Quasar Feedback Survey 2: C-band maps.

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. (2025), 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. (2025).This data release contains the C-band (~6GHz) images produced from the Very Large Array (VLA), in A-array configuration, for each of the 29 sources. The raw VLA data were obtained under proposal ID 23A-214.All normal metadata, associated with astronomical images (observation details, source details, process of imaging), is included with the fits files.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.

本数据集关联Njeri等人（2025）发表于《皇家天文学会月刊》(MNRAS)且目前处于审稿阶段的研究论文《类星体反馈巡天：揭示高灵敏度射电成像向射电宁静区纵深拓展的重要性》。

本工作发布了类星体反馈巡天（Quasar Feedback Survey，首次见于Jarvis等人2021年发表于MNRAS, 503, 1780的研究，DOI: 10.1093/mnras/stab549）扩展样本中的29颗类星体的1.4GHz与6GHz射电成像数据，由甚大天线阵（Very Large Array, VLA）获取，将探测光度下限拓展至更低区间（QFeedS-2）。这些目标为红移z~0.1的类星体宿主星系，筛选标准为[O III]发射线光度$L_{[O III]} > 10^{42.1}$ erg/s。关于巡天描述与样本选择的完整细节，请参阅Njeri等人（2025）的研究。

本数据集包含29个源各自的C波段（~6GHz）射电成像数据，观测采用A阵列构型，由甚大天线阵获取。原始VLA数据的观测项目编号为23A-214。

所有与天文图像相关的标准元数据（包括观测详情、源天体信息、成像流程）均已包含在fits文件中。

我们采用适配CASA 6.6.1版本的VLA校准管线2024.1.0.8完成数据校准，并使用CASA的tclean算法进行成像，所有射电图像均采用Briggs加权（r=0.5）处理。