The eruptive young star V899 Mon shows characteristics of both FUors and EXors. It reached a peak brightness in 2010, then briefly faded in 2011, followed by a second outburst....
VizieR online Data Catalogue associated with article published in journal Astronomical Journal (AAS) with title 'Compact groups of galaxies in Sloan Digital Sky Survey and LAMOST spectral survey. I. T
We have recalibrated a method for the estimation of stellar metal abundance, parameterized as [Fe/H], based on medium-resolution (1-2{AA}) optical spectra (the majority of which...
