VizieR Online Data Catalog: Luminous X-ray candidates within D25 of galaxies (Gong+, 2016)

Using Chandra archive data we conduct a thorough survey of luminous X-ray sources. We directly analyze about 9400 ACIS Observations and cross-correlate the X-ray sources with 77000 galaxies within 250Mpc. The final catalog includes 119 unique luminous X-ray source candidates with L_X>3x10⁴⁰erg/s from 93 galaxies or 41 HLX candidates with L_X>1x10⁴¹erg/s from 35 galaxies. We derive a moderate contamination rate due to foreground or background sources. We also cross-correlate the catalog with FIRST, perform variability and periodicity tests, and analyze one HLX candidate in particular. Our catalog could be a starting point to perform follow-up observations.

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