Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
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A PHOTOMETRIC STUDY OF FIVE OPEN CLUSTERS IN THE SDSS

  • Ryu, Jin-Hyuk (Astronomy Program, Department of Physics and Astronomy, Seoul National University) ;
  • Lee, Myung-Gyoon (Astronomy Program, Department of Physics and Astronomy, Seoul National University)
  • Received : 2011.07.19
  • Accepted : 2011.09.17
  • Published : 2011.10.31
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Abstract

We present a photometric study of five open clusters (Czernik 5, Alessi 53, Berkeley 49, Berkeley 84, and Pfleiderer 3) in the Sloan Digital Sky Survey. The position and size of these clusters are determined using the radial number density profiles of the stars, and the member stars of the clusters are selected using the proper motion data in the literature. We estimate the reddening, distance and age of the clusters based on the isochrone fitting in the color-magnitude diagram. The foreground reddenings for these clusters are estimated to be E(B - V ) = 0.71 - 1.55 mag. The distances to these clusters are derived to be 2.0 - 4.4 kpc, and their distances from the Galactic center range from 7.57 kpc to 12.35 kpc. Their ages are in the range from 250 Myr to 1 Gyr. Berkeley 49 and Berkeley 84 are located in the Orion spur, Czernik 5 is in the Perseus arm, and Pfleiderer 3 and Alessi 53 are located beyond the Perseus arm.

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References

  1. Abazajian, K. N., et al. 2009, The Seventh Data Re- lease of the Sloan Digital Sky Survey, ApJS, 182, 543 https://doi.org/10.1088/0067-0049/182/2/543
  2. Ahumada, J. A., & Lapasset, E. 2007, New Catalogue of Blue Stragglers in Open Clusters, A&A, 463, 789 https://doi.org/10.1051/0004-6361:20054590
  3. An, D., et al. 2008, Galactic Globular and Open Clus- ters in the Sloan Digital Sky Survey. I. Crowded- Field Photometry and Cluster Fiducial Sequences in Ugriz, ApJS, 179, 326 https://doi.org/10.1086/592090
  4. An, D., et al. 2009, Galactic Globular and Open Clus- ters in the Sloan Digital Sky Survey. II. Test of The- oretical Stellar Isochrones, ApJ, 700, 523 https://doi.org/10.1088/0004-637X/700/1/523
  5. Andreuzzi, G., Bragaglia, A., Tosi, M., & Marconi, G. 2010, Old Open Clusters and the Galactic Metal- licity Gradient: Berkeley 20, Berkeley 66, and Tombaugh 2, MNRAS, 412, 1265
  6. Ann, H. B., et al. 2002, BOAO Photometric Survey of Galactic Open Clusters. II. Physical Parameters of 12 Open Clusters, AJ, 123, 905 https://doi.org/10.1086/338309
  7. Bertin, E., Mellier, Y., Radovich, M., Missonnier, G., Didelon, P., & Morin, B. 2002, The TERAPIX Pipeline, ASPC, 281, 228
  8. Camargo, D., Bonatto, C., & Bica, E. 2009, Astrophysical Parameters of 14 Open Clusters Projected Close to the Galactic Plane, A&A, 508, 211 https://doi.org/10.1051/0004-6361/200912786
  9. Carraro, G., Vazquez, R. A., & Moitinho, A. 2008, Blue Straggler Stars in Galactic Open Clusters and the Effect of Field Star Contamination, A&A, 482, 777 https://doi.org/10.1051/0004-6361:20078629
  10. Chen, L., Hou, J. L., &Wang, J. J. 2003, On the Galactic Disk Metallicity Distribution from Open Clusters. I. New Catalogs and Abundance Gradient, AJ, 125, 1397 https://doi.org/10.1086/367911
  11. Churchwell, E. et al. 2009, The Spitzer/GLIMPSE Surveys: A New View of the Milky Way, PASP, 121, 213 https://doi.org/10.1086/597811
  12. Dias, W. S., Alessi, B. S., Moitinho, A., & Lepine, J. R. D. 2002, New Catalogue of Optically Visible Open Clusters and Candidates, A&A, 389, 871 https://doi.org/10.1051/0004-6361:20020668
  13. Friel, E. D., et al. 2002, Metallicities of Old Open Clusters, AJ, 124, 2693 https://doi.org/10.1086/344161
  14. Froebrich, D., Scholz, A., & Raftery, C. L. 2007, A Systematic Survey for Infrared Star Clusters with ${\left|}b{\right|}$ < 20 Using 2MASS, MNRAS, 374, 399 https://doi.org/10.1111/j.1365-2966.2006.11148.x
  15. Girardi, L., Grebel, E. K., Odenkirchen, M., & Chiosi, C. 2004, Theoretical Isochrones in Several Photo- metric Systems II. The Sloan Digital Sky Survey Ugriz System, A&A, 422, 205 https://doi.org/10.1051/0004-6361:20040250
  16. Jester, S. et al. 2005, The Sloan Digital Sky Survey View of the Palomar-Green Bright Quasar Survey, AJ, 130, 873 https://doi.org/10.1086/432466
  17. Kronberger, M., et al. 2006, New Galactic Open Clus- ter Candidates from DSS and 2MASS Imagery, A&A, 447, 921 https://doi.org/10.1051/0004-6361:20054057
  18. Koposov, S. E., Glushkova, E. V., & Zolotukhin, I. Y. 2008, Automated Search for Galactic Star Clusters in Large Multiband Surveys. I. Discovery of 15 New Open Clusters in the Galactic Anticenter Region, A&A, 486, 771 https://doi.org/10.1051/0004-6361:20078630
  19. Lee, M. G. 1997, UBVI CCD Photometry of the Re- mote Old Open Cluster AM-2, AJ, 113, 2
  20. Lupton, R. H., Ivezic, Z., Gunn, J. E., Knapp, G., Strauss, M. A., & Yasuda, N. 2002, SDSS Imaging Pipelines, SPIE, 4836, 350 https://doi.org/10.1117/12.457307
  21. Mapelli, M., Sigurdsson, S., Ferraro, F. R., Colpi, M., Possenti, A., & Lanzoni, B. 2006, The Radial Dis- tribution of Blue Straggler Stars and the Nature of Their Progenitors, MNRAS, 373, 361 https://doi.org/10.1111/j.1365-2966.2006.11038.x
  22. Park, H. S., & Lee, M. G. 1999, UBVI Charge-Coupled Device Photometry of Two Old Open Clusters NGC 1798 and 2192, MNRAS, 304, 883 https://doi.org/10.1046/j.1365-8711.1999.02366.x
  23. Piatti, A. E., 2010, Evidence of Enhanced Forma- tion Episodes in the Galactic Open Cluster System, A&A, 513, 13
  24. Roeser, S., Kharchenko, N. V., Piskunov, A. E., Schilbach, E., Scholz, R. -D., & Zinnecker, H. 2010, Open Clusters and the Galactic Disk, AN, 331, 519
  25. Roeser, S., Demleitner, M., & Schilbach, E. 2010, The PPMXL Catalog of Positions and Proper Motions on the ICRS. Combining USNO-B1.0 and 2MASS, AJ, 139, 2440 https://doi.org/10.1088/0004-6256/139/6/2440
  26. Skrutskie, M. F., et al. 2006, The Two Micron All Sky Survey (2MASS), AJ, 131, 1163 https://doi.org/10.1086/498708
  27. Stetson, P. B. 1987, DAOPHOT - A Computer Pro- gram for Crowded-Field Stellar Photometry, PASP, 99, 191 https://doi.org/10.1086/131977
  28. Subramaniam, A., Carraro, G., & Janes, K. A. 2010, Optical Photometry and Basic Parameters of 10 Un- studied Open Clusters, MNRAS, 404, 1385
  29. Tadross, A. L. 2008, A Catalogue of Previously Un- studied Berkeley Clusters, MNRAS, 389, 285 https://doi.org/10.1111/j.1365-2966.2008.13554.x
  30. Tadross, A. L. 2009, The Fundamental Parameters of 60 Unstudied Open Star Clusters (Czernik, Dol- Dzim, Kronberger, and Turner), Ap&SS, 323, 383 https://doi.org/10.1007/s10509-009-0136-1
  31. York, D. G., et al. 2000, The Sloan Digital Sky Survey: Technical Summary, AJ, 120, 1579 https://doi.org/10.1086/301513

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