Summary: Mon. Not. R. Astron. Soc. 338, 57­66 (2003)
A multi-epoch near-infrared study of the HH 7­11 protostellar outflow
Tigran Khanzadyan,1
Michael D. Smith,1
Christopher J. Davis,2
Roland Gredel,3
Thomas Stanke4
and Antonio Chrysostomou5
1Armagh Observatory, College Hill, Armagh BT61 9DG
2Joint Astronomy Centre, 660 N. A`oh¯ok¯u Place, University Park, Hilo, Hawaii 96720, USA
3Max-Planck Institut f¨ur Astronomie, K¨onigstuhl 17, D-69117 Heidelberg, Germany
4Max-Planck Institut f¨ur Radioastronomie, Auf dem H¨ugel 69, D-53121 Bonn, Germany
5Department of Physical Sciences, University of Hatfield, Herts AL10 9AB
Accepted 2002 August 21. Received 2002 August 19; in original form 2002 March 15
ABSTRACT
We present near-infrared observations of the protostellar outflow HH 7­11 in the molecular
hydrogen 1­0 S(1) and [Fe II] 1.644-µm emission lines. Images at four epochs spread over
11 yr constrain the proper motions of the H2 emission knots to be less than 0.045 arcsec yr-1
,
corresponding to tangential speeds of under 47 km s-1

Source: Armagh Observatory

Collections: Physics