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An approach to the analysis of SDSS spectroscopic outliers based on Self-Organizing Maps
D. Fustes, M. Manteiga, C. Dafonte +5
Aims. A new method is applied to the segmentation, and further analysis of the outliers resulting from the classification of astronomical objects in large databases is discussed. T…
The Gaia astrophysical parameters inference system (Apsis). Pre-launch description
C. A. L. Bailer-Jones, R. Andrae, B. Arcay +46
The Gaia satellite will survey the entire celestial sphere down to 20th magnitude, obtaining astrometry, photometry, and low resolution spectrophotometry on one billion astronomica…
Detection of a multi-shell planetary nebula around the hot subdwarf O-type star 2MASS J19310888+4324577
A. Aller, L. F. Miranda, A. Ulla +8
(Abridged) The origin of hot subdwarf O-type stars (sdOs) remains unclear since their discovery in 1947. Among others, a post-Asymptotic Giant Branch (post-AGB) origin is possible…