Publications (13)
The XSTAR Atomic Database
Claudio Mendoza, Manuel A. Bautista, Jérôme Deprince +7
We describe the atomic database of the XSTAR spectral modeling code, summarizing the systematic upgrades carried out in the past twenty years to enable the modeling of K lines from…
Atomic Radiative Data for Oxygen and Nitrogen for Solar Photospheric Studies
Manuel A. Bautista, Maria Bergemann, Helena Carvajal Gallego +3
Our recent re-analysis of the solar photospheric spectra with non-local thermodynamic equilibrium (non-LTE) models resulted in higher metal abundances compared to previous works. W…
Spectrum Synthesis Modeling of the X-ray Spectrum of GRO J1655-40 Taken During the 2005 Outburst
T. R. Kallman, M. A. Bautista, Stephane Goriely +5
The spectrum from the black hole X-ray transient GRO J1655-40. obtained using the High Energy Transmission Grating (HETG) in 2005 is notable as a laboratory for the study…
Uncertainties in Atomic Data and Their Propagation Through Spectral Models. I
Manuel A. Bautista, Vanessa Fivet, Pascal Quinet +3
We present a method for computing uncertainties in spectral models, i.e. level populations, line emissivities, and emission line ratios, based upon the propagation of uncertainties…
Kilonova ejecta opacity inferred from new large-scale HFR atomic calculations in all elements between Ca (Z = 20) and Lr (Z = 103)
Jérôme Deprince, Gururaj Wagle, Sirine Ben Nasr +7
In the context of kilonova (KN) modeling, the present work focusses on large-scale atomic data and opacity computations for all heavy elements from Ca to Lr, with a special effort…
Critically Evaluated Atomic Data for Au IV Spectrum
Aashna Zainab, K. Haris, Sébastien Gamrath +2
The spectral investigation of the triply ionized gold (Au IV) has been carried out in the wavelength region of 500--2106 Ã . The gold spectra were photographed at the National Inst…
Observational constraints on the origin of the elements. IV: The standard composition of the Sun
Ekaterina Magg, Maria Bergemann, Aldo Serenelli +11
The chemical composition of the Sun is requested in the context of various studies in astrophysics, among them in the calculation of the standard solar models (SSMs), which describ…
Cerium: the lithium substitute in post-AGB stars
Maarten Reyniers, Hans Van Winckel, Emile Biemont +1
In this letter we present an alternative identification for the line detected in the spectra of s-process enriched low-mass post-AGB stars around 6708A and which was interpreted in…
Plasma Effects On Atomic Data For The K-Vacancy States Of Highly Charged Iron Ions
Jérôme Deprince, Stefan Fritzsche, Tim Kallman +2
The main goal of the present work is to estimate the effects of plasma environment on the atomic parameters associated with the K-vacancy states in highly charged iron ions within…
HRMOS: A High-Resolution Multi-Object Spectrograph for the VLT
Laura Magrini, Thomas Bensby, Sofia Randich +174
This White Paper presents the scientific rationale and instrument concept for HRMOS (High-Resolution Multi-Object Spectrograph), a next-generation instrument proposed for the ESO V…
Atomic Data and Spectral Models for FeII
Manuel A. Bautista, Vanessa Fivet, Connor Ballance +4
We present extensive calculations of radiative transition rates and electron impact collision strengths for Fe II. The data sets involve 52 levels from the , , an…
Experimental and theoretical lifetimes and transition probabilities in Sb I
Henrik Hartman, Hampus Nilsson, Lars Engström +4
We present experimental atomic lifetimes for 12 levels in Sb I, out of which seven are reported for the first time. The levels belong to the 5p(P)6s P, P and 5p…
Atomic data and spectral model for Fe III
Manuel A. Bautista, Connor P. Ballance, Pascal Quinet
We present new atomic data (radiative transitions rates and collision strengths) from large scale calculations and a non-LTE spectral model for Fe III. This model is in very good a…