ASTROPHYSICS: STUDIES FROM A.L. GYULBUDAGHIAN AND CO-RESEARCHERS YIELD NEW DATA ON ASTROPHYSICS

Science Letter
July 21, 2009

"The hypothesis advanced by V. A. Ambartsumyan according to which
stars are formed from prestellar superdense objects– protostars–
was an alternative to the hypothesis of the 1950’s (and even now,
not much changed) according to which stars are formed by accretion
with subsequent collapse (in various modifications). Ambartsumyan’s
basic inferences were based on an analysis of the observational data
available at that time," scientists writing in the journal Astrophysics
report (see also Astrophysics).

"This paper presents both Ambartsumyan’s pioneering ideas and some
modern hypotheses of star formation. Some results from studies of
molecular clouds and star formation regions are also discussed. One
of the distinctive features of young stellar objects (YSO) is the
outflow of matter from these objects (molecular, in the form of jets,
etc.), a phenomenon whose importance for the evolution of stars was
noted by Ambartsumyan as long ago as 1937," wrote A.L. Gyulbudaghian
and colleagues.

The researchers concluded: "Radial systems of dark globules are
examined, as well as H-H objects associated with star formation
regions, cometary nebulae, and close Trapeziumtype systems (consisting
of YSO).."

Gyulbudaghian and colleagues published their study in
Astrophysics (Star formation and molecular clouds. Astrophysics,
2009;52(2):168-183).

Additional information can be obtained by contacting
A.L. Gyulbudaghian, VA Ambartsumyan Byurakan Astrophysics Observ,
Byurakan, Armenia.

The publisher of the journal Astrophysics can be contacted at:
Springer, Plenum Publishers, 233 Spring St., New York, NY 10013, USA.