Bibcode
López, R.; Acosta-Pulido, J. A.; Estalella, R.; Gómez, G.; García-Lorenzo, B.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 447, Issue 3, p.2588-2602
Advertised on:
3
2015
Citations
2
Refereed citations
2
Description
In this work, we derive the full 3D kinematics of the near-infrared
outflow HH 223, located in the dark cloud Lynds 723 (L723), where a
well-defined quadrupolar CO outflow is found. HH 223 appears projected
on to the two lobes of the east-west CO outflow. The radio continuum
source VLA 2, towards the centre of the CO outflow, harbours a multiple
system of low-mass young stellar objects. One of the components has been
proposed to be the exciting source of the east-west CO outflow. From the
analysis of the kinematics, we get further evidence on the relationship
between the near-infrared and CO outflows and on the location of their
exciting source. The proper motions were derived using multi-epoch,
narrow-band H2 (2.122 μm line) images. Radial velocities
were derived from the 2.122 μm line of the spectra. Because of the
extended (˜5 arcmin), S-shaped morphology of the target, the
spectra were obtained with the multi-object-spectroscopy (MOS) observing
mode using the instrument Long-Slit Intermediate Resolution Infrared
Spectrograph (LIRIS) at the 4.2 m William Herschel Telescope. To our
knowledge, this work is the first time that MOS observing mode has been
successfully used in the near-infrared range for an extended target.
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