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Quasar Feedback Survey 2: Set of figures of radio maps

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Figshare2025-10-28 更新2026-04-28 收录
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https://figshare.com/articles/dataset/Quasar_Feedback_Survey_2_Set_of_figures_of_radio_maps/29968042
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This data release is associated with the publication "The Quasar Feedback Survey: Revealing the importance of sensitive radio imaging deeper into the radio quiet regime", published in Njeri et al. (2026), MNRAS, under review.This work presents 1.4GHz and 6 GHz radio imaging, obtained from the Very Large Array for the 29 quasars from the extended sample, to lower luminosities (QFeedS-2), of the Quasar Feedback Survey (first presented in Jarvis et al. 2021, MNRAS, 503, 1780 https://doi.org/10.1093/mnras/stab549 ). These targets are z~0.1 quasar host galaxies, selected to be luminous in [O III] emission (L[O III] > 1042.1 erg/s). For full details of the survey description and sample selection see Njeri et al. (2026).This data release contains a set of figures for each of the 29 sources. These are equivalent to the examples shown in the primary paper (Njeri et al. 2025) for three example galaxies. The rgb images come from the DESI Legacy Imaging Survey in the 𝑧, 𝑟 , 𝑔 bands. The contours overlaid represent: FIRST maps with levels 1𝜎 × [2, 3, 4, 5]; our new VLA 1.4 GHz maps with levels 1𝜎 × [2, 4, 6, 8] and our new VLA 6 GHz maps with levels 1𝜎 × [2, 4, 6, 8]. Ellipses represent the synthesised beam for the corresponding radio map contours; ∼5 arcsec for FIRST (in red), ∼1 arcsec for VLA 1.4 GHz (in green) and ∼0.3 arcsec for VLA 6 GHz (in blue). The scale bar highlights the physical size scales.Our VLA images produced from the Very Large Array (VLA) data, using the A-array configuration. The raw VLA data were obtained under proposal ID 23A-214. We used the VLA Calibration Pipeline 2024.1.0.8 for casa version 6.6.1 to reduce our data. Imaging was performed using the casa tclean algorithm with Briggs weighting of r=0.5 for all radio maps.
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2025-10-28
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