IDENTIFICATION OF YOUNG STAR OBJECTS NEAR DUST BUBBLE N10

Models and Observations of the Chemistry near Young Stellar Objects

Near-IR speckle imaging of massive young stellar objects

We present near-IR speckle images of 21 massive Young Stellar Objects (YSOs) associated with outflows. The aim of this study is to search for sub-arcsecond reflection nebulae associated with the outflow cavity. We find that 6 of the massive YSOs show a conical nebula which can be interpreted in terms of reflected light from the dusty walls of the outflow cavity. In all cases, the small scale st...

Star clusters near intermediate and high mass young stars

A number of 43 high mass O-type stars within 2 kpc of the Sun are not known to be current, nor former member of clusters/OB-associations. We try to elucidate their formation history by looking deeper into their local stellar environment, by evaluating their spatial velocities, and their location in the Galaxy with respect to young stellar clusters. We find that 5 stars are in fact member of a s...

Kohonen Self Organizing for Automatic Identification of Cartographic Objects

Automatic identification and localization of cartographic objects in aerial and satellite images have gained increasing attention in recent years in digital photogrammetry and remote sensing. Although the automatic extraction of man made objects in essence is still an unresolved issue, the man made objects can be extracted from aerial photos and satellite images. Recently, the high-resolution s...

The Dust and Gas Content of a Disk around the Young Star HR 4796A

We have used the James Clerk Maxwell Telescope in Hawaii to search at submillimeter wavelengths for continuum emission from dust, and spectral line emission from carbon monoxide (CO) gas, in the neighborhood of HR 4796A. This young star has a dusty disk with a central cavity, where planets may have formed. We detect the dust component at a wavelength of 850 μm, and the inferred mass of solid ma...