Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apjs...68..229s&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 68, Oct. 1988, p. 229-255.
Astronomy and Astrophysics
Astrophysics
107
Astronomical Photometry, Charge Coupled Devices, Early Stars, Herbig-Haro Objects, Star Formation, Balmer Series, Reflected Waves, Signal To Noise Ratios, Stellar Luminosity, Stellar Spectra
Scientific paper
The results of an optical spectroscopic and photometric study of the star formation region Lynds 1551 and the young stellar object IRS 5 and a high-resolution spectroscopic study of the Herbig-Haro (HH) objects associated with the outflow from this region are reported. The results further establish IRS 5 as the source of the reflected light in the region. Spectral studies suggest that the spectrum of IRS 5 is dominated by the light from an accretion disk analogous to those characterizing objects of the rare class of FU Orionis objects. Analysis of high and medium resolution spectra of the optical 'jet' emanating from IRS 5 strongly suggest that the 'jet' HH objects are the bow shock interfaces between two winds coming from the IRS 5 region. The high-velocity wind is inferred to have a velocity of 440 km/s, and is identified as the stellar wind. High-density clumps in the stellar wind shock a lower-density, but much more pervasive 'second wind' which has an inferred velocity of about 160 km/s.
Anderson Edwin R.
Hartigan Patrick M.
Hartmann Lee W.
Kenyon Scott. J.
Stocke John T.
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