VizieR Online Data Catalog: BASS. XXII. The Swift/BAT AGN Sp. Survey DR2 cat. (Koss+, 2022)

The initial 70-month catalog (Baumgartner+ 2013, J/ApJS/207/19) was composed of 1210 sources, including 822 classified as AGNs or associated with a galaxy and likely an AGN, 287 Galactic sources (e.g., high/low-mass X-ray binary, cataclysmic variable, pulsar), 19 clusters, and 82 unknown sources. The counterpart positions and AGN classifications were updated based on WISE and X-ray data for 838 AGNs in the BASS DR1 (Ricci+ 2017, J/ApJS/233/17), which included three dual AGN systems. Here we discuss the BASS DR2 AGN counterparts after an extensive examination of the remaining unknown 70-month catalog sources.

The largest sample of targeted sources, 402, was observed with the Palomar Double Spectrograph (DBSP) on the 200-inch Hale telescope. These AGNs were observed as part of a dedicated program on BAT AGNs (P.I. M. Urry or M. Powell) or as part of the NuSTAR program (P.I. F. Harrison and D. Stern), where they served as backup targets to faint NuSTAR serendipitous sources. The observations were performed between 2012 October and 2020 November. See Section 3.2.1.

A total of 211 were observed with the VLT X-shooter, a multiwavelength (3000-25000Å) echelle spectrograph with medium spectral resolution R=4000-18000. There were also 69 observations with VLT/FORS2 done in a single observing semester in 2017 (099.A-0403A). See Section 3.2.2.

We observed 153 sources at the Southern Astrophysical Research (SOAR) telescope using the Goodman instrument as part of six programs between 2017 and 2020 (P.I. C. Ricci). See Section 3.2.3.

Over 11 nights in 2016, 119 AGNs were observed with the du Pont telescope with the Bollens & Chivens spectrograph (P.I. C. Ricci).

Some AGNs were also observed with the Keck telescopes associated with observations of NuSTAR-observed AGNs and mergers (e.g., Koss+ 2016ApJ...824L...4K). A total of 21 observations were carried out using the Low Resolution Imaging Spectrometer (LRIS) on the Keck I Telescope.

We performed 12 observations with the Magellan Echellete (MagE) spectrograph on the Magellan Clay telescope.

We also included additional spectra from archival sources. We used spectra from the SDSS (APO), with 151 sources from DR16 (V/154). See Section 3.2.7.

(3 data files).