SIMBAD references

2003ApJ...591..275S - Astrophys. J., 591, 275-282 (2003/July-1)

The spatial distribution of fluorescent H2 emission near T Tauri.


Abstract (from CDS):

New subarcsecond far-UV observations of T Tau with Hubble Space Telescope STIS show spatially resolved structures in the 2''x2'' area around the star. The structures are apparent in multiline emission of fluorescent H2pumped by Lyα. One emission structure follows the cavity walls observed around T Tau N in scattered light in the optical. A temperature of ≥1000 K is required to have a high enough population in the H2to produce the observed fluorescent lines; in the cool environment of the T Tau system, shock heating is required to achieve this temperature at distances of a few tens of AU. Fluorescent H2along the cavity wall represents the best evidence to date for the action of low-density, wide opening angle outflows driving cavities into the molecular medium at scales ≤100 AU. A southern region of emission consists of two arcs, with shape and orientation similar to the arcs of H22.12 µm and forbidden-line emission crossing the outflow associated with the embedded system T Tau S. This region is located near the centroid of forbidden-line emission at the blueshifted lobe of the north-south outflow.

Abstract Copyright:

Journal keyword(s): Stars: Formation - Stars: Individual: Constellation Name: T Tauri - Stars: Pre-Main-Sequence - Stars: Winds, Outflows - Ultraviolet: Stars

CDS comments: Fig.4: Regions N1, N2, S1, S2 are not in SIMBAD.

Simbad objects: 9

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