2001ApJ...552L..63G


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.20CET16:41:52

2001ApJ...552L..63G - Astrophys. J., 552, L63-L67 (2001/May-1)

Proper motion of the extremely high velocity SiO j = 2 ⟶ 1 emission in L1448.

GIRART J.M. and ACORD J.M.P.

Abstract (from CDS):

We report the first measurements of proper motions in a molecular outflow by using interferometric rotational line observations. We observed and mapped with the BIMA millimeter array the extremely high velocity (EHV) SiO J=2⟶1 emission associated with the L1448 molecular outflow. Comparisons were made with the Plateau de Bure interferometer maps carried out 8.5 yr earlier. We obtained proper motions of up to 0".12 yr–1, which imply absolute velocities of 180 km.s–1 and an outflow inclination of 21° to the plane of the sky, in agreement with previous modeling of the CO emission. These proper motions suggests that the EHV emission in L1448 has a short timescale. These results strongly suggest that with the new generation of powerful interferometric arrays, the combination of high spectral and angular resolution with high sensitivity will permit a detailed three-dimensional picture of the kinematics of molecular outflows.

Abstract Copyright:

Journal keyword(s): ISM: Individual: Alphanumeric: L1448 - ISM: Jets and Outflows - ISM: Molecules - Radio Lines: ISM - Stars: Formation

Simbad objects: 9

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Number of rows : 9

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 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3488 3
3 LDN 1448 DNe 03 22.5 +30 35           ~ 461 0
4 [SDA2014] West8 Y*O 03 25 36.22 +30 45 15.7           ~ 94 0
5 LDN 1448NA smm 03 25 36.49 +30 45 22.2           ~ 170 1
6 IRAS 03225+3034 FIR 03 25 36.49 +30 45 22.2           ~ 149 1
7 SSTc2d J032536.4+304522 Y*O 03 25 36.49 +30 45 22.2           ~ 184 1
8 NAME LDN 1448-mm Y*O 03 25 38.83 +30 44 06.2           ~ 294 0
9 [SDA2014] West4 Y*O 03 25 38.83 +30 44 06.2           ~ 241 1

    Equat.    Gal    SGal    Ecl

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2020.01.20-16:41:53

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