A Herbig-Haro object in the core of M16 /NGC 6611/

Details A Herbig-Haro object in the core of M16 /NGC 6611/ A Herbig-Haro object in the core of M16 /NGC 6611/

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.199..121m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 199, Apr. 1982, p. 121-129.

Astronomy and Astrophysics

Astronomy

20

Herbig-Haro Objects, Ionized Gases, Nitrogen, Spectral Line Width, Stellar Spectra, Sulfur, Astronomical Photography, Collisionless Plasmas, H Alpha Line, Radial Velocity, Star Clusters, Stellar Temperature

Scientific paper

A bright knot emitting strong forbidden S II and forbidden N II lines has been positively identified as an HH object within a neutral lane in M16. This has been called M16 HH 1. Two dominant components of collisionally ionized plasma (shock velocity approximately 85 km/sec and pre-shock density approximately 34/cu cm) originate within this object with values of heliocentric radial velocity of approximately + 10 km/sec and approximately + 90 km/sec. A cavity with flowing walls produced by the wind from a cool star is proposed to explain these observations.

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