@inproceedings{oai:jaxa.repo.nii.ac.jp:00003127, author = {植田, 稔也 and Tomasino, Rachael L. and 瀧田, 怜 and 泉浦, 秀行 and 白旗, 麻衣 and Fullard, Andrew and 山村, 一誠 and 松浦, 周二 and Ueta, Toshiya and Tomasino, Rachael L. and Takita, Satoshi and Izumiura, Hideyuki and Shirahata, Mai and Fullard, Andrew and Yamamura, Issei and Matsuura, Shuji}, book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life}, month = {Mar}, note = {第4回「あかり」国際会議 (2017年10月17-20日. 東京大学), 文京区, 東京, The 4th AKARI International Conference: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life (October 17-20, 2017. The University of Tokyo), Bunkyo-ku, Tokyo, Japan, We introduce a general-purpose surface brightness correction method for compact extended sources imaged in the slow-scan pointed-observation mode of the Far-Infrared Surveyor (FIS) aboard the AKARI infrared astronomical satellite. Our method recovers correct surface brightness maps by rescaling archived raw FIS maps using the surface-brightness-dependent inverse FIS response function. The flux of a target source is then automatically corrected for as the simple sum of surface brightnesses within the adopted target perimeter (i.e., standard contour photometry). This correction method is contrasted with the previous aperture photometry method for point sources, which directly corrects for the target flux with a flux-dependent scaling law. The new surface brightness correction method is applicable to objects of any shape from unresolved point sources to resolved extended objects, as long as the target is not deemed diffuse, i.e., the total extent of the target source does not exceed much more than a single FIS scan width of about 10 min. The new correction method takes advantage of the well-defined shape (i.e., the scale-invariance) of the point spread function, which enables us to adopt a power-law FIS response function. We analyze the point source photometric calibrator data using the FIS AKARI Slow-Scan Tool and constrain the parameters of the adopted power-law FIS response function. We conclude that the photometric accuracy of the new correction method is better than 10% error based on comparisons with the expected fluxes of the photometric calibrators, and that resulting fluxes without the present correction method can lead to differences more than a factor of two., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1730026053, レポート番号: JAXA-SP-17-009E}, pages = {285--288}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {Surface brightness correction for compact extended sources observed by the AKARI Far-Infrared Surveyor in the slow-scan mode}, volume = {JAXA-SP-17-009E}, year = {2018} }