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• W3130396935 endingPage "2597" @default.
• W3130396935 startingPage "2583" @default.
• W3130396935 abstract "We have conducted a systematic survey for z $<$ 0.04 active Galactic nuclei (AGNs) that may have changed spectral class over the past decade. We use SkyMapper, Pan-STARRS and the V'eron-Cetty & V'eron (2010) catalogue to search the entire sky for these ``changing-look'' AGNs using a variety of selection methods, where Pan-STARRS has a coverage of 3$pi$ steradians (sky north of Declination $-30^circ$) and SkyMapper has coverage of $sim$ 21,000$~rm{deg^2}$ (sky south of Declination $0^circ$). We use small aperture photometry to measure how colour and flux have changed over time, where a change may indicate a change in spectral type. Optical colour and flux are used as a proxy for changing H$alpha$ equivalent width, while WISE 3.4 $mu$m flux is used to look for changes in the hot dust component. We have identified four AGNs with varying spectra selected using our optical colour selection method. Three AGNs were confirmed from recent observations with WiFeS on the 2.3 m telescope at Siding Spring and the other was identified from archival spectra alone. From this, we identify two new changing look AGNs; NGC 1346 and 2MASX J20075129-1108346. We also recover Mrk 915 and Mrk 609, which are known to have varying spectra in the literature, but they do not meet our specific criteria for changing look AGNs." @default.
• W3130396935 created "2021-03-01" @default.
• W3130396935 creator A5015837326 @default.
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• W3130396935 creator A5070719193 @default.
• W3130396935 creator A5081882010 @default.
• W3130396935 creator A5082575274 @default.
• W3130396935 date "2021-02-13" @default.
• W3130396935 modified "2023-10-15" @default.
• W3130396935 title "A systematic survey for <i>z</i>&lt; 0.04 CLAGNs" @default.
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