- ID:
- ivo://CDS.VizieR/II/298
- Title:
- AKARI/FIS All-Sky Survey Point Source Catalogues
- Short Name:
- II/298
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The AKARI Infrared Astronomical Satellite observed the whole sky in the far infrared (50-180{mu}m) and the mid-infrared (9 and 18{mu}m) between May 2006 and August 2007 (Murakami et al. 2007PASJ...59S.369M) The AKARI/FIS All-Sky Survey Bright Source Catalog Version 1.0 provides positions and fluxes for 427071 point sources in the 4 far-infrared wavelengths centered at 65, 90, 140 and 160{mu}m (see filter characteristics in the "Note (1)" section below)
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- ID:
- ivo://CDS.VizieR/II/297
- Title:
- AKARI/IRC mid-IR all-sky Survey
- Short Name:
- II/297
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The AKARI Infrared Astronomical Satellite observed the whole sky in the far infrared (50-180{mu}m) and the mid-infrared (9 and 18{mu}m) between May 2006 and August 2007 (Murakami et al. 2007PASJ...59S.369M) The AKARI/IRC Point Source Catalogue Version 1.0 provides positions and fluxes for 870,973 sources observed with the InfraRed Camera (IRC): 844,649 sources in the S9W filter, and 194,551 sources in the L18W filter; the "Note (1)" section below provides a summary of the IRC filter characteristics.
- ID:
- ivo://CDS.VizieR/J/AJ/145/32
- Title:
- AKARI-LMC Near-infrared Spectroscopic Catalog
- Short Name:
- J/AJ/145/32
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We performed a near-infrared spectroscopic survey toward an area of ~10deg^2^ of the Large Magellanic Cloud (LMC) with the infrared satellite AKARI. Observations were carried out as part of the AKARI Large-area Survey of the Large Magellanic Cloud (LSLMC). The slitless multi-object spectroscopic capability of the AKARI/IRC enabled us to obtain low-resolution (R~20) spectra in 2-5{mu}m for a large number of point sources in the LMC. As a result of the survey, we extracted about 2000 infrared spectra of point sources. The data are organized as a near-infrared spectroscopic catalog. The catalog includes various infrared objects such as young stellar objects (YSOs), asymptotic giant branch (AGB) stars, supergiants, and so on. It is shown that 97% of the catalog sources have corresponding photometric data in the wavelength range from 1.2 to 11{mu}m, and 67% of the sources also have photometric data up to 24{mu}m. The catalog allows us to investigate near-infrared spectral features of sources by comparison with their infrared spectral energy distributions. In addition, it is estimated that about 10% of the catalog sources are observed at more than two different epochs. This enables us to study a spectroscopic variability of sources by using the present catalog. Initial results of source classifications for the LSLMC samples are presented. We classified 659 LSLMC spectra based on their near-infrared spectral features by visual inspection. As a result, it is shown that the present catalog includes 7 YSOs, 160 C-rich AGBs, 8 C-rich AGB candidates, 85 O-rich AGBs, 122 blue and yellow supergiants, 150 red super giants, and 128 unclassified sources. Distributions of the classified sources on the color-color and color-magnitude diagrams are discussed in the text. Continuous wavelength coverage and high spectroscopic sensitivity in 2-5{mu}m can only be achieved by space observations. This is an unprecedented large-scale spectroscopic survey toward the LMC in the near-infrared. A large number of near-infrared spectral data provided by the survey possess scientific potential that can be applied to various studies. In this paper, we present the details of the spectroscopic survey and the catalog, and discuss its scientific applications.
- ID:
- ivo://CDS.VizieR/J/AJ/144/179
- Title:
- AKARI-LMC Point-source catalog
- Short Name:
- J/AJ/144/179
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a near- to mid-infrared point-source catalog of five photometric bands at 3.2, 7, 11, 15, and 24{mu}m for a 10deg^2^ area of the Large Magellanic Cloud (LMC) obtained with the Infrared Camera on board the AKARI satellite. To cover the survey area the observations were carried out at three separate seasons from 2006 May to June, 2006 October to December, and 2007 March to July. The 10{sigma} limiting magnitudes of the present survey are 17.9, 13.8, 12.4, 9.9, and 8.6mag at 3.2, 7, 11, 15, and 24{mu}m, respectively. The photometric accuracy is estimated to be about 0.1mag at 3.2{mu}m and 0.06-0.07 mag in the other bands. The position accuracy is 0.3" at 3.2, 7, and 11{mu}m and 1.0" at 15 and 24{mu}m. The sensitivities at 3.2, 7, and 24{mu}m are roughly comparable to those of the Spitzer SAGE LMC point-source catalog, while the AKARI catalog provides the data at 11 and 15 {mu}m, covering the mid-infrared spectral range contiguously. Two types of catalog are provided: a Catalog and an Archive. The Archive contains all the detected sources, while the Catalog only includes the sources that have a counterpart in the Spitzer SAGE point-source catalog. The Archive contains about 650,000, 140,000, 97,000, 43,000, and 52,000 sources at 3.2, 7, 11, 15, and 24{mu}m, respectively. Based on the catalog, we discuss the luminosity functions at each band, the color-color diagram, and the color-magnitude diagram using the 3.2, 7, and 11{mu}m band data. Stars without circumstellar envelopes, dusty C-rich and O-rich stars, young stellar objects, and background galaxies are located at distinct regions in the diagrams, suggesting that the present catalog is useful for the classification of objects toward the LMC.
- ID:
- ivo://CDS.VizieR/J/PASJ/71/1
- Title:
- AKARI Near Infrared Asteroid Spectral Catalog V1
- Short Name:
- J/PASJ/71/1
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Knowledge of water in the solar system is important for the understanding of a wide range of evolutionary processes and the thermal history of the solar system. To explore the existence of water in the solar system, it is indispensable to investigate hydrated minerals and/or water ice on asteroids. These water-related materials show absorption features in the 3um band (wavelengths from 2.7 to 3.1um). We conducted a spectroscopic survey of asteroids in the 3um band using the Infrared Camera (IRC) on board the Japanese infrared satellite AKARI. In the warm mission period of AKARI, 147 pointed observations were performed for 66 asteroids in the grism mode for wavelengths from 2.5 to 5um. According to these observations, most C-complex asteroids have clear absorption features (>10% with respect to the continuum) related to hydrated minerals at a peak wavelength of approximately 2.75um, while S-complex asteroids have no significant features in this wavelength range. The present data are released to the public as the Asteroid Catalog using AKARI Spectroscopic Observations (AcuA-spec).
- ID:
- ivo://CDS.VizieR/J/A+A/537/A24
- Title:
- AKARI NEP-Deep field mid-IR source catalogue
- Short Name:
- J/A+A/537/A24
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a new catalogue of mid-IR sources using the AKARI NEP-Deep survey. The InfraRed Camera (IRC) onboard AKARI has a comprehensive mid-IR wavelength coverage with 9 photometric bands at 2-24 micron. We designed the catalogue to include most of sources detected in 7, 9, 11, 15, and 18 micron bands, and found 7284 sources in a 0.67 square degree area.
- ID:
- ivo://CDS.VizieR/J/A+A/559/A132
- Title:
- AKARI NEP Deep Survey revised catalog
- Short Name:
- J/A+A/559/A132
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This is the revised catalogue of the AKARI North Ecliptic Pole Deep survey. The survey was carried out with the InfraRed Camera (IRC) onboard AKARI which has a comprehensive mid-IR wavelength coverage in nine photometric bands at 2-24 micron. For mid-IR source extraction we used a detection image while for near-IR source detection we used optical to near-IR ground-based catalogue which is based on CFHT/MegaCam z', CFHT/WIRCam Ks and Subaru/Scam z' band detection. Here we present an AKARI source with the identification from the ground-based catalogue. For objects with multiple counterparts, all of these were listed in the catalogue with an upper limit for the AKARI flux. The magnitudes are given in the AB system.
- ID:
- ivo://CDS.VizieR/J/MNRAS/444/846
- Title:
- AKARI NEP Survey sources at 18um
- Short Name:
- J/MNRAS/444/846
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the first galaxy counts at 18{mu}m using the Japanese AKARI satellite's survey at the North Ecliptic Pole (NEP), produced from the images from the NEP-Deep and NEP-Wide surveys covering 0.6 and 5.8deg^2^, respectively. We describe a procedure using a point source filtering algorithm to remove background structure and a minimum variance method for our source extraction and photometry that delivers the optimum signal to noise for our extracted sources, confirming this by comparison with standard photometry methods. The final source counts are complete and reliable over three orders of magnitude in flux density, resulting in sensitivities (80 per cent completeness) of 0.15 and 0.3mJy for the NEP-Deep and NEP-Wide surveys, respectively, a factor of 1.3 deeper than previous catalogues constructed from this field. The differential source counts exhibit a characteristic upturn from Euclidean expectations at around a milliJansky and a corresponding evolutionary bump between 0.2-0.4mJy consistent with previous mid-infrared surveys with ISO and Spitzer at 15 and 24{mu}m. We compare our results with galaxy evolution models confirming the striking divergence from the non-evolving scenario. The models and observations are in broad agreement implying that the source counts are consistent with a strongly evolving population of luminous infrared galaxies at redshifts higher than unity. Integrating our source counts down to the limit of the NEP survey at the 150{mu}Jy level we calculate that AKARI has resolved approximately 55 per cent of the 18{mu}m cosmic infrared background relative to the predictions of contemporary source count models.
- ID:
- ivo://CDS.VizieR/J/ApJ/784/53
- Title:
- AKARI NIR spectral atlas of Galactic HII regions
- Short Name:
- J/ApJ/784/53
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Using a large collection of near-infrared spectra (2.5-5.4 {mu}m) of Galactic HII regions and HII region-like objects, we perform a systematic investigation of astronomical polycyclic aromatic hydrocarbon (PAH) features. Thirty-six objects were observed using the infrared camera on board the AKARI satellite as a part of a director's time program. In addition to the well known 3.3-3.6 {mu}m features, most spectra show a relatively weak emission feature at 5.22 {mu}m with sufficient signal-to-noise ratios, which we identify as the PAH 5.25 {mu}m band (previously reported).
- ID:
- ivo://CDS.VizieR/J/A+A/548/A29
- Title:
- IR source catalog of AKARI NEP-Wide field
- Short Name:
- J/A+A/548/A29
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The InfraRed Camera (IRC) onboard AKARI has a comprehensive wavelength coverage with 9 photometric bands at 2-24 micron. Based on the NEP-Wide survey of AKARI (which covered a 5.4 sq.deg circular area centered on the NEP), we constructed a catalog for the infrared sources found in the survey area. Here we present the catalog containing about 114,800 sources detected at the nine IRC filter bands. This is a band-merged catalogue including all of the photometry results from the supplementary optical data as well as the IRC bands. To validate a source at a given IRC band, we searched counterparts in the other bands. The band-merging was done based on this cross-matching of the sources among the filter bands. If there is no detection in a certain band, we assigned the 99.000. The NIR sources having no counterpart in any other bands are finally excluded to avoid the false objects. See the reference for the details of the NEP-Wide survey and data reduction.
