Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501

B. Vollmer, M. Soida, Aeree Chung, J. H. Van Gorkom, K. Otmianowska-Mazur, R. Beck, M. Urbanik, J. D.P. Kenney

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

VIVA Hi observations of the Virgo spiral galaxy NGC 4501 are presented. The Hi disk is sharply truncated to the southwest, well within the stellar disk. A region of low surface-density gas, which is more extended than the main Hi disk, is discovered northeast of the galaxy center. These data are compared to existing 6 cm polarized radio continuum emission, Hα, and optical broad band images. We observe a coincidence between the western Hi and polarized emission edges, on the one hand, and a faint Hα emission ridge, on the other. The polarized emission maxima are located within the gaps between the spiral arms and the faint Hα ridge. Based on the comparison of these observations with a sample of dynamical simulations with different values for maximum ram pressure and different inclination angles between the disk and the orbital plane, we conclude that ram pressure stripping can account for the main observed characteristics. NGC 4501 is stripped nearly edge-on, is heading southwest, and is ~ Myr before peak ram pressure, i.e. its closest approach to M 87. The southwestern ridge of enhanced gas surface density and enhanced polarized radio-continuum emission is due to ram pressure compression. It is argued that the faint western Hα emission ridge is induced by nearly edge-on ram pressure stripping. NGC 4501 represents an especially clear example of early stage ram pressure stripping of a large cluster-spiral galaxy.

Original languageEnglish
Pages (from-to)89-106
Number of pages18
JournalAstronomy and Astrophysics
Volume483
Issue number1
DOIs
Publication statusPublished - 2008 May 1

Fingerprint

ram
spiral galaxies
stripping
ridges
radio
continuums
gas density
gas
inclination
compression
galaxies
broadband
orbitals
gases
simulation

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Vollmer, B., Soida, M., Chung, A., Van Gorkom, J. H., Otmianowska-Mazur, K., Beck, R., ... Kenney, J. D. P. (2008). Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501. Astronomy and Astrophysics, 483(1), 89-106. https://doi.org/10.1051/0004-6361:20078139
Vollmer, B. ; Soida, M. ; Chung, Aeree ; Van Gorkom, J. H. ; Otmianowska-Mazur, K. ; Beck, R. ; Urbanik, M. ; Kenney, J. D.P. / Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501. In: Astronomy and Astrophysics. 2008 ; Vol. 483, No. 1. pp. 89-106.
@article{17c8b701d59a4bdda72d5bffbdaba230,
title = "Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501",
abstract = "VIVA Hi observations of the Virgo spiral galaxy NGC 4501 are presented. The Hi disk is sharply truncated to the southwest, well within the stellar disk. A region of low surface-density gas, which is more extended than the main Hi disk, is discovered northeast of the galaxy center. These data are compared to existing 6 cm polarized radio continuum emission, Hα, and optical broad band images. We observe a coincidence between the western Hi and polarized emission edges, on the one hand, and a faint Hα emission ridge, on the other. The polarized emission maxima are located within the gaps between the spiral arms and the faint Hα ridge. Based on the comparison of these observations with a sample of dynamical simulations with different values for maximum ram pressure and different inclination angles between the disk and the orbital plane, we conclude that ram pressure stripping can account for the main observed characteristics. NGC 4501 is stripped nearly edge-on, is heading southwest, and is ~ Myr before peak ram pressure, i.e. its closest approach to M 87. The southwestern ridge of enhanced gas surface density and enhanced polarized radio-continuum emission is due to ram pressure compression. It is argued that the faint western Hα emission ridge is induced by nearly edge-on ram pressure stripping. NGC 4501 represents an especially clear example of early stage ram pressure stripping of a large cluster-spiral galaxy.",
author = "B. Vollmer and M. Soida and Aeree Chung and {Van Gorkom}, {J. H.} and K. Otmianowska-Mazur and R. Beck and M. Urbanik and Kenney, {J. D.P.}",
year = "2008",
month = "5",
day = "1",
doi = "10.1051/0004-6361:20078139",
language = "English",
volume = "483",
pages = "89--106",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "1",

}

Vollmer, B, Soida, M, Chung, A, Van Gorkom, JH, Otmianowska-Mazur, K, Beck, R, Urbanik, M & Kenney, JDP 2008, 'Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501', Astronomy and Astrophysics, vol. 483, no. 1, pp. 89-106. https://doi.org/10.1051/0004-6361:20078139

Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501. / Vollmer, B.; Soida, M.; Chung, Aeree; Van Gorkom, J. H.; Otmianowska-Mazur, K.; Beck, R.; Urbanik, M.; Kenney, J. D.P.

In: Astronomy and Astrophysics, Vol. 483, No. 1, 01.05.2008, p. 89-106.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Pre-peak ram pressure stripping in the Virgo cluster spiral galaxy NGC 4501

AU - Vollmer, B.

AU - Soida, M.

AU - Chung, Aeree

AU - Van Gorkom, J. H.

AU - Otmianowska-Mazur, K.

AU - Beck, R.

AU - Urbanik, M.

AU - Kenney, J. D.P.

PY - 2008/5/1

Y1 - 2008/5/1

N2 - VIVA Hi observations of the Virgo spiral galaxy NGC 4501 are presented. The Hi disk is sharply truncated to the southwest, well within the stellar disk. A region of low surface-density gas, which is more extended than the main Hi disk, is discovered northeast of the galaxy center. These data are compared to existing 6 cm polarized radio continuum emission, Hα, and optical broad band images. We observe a coincidence between the western Hi and polarized emission edges, on the one hand, and a faint Hα emission ridge, on the other. The polarized emission maxima are located within the gaps between the spiral arms and the faint Hα ridge. Based on the comparison of these observations with a sample of dynamical simulations with different values for maximum ram pressure and different inclination angles between the disk and the orbital plane, we conclude that ram pressure stripping can account for the main observed characteristics. NGC 4501 is stripped nearly edge-on, is heading southwest, and is ~ Myr before peak ram pressure, i.e. its closest approach to M 87. The southwestern ridge of enhanced gas surface density and enhanced polarized radio-continuum emission is due to ram pressure compression. It is argued that the faint western Hα emission ridge is induced by nearly edge-on ram pressure stripping. NGC 4501 represents an especially clear example of early stage ram pressure stripping of a large cluster-spiral galaxy.

AB - VIVA Hi observations of the Virgo spiral galaxy NGC 4501 are presented. The Hi disk is sharply truncated to the southwest, well within the stellar disk. A region of low surface-density gas, which is more extended than the main Hi disk, is discovered northeast of the galaxy center. These data are compared to existing 6 cm polarized radio continuum emission, Hα, and optical broad band images. We observe a coincidence between the western Hi and polarized emission edges, on the one hand, and a faint Hα emission ridge, on the other. The polarized emission maxima are located within the gaps between the spiral arms and the faint Hα ridge. Based on the comparison of these observations with a sample of dynamical simulations with different values for maximum ram pressure and different inclination angles between the disk and the orbital plane, we conclude that ram pressure stripping can account for the main observed characteristics. NGC 4501 is stripped nearly edge-on, is heading southwest, and is ~ Myr before peak ram pressure, i.e. its closest approach to M 87. The southwestern ridge of enhanced gas surface density and enhanced polarized radio-continuum emission is due to ram pressure compression. It is argued that the faint western Hα emission ridge is induced by nearly edge-on ram pressure stripping. NGC 4501 represents an especially clear example of early stage ram pressure stripping of a large cluster-spiral galaxy.

UR - http://www.scopus.com/inward/record.url?scp=43049122486&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=43049122486&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:20078139

DO - 10.1051/0004-6361:20078139

M3 - Article

AN - SCOPUS:43049122486

VL - 483

SP - 89

EP - 106

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 1

ER -