A dark galaxy in the virgo cluster imaged at 21-cm

R. F. Minchin; M. J. Disney; J. I. Davies; A. R. Marble; C. D. Impey; P. J. Boyce; D. A. Garcia; M. Grossi; C. A. Jordan; R. H. Lang; S. Roberts; S. Sabatini; W. Van Driel

doi:10.1007/978-1-4020-5573-7_15

A dark galaxy in the virgo cluster imaged at 21-cm

R. F. Minchin, M. J. Disney, J. I. Davies, A. R. Marble, C. D. Impey, P. J. Boyce, D. A. Garcia, M. Grossi, C. A. Jordan, R. H. Lang, S. Roberts, S. Sabatini, W. Van Driel

Astronomy

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

Abstract

Dark Matter supposedly dominates the extragalactic Universe (Peebles 1993; Peacock 1998; Moore et al. 1999; D’Onghi & Lake 2004), yet no dark structure of galactic proportions has ever been convincingly identified. Earlier (Minchin et al. 2005) we suggested that VIRGOHI 21, a 21-cm source we found in the Virgo Cluster at Jodrell Bank using single-dish observations (Davies et al. 2004), was probably such a dark galaxy because of its broad line-width (∼200 km s⁻¹) unaccompanied by any visible gravitational source to account for it. We have now imaged VIRGOHI 21 in the neutral-hydrogen line, and have found what appears to be a dark, edge-on, spinning disc with the mass and diameter of a typical spiral galaxy. Moreover the disc has unquestionably interacted with NGC 4254, a luminous spiral with an odd one-armed morphology, but lacking the massive interactor normally linked with such a feature. Published numerical models (Vollmer et al. 2005) of NGC 4254 call for a close interaction ∼10⁸ years ago with a perturber of ∼10¹¹ solar masses. This we take as further, independent evidence for the massive nature of VIRGOHI 21.

Original language	English (US)
Pages (from-to)	101-106
Number of pages	6
Journal	Astrophysics and Space Science Proceedings
Issue number	202409
DOIs	https://doi.org/10.1007/978-1-4020-5573-7_15
State	Published - 2007
Event	International Conference on Island Universe: Structure and Evolution of Disk Galaxies, 2005 - Terschelling, Netherlands Duration: Jul 3 2005 → Jul 5 2005

Keywords

Dark matter
Galaxies: Intergalactic medium
Galaxies: Peculiar

ASJC Scopus subject areas

Physics and Astronomy(all)
Computer Science Applications
Spectroscopy
Space and Planetary Science
Nuclear and High Energy Physics

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10.1007/978-1-4020-5573-7_15

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A dark galaxy in the virgo cluster imaged at 21-cm. / Minchin, R. F.; Disney, M. J.; Davies, J. I.; Marble, A. R.; Impey, C. D.; Boyce, P. J.; Garcia, D. A.; Grossi, M.; Jordan, C. A.; Lang, R. H.; Roberts, S.; Sabatini, S.; Van Driel, W.

In: Astrophysics and Space Science Proceedings, No. 202409, 2007, p. 101-106.

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

@article{af24bba32cf143aba0abefce723ccc16,

title = "A dark galaxy in the virgo cluster imaged at 21-cm",

abstract = "Dark Matter supposedly dominates the extragalactic Universe (Peebles 1993; Peacock 1998; Moore et al. 1999; D{\textquoteright}Onghi & Lake 2004), yet no dark structure of galactic proportions has ever been convincingly identified. Earlier (Minchin et al. 2005) we suggested that VIRGOHI 21, a 21-cm source we found in the Virgo Cluster at Jodrell Bank using single-dish observations (Davies et al. 2004), was probably such a dark galaxy because of its broad line-width (∼200 km s−1) unaccompanied by any visible gravitational source to account for it. We have now imaged VIRGOHI 21 in the neutral-hydrogen line, and have found what appears to be a dark, edge-on, spinning disc with the mass and diameter of a typical spiral galaxy. Moreover the disc has unquestionably interacted with NGC 4254, a luminous spiral with an odd one-armed morphology, but lacking the massive interactor normally linked with such a feature. Published numerical models (Vollmer et al. 2005) of NGC 4254 call for a close interaction ∼108 years ago with a perturber of ∼1011 solar masses. This we take as further, independent evidence for the massive nature of VIRGOHI 21.",

keywords = "Dark matter, Galaxies: Intergalactic medium, Galaxies: Peculiar",

author = "Minchin, {R. F.} and Disney, {M. J.} and Davies, {J. I.} and Marble, {A. R.} and Impey, {C. D.} and Boyce, {P. J.} and Garcia, {D. A.} and M. Grossi and Jordan, {C. A.} and Lang, {R. H.} and S. Roberts and S. Sabatini and {Van Driel}, W.",

note = "Funding Information: Acknowledgements We thank the NFRA for use of the WSRT and PPARC for financial support. We would like to thank the following for useful comments: Virginia Kilborn, Erwin de Blok, Martin Zwaan and Greg Bothun. Arecibo Observatory is part of NAIC, which is operated by Cornell University under a cooperative agreement with the NSF. Publisher Copyright: {\textcopyright} 2007, Springer Netherlands. All rights reserved.; International Conference on Island Universe: Structure and Evolution of Disk Galaxies, 2005 ; Conference date: 03-07-2005 Through 05-07-2005",

year = "2007",

doi = "10.1007/978-1-4020-5573-7_15",

language = "English (US)",

pages = "101--106",

journal = "Astrophysics and Space Science Proceedings",

issn = "1570-6591",

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T1 - A dark galaxy in the virgo cluster imaged at 21-cm

AU - Minchin, R. F.

AU - Disney, M. J.

AU - Davies, J. I.

AU - Marble, A. R.

AU - Impey, C. D.

AU - Boyce, P. J.

AU - Garcia, D. A.

AU - Grossi, M.

AU - Jordan, C. A.

AU - Lang, R. H.

AU - Roberts, S.

AU - Sabatini, S.

AU - Van Driel, W.

N1 - Funding Information: Acknowledgements We thank the NFRA for use of the WSRT and PPARC for financial support. We would like to thank the following for useful comments: Virginia Kilborn, Erwin de Blok, Martin Zwaan and Greg Bothun. Arecibo Observatory is part of NAIC, which is operated by Cornell University under a cooperative agreement with the NSF. Publisher Copyright: © 2007, Springer Netherlands. All rights reserved.

PY - 2007

Y1 - 2007

N2 - Dark Matter supposedly dominates the extragalactic Universe (Peebles 1993; Peacock 1998; Moore et al. 1999; D’Onghi & Lake 2004), yet no dark structure of galactic proportions has ever been convincingly identified. Earlier (Minchin et al. 2005) we suggested that VIRGOHI 21, a 21-cm source we found in the Virgo Cluster at Jodrell Bank using single-dish observations (Davies et al. 2004), was probably such a dark galaxy because of its broad line-width (∼200 km s−1) unaccompanied by any visible gravitational source to account for it. We have now imaged VIRGOHI 21 in the neutral-hydrogen line, and have found what appears to be a dark, edge-on, spinning disc with the mass and diameter of a typical spiral galaxy. Moreover the disc has unquestionably interacted with NGC 4254, a luminous spiral with an odd one-armed morphology, but lacking the massive interactor normally linked with such a feature. Published numerical models (Vollmer et al. 2005) of NGC 4254 call for a close interaction ∼108 years ago with a perturber of ∼1011 solar masses. This we take as further, independent evidence for the massive nature of VIRGOHI 21.

AB - Dark Matter supposedly dominates the extragalactic Universe (Peebles 1993; Peacock 1998; Moore et al. 1999; D’Onghi & Lake 2004), yet no dark structure of galactic proportions has ever been convincingly identified. Earlier (Minchin et al. 2005) we suggested that VIRGOHI 21, a 21-cm source we found in the Virgo Cluster at Jodrell Bank using single-dish observations (Davies et al. 2004), was probably such a dark galaxy because of its broad line-width (∼200 km s−1) unaccompanied by any visible gravitational source to account for it. We have now imaged VIRGOHI 21 in the neutral-hydrogen line, and have found what appears to be a dark, edge-on, spinning disc with the mass and diameter of a typical spiral galaxy. Moreover the disc has unquestionably interacted with NGC 4254, a luminous spiral with an odd one-armed morphology, but lacking the massive interactor normally linked with such a feature. Published numerical models (Vollmer et al. 2005) of NGC 4254 call for a close interaction ∼108 years ago with a perturber of ∼1011 solar masses. This we take as further, independent evidence for the massive nature of VIRGOHI 21.

KW - Dark matter

KW - Galaxies: Intergalactic medium

KW - Galaxies: Peculiar

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U2 - 10.1007/978-1-4020-5573-7_15

DO - 10.1007/978-1-4020-5573-7_15

M3 - Conference article

AN - SCOPUS:85033704336

SP - 101

EP - 106

JO - Astrophysics and Space Science Proceedings

JF - Astrophysics and Space Science Proceedings

SN - 1570-6591

IS - 202409

T2 - International Conference on Island Universe: Structure and Evolution of Disk Galaxies, 2005

Y2 - 3 July 2005 through 5 July 2005

ER -

A dark galaxy in the virgo cluster imaged at 21-cm

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Keywords

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