The kinematics of the planetary nebulae in the outer regions of NGC 4406

M. Arnaboldi; K. C. Freeman; R. H. Mendez; M. Capaccioli; R. Ciardullo; H. Ford; O. Gerhard; X. Hui; G. H. Jacoby; R. P. Kudritzki; P. J. Quinn

doi:10.1086/178050

The kinematics of the planetary nebulae in the outer regions of NGC 4406

M. Arnaboldi, K. C. Freeman, R. H. Mendez, M. Capaccioli, R. Ciardullo, H. Ford, O. Gerhard, X. Hui, G. H. Jacoby, R. P. Kudritzki, P. J. Quinn

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Abstract

We have measured the velocities of 19 planetary nebulae (PNs) in the outer regions of the giant early-type galaxy NGC 4406 in the Virgo cluster. The kinematics of the outermost regions, at a mean radius of 142″ or 11 kpc, show rapid rotation and a low observed velocity dispersion (∼166 and 96 km s^-1, respectively), compared with the central velocity dispersion of about 210 km s^-1. This supports the classification of this galaxy as an S0. Although this galaxy has a systemic velocity of -227 km s^-1, we found three PNs with velocities close to the mean velocity of the Virgo cluster (about 1400 km s^-1). We argue that these three PNs may be members of an intracluster stellar population in the Virgo cluster.

Original language	English (US)
Pages (from-to)	145-152
Number of pages	8
Journal	Astrophysical Journal
Volume	472
Issue number	1 PART I
DOIs	https://doi.org/10.1086/178050
State	Published - 1996

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/178050

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title = "The kinematics of the planetary nebulae in the outer regions of NGC 4406",

abstract = "We have measured the velocities of 19 planetary nebulae (PNs) in the outer regions of the giant early-type galaxy NGC 4406 in the Virgo cluster. The kinematics of the outermost regions, at a mean radius of 142″ or 11 kpc, show rapid rotation and a low observed velocity dispersion (∼166 and 96 km s-1, respectively), compared with the central velocity dispersion of about 210 km s-1. This supports the classification of this galaxy as an S0. Although this galaxy has a systemic velocity of -227 km s-1, we found three PNs with velocities close to the mean velocity of the Virgo cluster (about 1400 km s-1). We argue that these three PNs may be members of an intracluster stellar population in the Virgo cluster.",

author = "M. Arnaboldi and Freeman, {K. C.} and Mendez, {R. H.} and M. Capaccioli and R. Ciardullo and H. Ford and O. Gerhard and X. Hui and Jacoby, {G. H.} and Kudritzki, {R. P.} and Quinn, {P. J.}",

year = "1996",

doi = "10.1086/178050",

language = "English (US)",

volume = "472",

pages = "145--152",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1 PART I",

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TY - JOUR

T1 - The kinematics of the planetary nebulae in the outer regions of NGC 4406

AU - Arnaboldi, M.

AU - Freeman, K. C.

AU - Mendez, R. H.

AU - Capaccioli, M.

AU - Ciardullo, R.

AU - Ford, H.

AU - Gerhard, O.

AU - Hui, X.

AU - Jacoby, G. H.

AU - Kudritzki, R. P.

AU - Quinn, P. J.

PY - 1996

Y1 - 1996

N2 - We have measured the velocities of 19 planetary nebulae (PNs) in the outer regions of the giant early-type galaxy NGC 4406 in the Virgo cluster. The kinematics of the outermost regions, at a mean radius of 142″ or 11 kpc, show rapid rotation and a low observed velocity dispersion (∼166 and 96 km s-1, respectively), compared with the central velocity dispersion of about 210 km s-1. This supports the classification of this galaxy as an S0. Although this galaxy has a systemic velocity of -227 km s-1, we found three PNs with velocities close to the mean velocity of the Virgo cluster (about 1400 km s-1). We argue that these three PNs may be members of an intracluster stellar population in the Virgo cluster.

AB - We have measured the velocities of 19 planetary nebulae (PNs) in the outer regions of the giant early-type galaxy NGC 4406 in the Virgo cluster. The kinematics of the outermost regions, at a mean radius of 142″ or 11 kpc, show rapid rotation and a low observed velocity dispersion (∼166 and 96 km s-1, respectively), compared with the central velocity dispersion of about 210 km s-1. This supports the classification of this galaxy as an S0. Although this galaxy has a systemic velocity of -227 km s-1, we found three PNs with velocities close to the mean velocity of the Virgo cluster (about 1400 km s-1). We argue that these three PNs may be members of an intracluster stellar population in the Virgo cluster.

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DO - 10.1086/178050

M3 - Article

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EP - 152

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1 PART I

ER -

The kinematics of the planetary nebulae in the outer regions of NGC 4406

Abstract

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