Hubble space telescope WFPC2 imaging of FS Tauri and Haro 6-5B

John E. Krist, Karl R. Stapelfeldt, Christopher J. Burrows, Gilda E. Ballester, John T. Clarke, David Crisp, Robin W. Evans, John S. Gallagher, Richard E. Griffiths, J. Jeff Hester, John G. Hoessel, Jon A. Holtzman, Jeremy R. Mould, Paul A. Scowen, John T. Trauger, Alan M. Watson, James A. Westphal

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


We have observed the field of FS Tauri (Haro 6-5) with the Wide Field Planetary Camera 2 on the Hubble Space Telescope. Centered on Haro 6-5B and adjacent to the nebulous binary system of FS Tauri A there is an extended complex of reflection nebulosity that includes a diffuse, hourglass-shaped structure. H6-5B, the source of a bipolar jet, is not directly visible but appears to illuminate a compact, bipolar nebula which we assume to be a protostellar disk similar to HH 30. The bipolar jet appears twisted, which explains the unusually broad width measured in ground-based images. We present the first resolved photometry of the FS Tau A components at visual wavelengths. The fluxes of the fainter, eastern component are well matched by a 3360 K blackbody with an extinction of Av = 8. For the western star, however, any reasonable, reddened blackbody energy distribution underestimates the K-band photometry by over 2 mag. This may indicate errors in the infrared photometry or errors in our visible measurements due to bright reflection nebulosity very close to the star. The binary was separated by 0″.239 ± 0″.005 at a position angle of 84° ± 1°.5 on 1996 January 25. There is no nebulosity around FS Tau A at the orientation suggested for a disk based on previous, ground-based polarization measurements.

Original languageEnglish (US)
Pages (from-to)841-852
Number of pages12
JournalAstrophysical Journal
Issue number2 PART 1
StatePublished - Jul 10 1998
Externally publishedYes


  • Binaries: visual
  • Circumstellar matter
  • ISM: jets and outflows
  • Stars: individual (FS Tauri, Haro 6-5B)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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