5 research outputs found
A resolved, au-scale gas disk around the B[e] star HD 50138
articleHD 50138 is a B[e] star surrounded by a large amount of circumstellar gas and dust. Its spectrum shows characteristics which may indicate either a pre- or a post-main-sequence system. Mapping the kinematics of the gas in the inner few au of the system contributes to a better understanding of its physical nature. We present the first high spatial and spectral resolution interferometric observations of the BrÎł line of HD 50138, obtained with VLTI/AMBER. The line emission originates in a region more compact (up to 3 au) than the continuum-emitting region. Blue- and red-shifted emission originates from the two different hemispheres of an elongated structure perpendicular to the polarization angle. The velocity of the emitting medium decreases radially. An overall offset along the NW direction between the line- and continuum-emitting regions is observed. We compare the data with a geometric model of a thin Keplerian disk and a spherical halo on top of a Gaussian continuum. Most of the data are well reproduced by this model, except for the variability, the global offset and the visibility at the systemic velocity. The evolutionary state of the system is discussed; most diagnostics are ambiguous and may point either to a post-main-sequence or a pre-main-sequence nature.National Science FoundationGeorgia State UniversityW.M. Keck FoundationDavid and Lucile Packard FoundationFizeau ProgramCNRS-PICS progra
PALB2 mutations in BRCA1/2-mutation negative breast and ovarian cancer patients from Poland
Pathogenic variant burden in the ExAC database: an empirical approach to evaluating population data for clinical variant interpretation
Additional file 2: of Individual and organizational predictors of allied healthcare providers’ job satisfaction in residential long-term care
Correlation Matrix for Dependent and Independent Study Variables. This file contains a correlation matrix of the dependent variables (demographic-level, individual-level, and context-level variables) and the independent variable (job satisfaction). (DOCX 32 kb