Testing models of low-mass star formation - High-resolution far-infrared observations of L1551 IRS 5

1991 ◽  
Vol 376 ◽  
pp. 636 ◽  
Author(s):  
Harold M. Butner ◽  
Neal J., II Evans ◽  
Daniel F. Lester ◽  
Russell M. Levreault ◽  
Stephen E. Strom
2007 ◽  
Vol 3 (S242) ◽  
pp. 164-165
Author(s):  
V. Migenes ◽  
M. A. Trinidad ◽  
R. Valdettaro ◽  
F. Palla ◽  
J. Brand

AbstractBright Rimmed Clouds (BRCs) are clouds that have been compressed by an external ionization-shock front which focuses the neutral gas into compact globules. The boundary layer between the neutral gas and the gas ionized by the incident photons is often called “bright rim” but the clumps are sometimes classified also as speck globules or cometary globules depending on their appearance. Small globules with bright rims have been considered to be potential sites of star formation and have been studied in several individual regions. We present the first high resolution VLA observations of 20 of these BRCs, but only three detections were obtained. The low detection rate seems to support the idea that BRCs produce mostly low-luminosity objects, for which maser emission is weak and episodic, and that the embedded sources are in a more advanced evolutionary phase than class 0 objects.


1982 ◽  
Vol 395 (1 Symposium on) ◽  
pp. 199-203
Author(s):  
Paul M. Harvey ◽  
Bruce A. Wilking ◽  
Martin Cohen

2001 ◽  
Vol 367 (1) ◽  
pp. 311-320 ◽  
Author(s):  
K. Lehtinen ◽  
L. K. Haikala ◽  
K. Mattila ◽  
D. Lemke

2004 ◽  
Vol 600 (1) ◽  
pp. 254-268 ◽  
Author(s):  
Murray F. Campbell ◽  
Paul M. Harvey ◽  
Daniel F. Lester ◽  
David M. Clark

2004 ◽  
Vol 221 ◽  
pp. 29-42
Author(s):  
Masao Saito

Understanding the evolution of cores into protostellar envelopes is important in the star formation study. The initial condition of star formation such as density structure, kinematics, chemical composition, and magnetic field of dense cores can be derived from high resolution molecular line and continuum images at millimeter/submillimeter wavelengths. Besides, most low-mass stars are formed in clusters although the study of protoclusters is still rudimentary because of lack of observations with sufficiently high resolution to resolve individual cores/envelopes. High resolution observations with the coming SMA and ALMA will be crucial to testing and improving theoretical models of low-mass star formation.


1998 ◽  
Vol 508 (1) ◽  
pp. 347-369 ◽  
Author(s):  
K. L. Luhman ◽  
G. H. Rieke ◽  
C. J. Lada ◽  
E. A. Lada

2013 ◽  
Vol 557 ◽  
pp. A35 ◽  
Author(s):  
Eduard I. Vorobyov ◽  
Isabelle Baraffe ◽  
Tim Harries ◽  
Gilles Chabrier

2012 ◽  
Vol 747 (1) ◽  
pp. 22 ◽  
Author(s):  
Charles E. Hansen ◽  
Richard I. Klein ◽  
Christopher F. McKee ◽  
Robert T. Fisher

2010 ◽  
Vol 6 (S270) ◽  
pp. 103-106
Author(s):  
R. Rao ◽  
J.-M. Girart ◽  
D. P. Marrone

AbstractThere have been a number of theoretical and computational models which state that magnetic fields play an important role in the process of star formation. Competing theories instead postulate that it is turbulence which is dominant and magnetic fields are weak. The recent installation of a polarimetry system at the Submillimeter Array (SMA) has enabled us to conduct observations that could potentially distinguish between the two theories. Some of the nearby low mass star forming regions show hour-glass shaped magnetic field structures that are consistent with theoretical models in which the magnetic field plays a dominant role. However, there are other similar regions where no significant polarization is detected. Future polarimetry observations made by the Submillimeter Array should be able to increase the sample of observed regions. These measurements will allow us to address observationally the important question of the role of magnetic fields and/or turbulence in the process of star formation.


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