Kinematics of planetary nebulae in M51's tidal debris

Patrick R. Durrell; J. Christopher Mihos; John J. Feldmeier; George H. Jacoby; Robin Ciardullo

doi:10.1086/344612

Kinematics of planetary nebulae in M51's tidal debris

Patrick R. Durrell, J. Christopher Mihos, John J. Feldmeier, George H. Jacoby, Robin Ciardullo

Research output: Contribution to journal › Review article › peer-review

28 Scopus citations

Abstract

We report the results of a radial velocity survey of planetary nebulae (PNe) located in the tidal features of the well-known interacting system NGC 5194/95 (M51). We find clear kinematic evidence that M51's north-western tidal debris consists of two discrete structures that overlap in projection - NGC 5195's own tidal tail and diffuse material stripped from NGC 5194. We compare these kinematic data to a new numerical simulation of the M51 system and show that the data are consistent with the classic "single-passage" model for the encounter, with a parabolic satellite trajectory and a 2 : 1 mass ratio. We also comment on the spectra of two unusual objects: a high-velocity PN that may be associated with NGC 5194's halo and a possible interloping high-redshift galaxy.

Original language	English (US)
Pages (from-to)	170-183
Number of pages	14
Journal	Astrophysical Journal
Volume	582
Issue number	1 I
DOIs	https://doi.org/10.1086/344612
State	Published - Jan 1 2003

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/344612

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title = "Kinematics of planetary nebulae in M51's tidal debris",

abstract = "We report the results of a radial velocity survey of planetary nebulae (PNe) located in the tidal features of the well-known interacting system NGC 5194/95 (M51). We find clear kinematic evidence that M51's north-western tidal debris consists of two discrete structures that overlap in projection - NGC 5195's own tidal tail and diffuse material stripped from NGC 5194. We compare these kinematic data to a new numerical simulation of the M51 system and show that the data are consistent with the classic {"}single-passage{"} model for the encounter, with a parabolic satellite trajectory and a 2 : 1 mass ratio. We also comment on the spectra of two unusual objects: a high-velocity PN that may be associated with NGC 5194's halo and a possible interloping high-redshift galaxy.",

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TY - JOUR

T1 - Kinematics of planetary nebulae in M51's tidal debris

AU - Durrell, Patrick R.

AU - Mihos, J. Christopher

AU - Feldmeier, John J.

AU - Jacoby, George H.

AU - Ciardullo, Robin

PY - 2003/1/1

Y1 - 2003/1/1

N2 - We report the results of a radial velocity survey of planetary nebulae (PNe) located in the tidal features of the well-known interacting system NGC 5194/95 (M51). We find clear kinematic evidence that M51's north-western tidal debris consists of two discrete structures that overlap in projection - NGC 5195's own tidal tail and diffuse material stripped from NGC 5194. We compare these kinematic data to a new numerical simulation of the M51 system and show that the data are consistent with the classic "single-passage" model for the encounter, with a parabolic satellite trajectory and a 2 : 1 mass ratio. We also comment on the spectra of two unusual objects: a high-velocity PN that may be associated with NGC 5194's halo and a possible interloping high-redshift galaxy.

AB - We report the results of a radial velocity survey of planetary nebulae (PNe) located in the tidal features of the well-known interacting system NGC 5194/95 (M51). We find clear kinematic evidence that M51's north-western tidal debris consists of two discrete structures that overlap in projection - NGC 5195's own tidal tail and diffuse material stripped from NGC 5194. We compare these kinematic data to a new numerical simulation of the M51 system and show that the data are consistent with the classic "single-passage" model for the encounter, with a parabolic satellite trajectory and a 2 : 1 mass ratio. We also comment on the spectra of two unusual objects: a high-velocity PN that may be associated with NGC 5194's halo and a possible interloping high-redshift galaxy.

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DO - 10.1086/344612

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JO - Astrophysical Journal

JF - Astrophysical Journal

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Kinematics of planetary nebulae in M51's tidal debris

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