We present moderate-resolution Keck spectra of nine candidate globular clusters in the possible merger-remnant elliptical galaxy NGC 3610. Eight of the objects appear to be bona fide globular clusters of NGC 3610. We find that two of the clusters belong to an old metal-poor population, five to an old metal-rich population, and only one to an intermediate-age metal-rich population. The estimated...

The formation mechanism of single walled carbon nanotubes (SWNTs) is studied with cluster beam experiments and molecular dynamics simulations. A FT-ICR mass spectrometer directly connected to the laser-vaporization cluster beam source was employed to study the metal-carbon binary clusters generated by the laser-vaporization of Ni/Co loaded carbon materials used for the laser-furnace production ...

Neutral niobium and tantalum clusters (Nbn and Tan) are generated by laser ablation and supersonic expansion into a vacuum and are reacted in a pickup cell with various low pressure (approximately 1 mTorr) unsaturated hydrocarbons (acetylene, ethylene, propylene, 1-butene, 1,3-butadiene, benzene, and toluene) under nearly single collision conditions. The bare metal clusters and their reaction p...

The results from Suzaku XIS observations of the relaxed cluster of galaxies Abell 2052 are presented. Offset pointing data are used to estimate the Galactic foreground emission in the direction to the cluster. Significant soft X-ray excess emission above this foreground, the intra-cluster medium emission, and other background components is confirmed and resolved spectroscopically and radially. ...

Neuronal growth-inhibitory factor (GIF), a central-nervous-system-specific metallothionein-like protein, has been isolated by means of an improved isolation procedure from bovine brain. The native protein contains 4-5 Cu+ and 2-2.5 Zn2+, which results in an overall stoichiometry of 6-7 mol metal ions/mol protein. Native Cu, ZN-GIF and the Zn2+ -substituted and Cd2+-substituted metalloforms have...

Studies of gas phase M(L)n cluster ions (where M is a metal atom and L is a ligand molecule) assist our understanding of solvation and chemical processes that involve metal ions. The recent development of pulsed, tuneable OPO (optical parametric oscillator) sources capable of generating infrared light at frequencies between 1000 and 4000 cm 1 has allowed the vibrational spectra of many species ...

Novel carbon nanotube-metal cluster structures are proposed as prototype systems for molecular recognition at the nanoscale. Ab initio calculations show that already the bare nanotube cluster system displays some specificity because the adsorption of ammonia on a carbon nanotube-Al cluster system is easily detected electrically, while diborane adsorption does not provide an electrical signature...

Photon-induced ultrafast energy dissipation in small isolated Ni3 2 has been studied by two-color pumpprobe photoelectron spectroscopy. The time-resolved photoelectron spectra clearly trace the path from a singleelectron excitation to a thermalized cluster via both inelastic electron-electron scattering and electronvibrational coupling. The relatively short electron-electron-scattering time of ...

We report the formation of a series of metal-containing hydrogenated silicon clusters using an ion trap. Mass analyses reveal that many types of transition metal ions M(+) ( M = Hf, Ta, W, Re, Ir, etc.) react with silane (SiH4) to form dehydrogenated MSi( +)(n) cluster ions ( n = 14, 13, 12, 11, 9, respectively) as an end product, indicating that the metal atom is endohedral and stabilizes the ...

A new carboxylic acid functionalised cavitand forms [Cu(3)L(2)] metallo-cryptophanes with Cu(OAc)(2) that can be linked together into dimers with the bridging ligand 1,2-bis(4-pyridyl)ethylene. Reaction of the cavitand with Co(OAc)(2) gives a metallo-cryptophane with a central Co(7) cluster.