منابع مشابه
Optical Spectroscopy of Highly Ionized Neon
The recent development of sources such as the recoil ion source fl], producing highly charged, low energy (HQLE) ions presents the possibility of bringing highresolution Iascr spectroscopy to the study of highty tharged ions. A prerequisite For performing these measurements is the preparation of the HQLE ions quantum states which participate in transitions accessible to tunable lasers. For this...
متن کاملAbsolute line strengths by analysis of Lu-Fano plots with application to excited state transitions in neon
Using energy eigenfunctions obtained by semi-empirical analysis of the Lu-Fano plot of energy level positions and employing the Coulomb approximation of Bates and Damgaard, we calculate absolute line strengths for transitions between the neon two-channel Rydberg series 2p(P3/2,1/2)ns J = 1 and 2p (P3/2,1/2)n′ p J = 0 for n, n’ = 3,4. Each Rydberg series is analyzed separately to obtain a set of...
متن کاملLifetimes and Oscillator Strengths for Ultraviolet Transitions in Singly Ionized Copper
High-quality oscillator strengths are needed to convert the amount of interstellar absorption into an accurate abundance from data acquired with the Hubble Space Telescope and the Far Ultraviolet Spectroscopic Explorer. In order to help clarify the appropriate values to use for ultraviolet transitions in Cu ii, we report lifetimes from our beam-foil experiments. The Cu ii results for the 1358.7...
متن کاملFar-UV Line Strengths in Elliptical Galaxies
Much of the far-UV emission from elliptical galaxies is thought to arise from extreme horizontal branch stars and related objects. Only about 10% of the stellar population needs to evolve through this phase even in galaxies with the strongest UV upturn. However it is not yet clear if this population represents the extreme low-metallicity or highmetallicty tail of the distribution, or rather ari...
متن کاملWarm Molecular Hydrogen and Ionized Neon in the HH 2 Outflow
We report on spectro-imaging observations of the Herbig-Haro 2 outflow with the ISOCAM camera onboard the Infrared Space Observatory (ISO). The [Ne II] 12.81μm and [Ne III] 15.55μm lines are detected only towards the jet working surface (HH 2H), consistent with the high excitation of this knot in the optical range, while H2 pure rotational emission is found all over the shocked region HH 2. The...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1950
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/110.6.612