Astrophysical: X-ray surveys

  • Publication
    BASS. XXV. DR2 Broad-line-based Black Hole Mass Estimates and Biases from Obscuration

    We present measurements of broad emission lines and virial estimates of supermassive black hole masses (M BH) for a large sample of ultrahard X-ray-selected...

  • Publication
    BASS. XXXV. The M <SUB>BH</SUB>-σ* Relation of 105 Month Swift-BAT Type 1 AGNs

    We present two independent measurements of stellar velocity dispersions (σ ⋆) from the Ca II H+K λ3969, 3934 and Mg I b λ 5183, 5172, 5167 region (3880-5550 Å)...

  • Publication
    The ROSAT UK medium sensitivity survey.

    The authors present the first results on the optical identification of 89 ROSAT sources on the second Lockman hole. Because of the low Galactic H I column...