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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The Time-domain Spectroscopic Survey: Target Selection for Repeat Spectroscopy
Astronomical Journal, Volume 155, No. 1, Article 6, Year 2018
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Description
As astronomers increasingly exploit the information available in the time domain, spectroscopic variability in particular opens broad new channels of investigation. Here we describe the selection algorithms for all targets intended for repeat spectroscopy in the Time Domain Spectroscopic Survey (TDSS), part of the extended Baryon Oscillation Spectroscopic Survey within the Sloan Digital Sky Survey (SDSS)-IV. Also discussed are the scientific rationale and technical constraints leading to these target selections. The TDSS includes a large "repeat quasar spectroscopy" (RQS) program delivering ∼13,000 repeat spectra of confirmed SDSS quasars, and several smaller "few-epoch spectroscopy" (FES) programs targeting specific classes of quasars as well as stars. The RQS program aims to provide a large and diverse quasar data set for studying variations in quasar spectra on timescales of years, a comparison sample for the FES quasar programs, and an opportunity for discovering rare, serendipitous events. The FES programs cover a wide variety of phenomena in both quasars and stars. Quasar FES programs target broad absorption line quasars, high signal-to-noise ratio normal broad line quasars, quasars with double-peaked or very asymmetric broad emission line profiles, binary supermassive black hole candidates, and the most photometrically variable quasars. Strongly variable stars are also targeted for repeat spectroscopy, encompassing many types of eclipsing binary systems, and classical pulsators like RR Lyrae. Other stellar FES programs allow spectroscopic variability studies of active ultracool dwarf stars, dwarf carbon stars, and white dwarf/M dwarf spectroscopic binaries. We present example TDSS spectra and describe anticipated sample sizes and results. © 2017 The American Astronomical Society. All rights reserved.
Authors & Co-Authors
Green, Paul J.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Anderson, Scott F.
United States, Seattle
University of Washington
Eracleous, Michael C.
United States, University Park
Pennsylvania State University
Runnoe, Jessie C.
United States, Ann Arbor
University of Michigan, Ann Arbor
Brandt, William Nielsen
United States, University Park
Pennsylvania State University
Badenes, Carles
United States, Pittsburgh
University of Pittsburgh
Greene, Jenny E.
United States, Princeton
Princeton University
Morganson, Eric P.
United States, Urbana
University of Illinois Urbana-champaign
Schwope, Axel D.
Germany, Potsdam
Leibniz Institute for Astrophysics Potsdam
Shen, Yue
United States, Urbana
University of Illinois Urbana-champaign
Amaro, Rachael C.
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
United States, Urbana
University of Illinois Urbana-champaign
Filiz Ak, Nurten
Turkey, Kayseri
Erciyes Üniversitesi
Grier, Catherine J.
United States, University Park
Pennsylvania State University
McGraw, Sean M.
United States, University Park
Pennsylvania State University
Dawson, Kyle S.
United States, Salt Lake City
The University of Utah
Patrick B. Hall, Patrick B.
Canada, Toronto
York University
Vivek, Mariappan
United States, Salt Lake City
The University of Utah
Myers, Adam D.
United States, Laramie
University of Wyoming
P. Schneider, Donald P.
United States, University Park
Pennsylvania State University
Stassun, Keivan Guadalupe
United States, Nashville
Vanderbilt University
United States, Nashville
Fisk University
Bershady, Matthew A.
United States, Madison
University of Wisconsin-madison
Blanton, Michael R.
United States, New York
New York University
Seo, Hee-jong
United States, Athens
Ohio University
Tinker, Jeremy L.
United States, New York
New York University
Fernández-Trincado, José G.
Chile, Biobio
Universidad de Concepcion
France, Besancon
Observatoire de Besancon
Chambers, Kenneth C.
United States, Honolulu
University of Hawaiʻi at Mānoa
Kaiser, Nicholas
United States, Honolulu
University of Hawaiʻi at Mānoa
Kudritzki, Rolf Peter
United States, Honolulu
University of Hawaiʻi at Mānoa
Magnier, Eugene A.
United States, Honolulu
University of Hawaiʻi at Mānoa
Metcalfe, Nigel
United Kingdom, Durham
Durham University
Waters, Christopher Z.
United States, Honolulu
University of Hawaiʻi at Mānoa
Statistics
Citations: 18
Authors: 31
Affiliations: 23
Identifiers
Doi:
10.3847/1538-3881/aa99da
ISSN:
00046256
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Approach
Quantitative