Monitoring of the optical and 2.5-11.7 mu m spectrum and mid-IR imaging of the Seyfert 1 galaxy Mrk 279 with ISO
Maria Santos-Lleo,J. Clavel,Benjamin L. Schulz,Bruno Altieri,P. Barr,Danielle Alloin,Perry Berlind,R. Bertram,R. Bertram,D. M. Crenshaw,Rick Edelson,Uriel Giveon,Keith Horne,John P. Huchra,Shai Kaspi,Gerard A. Kriss,Julian H. Krolik,M. A. Malkan,Yu. F. Malkov,Hagai Netzer,P. T. O'Brien,Bradley M. Peterson,Richard W. Pogge,V. I. Pronik,B.-C. Qian,Gail A. Reichert,P. M. Rodriguez-Pascual,S. G. Sergeev,J. Tao,Susan Tokarz,R. M. Wagner,R. M. Wagner,Willem Wamsteker,Belinda Jane Wilkes +33 more
- Vol. 369, Iss: 1, pp 57-64
TLDR
In this article, mid-infrared images of the Seyfert 1 galaxy Mrk 279 obtained with the ISO satellite are presented together with the results of a one-year monitoring campaign of the 2.5-11.7 mum spectrum.Abstract:
Mid-infrared images of the Seyfert 1 galaxy Mrk 279 obtained with the ISO satellite are presented together with the results of a one-year monitoring campaign of the 2.5-11.7 mum spectrum. Contemporaneous optical photometric and spectrophotometric observations are also presented. The galaxy appears as a point-like source at the resolution of the ISOCAM instrument (4-5 "). The 2.5-11.7 mum average spectrum of the nucleus in Mrk 279 shows a strong power law continuum with alpha = -0.80 +/- 0.05 (F nu proportional to nu (alpha)) and weak PAK emission features. The Mrk 279 spectral energy distribution shows a mid-IR bump, which extends from 2 to 15-20 mum The mid-IR bump is consistent with thermal emission from dust grains at a distance of greater than or similar to 100 It-d. No significant variations of the mid-IR flux have been detected during our observing campaign, consistent with the relatively low amplitude (similar to 10% rms) of the optical variability during the campaign. The time delay for H beta line emission in response to the optical continuum variations is tau = 16.7(-5.6)(+5.3), days, consistent with previous measurements.read more
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Szymon Kozłowski,Christopher S. Kochanek,Andrzej Udalski,Łukasz Wyrzykowski,Łukasz Wyrzykowski,Igor Soszyński,Michał K. Szymański,M. Kubiak,Grzegorz Pietrzyński,Grzegorz Pietrzyński,O. Szewczyk,O. Szewczyk,Krzysztof Ulaczyk,Radosław Poleski +13 more
TL;DR: In this paper, a fast method for modeling and classifying non-periodic continuously varying sources (quasars, aperiodic stellar variability) is presented, where the location of common variability classes in the parameter space of the model is discussed.
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Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. IV. H$\beta$ Time Lags and Implications for Super-Eddington Accretion
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TL;DR: In this paper, the authors report on the results of the second phase of the campaign, during 2013-2014, and the measurements of five new H beta time lags out of eight monitored AGNs.
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Continuum and emission-line strength relations for a large active galactic nuclei sample
Matthias Dietrich,Fred Hamann,J. C. Shields,Anca Constantin,Marianne Vestergaard,Frederic H. Chaffee,Craig B. Foltz,Vesa T. Junkkarinen +7 more
TL;DR: In this article, a large sample of 744 type 1 active galactic nuclei, including quasars and Seyfert 1 galaxies across the redshift from 0 z 5 and spanning nearly 6 orders of magnitude in continuum luminosity.
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