type: presentations

label: url

en: Mid- and Near-infrared spectral properties of a sample of Swift-BAT X-ray selected AGNs

en: IAU General Assembly

ja: IAU General Assembly

en: We present a comparative study of the mid- (MIR) to near-infrared (NIR) properties of a sample of X-ray selected AGNs from the Swift/Burst Alert Telescope (BAT) 70-month all-sky hard X-ray (14-195 keV) survey. For a sample of 78 AGNs, including both Seyfert 1 and Seyfert 2 sources with black hole masses derived from 2MASS K-band magnitudes and literature, we obtain spectroscopic data from the IRC (2.5 - 5 μm) and IRS (in the 5-14 μm band) instruments onboard the Akari and Spitzer satellites, respectively. We test possible correlations between the 3.3, 6.2, 7.7, 8.6, 11.2 and 12.7 μm polycyclic aromatic hydrocarbon (PAH) emission features, the continuum slope and CO optical depth, as well as CO2, H2O, and amorphous silicates. Using the 3.3, 6.2 and 11.3 μm PAH emission features as a proxy for the star-formation rate (SFR) we report the AGN type and Eddington-ratio dependences of circum-nuclear star formation.


en: 徳島大学におけるデータサイエンス・AI教育活動と地域貢献

ja: 徳島大学におけるデータサイエンス・AI教育活動と地域貢献

en: 数理・データサイエンス・AI教育強化拠点コンソーシアム四国ブロックシンポジウム

ja: 数理・データサイエンス・AI教育強化拠点コンソーシアム四国ブロックシンポジウム

en: 香川大学

ja: 香川大学

en: 香川

ja: 香川


en: 大質量星形成領域の遠赤外線 [CII] 輝線広域観測を進める日印共同気球実験

ja: 大質量星形成領域の遠赤外線 [CII] 輝線広域観測を進める日印共同気球実験

en: 日本天文学会2022年 春季年会

ja: 日本天文学会2022年 春季年会


en: 日印共同気球実験による遠赤外線[CII]輝線の広域マッピング観測で迫る大質量星形成の理解

en: 大気球シンポジウム2021年度

ja: 大気球シンポジウム2021年度


en: 大質量形成領域の気球赤外線観測の現状と将来

ja: 大質量形成領域の気球赤外線観測の現状と将来

en: 国立天文台研究集会 (サブ)ミリ波単一鏡の革新で挑む, 天文学の未解決問題

ja: 国立天文台研究集会 (サブ)ミリ波単一鏡の革新で挑む, 天文学の未解決問題


en: SPICA 搭載中間赤外線観測装置 SMI: Phase-A 技術開発・検討結果報告

en: 日本天文学会2021年春季年会

ja: 日本天文学会2021年春季年会


en: 徳島大学データサイエンス教育に関する取り組み

ja: 徳島大学データサイエンス教育に関する取り組み

en: 第2回愛媛大学データサイエンス教育セミナー

ja: 第2回愛媛大学データサイエンス教育セミナー


en: 埋もれた AGN に対する中間赤外線シリケートダストの系統的観測研究

ja: 埋もれた AGN に対する中間赤外線シリケートダストの系統的観測研究

en: 日本天文学会 2020年 秋季年会

ja: 日本天文学会 2020年 秋季年会


en: SPICA 搭載中間赤外線観測装置:ESA 審査に基づく概念検討・設計の進捗

ja: SPICA 搭載中間赤外線観測装置:ESA 審査に基づく概念検討・設計の進捗

en: 日本天文学会 2020年秋季年会

ja: 日本天文学会 2020年秋季年会


en: SPICA/SMI搭載中間赤外線Immersion grating:材料選定のための極低温での CdZnTe の透過率測定

en: 日本天文学会 2020年春季年会

ja: 日本天文学会 2020年春季年会


en: SPICA 搭載中間赤外線観測装置 SMI のフェーズ A の技術開発の進捗

ja: SPICA 搭載中間赤外線観測装置 SMI のフェーズ A の技術開発の進捗

en: 日本天文学会

ja: 日本天文学会


en: Spitzer/IRS による埋もれた AGN のシリケートダストの系統的研究

ja: Spitzer/IRS による埋もれた AGN のシリケートダストの系統的研究

en: 筑波

ja: 筑波


en: 大質量星形成領域の遠赤外線 [CII] 輝線広域観測を進める日印共同気球実験

ja: 大質量星形成領域の遠赤外線 [CII] 輝線広域観測を進める日印共同気球実験

en: 日本天文学会2022年春季年会

ja: 日本天文学会2022年春季年会


en: 広領域 SMI-CAM サーベイで探る初期宇宙の塵に覆われた AGN

ja: 広領域 SMI-CAM サーベイで探る初期宇宙の塵に覆われた AGN


en: Cosmic Optical Background

ja: Cosmic Optical Background

en: NOAO Proposal

ja: NOAO Proposal

en: The Cosmic Optical Background (COB) constitutes vital information on formation of galaxies, AGNs, and large-scale structure, since it records the total emission from stars in galaxies and any light-emitting materials in intergalactic space, if any, over all time after z ~ 6. Here, we propose to do B- and R-band imaging over an area of 50 square degrees covering the CO cloud and the minimum HI column density points in the Lockman Hole. These optical data will be combined with the diffuse far-infrared maps of the Akari satellite. Utilizing the shielding effect of dark clouds on optical light and the correlation between the optical scattered light and the far-infrared emission, we will observe the COB. The proposed observation is useful for other studies: (1) distribution of interstellar dust; (2) optical properties of dust grain in the optical and far-infrared such as extinction coefficients and size distribution of dust; (3) reducing the confusion noise by IR cirrus when searching for faint far-infrared galaxies.


en: New survey for Active Galactic Nuclei using AKARI mid-infrared all sky survey

en: We propose new survey for Active Galactic Nuclei using AKARI mid- infrared (MIR) all sky survey. The AGN selection in the mid-infrared can minimize wavelength-dependent selection effects. Using this sample, we can make the unbiased statistical studies that answer how much the space density of Seyfert 1 and Seyfert 2 is, what kind of galaxies the hosts of AGNs are and so on. The AKARI MIR all sky survey was carried out with two wide bands of the Infrared Camera (IRC) centered at 9 and 18 micron with the sensitivity of about 50 and 120 mJy (5-sigma per scan), respectively. The AKARI mid-infrared all-sky survey substantially improves the MIR data set of the IRAS survey of two decades ago. Our targets are selected with a criterion of F(9 micron)/F(K_S) >2 that culls AGN candidates from MIR all sky survey. In this semester, our 40 targets have been selected in the North Galactic Cap. We request four nights with KPNO 2.1m/Goldman Spectrograph for spectroscopic in order to measure their redshift and to confirm their activities.


en: NIR Imaging of the AKARI North Ecliptic Pole Wide Survey Field

en: We propose to perform J- and H-band wide-field imaging of the north ecliptic pole (NEP) area which has been surveyed by the AKARI Infrared Space Telescope. The NEP-Wide survey, one of the AKARI's key scientific programs, images a 5.8 deg^2 circular area centered on the north ecliptic pole with contiguous 9 passbands between 2.5 and 24 (micron) to the flux limit ranging from 15 (mu)Jy to 500 (mu)Jy (plus FIR data), including 11, 15, and 18 (micron) bands where the Spitzer has limitations. Thus, NEP-Wide is the only wide-area IR survey that allows us to study the evolution of various mid-IR features from z=0 to z=2 such as PAHs, silicate absorptions, and power-slopes of AGNs, and their connection to IR-luminosity, star formation and AGN activities of IR sources not bright enough for the Spitzer spectroscopy. Optical imaging as well as radio/X-ray data exist over this field, however there is a gaping hole at NIR between the AKARI and the optical coverage. In order to fill the wavelength gap, we propose to obtain J-, and H-band images to 15 (mu)Jy at 5-ς using FLAMINGOS on the 2.1-m. Filling the hole in the spectral energy distribution will significantly increase the value of the NEP-Wide dataset by permitting us to add more accurate stellar mass and photo-z estimates, and also a large number of SEDs from optical to IR without a gap in wavelength coverage.


en: GRB040709 J,H-band observations.

ja: GRB040709 J,H-band observations.

en: GRB Coordinates Network

ja: GRB Coordinates Network


en: Spectroscopic investigation of the ISO far-IR (175(micron) & 95(mu)m) sources

en: We propose to carry out spectroscopic observations of a large sample of far-infrared (FIR) sources identified in the deep Infrared Space Observatory far-infrared survey of the Lockman Hole region using HYDRR on the WIYN telescope. A comparison of the ISOPHOT sources with radio and X-ray data suggests that most of the FIR sources are star-forming galaxies rather than AGNs. The number density of ISOPHOT sources exceeds the predictions of the star formation evolution models based on optical data. Substantial dust obscuration of star forming activity may be occurring even at modest redshifts, where most of these ISOPHOT sources are expected to be located. Our proposed multi-object spectroscopy with HYDRR will help determine the redshifts and luminosity for the bulk of the ISOPHOT sources. Our proposed WIYN observations will enable us for the first time to constrain the contribution of far-infrared galaxies to the star formation history of the Universe over the important redshift range z=0-1.5 where the SFR appears to increase by as much as a factor of 20-100 compared to the current epoch, and where as much as 50-80% of the luminosity is hidden by dust.


en: Optical morphology of ISO far-infrared sources in the Lockman Hole seen through 0.5" resolution imaging

en: Subaru Proposal

ja: Subaru Proposal