Results 101 to 110 of about 241,576 (378)

Structural biology of ferritin nanocages

open access: yesFEBS 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

Spectral Biases, Starspot Morphology, and Dynamo Transitions on the Pre-main Sequence: Insights from the X-Shooter WTTS Library

open access: yesThe Astrophysical Journal
Starspots are ubiquitous in young, low-mass stars, yet their impact on the spectral classification and fundamental parameter inference of pre-main-sequence stars (PMS) has been largely overlooked.
Facundo Pérez Paolino   +4 more
doaj   +1 more source

Pre-main-sequence Brackett Emitters in the APOGEE DR17 Catalog: Line Strengths and Physical Properties of Accretion Columns

open access: yesThe Astrophysical Journal, 2022
Very young ( t ≲ 10 Myr) stars possess strong magnetic fields that channel ionized gas from the interiors of their circumstellar disks to the surface of the star.
Hunter Campbell   +23 more
doaj   +1 more source

Spectroscopic variability of massive pre-main-sequence stars in M17 [PDF]

open access: diamond, 2023
Annelotte Derkink   +6 more
openalex   +1 more source

The influence of radiative core growth on coronal X-ray emission from pre-main sequence stars [PDF]

open access: yes, 2016
SGG acknowledges support from the Science & Technology Facilities Council (STFC) via an Ernest Rutherford Fellowship [ST/J003255/1]. CLD acknowledges support from STFC via a PhD studentship and additional funding via the STFC Studentship Enhancement ...
S. Gregory   +4 more
semanticscholar   +1 more source

Investigating the cell of origin and novel molecular targets in Merkel cell carcinoma: a historic misnomer

open access: yesMolecular Oncology, EarlyView.
This study indicates that Merkel cell carcinoma (MCC) does not originate from Merkel cells, and identifies gene, protein & cellular expression of immune‐linked and neuroendocrine markers in primary and metastatic Merkel cell carcinoma (MCC) tumor samples, linked to Merkel cell polyomavirus (MCPyV) status, with enrichment of B‐cell and other immune cell
Richie Jeremian   +10 more
wiley   +1 more source

Clumpy accretion onto pre-main-sequence stars [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 1992
Medium-resolution spectroscopic observations covering the range 5150-9100 A are made of five premain-sequence stars in the Corona Australis star-forming region. They are the known variable stars R CrA, S CrA, T CrA, TY CrA, and VV CrA. During the week of observation significant changes, sometimes occurring between successive nights, were observed in ...
openaire   +1 more source

Massive pre-main sequence stars in M17 [PDF]

open access: yesProceedings of the International Astronomical Union, 2015
AbstractWe have obtained optical to near-infrared (300-2500 nm) VLT/X-shooter spectra of six candidate mYSOs, deeply embedded in the massive star forming region M17. These mYSO candidates have been identified based on their infrared excess and spectral features (double-peaked emission lines, CO band-head emission) indicating the presence of a disk ...
Maria C. Ramirez-Tannus   +3 more
openaire   +1 more source

Pre-mainsequence stellar evolution in N-body models [PDF]

open access: yes, 2014
We provide a set of analytic fits to the radii of pre-mainsequence stars in the mass range 0.1 < M/Msun < 8.0. We incorporate the formulae in N-body cluster models for evolution from the beginning of pre-main sequence. In models with 1,000 stars and high
Aarseth, Sverre J.   +2 more
core   +1 more source

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