/ftp/cats/ii/327



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II/327              AKARI Far-Infrared Surveyor YSO catalog       (Toth+, 2014)
The following files can be converted to FITS (extension .fit or fit.gz)
	ysoc.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=II/327
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Beginning of ReadMe : II/327 AKARI Far-Infrared Surveyor YSO catalog (Toth+, 2014) ================================================================================ The AKARI Far-Infrared Surveyor young stellar object catalog. Toth L.V., Marton G., Zahorecz S., Balazs L.G., Ueno M., Tamura M., Kawamura A., Kiss Z.T., Kitamura Y. <Publ. Astron. Soc. Jap., 66, 17 (2014)> =2014PASJ...66...17T =2014yCat.2327....0T ================================================================================ ADC_Keywords: Protostars ; Stars, pre-main sequence ; Stellar distribution ; Fundamental catalog Keywords: catalogs - infrared: ISM - infrared: stars - ISM: bubbles - stars: formation Abstract: We demonstrate the use of the AKARI all-sky survey photometric data in the study of galactic star formation. Our aim was to select young stellar objects (YSOs) in the AKARI Far-Infrared Surveyor (FIS) Bright Source Catalogue. We used AKARI/FIS and Wide-field Infrared Survey Explorer (WISE) data to derive mid- and far-infrared colors of YSOs. Classification schemes based on quadratic discriminant analysis (QDA) have been given for YSOs and the training catalog for QDA was the whole-sky selection of previously known YSOs (i.e., listed in the SIMBAD database). A new catalog of AKARI FIS YSO candidates including 44001 sources has been prepared; the reliability of the classification is over 90%, as tested in comparison to known YSOs. As much as 76% of our YSO candidates are from previously uncatalogued types. The vast majority of these sources are Class I and II types according to the Lada classification. The distribution of AKARI FIS YSOs is well correlated with that of the galactic ISM; local over-densities were found on infrared loops and towards the cold clumps detected by Planck. Description: AKARI FSC BSC data was combined with mid-IR photometric data from the WISE All-Sky Data Release. Classification was made with quadratic discriminant analysis based on the mid- and far-IR colours and brightness values. 44001 sources were classified as young stellar object candidate. For each candidate AKARI FIS ID, celestial position (RA2000, DEC2000), WISE magnitudes measured in passbands centered at 3.4, 4.6, 12 and 22um (W1, W2, W3, W4), their corresponding errors (e_W1, e_W2, e_W3, e_W4), FIS flux densities measured in passbands with nominal wavelengths of 65, 90, 140 and 160um (F65, F90, F140, F160) and the corresponding flux qualities (F_QUAL), the probability of being YSO, SIMBAD main type and subtypes, the angular distance between the FIS source and the matching SIMBAD object and the SIMBAD ID of the matching object are listed.