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Program Information for 2021A-0037


PI: Yue Shen, U. of Illinois Urbana-Champaign, shenyue@illinois.edu
Address: Astronomy Department, 1002 W Green Street, Urbana, IL 61801 USA

CoI: Scott F Anderson, U. of Washington
CoI: W. Niel Brandt, Pennsylvania State U.
CoI: Pat Hall, York University
CoI: Keith Horne, U. of St. Andrews
CoI: Juna Kollmeier, Carnegie Observatories
CoI: Tom Dwelly, Max-Planck Institut fuer extraterrestrische Physik
CoI: Catherine Grier, U. of Arizona
CoI: Xin Liu, U. of Illinois Urbana-Champaign
CoI: Paul Martini, Ohio State U.
CoI: Felipe Menanteau, U. of Illinois Urbana-Champaign
CoI: Andrea Merloni, Max Planck Institut fuer extraterrestrische Physik
CoI: Eric Morganson, U. of Illinois Urbana-Champaign
CoI: M Salvato, Max Planck Institut fuer extraterrestrische Physik
CoI: Donald Schneider, Pennsylvania State U.
CoI: Benny Trakhtenbrot, Tel Aviv University
CoI: Jonathan Trump, University of Connecticut
CoI: Youquan Xue, University of Science & Technology of China
CoI: Qian Yang, U. of Illinois Urbana-Champaign
CoI: Jennifer Li, U. of Illinois Urbana-Champaign
CoI: Mirko Krumpe, Leibniz-Institut fuer Astrophysik
CoI: Yasaman Homayouni, University of Connecticut

Title: DECam Imaging of AGN Reverberation Mapping Fields in SDSS-V

Abstract: Accurately measured masses of supermassive black holes (SMBHs) are cornerstones for understanding the coevolution of active galactic nuclei (AGN) and massive galaxies. Mass estimates for distant SMBHs are tied to relationships derived from $sim 60$ AGN at $z<0.3$ with masses measured from reverberation mapping (RM). We are conducting a massive RM program within the upcoming SDSS-V multi-object spectroscopic survey (2020-2025), aiming to dramatically increase the sample size and redshift-luminosity range of reverberation mapped AGN. In RM, a virial BH mass is measured by properly combining the broad-emission-line width with the distance of the line-emitting region from the BH, determined from the time lag between variations of an AGN's ultraviolet/optical continuum and responses of the broad-line emission. Photometric monitoring is a critical component of successful RM: it produces precise continuum flux measurements, increases the spectrophotometric accuracy of the line fluxes, provides more continuum/line cross-correlation points, and can effectively extend the time baseline for lag measurements. We propose DECam monitoring of 4 SDSS-V-RM fields during 2021A-2023B to support the SDSS-V spectroscopic reverberation mapping program. All these fields are high-value extragalactic fields with past and ongoing multi-wavelength observations. In addition to providing the required RM photometry, this program will bridge from earlier optical light curves to LSST to create a legacy dataset of long-term, high- quality light curves with broad applications to AGN and other time- domain science.

Program Type: Long Term/Extragalactic

Scheduled Nights:
Run 1 (2021A):  CT-4m/DECam -- 1n on Mar 30 2021, Apr 02 2021
Run 1 (2021B):  CT-4m/DECam -- 1n on Sep 22 2021
Run 2 (2021A):  CT-4m/DECam -- 1n on Apr 02 2021, Apr 05 2021


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