2004A&A...414..581H


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.27CET01:29:04

2004A&A...414..581H - Astronomy and Astrophysics, volume 414, 581-589 (2004/2-1)

High resolution millimeter imaging of the proto-planetary nebula He 3-1475.

HUGGINS P.J., MUTHU C., BACHILLER R., FORVEILLE T. and COX P.

Abstract (from CDS):

We report high resolution (1''-2'') imaging of the CO 2-1 line and the millimeter continuum in the proto-planetary nebula He 3-1475. The observations reveal the presence of a massive (∼0.6M) envelope of molecular gas around the origin of the remarkable bipolar jet system seen in optical images with the HST. The CO kinematics are well modeled by an expanding, bi-conical envelope: the prominent, high-velocity (∼50km/s) wings seen in single-dish CO spectra arise where the sides of the bi-cones are projected along the line of sight. The continuum is detected at 1.3mm and 2.6mm and is due to thermal emission from warm (∼80K) circumstellar dust. The structure, kinematics, and expansion time of the envelope provide strong evidence for entrainment of the molecular gas by the high velocity jets. The observations support an evolutionary scenario in which a period of enhanced mass loss by the central star is followed by the development of the bipolar jets which burst through the molecular envelope. The jet-envelope interactions play a crucial role in shaping the subsequent ionized nebula.

Abstract Copyright:

Journal keyword(s): planetary nebulae: general - planetary nebulae: individual: He 3-1475 - ISM: jets and outflows - stars: AGB, post-AGB

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 RAFGL 618 pA* 04 42 53.6245215366 +36 06 53.397219192   16.32   12.59   C-rich 945 0
2 PN M 1-16 PN 07 37 18.902 -09 38 47.96   12.7       ~ 173 0
3 Hen 3-1475 PN 17 45 14.1763468506 -17 56 46.890631888   13.84 12.87     B7e 186 0
4 HD 184738 PN 19 34 45.2337512278 +30 30 58.951476338   10.41 10.44     [WC9] 913 0
5 NGC 7027 PN 21 07 01.8 +42 14 10   9.1 10.9     ~ 2306 1
6 PN KjPn 8 PN 23 24 10.472 +60 57 30.75           ~ 109 0

    Equat.    Gal    SGal    Ecl

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2020.01.27-01:29:04

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