Scaling of laser produced plasma UTA emission down to 3 nm for next generation lithography and short wavelength imaging [PDF]
, 2011 Presented at a poster session at Advances in X-Ray/EUV Optics and Components VI, Monday 22 August 2011, San Diego, California, USAAn engineering prototype high average power 13.5-nm source has been shipped to semiconductor facilities to permit the ...
Deirdre Kilbane +25 more
core +2 more sources
LEGO: A 3 mm molecular line study covering 100 pc of one of the most actively star-forming portions in the Milky Way [PDF]
EPJ Web of Conferences, 2022 The current generation of high-sensitivity (sub)mm-telescopes such as the IRAM-30m and NOEMA have allowed the emission from molecular lines to become a major tool for studying the physical, kinematic and chemical properties of extragalactic systems ...
Barnes Ashley +2 more
doaj +1 more source
High resolution measurements and modeling of auroral hydrogen emission line profiles [PDF]
, 2003 Measurements in the visible wavelength range at high spectral resolution (1.3 A° ) have been made at Longyearbyen, Svalbard (15.8 E,78.2 N) during an interval of intense proton precipitation.
Frey, H.U. +34 more
core +1 more source
Spectral properties of AGN with very weak [O III] lines [PDF]
Serbian Astronomical Journal, 2011 The spectral properties of a sample of 58 Active Galactic Nuclei (AGN) spectra, in which emission [O III] λλ4959, 5007 Å lines are weak or totally absent, are analyzed.
Kovačević J.
doaj +3 more sources
A New Statistical Approach to the Optical Spectral Variability in Blazars
Galaxies, 2016 We present a spectral variability study of a sample of about 25 bright blazars, based on optical spectroscopy. Observations cover the period from the end of 2008 to mid 2015, with an approximately monthly cadence.
Jose A. Acosta-Pulido +3 more
doaj +1 more source
The excitation mechanisms of X-ray oxygen emission-lines [PDF]
, 2021 We present the Catalogue of High REsolution Spectra of Obscured Sources (CHRESOS) from the XMM-Newton Science Archive. It comprises soft X-ray emission-lines from C to Si and the Fe 3C and Fe 3G L-shell transitions.
Storchi-Bergmann, T. +10 more
core +4 more sources
Accretion Disk Structure and Kinematics of the Broad Line Regions in Selected AGN
Open Astronomy, 2011 Broad emission line regions in AGN are connected with the outer layers of accretion disks. This has been shown by means of line variability studies of individual AGN as well as line profile studies of AGN samples.
Kollatschny W., Zetzl M.
doaj +1 more source
Variability of Double-Peaked Emission Lines in AGNs as a Probe of the Broad-Line Region Structure
Open Astronomy, 2011 We demonstrate that the disk-wind model for the broad-line region (BLR) can explain the variability from single-peaked to double-peaked emission line (DPEL) profiles observed in some active galactic nuclei (AGNs) and can produce realistic single-peaked ...
Flohic Hélène M. L. G.
doaj +1 more source
EMISSION LINE GALAXIES IN CLUSTERS [PDF]
, 2006 At the present epoch, clusters of galaxies are known to be a hostile environment for emission-line galaxies, which are more commonly found in low density regions outside of clusters. In contrast, going to higher redshifts the population of emission-line galaxies in clusters becomes progressively more conspicuous, and large numbers of star-forming late ...
openaire +2 more sources
Resolved near-UV hydrogen emission lines at 40-Myr super-Jovian protoplanet Delorme 1 (AB)b: Indications of magnetospheric accretion [PDF]
, 2023 We have followed up on our observations of the ~ 40-Myr, and still accreting, PMC Delorme 1 (AB)b. We used high-resolution spectroscopy to characterise the accretion process further by accessing the wealth of emission lines in the near-UV. With VLT/UVES,
Yuhiko Aoyama +12 more
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