The Proper Motions of the Warm Molecular Hydrogen Gas in Herbig-Haro 1

Details The Proper Motions of the Warm Molecular Hydrogen Gas in Herbig-Haro 1 The Proper Motions of the Warm Molecular Hydrogen Gas in Herbig-Haro 1

Sep 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...486l..55n&link_type=abstract

Astrophysical Journal Letters v.486, p.L55

Astronomy and Astrophysics

Astronomy

28

Ism: Individual Alphanumeric: Hh 1, Ism: Jets And Outflows, Ism: Molecules

Scientific paper

We have measured the proper motions of three molecular hydrogen (v = 1--0 2.121 mu m) knots in the Herbig-Haro 1 object using a 4.4 yr baseline (1992--1997). The HH 1F knot, which probably corresponds to the tip of the working surface of HH 1, has a proper motion of 0.19 +/- 0.10 (arcsec yr-1) and a position angle of 315 ^{+29}_{-25} deg. This motion is comparable to that determined in the atomic emission lines of H alpha and [S II] lambda lambda 6717/31, and confirms that the warm molecular H2 gas is partaking of the same motion as the atomic/ionic gas.

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