P. Cruz, D. Barrado, J. Lillo-Box, Marcos Hernandez Díaz, Mercedes López‐Morales, Jayne Birkby, Jonathan J. Fortney, S. T. Hodgkin   +7 more
openalex   +1 more source

First Comparison of FLARIX Simulations with MSDP Observation of the C1.6 Solar Flare in the Hα Line of Hydrogen

The Astrophysical Journal
The primary objective of this study is to develop a time-dependent model of the flaring atmosphere based on observational data. Here, we present, for the first time, a comparison between numerical simulations of the flaring emission, specifically ...
Krzysztof Radziszewski, Petr Heinzel, Jana Kašparová, Michalina Litwicka, Arkadiusz Berlicki, Paweł Rudawy, Robert Falewicz   +6 more
doaj   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Deriving the radial-velocity variations induced by stellar activity from high-precision photometry [PDF]

, 2011
A. F. Lanza, I. Boisse, F. Bouchy, A. S. Bonomo, C. Moutou   +4 more
openalex   +1 more source

Magnetic Activity of Millions of G-type Stars Based on the LAMOST DR10 Low-resolution Spectral and TESS Light-curve Surveys and the Future CSST Survey

The Astrophysical Journal Supplement Series
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) data release 10 (DR10) provides over 3 million G-type stellar spectra, which are important for the study of chromospheric activity of solar-like stars.
Tianhao Su, Li-yun Zhang, Liu Long, Prabhakar Misra, Xianming L. Han, Gang Meng, ZiLu Yang, Qingfeng Pi   +7 more
doaj   +1 more source