IRTS Data
We supply two data products based on the instruments on board IRTS.
- Point Source Catalog (PSC)
- Spatial Intensity Map
IRTS NIRS Point Source Catalogue
The Near-Infrared Spectrometer (NIRS) Point Source Catalog (PSC) contains spectra of 14,223 sources in which 4,002 sources are in good quality. Late-type stars, normal stars, and other red objects are included. NIRS covered from 1.4 to 4.0 µm by 24 spectral channels with the resolution of Δλ = 0.13 µm. The completeness level of the catalog is 10 ~ 20 Jy for the entire wavelength range.
Data
Documents
References
IRTS MIRS Point Source Catalogue
The Mid-Infrared Spectrometer (MIRS) Point Source Catalog (PSC) contains spectra of 536 sources. Many of the detected sources are mas-losing stars. A few HII regions and one asteroid 01 Ceres are included. MIRS covered from 4.5 to 11.7 µm by 32 spectral channels with the resolution of Δλ = 0.23 ~ 0.36 µm.
Data
- Old versions : ver.2.0 / ver.1.1 / ver.1.0
- Data list
- Data Search - Interactive data search by Source Name or Position
Documents
References
IRTS Spatial Intensity Map
Data set of Spatial Intensity Map contains 1 map image and 4 supplemental data. Each image covers ~ 12 deg squares.
Data
FILM CII ver. 2.0 [quick look]
FILM 155micron ver. 2.0 / ver. 2.1 (*1) [quick look]
FIRP 250micron ver. 1.0 [quick look]
FIRP 400micron ver. 1.0 [quick look]
FIRP 700micron ver. 1.0 [quick lool]
MIRS 7.7micron ver. 1.0 (*2) [quick look]
These data are in FITS format. The data sets are as follows;
- Line intensity map &ly;*-raw.fits>
- Statistical error (1-sigma) map <*-err.fits>
- Map of sample number in a pixel <*-smp.fits>
- Interpolated line intensity map <*-intp.fits>
Documents
FILM map data executive summary
Data Number | 1 | 2 | ||
Data | 155 μm Continuum | [CII] Line | ||
Band Center | cm-1 | 64.4 | 63.4 | |
μm | 155.3 | 157.7 | ||
Resolution | cm-1 | 0.495 | (0.155) | |
μm | 1.19 | (0.386) | ||
Resolving Power | 130 | (409) | ||
Beam Size (FWHM) | 8'x13' (scanning direction)x(cross-scanning direction) | |||
System NEP | W Hz-1/2 | 1.8x10-16 | 6.0x10-17 | |
Target | Continuum | [CII] Line | ||
RMS Noise (without stripe noise) | in nIn | W m-2 sr-1 | 2x10-7 | |
in In | MJy sr-1 | 10 | ||
Uncertainty in Zero Level (including stripe noise) | in nIn | W m-2 sr-1 | 6x10-7 | |
in In | MJy sr-1 | 30 | ||
Uncertainty in Intensity Scale | -19% to +26% | |||
Pixel Size | 4'x4' | 4'x4' | ||
Number of Pixel | 192x192 | 192x192 | ||
Image Size | 12.8 deg x12.8 deg | 12.8 deg x12.8 deg | ||
Uncertainty in Map Position | 4'-8' | 4'-8' |
* Caveat *
- (July 2021) Recently, problems are found in the ver. 2.1 data (IRTS-FILM-155_Image_2.1) for the following 7 scan regions: North Scan (ns) : 18, 20, 21, 29, and South Scan (ss) : 18, 21, 44. There are pixels with incorrect values in these datasets. Please use ver.2.0 data instead for these regions (IRTS-FILM-155_Image_2.0). We apologize for the inconvenience.
- (February 2023) The MIRS image file in this directory has obvious defects. It has many empty pixels, presumably due to a mismatch between the spatial sampling of the instrument and the image pixel size. This problem cannot be fixed, and users are advised to use this image cautiously.
- (April 2023) NS37 and SS53 are identical to NS01 and SS01, respectively. They were created for cross-check purpose and were not necesserrily downloaded.