Spectrophotometry of low excitation Herbig-Haro objects

Details Spectrophotometry of low excitation Herbig-Haro objects Spectrophotometry of low excitation Herbig-Haro objects

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...125...23b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 125, no. 1, Aug. 1983, p. 23-28.

Astronomy and Astrophysics

Astrophysics

37

Herbig-Haro Objects, Stellar Spectrophotometry, Emission Spectra, H Lines, Line Spectra, Main Sequence Stars, Shock Waves, Spectral Energy Distribution

Scientific paper

New spectrophotometric observations of the low excitation Herbig-Haro objects H-H 7, H-H 11, and H-H 43 have been obtained with the Palomar 5.08 m telescope and the multichannel spectrometer. The results confirm that these objects show an unusually low degree of ionization (compared to "normal" H-H objects), indicating shock velocities of ≡40 km s-1 or less. In spite of considerable differences between the line spectra of these low excitation and normal "high excitation" H-H objects the low excitation objects show about the same continuum energy distribution as high excitation objects. The rapid rise of Fλ towards shorter wavelengths can be attributed only to either a very hot black body or, more probably, to a two-photon continuum. For both assumptions the agreement between predicted and observed energy distribution in the range 3600 Å ⪉ λ ⪉ 8000 Å is good.

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