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Astron. Astrophys. 350, L43-L46 (1999)


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Letter to the Editor

HH 46/47: Also a parsec scale flow *

Thomas Stanke, Mark J. McCaughrean and Hans Zinnecker

Astrophysikalisches Institut Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany (tstanke@aip.de)

Received 30 August 1999 / Accepted 22 September 1999

Abstract

We report the discovery of a pair of large Herbig-Haro type structures roughly 10 arcminutes (1.3 pc) north-east and south-west of the source driving the well-known HH 46/47 Herbig-Haro jet in new deep emission-line images made using the Wide Field Imager on the ESO/MPG La Silla 2.2-m telescope. These new images suggest that the HH 46/47 outflow is much more extensive than previously assumed, extending over a total of 2.6 pc on the sky, or over 3 pc in space, when deprojected. HH 46/47 thus also belongs to the recently-discovered class of giant Herbig-Haro flows.

Key words: ISM: jets and outflows – stars: formation – ISM: individual objects: HH 46/47

* Based on observations collected at the European Southern Observatory, Chile (ESO No. 62.I-0848)

Send offprint requests to: Th. Stanke

© European Southern Observatory (ESO) 1999

Online publication: October 14, 1999

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