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astro-ph2003
Formation scenarios for the young stellar associations between galactic longitudes l = 280-360 deg
Marilia J. Sartori, Jacques R. D. Lepine, Wilton S. Dias
We investigate the spatial distribution, the space velocities and age distribution of the pre-main sequence (PMS) stars belonging to Ophiuchus, Lupus and Chamaeleon star-forming re…
astro-ph2002
Optical polarization and near IR photometry of the proto-planetary nebula Hen 3-1475
Claudia V. Rodrigues, Francisco J. Jablonski, Jane Gregorio-Hetem +2
We present BVRI CCD aperture polarization and near-infrared photometry of the proto-planetary nebula Hen 3-1475. Its intrinsic polarization is high and shows a strong spectral depe…
astro-ph2000
Proper Motions of Pre-Main Sequence Stars in Southern Star-Forming Regions
R. Teixeira, C. Ducourant, M. J. Sartori +4
We present proper motion measurements of pre-main sequence (PMS) stars associated with major star-forming regions of the southern hemisphere (Chamaeleon, Lupus, Upper Scorpius - Op…