The Astrophysical Journal Supplement Series (Jan 2022)
BASS. XXI. The Data Release 2 Overview
- Michael J. Koss,
- Benny Trakhtenbrot,
- Claudio Ricci,
- Franz E. Bauer,
- Ezequiel Treister,
- Richard Mushotzky,
- C. Megan Urry,
- Tonima T. Ananna,
- Mislav Baloković,
- Jakob S. den Brok,
- S. Bradley Cenko,
- Fiona Harrison,
- Kohei Ichikawa,
- Isabella Lamperti,
- Amy Lein,
- Julian E. Mejía-Restrepo,
- Kyuseok Oh,
- Fabio Pacucci,
- Ryan W. Pfeifle,
- Meredith C. Powell,
- George C. Privon,
- Federica Ricci,
- Mara Salvato,
- Kevin Schawinski,
- Taro Shimizu,
- Krista L. Smith,
- Daniel Stern
Affiliations
- Michael J. Koss
- ORCiD
- Eureka Scientific, 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017, USA ; [email protected]; Space Science Institute , 4750 Walnut Street, Suite 205, Boulder, CO 80301, USA
- Benny Trakhtenbrot
- ORCiD
- School of Physics and Astronomy, Tel Aviv University , Tel Aviv 69978, Israel
- Claudio Ricci
- ORCiD
- Núcleo de Astronomía de la Facultad de Ingeniería, Universidad Diego Portales , Av. Ejército Libertador 441, Santiago 22, Chile; Kavli Institute for Astronomy and Astrophysics, Peking University , Beijing 100871, People’s Republic of China
- Franz E. Bauer
- ORCiD
- Space Science Institute , 4750 Walnut Street, Suite 205, Boulder, CO 80301, USA; Instituto de Astrofísica and Centro de Astroingeniería, Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile; Millennium Institute of Astrophysics (MAS), Nuncio Monseñor Sótero Sanz 100, Providencia, Santiago, Chile
- Ezequiel Treister
- ORCiD
- Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile , Casilla 306, Santiago 22, Chile
- Richard Mushotzky
- ORCiD
- Department of Astronomy and Joint Space-Science Institute, University of Maryland , College Park, MD 20742, USA
- C. Megan Urry
- ORCiD
- Yale Center for Astronomy & Astrophysics and Department of Physics, Yale University , P.O. Box 208120, New Haven, CT 06520-8120, USA
- Tonima T. Ananna
- ORCiD
- Department of Physics and Astronomy, Dartmouth College, 6127 Wilder Laboratory, Hanover, NH 03755, USA
- Mislav Baloković
- ORCiD
- Yale Center for Astronomy & Astrophysics, 52 Hillhouse Avenue, New Haven, CT 06511, USA; Department of Physics, Yale University , P.O. Box 2018120, New Haven, CT 06520, USA
- Jakob S. den Brok
- ORCiD
- Institute for Particle Physics and Astrophysics, ETH Zürich, Wolfgang-Pauli-Strasse 27, CH-8093 Zürich, Switzerland; Argelander Institute for Astronomy , Auf dem Hügel 71, D-53231, Bonn, Germany
- S. Bradley Cenko
- ORCiD
- Astrophysics Science Division, NASA Goddard Space Flight Center, Mail Code 661, Greenbelt, MD 20771, USA
- Fiona Harrison
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
- Kohei Ichikawa
- ORCiD
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University , Sendai 980-8578, Japan; Astronomical Institute, Tohoku University , Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan; Max-Planck-Institut für extraterrestrische Physik (MPE), Giessenbachstrasse 1, D-85748 Garching bei Müunchen, Germany
- Isabella Lamperti
- ORCiD
- Centro de Astrobiología (CAB), CSIC-INTA, Cra. de Ajalvir Km. 4, E-28850 Torrejón de Ardoz, Madrid, Spain
- Amy Lein
- ORCiD
- Astrophysics Science Division, NASA Goddard Space Flight Center, Mail Code 661, Greenbelt, MD 20771, USA
- Julian E. Mejía-Restrepo
- ORCiD
- European Southern Observatory, Casilla 19001, Santiago 19, Chile
- Kyuseok Oh
- ORCiD
- Korea Astronomy & Space Science institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea; Department of Astronomy, Kyoto University , Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
- Fabio Pacucci
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian, Cambridge, MA 02138, USA; Black Hole Initiative, Harvard University , Cambridge, MA 02138, USA
- Ryan W. Pfeifle
- ORCiD
- Department of Physics and Astronomy, George Mason University , 4400 University Drive, MSN 3F3, Fairfax, VA 22030, USA
- Meredith C. Powell
- ORCiD
- Kavli Institute of Particle Astrophysics and Cosmology, Stanford University , 452 Lomita Mall, Stanford, CA 94305, USA
- George C. Privon
- ORCiD
- National Radio Astronomy Observatory , 520 Edgemont Road, Charlottesville, VA 22903, USA; Department of Astronomy, University of Florida , P.O. Box 112055, Gainesville, FL 32611, USA
- Federica Ricci
- ORCiD
- Instituto de Astrofísica, Facultad de Física, Pontificia Universidad Católica de Chile , Casilla 306, Santiago 22, Chile; Dipartimento di Fisica e Astronomia, Università di Bologna , via Gobetti 93/2, I-40129 Bologna, Italy
- Mara Salvato
- ORCiD
- Max-Planck-Institut für extraterrestrische Physik (MPE), Giessenbachstrasse 1, D-85748 Garching bei Müunchen, Germany
- Kevin Schawinski
- ORCiD
- Modulos AG, Technoparkstrasse 1, CH-8005 Zurich, Switzerland
- Taro Shimizu
- ORCiD
- Max-Planck-Institut für extraterrestrische Physik (MPE), Giessenbachstrasse 1, D-85748 Garching bei Müunchen, Germany
- Krista L. Smith
- ORCiD
- Department of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75205, USA
- Daniel Stern
- ORCiD
- Jet Propulsion Laboratory, California Institute of Technology , 4800 Oak Grove Drive, MS 169-224, Pasadena, CA 91109, USA
- DOI
- https://doi.org/10.3847/1538-4365/ac6c8f
- Journal volume & issue
-
Vol. 261,
no. 1
p. 1
Abstract
The BAT AGN Spectroscopic Survey (BASS) is designed to provide a highly complete census of the key physical parameters of the supermassive black holes (SMBHs) that power local active galactic nuclei (AGNs) ( z ≲ 0.3), including their bolometric luminosity ( L _bol ), black hole (BH) mass ( M _BH ), accretion rates ( L _bol / L _Edd ), line-of-sight gas obscuration ( N _H ), and the distinctive properties of their host galaxies (e.g., star formation rates, masses, and gas fractions). We present an overview of the second data release of BASS (DR2), an unprecedented spectroscopic AGN survey in spectral range, resolution, and sensitivity, including 1449 optical (∼3200 Å–1 μ m) and 233 near-IR (1–2.5 μ m) spectra for the brightest 858 ultrahard X-ray (14–195 keV) selected AGNs across the entire sky and essentially all levels of obscuration. This release provides a highly complete set of key measurements (emission-line measurements and central velocity dispersions), with 99.9% measured redshifts and 98% BH masses estimated (for unbeamed AGNs outside the Galactic plane). The BASS DR2 AGN sample represents a unique census of nearby powerful AGNs, spanning over 5 orders of magnitude in AGN bolometric luminosity ( L _bol ∼ 10 ^40 –10 ^47 erg s ^−1 ), BH mass ( M _BH ∼ 10 ^5 –10 ^10 M _⊙ ), Eddington ratio ( L _bol / L _Edd ≳ 10 ^−5 ), and obscuration ( N _H ∼ 10 ^20 –10 ^25 cm ^−2 ). The public BASS DR2 sample and measurements can thus be used to answer fundamental questions about SMBH growth and its links to host galaxy evolution and feedback in the local universe, as well as open questions concerning SMBH physics. Here we provide a brief overview of the survey strategy, the key BASS DR2 measurements, data sets and catalogs, and scientific highlights from a series of DR2-based works pursued by the BASS team.
Keywords
- Active galactic nuclei
- AGN host galaxies
- X-ray active galactic nuclei
- X-ray surveys
- Sky surveys
- Supermassive black holes