The environment of FS Tau observed with HST WFPC2 in narrow-band emission line filters

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dc.creatorWoitas, Jens
dc.creatorEisloeffel, Jochen
dc.creatorMundt, Reinhard
dc.creatorRay, Thomas P.
dc.date2001-09-06
dc.date.accessioned2026-07-07T01:59:52Z
dc.date.available2026-07-07T01:59:52Z
dc.descriptionWe present the results of HST WFPC2 observations of FS Tau and its environment obtained in the narrow-band emission line filters H alpha and [S II] (lambda = 6716,6731 Angstrom). Based on these data the morphology of line emission within this region can be studied on a size scale of 0.1" for the first time. Despite the fact that FS Tau A has strong forbidden emission lines, there is no evidence for extended emission at these wavelengths beyond 0.5" from the components of this close T Tauri binary system. In the FS Tau B outflow interesting morphological properties can be studied at high spatial resolution. In this jet we find a structure where circular or elliptical jet knots are correlated with minima of the jet width. The overall width of this jet decreases with distance from the source. The FS Tau B jet is thus a rare example of a jet which may be recollimated far away from its source. The jet is much more prominent in H alpha than in [S II], while the counterjet shows the opposite behaviour. The line ratio H alpha/[S II] increases with lateral distance from the jet axis which is indicative of entrainment of ambient material.
dc.descriptionAccepted by the Astrophysical Journal. 12 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0109096
dc.identifierhttp://arxiv.org/abs/astro-ph/0109096
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/3285
dc.subjectAstrophysics
dc.titleThe environment of FS Tau observed with HST WFPC2 in narrow-band emission line filters
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