Results 61 to 70 of about 1,250,237 (300)
The End of the Lines for OX 169: No Binary Broad-Line Region [PDF]
, 1999 We show that unusual Balmer emission line profiles of the quasar OX 169, frequently described as either self-absorbed or double peaked, are actually neither. The effect is an illusion resulting from two coincidences.
Diplas A. +11 more
core +2 more sources
AAA+ protein unfoldases—the Moirai of the proteome
FEBS Letters, EarlyView.AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley +1 more source
The Astrophysical JournalWe explore the properties of interferometric data from high-redshift 21 cm measurements using the Murchison Widefield Array (MWA). These data contain the redshifted 21 cm signal, contamination from continuum foreground sources, and radiometric noise. The
Cathryn M. Trott +31 more
doaj +1 more source
, 2011 We present very deep CCD spectrum of the bright, medium-excitation planetary nebula NGC 7009, with a wavelength coverage from 3040 to 11000 A. Traditional emission line identification is carried out to identify all the emission features in the spectra ...
Fang, X., Liu, X. -W.
core +1 more source
VLA Observations of H I in the Helix Nebula (NGC 7293) [PDF]
, 2002 We report the detection of 21-cm line emission from H I in the planetary nebula NGC 7293 (the Helix). The observations, made with the Very Large Array, show the presence of a ring of atomic hydrogen that is associated with the outer portion of the ...
Boffi F. R. +10 more
core +2 more sources
The extreme Ultraviolet emission from the Sun between the Lyman-alpha lines of H I and C VI [PDF]
Symposium - International Astronomical Union, 1965 As a result of research carried out with rocket-borne grating spectrographs, the nature of the extreme ultraviolet spectrum of the Sun is now known to a short wavelength limit of 33.7 Å, the Lyman-alpha line of C VI. Most of the emission lines of wavelengths greater than 400 Å have been identified, as have those from 80 Å to 33.7 Å.
R. Tousey +3 more
openaire +1 more source
Plecstatin inhibits hepatocellular carcinoma tumorigenesis and invasion through cytolinker plectin
Molecular Oncology, EarlyView.The ruthenium‐based metallodrug plecstatin exerts its anticancer effect in hepatocellular carcinoma (HCC) primarily through selective targeting of plectin. By disrupting plectin‐mediated cytoskeletal organization, plecstatin inhibits anchorage‐dependent growth, cell polarization, and tumor cell dissemination.
Zuzana Outla +10 more
wiley +1 more source
Probing Small-scale Dark Matter Clumping with the Large-scale 21 cm Power Spectrum
The Astrophysical Journal LettersThe 21 cm line of hydrogen is the most promising probe of the Dark Ages and Cosmic Dawn. We combine hydrodynamical simulations with a large-scale grid in order to calculate the effect of nonlinear structure formation on the large-scale 21 cm power ...
Sudipta Sikder +4 more
doaj +1 more source
A Lyman-alpha-only AGN from the Sloan Digital Sky Survey
, 2004 The Sloan Digital Sky Survey has discovered a z=2.4917 radio-loud active galactic nucleus (AGN) with a luminous, variable, low-polarization UV continuum, H I two-photon emission, and a moderately broad Lyman-alpha line (FWHM = 1430 km/s) but without ...
Atsuko Nitta +31 more
core +1 more source
Faint H
The Astrophysical Journal Supplement Series, 2007 41 pages, 14 figures, to be published in ...
Kang, Ji-hyun, Koo, Bon-Chul
openaire +2 more sources