Results 61 to 70 of about 3,405,157 (289)

The Low-mass Stellar Initial Mass Function in Nearby Ultrafaint Dwarf Galaxies

The Astrophysical Journal
The stellar initial mass function (IMF) describes the distribution of stellar masses that form in a given star formation event. The long main-sequence lifetimes of low-mass stars mean that the IMF in this regime (below ∼ 1 M _⊙ ) can be investigated ...
Carrie Filion, Rosemary F. G. Wyse, Hannah Richstein, Nitya Kallivayalil, Roeland P. van der Marel, Elena Sacchi   +5 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

The stellar initial mass function of nearby young moving groups

Astronomy & Astrophysics
Context. The solar neighbourhood is populated by nearby (
Bertolotto-Stefanelli Rafael, José Downes Juan, Suárez Genaro, Mateu Cecilia, Gagné Jonathan, Román Zúñiga Carlos   +5 more
doaj   +1 more source

Variations in integrated galactic initial mass functions due to sampling method and cluster mass function [PDF]

Astronomy and Astrophysics, 2010
[abridged] Stars are thought to be formed predominantly in clusters. The clusters are formed following a cluster initial mass function (CMF) similar to the stellar initial mass function (IMF). Both the IMF and the CMF favour low-mass objects. The numerous low-mass clusters will lack high mass stars.
Haas, M.R., Anders, P.
openaire   +4 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

JWST’s PEARLS: Temperatures of Nine Highly Magnified Stars in a Galaxy at Redshift 0.94 and Simulated Stellar Population Dependence on Stellar Metallicity and the Initial Mass Function

The Astrophysical Journal
We present stellar atmosphere modeling of JWST NIRCam photometry of nine highly magnified individual stars in a single galaxy at redshift z = 0.94 known as the Warhol arc, which is strongly lensed by the galaxy cluster MACS J0416.
Hayley Williams, Patrick L. Kelly, Rogier A. Windhorst, Alexei V. Filippenko, Amruth Alfred, Tom Broadhurst, Wenlei Chen, Christopher J. Conselice, Seth H. Cohen, José M. Diego, Benne W. Holwerda, Anton M. Koekemoer, Sung Kei Li, Ashish Kumar Meena, José M. Palencia, Massimo Ricotti, Clayton D. Robertson, Bangzheng Sun, Haojing Yan, Adi Zitrin   +19 more
doaj   +1 more source

Measuring the stellar initial mass function [PDF]

Proceedings of the International Astronomical Union, 2019
AbstractThe birth of stars and the formation of galaxies are cornerstones of modern astrophysics. While much is known about how galaxies globally and their stars individually form and evolve, one fundamental property that affects both remains elusive.
openaire   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

The Stellar Content of NGC 3603 Revisited: Is the IMF Top Heavy?

The Astrophysical Journal
Studies of the resolved stellar populations of young massive clusters have shown that the slope of the initial mass function (IMF) appears to be the same everywhere, with no dependence on stellar density or metallicity.
Philip Massey, Nidia I. Morrell, Kathryn F. Neugent, Monica Herzog, Maria R. Drout, Caitlin O’Brien   +5 more
doaj   +1 more source

The low-mass Initial Mass Function in the 30 Doradus starburst cluster

, 2009
We present deep Hubble Space Telescope (HST) NICMOS 2 F160W band observations of the central 56*57" (14pc*14.25pc) region around R136 in the starburst cluster 30 Dor (NGC 2070) located in the Large Magellanic Cloud.
A. Moneti, Andersen, Andersen, B. Brandl, Bosch, Brandner, D. Hunter, Figer, G. Meylan, Goodwin, H. Zinnecker, Hillenbrand, Hook, Hunter, Kim, Larson, Low, M. Andersen, M. J. McCaughrean, Mandushev, Massey, Melnick, Meyer, Meylan, Muench, Omukai, Pehlemann, Portegies Zwart, Robberto, Rubio, Selman, Siess, Sirianni, Smith, Stolte, Stolte, W. Brandner, Walborn, Weigelt, Westerlund, Zinnecker, Zinnecker   +41 more
core   +1 more source