Observations of the 63 micron forbidden O I line in Herbig-Haro objects

Journal Article · Wed Jun 01 00:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166430· OSTI ID:6766740

Cohen, M; Hollenbach, D J; Haas, M R; Erickson, E F

The paper presents observations of the 63 micron forbidden O I line from Herbig-Haro objects and their exciting stars. Forbidden O I 63 micron emission is detected toward the HH-exciting stars T Tau, DG Tau, L1551 IRS 5, and toward the HH objects HH 7-11, HH 42A, and HH 43 which are displaced from their exciting stars. The forbidden O I emission is associated with these flows on the basis of its spatial coincidence and its negative radial velocities. If the exciting stars drive bipolar flows in which the 63 micron emission follows that at 6300 A, the absence of redshifted 63 micron lines from the three exciting stars might indicate that the disks hypothesized to overlie the receding lobes of these flows are still optically thick in the far-infrared. 50 references.

• Research Organization: California Univ., Berkeley (USA); NASA, Ames Research Center, Moffett Field, CA (USA)
• OSTI ID: 6766740
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 329; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
FAR INFRARED RADIATION
INFRARED RADIATION
INFRARED SPECTRA
MASS TRANSFER
NEBULAE
PROTOSTARS
RADIAL VELOCITY
RADIATIONS
RED SHIFT
SPECTRA
STELLAR ACTIVITY
STELLAR WINDS
VELOCITY