Results 61 to 70 of about 23,176 (215)
Imaging of the Stellar Population of IC10 with Laser Guide Star Adaptive Optics and the Hubble Space Telescope [PDF]
, 2007 We present adaptive optics (AO) images of the central starburst region of the dwarf irregular galaxy IC10. The Keck 2 telescope laser guide star was used to achieve near diffraction-limited performance at H and K' (Strehls of 18% and 32%, respectively ...
Borissova J. +6 more
core +2 more sources
Optical and infrared photometry of Arakelian 120 [PDF]
Publications of the Astronomical Society of the Pacific, 1978 Optical and IR photometry of the Seyfert class 1 galaxy Arakelian 120 covering the wavelength range from 0.36 to 3.5 microns is reported. The observed fluxes are found to consist of contributions of starlight from the surrounding galaxy, emission lines, thermal gas continuum, nonthermal radiation, and possible IR emission from dust.
openaire +1 more source
The Spitzer Local Volume Legacy (LVL) global optical photometry [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 We present the global optical photometry of 246 galaxies in the Local Volume Legacy (LVL) survey. The full volume-limited sample consists of 258 nearby (D < 11 Mpc) galaxies whose absolute B-band magnitude span a range of -9.6 < M_B < -20.7 mag. A composite optical (UBVR) data set is constructed from observed UBVR and SDSS ugriz imaging, where
Cook, David O. +8 more
openaire +2 more sources
Advanced Science, EarlyView.An activity‐dependent pathway links prefrontal circuit hypoactivity to cognitive impairment. Reduced PVA–mPFC activity upregulates NEPAS, which suppresses PTX3 secretion, leading to impaired angiogenesis, myelin deficits, and memory decline. Rescue is achieved by NEPAS knockdown or chemogenetic circuit activation.
Boya Hu +11 more
wiley +1 more source
The orbit of the brown dwarf binary Gl 569B [PDF]
, 2001 We present photometric, astrometric and spectroscopic observations of the nearby (9.8 pc) low-mass binary Gl 569Bab (in turn being a companion to the early-M star Gl 569A), made with the Keck adaptive optics facility.
B. F. Lane +17 more
core +2 more sources
Optical Multicolor Photometry of Spectrophotometric Standard Stars
The Astronomical Journal, 2007 76 pages, 48 figures - published version available here: http://www.journals.uchicago.edu/AJ/journal/issues/v133n3/205588/205588.html .
Landolt, Arlo U., Uomoto, Alan K.
openaire +2 more sources
Advanced Science, EarlyView.ABSTRACT Extracellular vesicles (EVs) are nanoscale mediators of intercellular communication with diverse molecular cargoes that reflect their cell of origin. Advances in isolation, detection, and single‐particle analytics have revealed increasing molecular and functional heterogeneity, while exposing limitations in how EV identity and activity are ...
David J. Lundy +8 more
wiley +1 more source
Deep Impact: Optical spectroscopy and photometry obtained at MIRA [PDF]
Icarus, 2007 11 pages, 16 figures, 2 Appendices; original ...
Walker, Russell G. +3 more
openaire +2 more sources
ALKBH3 m1A Demethylase Deficiency Reduces Alzheimer's Amyloid‐β Pathology
Advanced Science, EarlyView.This study identifies that ALKBH3‐driven m1A demethylation orchestrates Alzheimer's disease progression by disrupting mitochondrial and synaptic homeostasis. This epitranscriptomic mechanism suppresses PINK1‐mediated mitophagy via m1A erasure, leading to mitochondrial dysfunction, oxidative stress, elevated Aβ production, and impaired microglial ...
Yueyang Li +25 more
wiley +1 more source
, 2013 We present high resolution adaptive optics (AO) corrected images of the silhouette disk Orion 218-354 taken with Magellan AO (MagAO) and its visible light camera, VisAO, in simultaneous differential imaging (SDI) mode at H-alpha.
Briguglio, Runa +13 more
core +1 more source