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The Infrared Astronomical Mission AKARI*
Goto, Tomotsugu; Nakagawa, Takao; Shirahata, Mai +90 more
AKARI, the first Japanese satellite dedicated to infrared astronomy, was launched on 2006 February 21, and started observations in May of the same year. AKARI has a 68.5 cm cooled telescope, together with two focal-plane instruments, which survey the sky in six wavelength bands from the mid- to far-infrared. The instruments also have the capabilit…
The Infrared Camera (IRC) for AKARI -- Design and Imaging Performance
Pearson, C. P.; Ohyama, Y.; Takagi, T. +25 more
The Infrared Camera (IRC) is one of two focal-plane instruments on the AKARI satellite. It is designed for wide-field deep imaging and low-resolution spectroscopy in the near- to mid-infrared (1.8-26.5'
The Far-Infrared Surveyor (FIS) for AKARI
Lee, H. M.; White, G. J.; Wang, L. +57 more
The Far-Infrared Surveyor (FIS) is one of two focal-plane instruments on the AKARI satellite. FIS has four photometric bands at 65, 90, 140, and 160 µm, and uses two kinds of array detectors. The FIS arrays and optics are designed to sweep the sky with high spatial resolution and redundancy. The actual scan width is more than eight arcminutes, and…
An evolutionary catalogue of galactic post-AGB and related objects
Szczerba, R.; Siódmiak, N.; Stasińska, G. +1 more
Aims:With the ongoing AKARI infrared sky survey, of much greater sensitivity than IRAS, a wealth of post-AGB objects may be discovered. It is thus time to organize our present knowledge of known post-AGB stars in the galaxy with a view to using it to search for new post-AGB objects among AKARI sources.
Methods: We searched the literature avail…
Near-Infrared and Mid-Infrared Spectroscopy with the Infrared Camera (IRC) for AKARI
Pearson, C. P.; Ohyama, Y.; Takagi, T. +22 more
The Infrared Camera (IRC) is one of the two instruments on board the AKARI satellite. In addition to deep imaging from 1.8 to 26.5 ×
Flight Performance of the AKARI Cryogenic System
Nakagawa, Takao; Murakami, Masahide; Yoshida, Seiji +11 more
We describe the flight performance of the cryogenic system of the infrared astronomical satellite AKARI, which was successfully launched on 2006 February 21 (UT). AKARI carries a 68.5 cm telescope together with two focal plane instruments, Infrared Cameras (IRC) and Far Infrared Surveyor (FIS), all of which are cooled down to cryogenic temperature…
Properties of UIR Bands in NGC6946 Based on Mid-Infrared Imaging and Spectroscopy with Infrared Camera on Board AKARI
Serjeant, S.; Ohyama, Y.; Takagi, T. +23 more
We present results on mid-infrared imaging and spectroscopic observations of the nearby late-type spiral NGC6946 with the Infrared Camera on board AKARI. Based on mid-infrared imaging with the S7 (7µm may be tools to measure the star-formation activity in remote galaxies if these ratios and their variations are well examined and established …
In-Orbit Focal Adjustment of the AKARI Telescope with Infrared Camera (IRC) Images
Takagi, T.; Wada, T.; Onaka, T. +4 more
AKARI, currently in space, carries onboard a cryogenically cooled light-weight telescope with silicon carbide mirrors. The wavefront error of the AKARI telescope, obtained in laboratory measurements at 9 K, showed that the expected in-orbit imaging performance was diffraction-limited at a wavelength of 6.2 µm, slightly degraded from that exp…
Multi-Wavelength Analysis of 18 µm-Selected Galaxies in the AKARI/Infrared-Camera monitor fieldtowards the North Ecliptic Pole
Im, M.; Lee, H. M.; Serjeant, S. +25 more
We present an initial analysis of AKARI 18z Ultra-Luminous InfraRed Galaxies, and a large variation of the PAH inter-band strength ratio in galaxies at high redshifts.
Nature of Infrared Sources in 11 µm Selected Sample from Early Data of the AKARI North Ecliptic Pole Deep Survey
Im, M.; Lee, H. M.; Pearson, C. P. +25 more
We present the properties of 11 10^{12} L_{⊙} based on detailed modelling of the SEDs. We also find four AGNs lying at various redshifts in the main sample. In addition, we discuss a few sources that have non-typical SEDs of the main sample, including a brown-dwarf candidate, a steep power-law source, a flat-spectrum object, and an early-type gala…