SIMBAD references

2004A&A...427..505A - Astronomy and Astrophysics, volume 427, 505-518 (2004/11-4)

Near-IR speckle imaging of massive young stellar objects.

ALVAREZ C., HOARE M., GLINDEMANN A. and RICHICHI A.

Abstract (from CDS):

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 structures seen in our images are compared with outflow indicators found in the literature. No clear correlation is found between the presence of the reflection nebulosity and any property such as degree of embeddedness. We also note that 3 of the sources show close companions, one of them belonging also to the sample with conical nebula.

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Journal keyword(s): scattering - techniques: high angular resolution - stars: formation - stars: winds, outflows - reflection nebulae - infrared: stars

Nomenclature: Fig.10, Table 1: [AHG2004] GL 961-Fan N=1. Fig.14: [AHG2004] NGC 7538 IRS A (Nos A-C), [AHG2004] NGC 7538 Star a (Nos a-f). Fig.15: [AHG2004] GL 5180 IRS 1 A (Nos A-D). Fig.10, Table 1: [LHR84] GL 961 Wa (Nos Wa, Wb) added.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 92

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