Large proper-motion infrared [Fe II] emission-line features in GGD 37

S. N. Raines, Dan M. Watson, J. L. Pipher, W. J. Forrest, M. A. Greenhouse, S. Satyapal, Charles E. Woodward, H. A. Smith, J. Fischer, J. A. Goetz, Adam Frank

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We report the detection of proper motions in [Fe II] 1.644 μm emission among the southeasternmost features in the Herbig-Haro object complex GGD 37. Imaging observations were made over a period of 5 yr, at epochs 1993.67, 1996.71, and 1998.68, that reveal proper-motion velocities of 400 ± 200 km s-1 at GGD 37:W2 and 850 ± 200 km s-1 at a newly identified object, designated GGD 37:RWPF 1. We believe the proper-motion velocity of GGD 37:RWPF 1 is the highest found to date for a Herbig-Haro object. The direction of GGD 37: RWPF 1's proper motion is almost due west, away from the nearby young stellar object complex in Cep A East. GGD 37:W2's direction of proper motion is north/northwest, which does not lead back to any of the compact objects in Cep A East.

Original languageEnglish (US)
Pages (from-to)L115-L118
JournalAstrophysical Journal
Issue number2 PART 2
StatePublished - Jan 10 2000

Bibliographical note

Funding Information:
C. E. W. acknowledges support from NSF (AST 94-53354); we also acknowledge support from NASA, the Office of Naval Research, the National Geographic Society, and the Astronomical Society of New York. We also thank Tracy Hodge and Craig McMurtry for their assistance at the telescope. This research has made use of NASA’s Astrophysical Data System Abstract Service.


  • ISM: Herbig-Haro objects
  • ISM: individual (GGD 37)
  • ISM: jets and outflows
  • Infrared: general
  • Stars: formation


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