Bik, A.

Kaper, L.

Lenorzer, A.

Martín-Hernández, N.L.

Puga Antolín, E.

Thi, W.F.

Waters, L.B.F.M.

English

Near-infrared surveys of high-mass star-forming regions start to shed light onto their stellar content. A particular class of objects found in these regions, the so-called massive Young Stellar Objects (YSOs) are surrounded by dense circumstellar material. Several near- and mid-infrared diagnostic tools are used to infer the physical characteristics and geometry of this circumstellar matter. Near-infrared hydrogen emission lines provide evidence for a disk-wind. The profiles of the first overtone of the CO band-heads, originating in the inner 10 AU from the central star, are well fitted assuming a Keplerian rotating disk. The mid-infrared spectral energy distribution requires the presence of a more extended envelope containing dust at a temperature of about 200 K. CRIRES observations of CO fundamental absorption lines confirm the presence of a cold envelope. We discuss the evolutionary status of these objects

International Migration, Integration and Social Cohesion online publications

An infrared view of (candidate accretion) disks around massive young stars

https://pure.uva.nl/ws/files/89587401/65246_301790.pdf

An infrared view of (candidate accretion) disks around massive young stars

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International Migration, Integration and Social Cohesion online publications