Fast simultaneous infrared and optical photometry of NGC4151

A. Lawrence; A. B. Giles; I. M. McHardy; B. A. Cooke

doi:10.1093/mnras/195.2.149

Fast simultaneous infrared and optical photometry of NGC4151

A. Lawrence, A. B. Giles, I. M. McHardy, B. A. Cooke

School of Physics and Astronomy

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

Abstract

The Seyfert galaxy NGC4151 was observed continuously in bands V and K for several hours each night during the week 1979 May 14-21. In our 22 arcsec aperture its magnitude remained constant to better than 0.05 mag at V = 12.01 and K = 8.67 on all time-scales from minutes to one week. The implications of differing characteristic time-scales of variability in different wavebands for the structure of the nucleus are discussed.

Original language	English
Pages (from-to)	149-154
Journal	Monthly Notices of the Royal Astronomical Society
Volume	195
DOIs	https://doi.org/10.1093/mnras/195.2.149
Publication status	Published - 1 Apr 1981

Keywords / Materials (for Non-textual outputs)

Galactic Nuclei
Galactic Structure
Infrared Astronomy
Seyfert Galaxies
Visual Photometry
Calibrating
Variability
X Ray Astronomy

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10.1093/mnras/195.2.149

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title = "Fast simultaneous infrared and optical photometry of NGC4151",

abstract = "The Seyfert galaxy NGC4151 was observed continuously in bands V and K for several hours each night during the week 1979 May 14-21. In our 22 arcsec aperture its magnitude remained constant to better than 0.05 mag at V = 12.01 and K = 8.67 on all time-scales from minutes to one week. The implications of differing characteristic time-scales of variability in different wavebands for the structure of the nucleus are discussed.",

keywords = "Galactic Nuclei, Galactic Structure, Infrared Astronomy, Seyfert Galaxies, Visual Photometry, Calibrating, Variability, X Ray Astronomy",

author = "A. Lawrence and Giles, {A. B.} and McHardy, {I. M.} and Cooke, {B. A.}",

year = "1981",

month = apr,

day = "1",

doi = "10.1093/mnras/195.2.149",

language = "English",

volume = "195",

pages = "149--154",

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

issn = "0035-8711",

publisher = "Oxford University Press",

}

TY - JOUR

T1 - Fast simultaneous infrared and optical photometry of NGC4151

AU - Lawrence, A.

AU - Giles, A. B.

AU - McHardy, I. M.

AU - Cooke, B. A.

PY - 1981/4/1

Y1 - 1981/4/1

N2 - The Seyfert galaxy NGC4151 was observed continuously in bands V and K for several hours each night during the week 1979 May 14-21. In our 22 arcsec aperture its magnitude remained constant to better than 0.05 mag at V = 12.01 and K = 8.67 on all time-scales from minutes to one week. The implications of differing characteristic time-scales of variability in different wavebands for the structure of the nucleus are discussed.

AB - The Seyfert galaxy NGC4151 was observed continuously in bands V and K for several hours each night during the week 1979 May 14-21. In our 22 arcsec aperture its magnitude remained constant to better than 0.05 mag at V = 12.01 and K = 8.67 on all time-scales from minutes to one week. The implications of differing characteristic time-scales of variability in different wavebands for the structure of the nucleus are discussed.

KW - Galactic Nuclei

KW - Galactic Structure

KW - Infrared Astronomy

KW - Seyfert Galaxies

KW - Visual Photometry

KW - Calibrating

KW - Variability

KW - X Ray Astronomy

U2 - 10.1093/mnras/195.2.149

DO - 10.1093/mnras/195.2.149

M3 - Article

SN - 0035-8711

VL - 195

SP - 149

EP - 154

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

Fast simultaneous infrared and optical photometry of NGC4151

Abstract

Keywords / Materials (for Non-textual outputs)

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