.png){kind=icon}
返回
Imaging the HL Tauri disk at lambda=2.7 millimeters with the BIMA array
.png){kind=icon}
OA
AI
DOI：10.1086/310117.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
We have obtained a subarcsecond image of the disk associated with the T Tauri star HL Tau at a wavelength of 2.7 mm using the new high-resolution capability of the BIMA Array. The disk is elongated with a deconvolved Gaussian source size of 1.'' 0 +/- 0.'' 2 x 0 ''.5 +/- 0 ''.2, implying a semimajor axis of 70 +/- 15 AU for a distance of 140 pc; the minor axis may be unresolved. The position angle of the major axis (125 degrees +/- 10 degrees) is orthogonal to the axis of the optical jet. The disk centroid is coincident with the VLA lambda = 3.6 cm source position and nearly coincident with recent measurements of the near-infrared emission peak. The lambda = 2.7 mm images, along with previous interferometric measurements at lambda = 0.87 mm and flux measurements from 10 mu m to 1.3 cm, are well fitted by a simple power-law disk model with a shallow radial dependence to the surface density [Sigma(r) proportional to r(0) to r(-1)], an outer radius between 90 and 160 AU, and a dust opacity law proportional to nu(1).
Keyword:
circumstellar matter
dust, extinction
infrared, stars
radio continuum, stars stars, formation
stars, individual (HL Tauri)
期刊
IF:
5.4
论文数:
8.3W
被引数:
32.0W
机构
暂无机构信息
引用论文
IL-31 plays dual roles in lung inflammation in an OVA-induced murine asthma model.png)
Biology Open
OAAI
Biology OpenIF0
OAAI分享收藏Tensile, compressive and wear behaviour of self-lubricating sintered magnesium based composites
PREAI
分享收藏Non-conventional Inhibitory CD4+Foxp3–PD-1hi T Cells as a Biomarker of Immune Checkpoint Blockade ActivityCancer CellOAAI
Cancer CellIF0
OAAI分享收藏
查看更多内容