Age and Temperature of Globular-Open Star Clusters Case Study : M3 M35 and M67

Authors

  • Chewa Thassana Department of Physics, Faculty of Science and Technology, Rambhai Barni Rajabhat University
  • Wiraporn Maithong Department of Physics and General Science, Faculty of Science and Technology, Chiang Mai Rajabhat University, Chiangmai,Thailand

Keywords:

Globular-Open, Age and Temperature, M3, M35, M67

Abstract

In this work, the age and the temperature of the globular cluster M3 and the open clusters M37 and M67 were observed by CCD Photometer via a 0.5-meter Rithchey-Chertien Reflecting Telescope at Regional Observatory for the Public Nakhon Ratchasima, Thailand ; images were obtained of the cluster stars in B and V photometric filter. The magnitude of the cluster stars were analyzed by Iris and Aperture Photometry Tool (ATP) program. The age and temperature of M3, M35 and M67 clusters were calculated by the apparent magnitude and color index (B-V) of the Hertzsprung-Russell diagram . Our results shown that the both open cluster M35 and M67 were found to lie at a distance of 2,700 light years (832pc) from the Earth. In addition, the M35 is approximately 110 million years old and the temperature in range of 7,000 -13,000K. Meanwhile M67 is roughly 3.11 billion years old, the temperature is about 4,400K to 6,400K. However, we determined that the globular cluster M3 is approximately 11.1 billion years old and located 34,000 light years (10,420pc) away from the Earth, while temperature is around 3,600 -6,800K.

References

Machholz Don, The observing guide to the Messier marathon : a handbook and atlas, Cambridge University Press, ISBN 0-521-80386-1(2002)

Goldsbury Ryan and et al., The ACS servey galactic clobular clusters.X. new determinations of centrers for 65 clusters, The Astronomcal Journal ,140 (6), p 1830-1837(2010)

Messier 3, SIMBAD Astronomical Object Dartabase, retrieved ,11-15 (2006)

Porbes Duncan A. and Bridges Terry, Accreted versus in situ Milky Way globular clusters, Monthly Notices of the Royal Astronomical Societyl, 404 (3), p 1203-1214(2010)

http://astropixels.com/openclusters/M35-01.html.

F.J. Ballesteros, New insights into black bodies, IMBAD, arXiv:1201.1089v2,p1-8 (2012)

Shim on Naim and Evgeny Griv. Examing the M67 Classification as an Open Cluster, International Journal of Astronomy and Astrophysics,2, p 167-173(2012)

Wayne Osborn, Measures of the Physica; Properties of Clobular-Cluster Giants, The Astrophysical Journal, 186, p 725-739(1973)

Surrazine. A.R., Steinhauer, A. J. B and et al., WIYN Open Cluster Study: UBVRI CCD Photometry of M35, J.American Astronomical Society, Vol. 32, p.742(2000)

Don A. Vandenberg and P.B. Stetson, On the Old Open Clusters M67 and NGC 188: Convective Core Overshooting, Color Temperature Relations, Distances, and Ages, the Astronomical Society of the Pacific, 116:997–1011(2004)

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Published

2017-11-09

How to Cite

[1]
Thassana, C. and Maithong, W. 2017. Age and Temperature of Globular-Open Star Clusters Case Study : M3 M35 and M67. Jurnal Sains Dasar. 6, 2 (Nov. 2017), 98–102.

Issue

Vol. 6 No. 2 (2017): October 2017

Section

Articles

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