JETS AND OUTFLOWS FROM STAR TO CLOUD: OBSERVATIONS CONFRONT THEORY
A. Frank (University of Rochester, Physics and Astronomy, Rochester, United States),
S. Cabrit (ERMA, Observatoire de Paris, France),
T. Ray (Dublin Institute for Advanced Studies, Ireland),
H. Arce (Yale, United States),
J. Eislöffel (Thüringer Landessternwarte, Germany),
S. Lebedev (Imperial College London, United Kingdom),
F. Bacciotti (INAF-Osservatorio Astrofisico di Arcetri, Italy),
M. Guedel (University of Vienna, Austria),
B. Nisini (INAF-Osservatorio Astronomico di Roma, Italy),
J. Bally (University of Colorado at Boulder, United States),
P. Hartigan (Rice University, United States),
A.C. Raga (ICN, Universidad Nacional Autonoma de Mexico, Mexico)
In this review we focus on the role of jets and outflows in the star formation process. Are jets/outflows
merely an epiphenomenon associated with star formation or do they play an important role in mediating
the physics of assembling stars both individually and in a global sense? To address our questions
we focus on the current state of observations and on the important points of contact between these
observations and theory. We review the Jet/Outflow phenomena by organizing our questions into 3
length-scale domains: Source and Disk Scales (1-10^2 AU) where the connection with protostellar and
disk evolution theories is paramount; Envelope Scales (10^2-10^5 AU) where the chemistry and propagation
shed further light on the jet launch process, its variability and impact on the infalling envelope.
Parent Cloud Scales (10^5-10^6 AU) where issues of large scale feedback on the global star formation
process become important. In addition to describing results from established platforms like the HST
(multi-epoch imaging and spectroscopy) we also review new results from facilities that are currently
coming on-line (ALMA, the Jansky Array (EVLA), e-MERLIN. In describing these observations we look
to the future and consider the questions that these new facilities can address. We also review results
on jet dynamics from emerging field of High Energy Density Laboratory Astrophysics (HEDLA) that
provide direct insights into the 3-D dynamics of fully magnetized, hypersonic, radioactive outflows.
back to the program