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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



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ID: 198576.0, MPI für Astronomie / Publikationen_mpia
The structure of young stellar jets and winds
revealed by high resolution [Fe II] l1.644µm Line
observations
Authors:Pyo, Tae-Soo; Hayashi, Masahiko; Kobayashi, Naoto; Tokunaga, Alan T.; Terada, Hiroshi; Goto, Miwa; Yamashita, Takuya; Itoh, Yoichi; Takami, Hideki; Takato, Naruhisa; Hayano, Yutaka; Gaessler, Wolfgang; Kamata, Yukiko; Minowa, Yosuke; Iye, Masanori
Date of Publication (YYYY-MM-DD):2003
Title of Journal:Astrophysics and Space Science
Journal Abbrev.:Astrophysics and Space Science
Volume:287
Start Page:21
End Page:24
Review Status:not specified
Audience:Not Specified
Abstract / Description:We present high angular resolution spectra
taken along the jets from L1551 IRS 5 and DG Tau
obtained with the Subaru Telescope. The
position-velocity diagrams of the [Fe II]
**lambda; 1.644 µm emission line revealed
remarkably similar characteristics for the two
sources, showing two distinct velocity components
separated from each other in both velocity and
space with the entire emission range blueshifted
with respect to the stellar velocity. The high
velocity component (HVC) has a velocity of -200 -
-300 km s-1 with a narrow line width,
while the low velocity component (LVC) is around
-100 km s-1 exhibitinig a broad line
width. The HVC is located farther away from the
origin and is more extended than the LVC. Our
results suggest that the HVC is a well-collimated
jet originating from the region close to the
star, while the LVC is a widely-opened wind
accelerated in the region near the inner edge of
the accretion disk.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
External Affiliations:Observatory of Japan, 650 North
A`oh**omacr;ok**umacr; Place, Hilo, HI 96720,
USA; E-mail: <EMAIL>pyo@subaru.naoj.org</EMAIL>),
AB(Subaru Telescope, National Astronomical
Observatory of Japan, 650 North
A`oh**omacr;ok**umacr; Place, Hilo, HI 96720,
USA), AC(Subaru Telescope, National Astronomical
Observatory of Japan, 650 North
A`oh**omacr;ok**umacr; Place, Hilo, HI 96720,
USA), AD(Institute for Astronomy, University of
Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822,
USA), AE(Subaru Telescope, National Astronomical
Observatory of Japan, 650 North
A`oh**omacr;ok**umacr; Place, Hilo, HI 96720,
USA), AF(Subaru Telescope, National Astronomical
Observatory of Japan, 650 North
A`oh**omacr;ok**umacr; Place, Hilo, HI 96720,
USA), AG(National Astronomical Observatory of
Japan, Mitaka, Tokyo 181-8588, Japan),
AH(Graduate School of Science and Technology,
Kobe University, Kobe 657-8501, Japan), AI(Subaru
Telescope, National Astronomical Ob! servatory of
Japan, 650 North A`oh**omacr;ok**umacr; Place,
Hilo, HI 96720, USA), AJ(Subaru Telescope,
National Astronomical Observatory of Japan, 650
North A`oh**omacr;ok**umacr; Place, Hilo, HI
96720, USA), AK(National Astronomical Observatory
of Japan, Mitaka, Tokyo 181-8588, Japan),
AL(Subaru Telescope, National Astronomical
Observatory of Japan, 650 North
A`oh**omacr;ok**umacr; Place, Hilo, HI 96720,
USA), AM(National Astronomical Observatory of
Japan, Mitaka, Tokyo 181-8588, Japan),
AN(Department of Astronomy, School of Science,
University of Tokyo, Tokyo 113-0033, Japan),
AO(National Astronomical Observatory of Japan,
Mitaka, Tokyo 181-8588, Japan)
Identifiers:URL:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bi... [ID No:1]
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