On the origin and excitation of the extended nebula surrounding NGC 1275

We use line-of-sight velocity information on the filamentary emission-line nebula of NGC 1275 to infer a dynamical model of the nebula's flow through the surrounding intracluster gas. We detect outflowing gas and flow patterns that match simulations of buoyantly rising bubbles from which we ded...

Full description

Saved in:
Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2006-04, Vol.367 (2), p.433-448
Main Authors: Hatch, N. A., Crawford, C. S., Johnstone, R. M., Fabian, A. C.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
cooling flows
Earth, ocean, space
Exact sciences and technology
Flow velocity
galaxies: clusters: individual: Perseus
galaxies: individual: NGC 1275
intergalactic medium
Mathematical models
Nebulae
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We use line-of-sight velocity information on the filamentary emission-line nebula of NGC 1275 to infer a dynamical model of the nebula's flow through the surrounding intracluster gas. We detect outflowing gas and flow patterns that match simulations of buoyantly rising bubbles from which we deduce that some of the nebula filaments have been drawn out of NGC 1275. We find a radial gradient of the ratio [N ii]λ6584/Hα which may be due to a variation in metallicity, interactions with the surrounding intracluster medium or a hardening of the excitation mechanism. We find no preferred spatial correlation of stellar clusters within the filaments and there is a notable lack of [O iii]λ5007 emission, therefore it is unlikely that the filaments are ionized by stellar ultraviolet.
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2006.09970.x