DOI QR코드

DOI QR Code

NEW VARIABLE STARS IN THE REGION OF THE OPEN CLUSTER M48 (NGC 2548)

산개성단 M48(NGC 2548) 영역의 새로운 변광성

  • Received : 2011.11.07
  • Accepted : 2011.11.21
  • Published : 2011.12.31

Abstract

In the region of the open cluster M48 (NGC 2548), time-series BV CCD images were taken for 22 nights from February 28 in 2008 to March 17 in 2011. From this observation, we found 10 new variable stars. They include five eclipsing binaries, an RR Lyrae, two ${\delta}$ Scuti, and two semi-periodic and/or slow irregular type variable stars. We fail to find the member stars of the open cluster among the 10 variable stars.

Keywords

References

  1. Balaguer-Nunez, L., Jordi, C., & Galadi-Enriquez, D., 2005, uvby $H\beta$ CCD Photometry and Membership Segregation of the Open Cluster NGC 2548; Gaps in the Main Sequence of Open Clusters, A&A, 437, 457 https://doi.org/10.1051/0004-6361:20041792
  2. Ebbighausen, E. G., 1939, Proper Motions in the Galactic Cluster NGC 2548, ApJ, 90, 689 https://doi.org/10.1086/144139
  3. Jeon, Y. -B., 2008, Variable Stars in the Region of an Open Cluster M50, PKAS, 23, 17 https://doi.org/10.5303/PKAS.2008.23.2.017
  4. Jeon, Y. -B., 2009a, New Variable Stars in the Region of the Open Cluster M38 (NGC 1912) I: $\delta$ Scuti and $\gamma$ Doradus Type Stars, PKAS, 24, 9 https://doi.org/10.5303/PKAS.2009.24.1.009
  5. Jeon, Y. -B., 2009b, Variable Stars in the Region of an Young Open Cluster M29 (NGC 6913), PKAS, 24, 19 https://doi.org/10.5303/PKAS.2009.24.1.019
  6. Jeon, Y. -B., 2010a, New Variable Stars in the Region of the Open Cluster M38 (NGC 1912) II, PKAS, 25, 1
  7. Jeon, Y. -B., Kim, S. -L., Park, Y. -H., et al., 2005, Short-Period Variability Survey (SPVS) in BOAO, PKAS, 20, 21 https://doi.org/10.5303/PKAS.2005.20.1.021
  8. Jeon, Y. -B. & Lee, H. -R., 2010b, New Variable Stars in the Region of the Open Cluster M35 (NGC 2168), PKAS, 25, 167 https://doi.org/10.5303/PKAS.2010.25.4.167
  9. Jeon, Y. -B., Nam, K. -H., Park, Y. -H., et al., 2007, Preliminary Results for Short-Period Variability Survey (SPVS): New Field Variable Stars, PKAS, 22, 141 https://doi.org/10.5303/PKAS.2007.22.4.141
  10. Jin, H., Kim, S. -L., Lee, C. -U., et al., 2004, Reclassification of ROTSE-I $\delta$ Scuti Stars with Multiband Photometry and Fourier Decomposition, AJ, 128, 1847 https://doi.org/10.1086/423908
  11. Massey, P. & Davis, L. E., 1992, A User's Guide to Stellar CCD Photometry with IRAF
  12. Pesch, P., 1961, Photometric and Objective Prism Observations in Three Galactic Clusters, ApJ, 134, 602 https://doi.org/10.1086/147182
  13. Pojmanski, G., 2002, The All Sky Automated Survey. Catalog of Variable Stars. I. 0h - 6h Quarter of the Southern Hemisphere, AcA, 52, 397
  14. Rider, C. J., Tucker, D. L., Smith, J. A., Stoughton, C., et al., 2004, A Survey of Open Clusters in the u'g'r'i'z' Filter System. I. Results for NGC 2548 (M48), AJ, 127, 2210 https://doi.org/10.1086/382238
  15. Samus, N. N., Durlevich, O. V., et al., 2004, Combined General Catalogue of Variable Stars (Samus+2004), VizieR Online Data Catalog, 2250
  16. Sharma, S., Pandey, A. K., Ogura, K., Mito, H., et al., 2006, Wide-Field CCD Photometry Around Nine Open Clusters, AJ, 132, 1669 https://doi.org/10.1086/507094
  17. Stetson, P. B., 1987, DAOPHOT - A Computer Program for Crowded-Field Stellar Photometry, PASP, 99, 191 https://doi.org/10.1086/131977
  18. Wu, Z. Y., Tian, K. P., Balaguer-Nunez, L., et al., 2002, Determination of Proper Motions and Membership of the Open Star Cluster NGC 2548, A&A, 381, 464 https://doi.org/10.1051/0004-6361:20011474
  19. Wu, Z. -Y., Zhou, X., Ma, J., Jiang, Z. -J., & Chen, J. -S., 2006, Membership Determination of Open Cluster M48 Based on BATC 13-Band Photometry, PASP, 118, 1104 https://doi.org/10.1086/507050