Results 101 to 110 of about 128,153 (317)

Constraining the Variability and Binary Fraction of Galactic Center Young Stars

, 2016
We present constraints on the variability and binarity of young stars in the central 10 arcseconds (~0.4 pc) of the Milky Way Galactic Center (GC) using Keck Adaptive Optics data over a 12 year baseline.
Chappell, Samantha, Do, Tuan, Gautam, Abhimat K., Ghez, Andrea M., Lu, Jessica R., Morris, Mark R., Sakai, Shoko, Sitarski, Breann N., Witzel, Gunther   +8 more
core   +2 more sources

Phase II of the LAMOST-Kepler/K2 Survey. II. Time Domain of Medium-resolution Spectroscopic Observations from 2018 to 2023

The Astrophysical Journal Supplement Series
The LAMOST-Kepler/K2 Medium-Resolution Spectroscopic Survey (LK-MRS) conducted time-domain (TD) medium-resolution spectroscopic observations of 20 LAMOST plates in the Kepler and K2 fields from 2018 to 2023, a phase designated as LK-MRS-I.
Mingfeng Qin, Jian-Ning Fu, Weikai Zong, Peter De Cat, Antonio Frasca, Tianqi Cang, Jiangtao Wang, Jianrong Shi, Ali Luo, Haotong Zhang, Hongliang Yan, J. Molenda-Żakowicz, R. O. Gray, Jiaxin Wang   +13 more
doaj   +1 more source

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source

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

Rotation Periods of Candidate Single Late-M Dwarfs in TESS

The Astronomical Journal
Recent studies suggest that the angular momentum evolution of late-M and brown dwarfs differs from the well-known spin-down evolution of hotter stars. Characterizing the distribution of rotation periods of these objects in the solar neighborhood can help
Samantha Lambier, Stanimir Metchev, Paulo Miles-Páez, Leslie Moranta, Dakota Wolfe, Joelene Hales, Jeffrey Martinovic   +6 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

Young Stellar Objects in the Carina Nebula: Near-infrared Variability and Spectroscopy

The Astronomical Journal
We present a catalog of 652 young stellar objects (YSOs) in the Carina star-forming region. The catalog was constructed by combining near-infrared K _S -band variability from the VISTA Variables in the Vía Láctea eXtended survey and medium-resolution H ...
Jura Borissova, Radostin Kurtev, Josemanuel Escobar, Javier Alonso-García, Nicolas Medina, Javier Osses, Zhen Guo, Philip W. Lucas, Michael Kuhn, Dante Minniti, Kevin R. Covey, Roberto K. Saito, Francisco Förster   +12 more
doaj   +1 more source

Small Telescope Exoplanet Transit Surveys: XO

, 2017
The XO project aims at detecting transiting exoplanets around bright stars from the ground using small telescopes. The original configuration of XO (McCullough et al. 2005) has been changed and extended as described here.
DL Pollacco, O Tamuz, PW Sullivan
core   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

ZTF IC 10 Variable Catalog

The Astrophysical Journal Supplement Series
To study how massive variable stars affect their environment, we search for variability among Zwicky Transient Facility (ZTF) sources located within the optical extent of the nearby starburst galaxy IC 10.
Zehao Jin, Joseph D. Gelfand
doaj   +1 more source