Observations at high velocity resolution of the ionized interstellar medium in NGC 4151

M. W. Asif; S. W. Unger; A. Pedlar; C. G. Mundell; A. Robinson; N. A. Walton

doi:10.1093/mnras/284.4.L15

Observations at high velocity resolution of the ionized interstellar medium in NGC 4151

M. W. Asif, S. W. Unger, A. Pedlar, C. G. Mundell, A. Robinson, N. A. Walton

Department of Physics

Research output: Contribution to journal › Article › peer-review

6 Citations (SciVal)

Abstract

We have used the Utrecht Echelle Spectrograph to obtain observations at high velocity resolution (6 km s^-1) of the extended narrow-line region (ENLR) in the Seyfert nucleus of NGC 4151. We compare the velocity structure of the ionized gas with neutral hydrogen observations and confirm that the photoionization of quiescent ambient gas is the preferred mechanism by which to account for the extended region of ionized gas associated with this source. We observe line-splitting in the ENLR of NGC 4151 which is consistent with gas associated with an ionization front expanding outwards from the ENLR.

Original language	English
Pages (from-to)	L15-L20
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Volume	284
Issue number	4
DOIs	https://doi.org/10.1093/mnras/284.4.L15
Publication status	Published - 1 Feb 1997

Keywords

Galaxies: individual: NGC 4151
Galaxies: ISM
Galaxies: Seyfert

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1093/mnras/284.4.L15

Cite this

@article{c981f17677454fa1933a43ab2aba98d1,

title = "Observations at high velocity resolution of the ionized interstellar medium in NGC 4151",

abstract = "We have used the Utrecht Echelle Spectrograph to obtain observations at high velocity resolution (6 km s-1) of the extended narrow-line region (ENLR) in the Seyfert nucleus of NGC 4151. We compare the velocity structure of the ionized gas with neutral hydrogen observations and confirm that the photoionization of quiescent ambient gas is the preferred mechanism by which to account for the extended region of ionized gas associated with this source. We observe line-splitting in the ENLR of NGC 4151 which is consistent with gas associated with an ionization front expanding outwards from the ENLR.",

keywords = "Galaxies: individual: NGC 4151, Galaxies: ISM, Galaxies: Seyfert",

author = "Asif, {M. W.} and Unger, {S. W.} and A. Pedlar and Mundell, {C. G.} and A. Robinson and Walton, {N. A.}",

year = "1997",

month = feb,

day = "1",

doi = "10.1093/mnras/284.4.L15",

language = "English",

volume = "284",

pages = "L15--L20",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "4",

}

TY - JOUR

T1 - Observations at high velocity resolution of the ionized interstellar medium in NGC 4151

AU - Asif, M. W.

AU - Unger, S. W.

AU - Pedlar, A.

AU - Mundell, C. G.

AU - Robinson, A.

AU - Walton, N. A.

PY - 1997/2/1

Y1 - 1997/2/1

N2 - We have used the Utrecht Echelle Spectrograph to obtain observations at high velocity resolution (6 km s-1) of the extended narrow-line region (ENLR) in the Seyfert nucleus of NGC 4151. We compare the velocity structure of the ionized gas with neutral hydrogen observations and confirm that the photoionization of quiescent ambient gas is the preferred mechanism by which to account for the extended region of ionized gas associated with this source. We observe line-splitting in the ENLR of NGC 4151 which is consistent with gas associated with an ionization front expanding outwards from the ENLR.

AB - We have used the Utrecht Echelle Spectrograph to obtain observations at high velocity resolution (6 km s-1) of the extended narrow-line region (ENLR) in the Seyfert nucleus of NGC 4151. We compare the velocity structure of the ionized gas with neutral hydrogen observations and confirm that the photoionization of quiescent ambient gas is the preferred mechanism by which to account for the extended region of ionized gas associated with this source. We observe line-splitting in the ENLR of NGC 4151 which is consistent with gas associated with an ionization front expanding outwards from the ENLR.

KW - Galaxies: individual: NGC 4151

KW - Galaxies: ISM

KW - Galaxies: Seyfert

UR - http://www.scopus.com/inward/record.url?scp=0039181943&partnerID=8YFLogxK

U2 - 10.1093/mnras/284.4.L15

DO - 10.1093/mnras/284.4.L15

M3 - Article

AN - SCOPUS:0039181943

SN - 0035-8711

VL - 284

SP - L15-L20

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

Observations at high velocity resolution of the ionized interstellar medium in NGC 4151

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this