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The Open Cluster Chemical Abundances and Mapping Survey. VI. Galactic Chemical Gradient Analysis from APOGEE DR17

Journal Article · · The Astronomical Journal
 [1];  [1];  [1];  [1];  [2];  [3];  [4];  [5];  [6];  [1];  [1];  [7];  [8];  [9];  [10];  [11];  [12];  [13];  [8];  [14] more »;  [13];  [15] « less
  1. Texas Christian University, Fort Worth, TX (United States)
  2. Observatório Nacional, Rio de Janeiro (Brazil); University of Arizona, Tucson, AZ (United States)
  3. Flatiron Institute, New York, NY (United States)
  4. University of Virginia, Charlottesville, VA (United States)
  5. Princeton University, NJ (United States); Observatories of the Carnegie Institution for Science, Pasadena, CA (United States)
  6. University of Utah, Salt Lake City, UT (United States)
  7. Apache Point Observatory and New Mexico State University, Sunspot, NM (United States); Moscow State University (Russia)
  8. Leibniz-Institut für Astrophysik Potsdam (AIP) (Germany)
  9. Instituto de Astrofísica de Canarias (Spain); Universidad de La Laguna (Spain)
  10. Universidad de Concepción (Chile); Universidad de La Serena (Chile)
  11. Malmö University (Sweden)
  12. Universidad Bernardo O'Higgins, Santiago (Chile)
  13. Universidad de Antofagasta (Chile)
  14. Universidad Andres Bello, Santiago (Chile); Vatican Observatory (Italy)
  15. Universidad La Serena (Chile)
+ Show Author Affiliations
The goal of the Open Cluster Chemical Abundances and Mapping (OCCAM) survey is to constrain key Galactic dynamic and chemical evolution parameters by the construction and analysis of a large, comprehensive, uniform data set of infrared spectra for stars in hundreds of open clusters. This sixth contribution from the OCCAM survey presents analysis of SDSS/APOGEE Data Release 17 (DR17) results for a sample of stars in 150 open clusters, 94 of which we designate to be "high-quality" based on the appearance of their color–magnitude diagram. We find the APOGEE DR17-derived [Fe/H] values to be in good agreement with those from previous high-resolution spectroscopic open cluster abundance studies. Using a subset of the high-quality sample, the Galactic abundance gradients were measured for 16 chemical elements, including [Fe/H], for both Galactocentric radius ($$R$$GC) and guiding center radius ($$R$$guide). We find an overall Galactic [Fe/H] versus RGC gradient of -0.073 ± 0.002 dex kpc-1 over the range of 6 > $$R$$GC < 11.5 kpc, and a similar gradient is found for [Fe/H] versus $$R$$guide. Significant Galactic abundance gradients are also noted for O, Mg, S, Ca, Mn, Na, Al, K, and Ce. Our large sample additionally allows us to explore the evolution of the gradients in four age bins for the remaining 15 elements.
Research Organization:
US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF); Spanish Ministry of Science, Innovation and Universities (MCIU); European Regional Development Fund (FEDER)
OSTI ID:
1983167
Journal Information:
The Astronomical Journal, Journal Name: The Astronomical Journal Journal Issue: 3 Vol. 164; ISSN 0004-6256
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
Astronomy &amp; Astrophysics
Chemical abundances
Galactic abundances
Milky Way evolution
Open star clusters