SIMBAD references

1999ApJ...517..819W - Astrophys. J., 517, 819-828 (1999/June-1)

Submillimeter imaging of T Tauri's circumbinary disk and the discovery of a protostar in Hind's nebula.

WEINTRAUB D.A., SANDELL G., HUARD T.L., KASTNER J.H., VAN DEN ANCKER M.E. and WATERS R.

Abstract (from CDS):

We have obtained images at 2.2, 450, and 850 µm of the pre-main-sequence binary T Tauri and of Hind's Nebula, which is located less than 1' west of T Tauri. The three maps reveal that the nebulosity around T Tauri is extended, with an FWHM size of several hundred AU in thermal emission and more than 1000 AU in reflected light. Dust clearly connects the circumstellar nebula around T Tauri to the southwestern tip of Hind's Nebula, where we have identified a secondary intensity peak in the submillimeter maps. Calculations of the long-wavelength emissivity demonstrate that the dust emissivity index β is ∼2 for the large nebula but is ∼1.2 for the secondary intensity peak. These results for β suggest that we have found a class I protostar 30" southwest of T Tauri and that star formation is more active in the vicinity of T Tauri than previously had been thought. This protostar is detected directly at submillimeter wavelengths; however, polarization mapping at 2.2 µm demonstrates that the disk-shaped dust cloud around the protostar is illuminated externally at short wavelengths, making it similar to the Orion proplyds.

Abstract Copyright:

Journal keyword(s): Infrared: Stars - ISM: individual (NGC 1555) - Polarization - ISM: Reflection Nebulae - stars: individual (T Tauri) - Stars: Pre-Main-Sequence

Nomenclature: <%M NAME HIND'S PROTOSTAR>

Simbad objects: 11

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2019.10.16-17:53:54

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