Beryllium, Lithium and Oxygen Abundances in F-type Stars
Beryllium and oxygen abundances have been derived in a sample of F-type field stars for which lithium abundances had been measured previously, with the aim of...
Beyond MHD: modeling and observation of partially ionized solar plasma processes
The temperature and density conditions in the magnetized photosphere and chromosphere of the Sun lead to a very small degree of atomic ionization. At particular...
Beyond the Hubble Sequence — Exploring Galaxy Morphology with Unsupervised Machine Learning
Conventionally, galaxy morphological classifications are defined by visual assessment. However, visual classification systems such as Hubble types can be...
We present the analysis of the photometric and spectroscopic properties of a sample of 29 low redshift (z 0.6) QSOs for which both HST WFPC2 optical images and...