2000ApJ...540..362W


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.21CET17:46:02

2000ApJ...540..362W - Astrophys. J., 540, 362-371 (2000/September-1)

High-resolution, wide-field imaging of the HL Tauri environment in 13CO (1-0).

WELCH W.J., HARTMANN L., HELFER T. and BRICENO C.

Abstract (from CDS):

We present a high-resolution image of the region near HL Tau in 13CO (1-0) over a region of 3' made with the BIMA array, supplemented by data from the NRAO 12 m telescope to include emission structures with low spatial frequencies. We find evidence for a shell of dimensions ∼2'x1'.5 (∼0.08x0.06 pc), with XZ Tau being the closest known source to its center. The 13CO map is consistent with an expanding bubble that has blown out on the far side from earth. Portions of the bubble wall are seen in optical scattered light. HL Tau is situated in the bubble wall; the evacuated region corresponds to the truncation in the reflection nebula northeast of HL Tau. Although it is thought that a remnant protostellar envelope is still infalling onto HL Tau, the existence of the expanding bubble makes it difficult to interpret the geometry and kinematics of the HL Tau circumstellar material. Our results demonstrate the importance of including low-spatial frequency emission for the interpretation of interferometer maps.

Abstract Copyright:

Journal keyword(s): ISM: Bubbles - ISM: Jets and Outflows - ISM: Molecules - stars: individual (HL Tauri, XZ Tauri) - Stars: Pre-Main-Sequence

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 933 2
2 HBC 393 FU* 04 31 34.077 +18 08 04.90           K3V/M3III 777 2
3 V* V1213 Tau Or* 04 31 37.472 +18 12 24.48   19.78       K7 507 0
4 V* HL Tau TT* 04 31 38.437 +18 13 57.65   16.02 15.10 14.21   K5 1149 0
5 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 796 0
6 V* XZ Tau TT* 04 31 40.0868968022 +18 13 56.642439056     10.40 13.12   M2e+M2e 405 1

    Equat.    Gal    SGal    Ecl

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2020.01.21-17:46:02

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