skip to main content

Title: TARGET SELECTION FOR THE APACHE POINT OBSERVATORY GALACTIC EVOLUTION EXPERIMENT (APOGEE)

The Apache Point Observatory Galactic Evolution Experiment (APOGEE) is a high-resolution infrared spectroscopic survey spanning all Galactic environments (i.e., bulge, disk, and halo), with the principal goal of constraining dynamical and chemical evolution models of the Milky Way. APOGEE takes advantage of the reduced effects of extinction at infrared wavelengths to observe the inner Galaxy and bulge at an unprecedented level of detail. The survey's broad spatial and wavelength coverage enables users of APOGEE data to address numerous Galactic structure and stellar populations issues. In this paper we describe the APOGEE targeting scheme and document its various target classes to provide the necessary background and reference information to analyze samples of APOGEE data with awareness of the imposed selection criteria and resulting sample properties. APOGEE's primary sample consists of {approx}10{sup 5} red giant stars, selected to minimize observational biases in age and metallicity. We present the methodology and considerations that drive the selection of this sample and evaluate the accuracy, efficiency, and caveats of the selection and sampling algorithms. We also describe additional target classes that contribute to the APOGEE sample, including numerous ancillary science programs, and we outline the targeting data that will be included in the public datamore » releases.« less
Authors:
; ; ;  [1] ; ;  [2] ; ; ; ;  [3] ;  [4] ; ;  [5] ;  [6] ;  [7] ;  [8] ;  [9] ; ;  [10] ;  [11] more »; « less
  1. Department of Astronomy, Ohio State University, Columbus, OH 43210 (United States)
  2. Department of Physics and Astronomy, Texas Christian University, Fort Worth, TX 76129 (United States)
  3. Department of Astronomy, University of Virginia, Charlottesville, VA 22904 (United States)
  4. Department of Astronomy, University of Michigan, Ann Arbor, MI 48109 (United States)
  5. Laboratorio Interinstitucional de e-Astronomia-LIneA, Rio de Janeiro, RJ 20921-400 (Brazil)
  6. Yerkes Observatory, University of Chicago, Williams Bay, WI 53191 (United States)
  7. US Naval Observatory, Flagstaff Station, Flagstaff, AZ 86001 (United States)
  8. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)
  9. Lowell Observatory, Flagstaff, AZ 86001 (United States)
  10. Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States)
  11. Instituto de Astrofisica de Canarias, Calle Via Lactea s/n, E-38205 La Laguna, Tenerife (Spain)
Publication Date:
OSTI Identifier:
22136524
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (New York, N.Y. Online); Journal Volume: 146; Journal Issue: 4; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; ALGORITHMS; EFFICIENCY; GALACTIC EVOLUTION; INFRARED SURVEYS; MILKY WAY; RED GIANT STARS; RESOLUTION; SAMPLING; SPECTROSCOPY