HST and spectroscopic observations of the L1551 IRS5 jets (HH154)

Abstract

We have carried out a thorough optical study of the closest star formation jet. The inner arcminute surrounding the class 0/I binary protostar L1551 IRS5 and its associated jet (HH154) have been observed using the Hubble Space Telescope with the WFPC2 camera, the ESO New Technology Telescope with the EMMI spectrograph and the Nordic Optical Telescope with the ALFOSC spectrograph. This data set is compared to earlier ground based imaging with the aim to study the evolution of this particular jet, and its possible interaction with the molecular material in the bipolar molecular outflow associated with this source. The velocity field of the jet is mapped out. The highest velocities are found in the vicinity of the recently discovered X-ray source emanating from a shock in this jet. The energy radiated by the X-ray source is compatible with these velocities. The \halpha and \hbeta emission from the jet is used to determine the extinction, which is found to increase inwards in the jet towards the protostar. The extinction towards the X-ray source is consistent with the one determined from the X-ray spectrum.

References in corpus (2)

• The discovery of X-ray emission from the protostellar jet L1551 IRS5 (HH 154)
• Physics of Outflows: the Binary Protostar L1551 IRS5 and its Jets

Cited by in corpus (17)

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• The X-ray puzzle of the L1551 IRS 5 jet
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• Massive compact disks around FU Orionis-type young eruptive stars revealed by ALMA
• X-rays from protostellar jets: emission from continuous flows
• Generation of radiative knots in a randomly pulsed protostellar jet I. Dynamics and energetics
• First Evidence of a Precessing Jet Excavating a Protostellar Envelope
• Spatio-Kinematic Structure at the Base of the [Fe II] Jets From L1551 IRS 5
• Interacting Jets from Binary Protostars
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• Evolution of the atomic component in protostellar outflows
• Methanol in the L1551 Circumbinary Torus
• A Theoretical Model of X-ray Jets from Young Stellar Objects
• Pre main sequence: Accretion & Outflows
• X-ray and HeI 1.0830 mu emission from protostellar jets