emission line profiles of some are described. The complex nature
of the interaction of collimated outflows with the interstellar
medium is emphasized.Herbig–Haro
Objects, Cometary Nebulae, and PMS Stars
in the Star-Forming Region NGC 7129
T. Yu. Magakian and T. A. Movsesian
Byurakan Astrophysical Observatory, Academy of Sciences of Armenia, Byurakan, 378433 Armenia
Received June 4, 1996
Abstract—Manifestations
of pre-main-sequence stellar activity in the star-forming region
NGC 7129 are investigated using new observations and data from
the literature. The spectrum of HH 105 has been obtained for the
first time and confirms this to be a Herbig–Haro object with
extremely low excitation and almost negligible radial velocity.
The internal structure of GGD 35 is studied; in particular,
emission line splitting has been detected at the northwest
(trailing) edge of the object. The velocity field in clumps in
GGD 34 is analyzed and is confirmed to have a sinusoidal
character. Other HH objects are briefly discussed. All reflection
and cometary nebulae included in the NGC 7129 group are
investigated. All T Tauri stars detected in this region to date
are listed, and the H
emission line profiles of some are described. The complex nature
of the interaction of collimated outflows with the interstellar
medium is emphasized.
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