Results 71 to 80 of about 174,695 (330)

Simple stellar population models including blue stragglers

, 2010
Observations show that nearly all star clusters and stellar populations contain blue straggler stars (BSs). BSs in a cluster can significantly enhance the integrated spectrum of the host population, preferentially at short wavelengths, and render it much
de Grijs, Richard, Deng, Licai, Kroupa, Pavel, Xin, Yu   +3 more
core   +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

Stellar Collisions in the Galactic Center: Massive Stars, Collision Remnants, and Missing Red Giants

The Astrophysical Journal, 2023
Like most galaxies, the Milky Way harbors a supermassive black hole (SMBH) at its center, surrounded by a nuclear star cluster. In this dense star cluster, direct collisions can occur between stars before they evolve off the main sequence.
Sanaea C. Rose, Smadar Naoz, Re’em Sari, Itai Linial   +3 more
doaj   +1 more source

Integrated spectral energy distributions of binary star composite stellar populations

, 2012
This paper presents theoretical integrated spectral energy distributions (SEDs) of binary star composite stellar populations (bsCSPs) in early-type galaxies, and how the bsCSP model can be used for spectral studies of galaxies.
Belkus, Bruzual, Cerviño, Chabrier, Conroy, Conroy, Conroy, Gallazzi, Goldberg, Han, Han, Han, Hjellming, Hurley, Jinzhong Liu, Lançon, Le Borgne, Lee, Leitherer, Lejeune, Lejeune, Li, Li, Li, Li, Li, Liyun Zhang, Maraston, Mazeh, Mollá, Mármol-Queraltó, Robert, Salpeter, Schulz, Thomas, Tout, Van Bever, Van Bever, van Bever, Vazdekis, Vázquez, Westera, Yi, Yi, Zhang, Zhongmu Li   +45 more
core   +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

The Mass of the Vela Pulsar Progenitor and the Age of the Vela-Puppis Complex

The Astrophysical Journal
The association of the Vela Pulsar with the Vela Supernova Remnant has long supported the hypothesis that core-collapse supernovae yield neutron stars, but its surrounding stellar population now offers new insights into progenitor evolution.
Jeremiah W. Murphy, Andrés F. Barrientos, René Andrae, Joseph Guzman, Benjamin F. Williams, Julianne J. Dalcanton, Brad Koplitz   +6 more
doaj   +1 more source

Multiple Stellar Populations in Asymptotic Giant Branch Stars of Galactic Globular Clusters [PDF]

, 2021
E. P. Lagioia, A. P. Milone, A. F. Marino, M. Tailo, A. Renzini, M. Carlos, G. Cordoni, E. Dondoglio, Sohee Jang, Amanda I. Karakas, Aaron Dotter   +10 more
openalex   +1 more source

Constraining the metallicities, ages, star formation histories, and ionizing continua of extragalactic massive star populations

, 2019
We infer the properties of massive star populations using the far-ultraviolet stellar continua of 61 star-forming galaxies: 42 at low-z observed with HST and 19 at z~2 from the Megasaura sample.
Bayliss, M., Berg, D. A., Chisholm, J., Dahle, H., Gladders, M., Rigby, J. R., Sharon, K.   +6 more
core   +1 more source

The zinc finger domains of PARP‐1 are selectively and potently inhibited by the Au(I)‐based drugs sodium aurothiomalate and aurothioglucose

FEBS Letters, EarlyView.
PARP‐1 is a key enzyme in the DNA damage response, and its inhibition induces cancer cell death via synthetic lethality. Au(I)‐based drugs, such as aurothioglucose and sodium aurothiomalate, block PARP‐1's DNA‐dependent activity by targeting its zinc finger domains.
Uliana Bashtanova, Melinda Jane Duer
wiley   +1 more source

Orion Revisited - I. The massive cluster in front of the Orion Nebula Cluster

, 2012
The aim of this work is to characterize the stellar population between Earth and the Orion A molecular cloud where the well known star formation benchmark Orion Nebula Cluster (ONC) is embedded.
Alves, J., Bouy, H.
core   +1 more source