body, until the point is reached when thermal energy is sufficient to promote the fusion reactions typical of main-sequence stars. Less massive protostars may take hundreds of millions of years to evolve into stars; massive ones contract more quickly and may take only a few hundred thousand ...
stars: pre-main sequencesubmillimeter: ISMWe present high angular resolution continuum observations of the high-massprotostar NGC 7538S with BIMA and CARMA at 3 and 1.4 mm, VLA observations at1.3, 2, 3.5 and 6 cm, and archive IRAC observations from the Spitzer SpaceObservatory, which detect ...
Theoretical or Mathematical/ accretion disks cosmic dust gravitation numerical analysis pre-main-sequence stars stellar magnetism stellar rotation/ magnetorotational instability accreting envelope protostar large-scale magnetic field gas-dust cloud massive gravitating object hourglass shape rotation axis magnetic-...
While [O I] jets from optically revealedpre-main sequence stars and low-mafss protostars have been de-tected with Herschel/PACS (e.g., Podio et al. 2012; Nisini et al.2015), no such detections have been reported for embedded in-termediate mass protostars.The OMC-2 region in Orion ...
stars : pre-main-sequencesubmillimeterWe present new 1.4 mm imaging with the BIMA 3 array of the high mass protostar NGC 7538S in continuum and several molecular transitions. We resolve the continuum emission at 1.4 mm into an elliptical source with a size of ~8″ × 3″ centered on the ...
pre-main-sequence starsstellar magnetismstellar rotation/ magnetorotational instabilityaccreting envelopeprotostarlarge-scale magnetic fieldWe investigate the role of the magnetic field in the collapse of a gas-dust cloud into a massive gravitating object. Observations of one such object (G31.41) indicate...