Ultra-short period planets (USPs) are a unique class of super-Earths with an orbital period of less than a day and hence subject to intense radiation from their host star. These...
VizieR online Data Catalogue associated with article published in journal Astronomy & Astrophysics with title 'Optical spectroscopy of DENIS Mini-Survey Brown Dwarf Candidates.' (bibcode: 1998A&am
CSC uses combined (i.e. overlapping) Chandra observations for detecting X-ray sources. This allows the catalog to include significantly fainter sources than CSC 1.1. The set of overlapping observation
