Discovery of a disk-collimated bipolar outflow in the proto-planetary nebula IRAS 17106-3046

Sun Kwok; Bruce J. Hrivnak; Kate Y.L. Su

doi:10.1086/317304

Discovery of a disk-collimated bipolar outflow in the proto-planetary nebula IRAS 17106-3046

Sun Kwok, Bruce J. Hrivnak, Kate Y.L. Su

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Abstract

We report the discovery of a collimated bipolar outflow emerging from a visible disk around the proto-planetary nebula IRAS 17106-3046. The radius of the disk, estimated to be 2500 AU at a distance of 4 kpc, is too large for it to be a Keplerian disk created by accretion. The radial intensity profile of the disk suggests that it is consistent with an expanding torus. In contrast to the open-end, butterfly-like lobes commonly seen in bipolar planetary nebulae, the lobes of IRAS 17106-3046 have pointed ends, suggesting a recently formed jet breaking out of the lobes. IRAS 17106-3046 therefore could represent the earliest stage of the bipolar-shaping process during the transition from an asymptotic giant branch star to a planetary nebula.

Original language	English (US)
Pages (from-to)	L149-L152
Journal	Astrophysical Journal
Volume	544
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/317304
State	Published - Dec 1 2000
Externally published	Yes

Keywords

ISM: jets and outflows
Planetary nebulae: general
Stars: AGB and post-AGB
Stars: mass loss
Stars: winds, outflows

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/317304

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@article{a83e83d2d27e4fa598e49c3ed6eb66aa,

title = "Discovery of a disk-collimated bipolar outflow in the proto-planetary nebula IRAS 17106-3046",

abstract = "We report the discovery of a collimated bipolar outflow emerging from a visible disk around the proto-planetary nebula IRAS 17106-3046. The radius of the disk, estimated to be 2500 AU at a distance of 4 kpc, is too large for it to be a Keplerian disk created by accretion. The radial intensity profile of the disk suggests that it is consistent with an expanding torus. In contrast to the open-end, butterfly-like lobes commonly seen in bipolar planetary nebulae, the lobes of IRAS 17106-3046 have pointed ends, suggesting a recently formed jet breaking out of the lobes. IRAS 17106-3046 therefore could represent the earliest stage of the bipolar-shaping process during the transition from an asymptotic giant branch star to a planetary nebula.",

keywords = "ISM: jets and outflows, Planetary nebulae: general, Stars: AGB and post-AGB, Stars: mass loss, Stars: winds, outflows",

author = "Sun Kwok and Hrivnak, {Bruce J.} and Su, {Kate Y.L.}",

note = "Funding Information: We thank Noam Soker for helpful discussions. Support for this work was provided by a grant to S. K. from the Natural Science and Engineering Research Council of Canada and by NASA grant GO-08210.01-97A to B. J. H. from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAG5-26555. B. J. H. acknowledges the support of a University Research Professorship from Valparaiso University and the hospitality of the Steward Observatory, where part of this research was carried out.",

year = "2000",

month = dec,

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doi = "10.1086/317304",

language = "English (US)",

volume = "544",

pages = "L149--L152",

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AU - Kwok, Sun

AU - Hrivnak, Bruce J.

AU - Su, Kate Y.L.

N1 - Funding Information: We thank Noam Soker for helpful discussions. Support for this work was provided by a grant to S. K. from the Natural Science and Engineering Research Council of Canada and by NASA grant GO-08210.01-97A to B. J. H. from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAG5-26555. B. J. H. acknowledges the support of a University Research Professorship from Valparaiso University and the hospitality of the Steward Observatory, where part of this research was carried out.

PY - 2000/12/1

Y1 - 2000/12/1

N2 - We report the discovery of a collimated bipolar outflow emerging from a visible disk around the proto-planetary nebula IRAS 17106-3046. The radius of the disk, estimated to be 2500 AU at a distance of 4 kpc, is too large for it to be a Keplerian disk created by accretion. The radial intensity profile of the disk suggests that it is consistent with an expanding torus. In contrast to the open-end, butterfly-like lobes commonly seen in bipolar planetary nebulae, the lobes of IRAS 17106-3046 have pointed ends, suggesting a recently formed jet breaking out of the lobes. IRAS 17106-3046 therefore could represent the earliest stage of the bipolar-shaping process during the transition from an asymptotic giant branch star to a planetary nebula.

AB - We report the discovery of a collimated bipolar outflow emerging from a visible disk around the proto-planetary nebula IRAS 17106-3046. The radius of the disk, estimated to be 2500 AU at a distance of 4 kpc, is too large for it to be a Keplerian disk created by accretion. The radial intensity profile of the disk suggests that it is consistent with an expanding torus. In contrast to the open-end, butterfly-like lobes commonly seen in bipolar planetary nebulae, the lobes of IRAS 17106-3046 have pointed ends, suggesting a recently formed jet breaking out of the lobes. IRAS 17106-3046 therefore could represent the earliest stage of the bipolar-shaping process during the transition from an asymptotic giant branch star to a planetary nebula.

KW - ISM: jets and outflows

KW - Planetary nebulae: general

KW - Stars: AGB and post-AGB

KW - Stars: mass loss

KW - Stars: winds, outflows

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Discovery of a disk-collimated bipolar outflow in the proto-planetary nebula IRAS 17106-3046

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