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The Herschel-PACS North Ecliptic Pole Survey
Goto, Tomotsugu; Kim, Seong Jin; Pearson, Chris +9 more
A detailed analysis of Herschel/Photoconductor Array Camera and Spectrometer (PACS) observations at the North Ecliptic Pole is presented. High-quality maps, covering an area of 0.44 deg2, are produced and then used to derive potential candidate source lists. A rigorous quality-control pipeline has been used to create final legacy catalo…
A systematic study of Galactic infrared bubbles along the Galactic plane with AKARI and Herschel
Oyabu, Shinki; Kaneda, Hidehiro; Ishihara, Daisuke +7 more
Galactic infrared (IR) bubbles, which have shell-like structures in the mid-IR wavelengths, are known to contain massive stars near their centers. Infrared bubbles in inner Galactic regions (|l| ≤ 65°, |b| ≤ 1°) have so far been studied well to understand the massive star formation mechanisms. In this study, we expand the research area to the whol…
Near-infrared imaging polarimetry toward M 17 SWex
Kusune, Takayoshi; Nakamura, Fumitaka; Tamura, Motohide +7 more
We conducted near-infrared (JHK_s) imaging polarimetry toward the infrared dark cloud (IRDC) M 17 SWex, including almost all of the IRDC filaments as well as its outskirts, with the polarimeter SIRPOL on the IRSF 1.4 m telescope. We revealed the magnetic fields of M 17 SWex with our polarization-detected sources that were selected by some criteria…
Characteristics of mid-infrared PAH emission from star-forming galaxies selected at 250 µm in the North Ecliptic Pole field
Hashimoto, Tetsuya; Goto, Tomotsugu; Kim, Seong Jin +11 more
Evolutionary properties of infrared (IR) luminous galaxies are important keys to understand dust-obscured star formation history and galaxy evolution. Based on near- to mid-IR imaging with nine continuous filters of the AKARI space telescope, we present the characteristics of dusty star-forming (SF) galaxies showing polycyclic aromatic hydrocarbon…
AKARI NEP field: Point source catalogs from GALEX and Herschel observations and selection of candidate lensed sub-millimeter galaxies
Goto, Tomotsugu; Burgarella, Denis; Pearson, Chris +9 more
The AKARI Wide North Ecliptic field is one of the most important cosmological fields because it lies in the continuous viewing zones for many space telescopes, e.g., Herschel, HST, and JWST, and it is also a natural high-visibility field from the L2 halo orbit. The field will be also the location of the deep survey for the Euclid mission. Finally,…
AKARI and IRAS: From beam corrections to SEDs
Pearson, Chris; Clements, David L.; Wang, Lingyu +6 more
There is significant scientific value to be gained from combining AKARI fluxes with data at other far-infrared (IR) wavelengths from the Infrared Astronomical Satellite (IRAS) and Herschel missions. To be able to do this we must ensure that there are no systematic differences between the data sets that need to be corrected before the fluxes are co…
Far-infrared dust properties of highly dust-obscured active galactic nuclei from the AKARI and WISE all-sky surveys
Malkan, Matthew; Lam, Anson; Wright, Edward
The combination of the AKARI and WISE infrared all-sky surveys provides a unique opportunity to identify and characterize the most highly dust-obscured active galactic nuclei (AGNs) in the universe. Dust-obscured AGNs are not easily detectable and are potentially underrepresented in extragalactic surveys due to their high optical extinction, but a…