Broadband UBVR C I C Photometry of Horizontal-branch and Metal-poor Candidates from the HK and Hamburg/ESO Surveys. I
dc.contributor.author | Beers, Timothy C | |
dc.contributor.author | Flynn, Chris | |
dc.contributor.author | Rossi, Silvia | |
dc.contributor.author | Sommer-Larsen, Jesper | |
dc.contributor.author | Wilhelm, Ronald | |
dc.contributor.author | Marsteller, Brian | |
dc.contributor.author | Sun Lee, Young | |
dc.contributor.author | De Lee, Nathan | |
dc.contributor.author | Krugler, Julie | |
dc.contributor.author | Deliyannis, C P | |
dc.contributor.author | Simmons, Andrew T. | |
dc.contributor.author | Mills, Elisabeth | |
dc.contributor.author | Zickgraf, F-J | |
dc.contributor.author | Holmberg, Johan | |
dc.contributor.author | Frebel, Anna | |
dc.date.accessioned | 2015-12-08T22:48:19Z | |
dc.date.issued | 2007 | |
dc.date.updated | 2015-12-08T11:05:12Z | |
dc.description.abstract | We report broadband UBVand/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. | |
dc.identifier.issn | 0004-637X | |
dc.identifier.uri | http://hdl.handle.net/1885/38286 | |
dc.publisher | IOP Publishing | |
dc.source | Astrophysical Journal, The | |
dc.subject | Keywords: Stars: early-type; Stars: horizontal-branch; Stars: Population II; Techniques: photometric | |
dc.title | Broadband UBVR C I C Photometry of Horizontal-branch and Metal-poor Candidates from the HK and Hamburg/ESO Surveys. I | |
dc.type | Journal article | |
local.bibliographicCitation.lastpage | 139 | |
local.bibliographicCitation.startpage | 128 | |
local.contributor.affiliation | Beers, Timothy C, Michigan State University | |
local.contributor.affiliation | Flynn, Chris, Tuorla Observatory | |
local.contributor.affiliation | Rossi, Silvia, Universidade de Sao Paulo | |
local.contributor.affiliation | Sommer-Larsen, Jesper, University of Copenhagen | |
local.contributor.affiliation | Wilhelm, Ronald, Texas Tech University | |
local.contributor.affiliation | Marsteller, Brian, Michigan State University | |
local.contributor.affiliation | Sun Lee, Young, Michigan State University | |
local.contributor.affiliation | De Lee, Nathan, Michigan State University | |
local.contributor.affiliation | Krugler, Julie, Michigan State University | |
local.contributor.affiliation | Deliyannis, C P, Indiana University | |
local.contributor.affiliation | Simmons, Andrew T., Indiana University | |
local.contributor.affiliation | Mills, Elisabeth, Indiana University | |
local.contributor.affiliation | Zickgraf, F-J, University of Hamburg | |
local.contributor.affiliation | Holmberg, Johan, Max Planck Institute for Astonomy | |
local.contributor.affiliation | Frebel, Anna, College of Physical and Mathematical Sciences, ANU | |
local.contributor.authoremail | repository.admin@anu.edu.au | |
local.contributor.authoruid | Frebel, Anna, u2580468 | |
local.description.embargo | 2037-12-31 | |
local.description.notes | Imported from ARIES | |
local.identifier.absfor | 020110 - Stellar Astronomy and Planetary Systems | |
local.identifier.absseo | 970102 - Expanding Knowledge in the Physical Sciences | |
local.identifier.ariespublication | u3379551xPUB160 | |
local.identifier.citationvolume | 168 | |
local.identifier.doi | 10.1086/509324 | |
local.identifier.scopusID | 2-s2.0-33846810079 | |
local.identifier.uidSubmittedBy | u3379551 | |
local.type.status | Published Version |
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