Revealing the velocity structure of the filamentary nebula in NGC 1275 in its entirety

M. Gendron-Marsolais; J. Hlavacek-Larrondo; T. B. Martin; L. Drissen; M. McDonald; A. C. Fabian; A. C. Edge; S. L. Hamer; B. McNamara; G. Morrison

doi:10.1093/mnrasl/sly084

Revealing the velocity structure of the filamentary nebula in NGC 1275 in its entirety

M. Gendron-Marsolais, J. Hlavacek-Larrondo, T. B. Martin, L. Drissen, M. McDonald, A. C. Fabian, A. C. Edge, S. L. Hamer, B. McNamara, G. Morrison

Department of Physics

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Abstract

We have produced for the first time a detailed velocity map of the giant filamentary nebula surrounding NGC 1275, the Perseus cluster's brightest galaxy, and revealed a previously unknown rich velocity structure across the entire nebula. These newobservations were obtained with the optical imaging Fourier transform spectrometer SITELLE at CFHT. With its wide field of view (~11 arcmin×11 arcmin), SITELLE is the only integral field unit spectroscopy instrument able to cover the 80 kpc × 55 kpc ( 3.8 arcmin×2.6 arcmin) large nebula in NGC 1275. Our analysis of these observations shows a smooth radial gradient of the [NII]λ6583/H α line ratio, suggesting a change in the ionization mechanism and source across the nebula. The velocity map shows no visible general trend or rotation, indicating that filaments are not falling uniformly onto the galaxy, nor being uniformly pulled out from it. Comparison between the physical properties of the filaments and Hitomi measurements of the X-ray gas dynamics in Perseus is also explored.

Original language	English
Pages (from-to)	L28-L33
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	479
Issue number	1
Early online date	15 May 2018
DOIs	https://doi.org/10.1093/mnrasl/sly084
Publication status	Published - 1 Sept 2018

Bibliographical note

5 pages, 6 figures, submitted to MNRAS Letters

Keywords

Galaxies: Individual: NGC 1275
Galaxies: clusters: individual: Perseus cluster

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnrasl/sly084

1802.00031v2
This is a pre-copyedited, author-produced version of an article accepted for publication in Monthly Notices of the Royal Astronomic Society following per review. The version of record Gendron-Marsolais, M, Hlavacek-Larrondo, J, Martin, TB, Drissen, L, McDonald, M, Fabian, AC, Edge, AC, Hamer, SL, McNamara, B & Morrison, G 2018, 'Revealing the velocity structure of the filamentary nebula in NGC 1275 in its entirety' Monthly Notices of the Royal Astronomical Society: Letters, vol. 479, no. 1, pp. L28-L33. is available online at: https://academic.oup.com/mnrasl/article/479/1/L28/4996541
Accepted author manuscript, 994 KB

Cite this

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title = "Revealing the velocity structure of the filamentary nebula in NGC 1275 in its entirety",

abstract = "We have produced for the first time a detailed velocity map of the giant filamentary nebula surrounding NGC 1275, the Perseus cluster's brightest galaxy, and revealed a previously unknown rich velocity structure across the entire nebula. These newobservations were obtained with the optical imaging Fourier transform spectrometer SITELLE at CFHT. With its wide field of view (~11 arcmin×11 arcmin), SITELLE is the only integral field unit spectroscopy instrument able to cover the 80 kpc × 55 kpc ( 3.8 arcmin×2.6 arcmin) large nebula in NGC 1275. Our analysis of these observations shows a smooth radial gradient of the [NII]λ6583/H α line ratio, suggesting a change in the ionization mechanism and source across the nebula. The velocity map shows no visible general trend or rotation, indicating that filaments are not falling uniformly onto the galaxy, nor being uniformly pulled out from it. Comparison between the physical properties of the filaments and Hitomi measurements of the X-ray gas dynamics in Perseus is also explored.",

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AU - Martin, T. B.

AU - Drissen, L.

AU - McDonald, M.

AU - Fabian, A. C.

AU - Edge, A. C.

AU - Hamer, S. L.

AU - McNamara, B.

AU - Morrison, G.

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AB - We have produced for the first time a detailed velocity map of the giant filamentary nebula surrounding NGC 1275, the Perseus cluster's brightest galaxy, and revealed a previously unknown rich velocity structure across the entire nebula. These newobservations were obtained with the optical imaging Fourier transform spectrometer SITELLE at CFHT. With its wide field of view (~11 arcmin×11 arcmin), SITELLE is the only integral field unit spectroscopy instrument able to cover the 80 kpc × 55 kpc ( 3.8 arcmin×2.6 arcmin) large nebula in NGC 1275. Our analysis of these observations shows a smooth radial gradient of the [NII]λ6583/H α line ratio, suggesting a change in the ionization mechanism and source across the nebula. The velocity map shows no visible general trend or rotation, indicating that filaments are not falling uniformly onto the galaxy, nor being uniformly pulled out from it. Comparison between the physical properties of the filaments and Hitomi measurements of the X-ray gas dynamics in Perseus is also explored.

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Revealing the velocity structure of the filamentary nebula in NGC 1275 in its entirety

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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