Results 81 to 90 of about 13,442,946 (252)

Stellar Mass Segregation in Dark Matter Halos

The Astrophysical Journal
We study the effect of stellar mass segregation driven by collisional relaxation within the potential well of a smooth dark matter halo. This effect is of particular relevance for old stellar systems with short crossing times, where small collisional ...
Raphaël Errani, Jorge Peñarrubia, Matthew G. Walker   +2 more
doaj   +1 more source

The microbiome in human skin aging

FEBS Letters, EarlyView.
Age‐related skin changes encompass the well‐known visible phenotypic alterations, together with microbiome dysbiosis and a series of molecular aging hallmarks. These hallmarks characterize not only a fully stablished aged phenotype but also the skin aging process itself.
Manuel Huerta Arana, Cornelia Wiegand, Omid Omrani, Mario Fabri   +3 more
wiley   +1 more source

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
West, Richard G., Pollacco, Don, M. Gallaway, Street, R. A., Horne, K. (Keith), Kane, S. R., Christian, Damian Joseph, D. J. Christian (7603835), Hellier, Coel, Enoch, B., Nicholas, J. P., D. Pollacco (7603205), Irwin, J., Skillen, I., B. Enoch (7603838), West, R. G., R. A. Street, D. J. Christian, T. A. Lister (7603856), Irwin, Jonathan, K. Horne, Ryans, R., C. A. Haswell, D. M. Wilson (2428792), Wilson, D. M., Christian, D. J., J. P. Nicholas (7614728), S. R. Kane (7603853), S. R. Kane, Haswell, C. A., J. P. Nicholas, B. Enoch, C. Hellier (7603562), Norton, A. J., W. I. Clarkson, R. G. West, Lister, T. A., W. I. Clarkson (7612619), West, R .G., J. Irwin, Gallaway, M., T. A. Lister, Collier Cameron A (7614731), Pollacco, D., Parley, N., K. Horne (7603850), R. Ryans, C. A. Haswell (7603844), P. J. Wheatley (7590065), Hellier, C., Norton, Andrew J., R. Ryans (7612838), N. Parley, D. M. Wilson, Parley, N. R., I. Skillen (7601975), A. J. Norton (7603859), Horne, Keith Douglas, Horne, K. D., I. Skillen, R. G. West (7602272), A. Collier Cameron, J. Irwin (7606340), P. J. Wheatley, C. Hellier, R. A. Street (7603868), M. Gallaway (7614725), N. Parley (7603862), Cameron, Andrew Collier, Collier Cameron, A., Clarkson, W. I., Kane, Sharad R., Wheatley, P. J., A. J. Norton, Wilson, D. M. (David M.), D. Pollacco, Cameron, Andrew Collier; id_orcid, Horne, K., Cameron, A. Collier   +78 more
core   +1 more source

Low-mass stars in the Hyades [PDF]

Monthly Notices of the Royal Astronomical Society, 1993
We present VRI photometry for a proper-motion-selected sample of candidate Hyades members, complete to V=19 over 110 deg 2 .
openaire   +1 more source

Autophagy and mitophagy in pancreatic β‐cell homeostasis and their involvement in diabetes pathophysiology

FEBS Letters, EarlyView.
This review focuses on the role of autophagy and mitophagy in maintaining pancreatic β‐cell function and homeostasis. We discuss how genetic defects affecting these pathways contribute to the development of type 1, type 2, monogenic, and gestational diabetes. We further explore their potential as therapeutic targets. Created in BioRender.
Yunkyeong Lee, Mingming Tong, Anna L. Gloyn   +2 more
wiley   +1 more source

The ALMA Survey of Gas Evolution of PROtoplanetary Disks (AGE-PRO). XII. Extreme Millimeter Variability Detected in a Class II Disk

The Astrophysical Journal
Variability of millimeter wavelength continuum emission from Class II protoplanetary disks is extremely rare, and when detected, it is usually interpreted as originating from nonthermal emission mechanisms that relate to the host star itself rather than ...
James M. Miley, Laura M. Pérez, Carolina Agurto-Gangas, Anibal Sierra, Leon Trapman, Miguel Vioque, Nicolas Kurtovic, Paola Pinilla, Ilaria Pascucci, Ke Zhang, Rossella Anania, John Carpenter, Lucas A. Cieza, Dingshan Deng, Camilo González-Ruilova, Giovanni P. Rosotti, Dary A. Ruiz-Rodriguez, Estephani E. TorresVillanueva   +17 more
doaj   +1 more source

The birthline for low-mass stars

The Astrophysical Journal, 1983
Using the results of protostar theory, the locus in the Hertzsprung-Russell diagram is found where pre-main-sequence stars of subsolar mass should begin their quasi-static contraction phase and first appear as visible objects. This 'birthline' is in striking agreement with observations of T Tauri stars, providing a strong confirmation of the fact that ...
openaire   +1 more source

Partial depletion of plasminogen activator inhibitor‐1 decreases subcutaneous fat cell hypertrophy and liver cholesterol in high‐fat‐fed female mice

FEBS Letters, EarlyView.
Obesity raises blood levels of PAI‐1, a protein linked to metabolic dysfunction‐associated steatotic liver disease in people with obesity. In female mice fed a high‐fat diet, partially lowering PAI‐1 led to smaller subcutaneous fat cells and lower liver cholesterol, without changing body weight or insulin sensitivity.
Claudia E. Ramirez Bustamante, Robert Sharp, Pradip K. Saha, Elizabeth S. Anaya, Elizabeth L. Lieu, Evelyn L. de Groot, Pooja Patel, Mi Jeong Heo, Aaron R. Cox, Kang Ho Kim, Sean M. Hartig   +10 more
wiley   +1 more source

Discovery of a Proto–White Dwarf with a Massive Unseen Companion

The Astrophysical Journal
We report the discovery of SDSS J022932.28+713002.7, a nascent extremely low-mass (ELM) white dwarf (WD) orbiting a massive (>1 M _⊙ at 2 σ confidence) companion with a period of 36 hr.
Gautham Adamane Pallathadka, Vedant Chandra, Nadia L. Zakamska, Hsiang-Chih Hwang, Yossef Zenati, J. J. Hermes, Kareem El-Badry, Boris T. Gänsicke, Sean Morrison, Nicole R. Crumpler, Stefan Arseneau   +10 more
doaj   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source