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Experimental Astronomy

, Volume 33, Issue 1, pp 197–209 | Cite as

A pipeline for the ROTSE–IIId archival data

  • Bülent B. Güçsav
  • Cahit Yeşilyaprak
  • Sinan K. Yerli
  • Nazım Aksaker
  • Umit Kızıloğlu
  • Deniz Çoker
  • Elanur Dikicioğlu
  • Mustafa E. Aydın
Original Article

Abstract

We have constructed a new, fast, robust and reliable pipeline to detect variable stars from the ROTSE-IIId archival data. Turkish share of ROTSE-III archive contains approximately one million objects from a large field of view (1.85°) and it considerably covers a large portion of northern sky (δ > − 25°). The unfiltered ROTSE-III magnitude of the objects ranges from 7.7 to 16.9. The main stages of the new pipeline are as follows: Source extraction, astrometry of the objects, light curve generation and inhomogeneous ensemble photometry. A high performance computing (HPC) algorithm has also been implemented into the pipeline where we had a good performance even on a personal computer. Running the algorithms of the pipeline on a cluster decreases analysis time significantly from weeks to hours. The pipeline is especially tested against long period variable stars with periods of a few hundred days (e.g Mira and SR) and variables having periods starting from a few days to a few hundred days were detected.

Keywords

Software: pipeline Methods: data analysis Telescopes: ROTSE–IIId 

Notes

Acknowledgements

This project utilizes data obtained by the Robotic Optical Transient Search Experiment (ROTSE). ROTSE is a collaboration of Lawrence Livermore National Lab, Los Alamos National Lab and the University of Michigan (http://www.rotse.net).

All observations were made with the ROTSE–IIId telescope and the archival data of ROTSE–IIId obtained at the TÜBİTAK (Turkish Scientific and Research Council) National Observatory (TUG), so we thank to ROTSE–III Collaboration and TUG for the optical and archival facilities (TUG - ROTSE–IIId projects of Turkish observers).

We also thank Prof. Dr. Ü. Kızıloğlu for consulting, suggestions and helps.

This study was supported by TÜBİTAK with the project TBAG–108T475.

This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France and cdsclient tool located at CDS and NASA Astrophysics Data System Bibliographic Services.

References

  1. 1.
    Akerlof, C.W., Kehoe, R.L., McKay, T.A., Rykoff, E.S., Smith, D.A., Casperson, D.E., McGowan, K.E., Vestrand, W.T., Wozniak, P.R., Wren, J.A., Ashley, M.C.B., Phillips, M.A., Marshall, S.L., Epps, H.W., Schier, J.A.: The ROTSE-III robotic telescope system. Publ. Astron. Soc. Pac. 115, 132–140 (2003)ADSCrossRefGoogle Scholar
  2. 2.
    Baykal, A., Kızıloǧlu, Ü., Kızıloǧlu, N., Balman, Ş., Inam, S.Ç.: X-ray outburst of 4U 0115+634 and ROTSE observations of its optical counterpart V635 Cas. Astron. Astrophys. 439, 1131–1134 (2005)ADSCrossRefGoogle Scholar
  3. 3.
    Bertin, E: Automatic Astrometric and Photometric Calibration with SCAMP. In: Astronomical Data Analysis Software and Systems XV, Astronomical Society of the Pacific Conference Series, vol. 351, pp 112–115 (2006)Google Scholar
  4. 4.
    Bertin, E., Arnouts, S.: SExtractor: Software for source extraction. Astron. Astrophys. Suppl. 117, 393–404 (1996)ADSCrossRefGoogle Scholar
  5. 5.
    Bilir, S., Güver, T., Aslan, M.: Separation of dwarf and giant stars with ROTSE-IIId. Astron. Nachr. 327, 693–697 (2006)ADSCrossRefGoogle Scholar
  6. 6.
    Dikicioğlu, E.: Multiple periods for semiregular (SR) variable stars. Master’s thesis, Atatürk University, Erzurum, Turkey (2011)Google Scholar
  7. 7.
    Güçsav, B.B.: Detection of different types of celestial objects from robotic telescope archives. Master’s thesis, Ankara University, Ankara, Turkey (2010)Google Scholar
  8. 8.
    Henden, A.A., Kaitchuck, R.H.: Astronomical Photometry: A Text and Handbook for the Advanced Amateur and Professional Astronomer (1990)Google Scholar
  9. 9.
    Honeycutt, R.K.: CCD ensemble photometry on an inhomogeneous set of exposures. Astron. Soc. Pac. 104, 435–440 (1992)ADSCrossRefGoogle Scholar
  10. 10.
    Kızıloǧlu, Ü., Kızıloǧlu, N., Baykal, A.: ROTSE observations of the young cluster IC 348. Astron. J. 130, 2766–2777 (1995)Google Scholar
  11. 11.
    Kızıloǧlu, Ü., Ozbilgen, S., Kızıloǧlu, N., Baykal, A.: Optical and X-ray outbursts of Be/X-ray binary system SAX J2103.5+4545. Astron. Astrophys. 508, 895–900 (2009)ADSCrossRefGoogle Scholar
  12. 12.
    Lomb, N.R.: Least-squares frequency analysis of unequally spaced data. Astrophys. Space Sci. 39, 447–462 (1976)ADSCrossRefGoogle Scholar
  13. 13.
    Monet, D.G.: The 526,280,881 objects in the USNO-A2.0 catalog. Bull. Am. Astron. Soc. 30, 1427 (1998)ADSGoogle Scholar
  14. 14.
    Monet, D.G., Levine, S.E., Canzian, B., Ables, H.D., Bird, A.R., Dahn, C.C., Guetter, H.H., Harris, H.C., Henden, A.A., Leggett, S.K., Levison, H.F., Luginbuhl, C.B., Martini, J., Monet, A.K.B., Munn, J.A., Pier, J.R., Rhodes, A.R., Riepe, B., Sell, S., Stone, R.C., Vrba, F.J., Walker, R.L., Westerhout, G., Brucato, R.J., Reid, I.N., Schoening, W., Hartley, M., Read, M.A., Tritton, S.B.: The USNO-B catalog. Astron. J. 125, 984–993 (2005)ADSCrossRefGoogle Scholar
  15. 15.
    Reegen, P.: SigSpec. I. Frequency- and phase-resolved significance in Fourier space. Astron. Astrophys. 467, 1353–1371 (2007)ADSCrossRefGoogle Scholar
  16. 16.
    Rykoff, E.S., Aharonian, F., Akerlof, C.W., Alatalo, K., Ashley, M.C.B., Güver, T., Horns, D., Kehoe, R.L., Kiziloǧlu, Ü., McKay, T.A., Özel, M., Phillips, A., Quimby, R.M., Schaefer, B.E., Smith, D.A., Swan, H.F., Vestrand, W.T., Wheeler, J.C., Wren, J., Yost, S.A.: A search for untriggered GRB afterglows with ROTSE-III. Astrophys. J. 631, 1032–1038 (2005)ADSCrossRefGoogle Scholar
  17. 17.
    Saesen, S., Carrier, F., Pigulski, A., Aerts, C., Handler, G., Narwid, A., Fu, J.N., Zhang, C., Jiang, X.J., Vanautgaerden, J., Kopacki, G., Steslicki, M., Acke, B., Poretti, E., Uytterhoeven, K., Gielen, C., Ostensen, R., De Meester, W., Reed, M.D., Kolaczkowski, Z., Michalska, G., Schmidt, E., Yakut, K., Leitner, A., Kalomeni, B., Cherix, M., Spano, M., Prins, S., van Helshoecht, V., Zima, W., Huygen, R., Vandenbussche, B., Lenz, P., Ladjal, D., Puga Antolin, E., Verhoelst, T., De Ridder, J., Niarchos, P., Liakos, A., Lorenz, D., Dehaes, S., Reyniers, M., Davignon, G., Kim, S.L., Kim, D.H., Lee, Y.J., Lee, C.U., Kwon, J.H., Broeders, E., van Winckel, H., Vanhollebeke, E., Waelkens, C., Raskin, G., Blom, Y., Eggen, J.R., Degroote, P., Beck, P., Puschnig, J., Schmitzberger, L., Gelven, G.A., Steininger, B., Blommaert, J., Drummond, R., Briquet, M., Debosscher, J.: Photometric multi-site campaign on the open cluster NGC 884. I. Detection of the variable stars. Astron. Astrophys. 515, A16 (2010)ADSCrossRefGoogle Scholar
  18. 18.
    Scargle, J.D.: Studies in astronomical time series analysis. II—Statistical aspects of spectral analysis of unevenly spaced data. Astrophys. J. 263, 835–853 (1982)ADSCrossRefGoogle Scholar
  19. 19.
    Stellingwerf, R.F.: Period determination using phase dispersion minimization. Astrophys. J. 224, 953–960 (1978)ADSCrossRefGoogle Scholar
  20. 20.
    Wozniak, P.R., Williams, S.J., Vestrand, W.T., Gupta, V.: Identifying red variables in the northern sky variability survey. Astron. J. 128, 2965–2976 (2004)ADSCrossRefGoogle Scholar
  21. 21.
    Yeşilyaprak, C., Yerli, S., Güçsav, B., Aksaker, N., Dikicioğlu, E., Helvacı, M., Çoker, D., Aydın, M., Dinçel, B., Uzun, N.: Long-term variations and periods of Mira stars from ROTSE–IIId. New Astron. (2011). doi: 10.1016/j.newast.2011.11.010 Google Scholar
  22. 22.
    Young, A.T., Genet, R.M., Boyd, L.J., Borucki, W.J., Lockwood, G.W., Henry, G.W., Hall, D.S., Smith, D.P., Baliumas, S.L., Donahue, R., Epand, D.H.: Precise automatic differential stellar photometry. Astron. Soc. Pac. 103, 221–242 (1991)ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Bülent B. Güçsav
    • 1
  • Cahit Yeşilyaprak
    • 2
  • Sinan K. Yerli
    • 3
  • Nazım Aksaker
    • 4
  • Umit Kızıloğlu
    • 3
  • Deniz Çoker
    • 1
  • Elanur Dikicioğlu
    • 2
  • Mustafa E. Aydın
    • 1
  1. 1.Science Faculty, Astronomy & Space Sciences DepartmentAnkara ÜniversitesiAnkaraTurkey
  2. 2.Faculty of Science, Department of PhysicsAtatürk UniversityErzurumTurkey
  3. 3.Physics DepartmentOrta Doğu Teknik ÜniversitesiAnkaraTurkey
  4. 4.Vocational School of Technical SciencesÇukurova ÜniversitesiAdanaTurkey

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