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R-Process Alliance: UV sp. of HD 222925
We present a nearly complete rapid neutron-capture process (r-process) chemical inventory of the metal-poor ([Fe/H]=-1.46+/-0.10) r-process-enhanced ([Eu/Fe]=+1.32+/-0.08) halo... -
Abundances of northern bright TESS stars
In fulfilling the aims of the planetary and asteroseismic research missions, such as that of the NASA Transiting Exoplanet Survey Satellite (TESS) space telescope, accurate... -
Stellar population parameters from LAMOST DR7
We first derive the stellar population properties: age and metallicity for ~43000 low redshift galaxies in the DR7 of the Large Sky Area Multi-Object Fiber Spectroscopic... -
Time-dependent cooling in photoionized plasma
I explore the thermal evolution and ionization states in gas cooling from an initially hot state in the presence of external photoionizing radiation. I compute the equilibrium... -
Planetary candidates from 1st yr K2 mission
The Kepler Space Telescope is currently searching for planets transiting stars along the ecliptic plane as part of its extended K2 mission. We processed the publicly released... -
NiI transition probability measurements
Atomic transition probability measurements for 371 NiI lines in the UV through near-IR are reported. Branching fractions from data recorded using a Fourier transform... -
R-matrix electron-impact excitation of Fe^13+^
Accurate excitation parameters are required to interpret the ultraviolet and X-ray spectra of Fe^13+^. In this work, we use the autostructure code to describe the atomic... -
Spectroscopy of Coma early-type galaxies
The long-slit spectra obtained along the minor axis, offset major axis, and diagonal axis are presented for 12 E and S0 galaxies of the Coma Cluster drawn from a... -
Properties and metal abundances of clusters
We have assembled a sample of 115 galaxy clusters at 0.1<z<1.3 with archived Chandra ACIS-I observations. We present X-ray images of the clusters and make available region... -
Atmospheric parameters of 1907 metal-rich stars
We report high-precision atmospheric parameters for 1907 stars in the N2K low-resolution spectroscopic survey, designed to identify metal-rich FGK dwarfs likely to harbor... -
Transition probabilities for HfII and Hf
Radiative lifetimes from laser-induced fluorescence measurements, accurate to ~+/-5%, are reported for 41 odd-parity levels of HfII (Z=72). The lifetimes are combined with... -
Abundance gradients in the Galaxy
Six HII regions at galactocentric distances of R=10-15kpc have been observed in the far-IR emission lines of [OIII] (52{mu}m, 88{mu}m), [NIII] (57{mu}m), and [SIII] (19{mu}m)... -
Metallicity of M dwarfs. III.
The aim of this work is the study of the planet-metallicity and the planet-stellar mass correlations for M dwarfs from the HARPS GTO M dwarf subsample. We use a new method that... -
Solar analogs abundances
The aim of this work was to obtain precise atmospheric parameters and chemical abundances automatically for solar twins, in order to find signatures of exoplanets, assess how... -
n-capture element abundances
Globular clusters (GCs) are key to understanding the formation and evolution of our Galaxy. While the abundances of light and Fe-peak elements in GCs have been widely studied,... -
NLTE corrections for metal-poor stars
Early chemical enrichment processes can be unveiled by the careful study of metal-poor stars. In our Local Group, we can obtain spectra of individual stars to measure their... -
HD 32115 and HD 37594 atmospheric parameters
We present detailed parameter determinations of two chemically normal late A-type stars, HD 32115 and HD 37594, to uncover the reasons behind large discrepancies between two...
