SIMBAD references

1999ApJ...515L..35K - Astrophys. J., 515, L35-L38 (1999/April-2)

Hubble space telescope WFPC2 imaging of XZ Tauri:time evolution of a Herbig-Haro bow shock.

KRIST J.E., STAPELFELDT K.R., BURROWS C.J., HESTER J.J., WATSON A.M., BALLESTER G.E., CLARKE J.T., CRISP D., EVANS R.W., GALLAGHER III J.S., GRIFFITHS R.E., HOESSEL J.G., HOLTZMAN J.A., MOULD J.R., SCOWEN P.A. and TRAUGER J.T.

Abstract (from CDS):

We report observations of dramatic morphological changes in the extremely young Herbig-Haro object ejected by the pre-main-sequence binary XZ Tauri. Hubble Space Telescope images taken in 1995 showed a filled bubble of emission nebulosity extending 4" north-northeast of the system in the direction of a previously known jet. New images obtained in 1998 show that the bubble has undergone a remarkable transition into a limb-brightened structure as it continues its motion away from the binary. The new images suggest that we may be witnessing the initial formation of the postshock cooling zone in a newly emerging Herbig-Haro bow shock system, probably accompanied by significant temporal evolution in the nebula's emission line spectrum.

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Journal keyword(s): Stars: Binaries: Close - Stars: Circumstellar Matter - ISM: Jets and Outflows - Stars: Individual: Constellation Name: XZ Tauri - Stars: Pre-Main-Sequence

Simbad objects: 1

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