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  • Beers, Timothy C. (author)

Broadband UBVRCIC photometry of horizontal-branch and metal-poor candidates from the HK and Hamburg/ESO surveys. I.

  • Article/chapterEnglish2007

Publisher, publication year, extent ...

  • American Astronomical Society,2007
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-146642
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-146642URI
  • https://doi.org/10.1086/509324DOI
  • https://lup.lub.lu.se/record/679586URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • We report broadband UBV and/or BVRCIC CCD photometry for a total of 1857 stars in the thick-disk and halo populations of the Galaxy. The majority of our targets were selected as candidate field horizontal-branch or other A-type stars (FHB/ A, N = 576), or candidate low-metallicity stars (N = 1221), from the HK and Hamburg/ESO objective-prism surveys. Similar data for a small number of additional stars from other samples are also reported. These data are being used for several purposes. In the case of the FHB/ A candidates they are used to accurately separate the lower gravity FHB stars from various higher gravity A-type stars, a subsample that includes the so-called blue metal poor stars, halo and thick-disk blue stragglers, main-sequence A-type dwarfs, and Am and Ap stars. These data are also being used to derive photometric distance estimates to high-velocity hydrogen clouds in the Galaxy and for improved measurements of the mass of the Galaxy. Photometric data for the metal-poor candidates are being used to refine estimates of stellar metallicity for objects with available medium-resolution spectroscopy, to obtain distance estimates for kinematic analyses, and to establish initial estimates of effective temperature for analysis of high-resolution spectroscopy of the stars for which this information now exists.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Flynn, Chris (author)
  • Rossi, Silvia (author)
  • Sommer-Larsen, Jesper (author)
  • Wilhelm, Ronald (author)
  • Marsteller, Brian (author)
  • Lee, Young Sun (author)
  • De Lee, Nathan (author)
  • Krugler, Julie (author)
  • Deliyannis, Constantine P. (author)
  • Simmons, Andrew T. (author)
  • Mills, Elisabeth (author)
  • Zickgraf, Franz-Josef (author)
  • Holmberg, Johan (author)
  • Önehag, AnnaUppsala universitet,Institutionen för astronomi och rymdfysik (author)
  • Eriksson, AndersUppsala universitet,Institutionen för astronomi och rymdfysik(Swepub:uu)andeerik (author)
  • Terndrup, Donald M. (author)
  • Salim, Samir (author)
  • Andersen, Johannes (author)
  • Nordström, BirgittaLund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science(Swepub:lu)astr-bno (author)
  • Christlieb, NorbertUppsala universitet,Institutionen för astronomi och rymdfysik (author)
  • Frebel, Anna (author)
  • Rhee, Jaehyon (author)
  • Uppsala universitetInstitutionen för astronomi och rymdfysik (creator_code:org_t)

Related titles

  • In:Astrophysical Journal Supplement Series: American Astronomical Society168:1, s. 128-1390067-00491538-4365

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