SIMBAD references

2007ApJS..168..128B - Astrophys. J., Suppl. Ser., 168, 128-139 (2007/January-0)

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

BEERS T.C., FLYNN C., ROSSI S., SOMMER-LARSEN J., WILHELM R., MARSTELLER B., LEE Y.S., DE LEE N., KRUGLER J., DELIYANNIS C.P., SIMMONS A.T., MILLS E., ZICKGRAF F.-J., HOLMBERG J., ONEHAG A., ERIKSSON A., TERNDRUP D.M., SALIM S., ANDERSEN J., NORDSTROM B., CHRISTLIEB N., FREBEL A. and RHEE J.

Abstract (from CDS):

We report broadband UBV and/or BVRCICCCD 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.

Abstract Copyright:

Journal keyword(s): Stars: Early-Type - Stars: Horizontal-Branch - Stars: Population II - Techniques: Photometric

VizieR on-line data: <Available at CDS (J/ApJS/168/128): table3.dat table4.dat table5.dat>

Simbad objects: 1851

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2007ApJS..168..128B and select 'bookmark this link' or equivalent in the popup menu


2020.09.24-01:54:31

© Université de Strasbourg/CNRS

    • Contact