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The Korean Astronomical Society (한국천문학회)
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THE AKARI FIS CATALOGUE OF YSOS AND EXTRAGALACTIC OBJECTS

  • Toth, L. Viktor (Department of Astronomy, Eotvos University Budapest) ;
  • Marton, Gabor (Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences) ;
  • Zahorecz, Sarolta (Department of Astronomy, Eotvos University Budapest) ;
  • Balazs, Lajos G. (Department of Astronomy, Eotvos University Budapest) ;
  • Nagy, Andrea (Ferenc Rakoczi II. Transcarpathian Hungarian Institute)
  • Received : 2015.06.02
  • Accepted : 2016.11.01
  • Published : 2017.03.31
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Abstract

The point sources in the Bright Source Catalogue of the AKARI Far-Infrared Surveyor (FIS) were classified based on their FIR and mid-IR fluxes and colours into young stellar object (YSO) and extragalactic source types using a Quadratic Discriminant Analysis method (QDA) and Support Vector Machines (SVM). The reliability of the selection of YSO candidates is high, and the number of known YSO candidates were increased significantly, that we demonstrate in the case of the nearby open cluster IC348. Our results show that we can separate galactic and extragalactic AKARI point sources in the multidimensioal space of FIR fluxes and colours with high reliability, however, differentiating among the extragalactic sub-types needs further information.

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References

  1. Andersson, B. -G. Wannier, P. G. Moriarty-Schieven, G. H. Bakker, E. J., 2000, The Nature of the IRAS Ring G159.6-18.5 in Perseus and Its Exciting Star HD 278942, AJ, 119, 1325 https://doi.org/10.1086/301258
  2. Andre, Ph., Ward-Thompson, D., & Barsony, M., 1993, Submillimeter continuum observations of ${\rho}$ Ophiuchi A - The candidate protostar VLA 1623 and prestellar clumps, ApJ, 406, 122 https://doi.org/10.1086/172425
  3. Contreras, Y., Schuller, F., Urquhart, J. S., et al., 2013, ATLASGAL - compact source catalogue: $330^{\circ}$ < l < $21^{\circ}$ A&A, 549, 45 https://doi.org/10.1051/0004-6361/201220155
  4. Cutri, R. M. et al., 2012, VizieR Online Data Catalog: WISE All-Sky Data Release, yCat, 2311, 0
  5. Greene, T. P., Wilking, B. A., Andre, Ph., et al., 1994, Further mid-infrared study of the ${\rho}$ Ophiuchi cloud young stellar population: Luminosities and masses of pre-main-sequence stars, ApJ, 434, 614 https://doi.org/10.1086/174763
  6. Herbig, G. H., 1998, The Young Cluster IC 348, ApJ, 497, 736
  7. Ichikawa, K., Ueda, Y., Terashima, Y., et al., 2012, Mid- and Far-infrared Properties of a Complete Sample of Local Active Galactic Nuclei, ApJ, 754, 45 https://doi.org/10.1088/0004-637X/754/1/45
  8. Lada, C. J., 1987, Star formation - From OB associations to protostars, IAUS, 115, 1
  9. Lee N., Williams, J. P., & Cieza, L. A., 2011, Protoplanetary Disk Masses In IC348: A Rapid Decline In The Population Of Small Dust Grains After 1 Myr, ApJ, 736, 135 https://doi.org/10.1088/0004-637X/736/2/135
  10. Ma lek, K., Solarz, A., Pollo, A. et al., 2013, The VIMOS Public Extragalactic Redshift Survey (VIPERS) A support vector machine classication of galaxies, stars, and AGNs, A&A, 557, 16
  11. Myers, P. C. & Ladd, E. F., 1993, Bolometric temperatures of young stellar objects, ApJ, 413, 47 https://doi.org/10.1086/186956
  12. Planck Collaboration, et al., 2011, Planck early results. I. The Planck mission, A&A, 536, A1 https://doi.org/10.1051/0004-6361/201116464
  13. Planck Collaboration, et al., 2011, Planck early results. XXIII. The rst all-sky survey of Galactic cold clumps, A&A, 536, A23 https://doi.org/10.1051/0004-6361/201116472
  14. Pollo, A., Rybka, F., Takeuchi, T. T., 2010, Star-galaxy separation by far-infrared color-color diagrams for the AKARI FIS all-sky survey (bright source catalog version ${\beta}$-1), A&A, 514, 3
  15. Robitaille, Th. P., Whitney, B. A., Indebetouw, R., et al., 2007, Interpreting Spectral Energy Distributions from Young Stellar Objects. II. Fitting Observed SEDs Using a Large Grid of Precomputed Models, ApJS, 169, 328 https://doi.org/10.1086/512039
  16. Takita, S., Kataza, H., Kitamura, Y., et al., 2010, The AKARI/IRC mid-infrared all-sky survey, A&A, 519, 83 https://doi.org/10.1051/0004-6361/200913475
  17. Toth, L. V., Zahorecz, S., Marton, G., et al., 2013, Pattern analysis of young stellar clusters, Proceedings of the International Astronomical Union, 292, 113
  18. Toth, L. V., Marton, G. Zahorecz, S., et al., 2014, The AKARI Far-Infrared Surveyor young stellar object catalog, PASJ, 66, 17 https://doi.org/10.1093/pasj/pst017
  19. Toth, L. V., Zahorecz, S., & Marton, G., et al., 2015, Star formation in Taurus Auriga Perseus and California nebulae, Proceedings of the International Astronomical Union, Volume 315, submitted.
  20. Vapnik, V. N., 1995, The Nature of Statistical Learning Theory (Springer)
  21. Watson, R. A., Rebolo, R., Rubino-Martin, J. A., et al., 2005, Detection of Anomalous Microwave Emission in the Perseus Molecular Cloud with the COSMOSOMAS Experiment, ApJ, 624, L89 https://doi.org/10.1086/430519
  22. Yamamura, I., Makiuti, S., Ikeda, N., et al., 2010, VizieR Online Data Catalog: AKARI/FIS All-Sky Survey Point Source Catalogues (ISAS/JAXA, 2010), yCat, 2298, 0
  23. Wang, L., Rowan-Robinson, M., Norberg, P., et al., 2014, The Revised IRAS-FSC Redshift Catalogue (RIFSCz), MNRAS, 442, 2739 https://doi.org/10.1093/mnras/stu915