Giant Bow Shock Pairs Associated with Herbig-Haro Jets

Details Giant Bow Shock Pairs Associated with Herbig-Haro Jets Giant Bow Shock Pairs Associated with Herbig-Haro Jets

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...450l..23o&link_type=abstract

Astrophysical Journal Letters v.450, p.L23

Astronomy and Astrophysics

Astronomy

52

Shock Waves, Ism: Individual Alphanumeric: Hh 1-2, Stars: Pre-Main-Sequence

Scientific paper

Two pairs of giant (linear size ~1 pc) bow shock structures have been discovered, each located symmetrically about HH 1/2 and HH 124. Their Herbig-Haro (HH) nature has been examined by narrowband CCD imaging on and off [S II] lambda lambda 6717, 6731 and/or slit spectroscopy. Multiple bow shocks associated with a few HH objects such as HH 34 are known, and are interpreted as evidence for recurrent outflow activity of the exciting sources. The giant bow shocks associated with HH 1/2 or HH 124 provide further beautiful examples of this phenomenon and, with dynamical ages of about 10,000 yr in both pairs, extend the timescale of HH activity by an order of magnitude.

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