A search for star formation around the Galactic halo B-type star PHL 346 with the 2dF spectrograph

B. B. Lynn, P. L. Dufton, F. P. Keenan, N. C. Hambly, M. J. Irwin, G. Gilmore, W. R. J. Rolleston

Research output: Contribution to journalArticlepeer-review

Abstract

A preliminary search for stars that may have formed coevally with the apparently young halo B-type star PHL 346 has been performed with the 2dF multifibre spectrograph on the Anglo-Australian Telescope (AAT). Candidates were selected for spectroscopy from APM scans of B and R Schmidt plates centred on PHL 346. A total of 476 stars of spectral type A or F were found; radial velocity estimates and more accurate spectral type assignments narrowed the number of possible coeval candidates to 6 A-type and 14 F-type stars. A statistical analysis of these results using a comparison with a control field suggests that the number of A-type or F-type candidate stars around PHL 346 is not unexpected, and that they need not be associated with PHL 346. A number of ways to improve the project are suggested.
Original languageEnglish
Pages (from-to)1287-1292
JournalMonthly Notices of the Royal Astronomical Society
Volume336
Issue number4
DOIs
Publication statusPublished - 1 Nov 2002

Keywords

  • stars: early-type
  • stars: formation
  • stars: individual: PHL 346
  • stars: kinematics
  • Galaxy: halo

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