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Year 2015, Volume: 10 Issue: 2, 75 - 86, 22.11.2015

Abstract

This work presents H (=6563Å) spectral lines from four different ionized sources (NGC281, NGC6992, NGC7000 ve NGC7635) was used. The DEFPOS Fabry-Perot spectrometer, located at the f/48 coude focus of the RTT150 telescope at TUBITAK National Observatory (TUG) in Antalya/Turkey, was used in our observations. A new 2048x2048 Andor iKon-L CCD imaging camera with TE cooling has been used along with the spectrometer. For intensity calibration of the data, we used spectral lines obtained from NGC7000 emission nebula (2000=20h58m04s.0,δ2000=+4435′43′′.0) with FOV of 4arcmin. We determined values of the intensity, the full weight half maximum (FWHM), and the radial velocity with respect to LSR for all data. The line width and radial velocity values obtained from our data were compared with early results from literature and these results were seen to be in close agreement with them

References

  • Joss B.H., Reynolds R.J., 2000. arXiv:astro-ph//0006058 v1, Encyclopedia of astronomy and astrophysics, MacMilan and Institute of Physics Publishing.
  • Tufte S.L, 1997. The WHAM spectrometer: Design, performance characteristics and first results, Ph.D. thesis, Physics Department, University of Wisconsin, USA.
  • Ferrière K.M., 2001. The Interstellar Environment of Our Galaxy (Observatoire Midi-Pyrénées, 31400 Toulouse, France), Reviews of Modern Physics, 73(4): 1031-1066.
  • Reynolds, R.J., 1984. Optical emission line studies and the warm ionized component of the local interstellar medium. International Colloquium On The Local Interstellar Medium.
  • Madsen G.J., Reynolds R.J., Haffner L.M., 2006. A multi wavelength optical emission line survey of warm ıonizet gas in the galaxy, The Astrophysical Journal, 652 (1):401-425.
  • Strömgren B., 1939. The physical state of interstellar hydrogen, Astrophysical Journal, 89: 526-547.
  • Roesler F.L., 1974. Fabry-Perot instruments for astronomy, Methods of Experimental Physics. Vol. 12, Academic Press. Inc. Part 12.
  • Nossal, S. M., Roesler, F. L., Reynolds, R. J., M. Haffner, S. Tufte, J. Bishop, and J. Percival, 2001. Geocoronal Balmer α intensity measurements using the WHAM Fabry-Perotfacility, J. Geophys. Res., 106: 5605-5616.
  • Şahan M., Yegingil I, Aksaker N., 2007.Observation of the geocoronal balmer alpha with defpos, Terrestrial, Atmospheric and Oceanic Science, 18 (1): 85–96.
  • Reynolds R. J., Roesler F. L., Scherb F., Harlander J., 1990. Fabry-Perot/Ccd Multi Channel Spectrometer for The Study of Warm Ionized Interstellar Gas and Extragalactic Clouds. SPIE The International Society For Optical Engineering. Instrumentation in Astronomy, VII, 1235: 610-621.
  • Coakley M. M., Roesler F.L., Reynolds R.J., Nossal S., 1996. Fabry-Perot CCD annular summing spectroscopy: study and ımplementation for astronomy applications, Applied Optics, 35 (33): 6479- 6493.
  • Şahan M., 2004. DEFPOS: Tasarımı özellikleri ve ilk sonuçları, Doktora Tezi, Çukurova Üniversitesi, Adana.
  • Sahan M., Yegingil I., Aksaker N., 2009. Hα measurements using DEFPOS/RTT150 telescope: instrumentation and observations, Research in Astronomy and Astrophysics, 9 (2): 237-248.
  • Mierkewicz E. J., 2002. Fabry-Perot Observations of The Hydrogen Geocorona, Ph.D. thesis, University of Wisconsin, Physics Department, USA.
  • Miller E.E., Roesler F.L., 1998. Applied optics, University of Wisconsin, (Eds: Murray A. Thompson), USA, pp. 550-780.
  • Mack J.E, Mcnutt D.P., Roesler F.L., Chabbal R., 1963. PEPSIOS Purely interferometric high resolution scanning spectrometer. I, The Plot Model, Applied Optics, 2 (9): 873-885.
  • Nossal S., Roesler F.L., Bishop J., Reynolds R.J., Haffner M., Tufte S., Percival J., Mierkiewicz E.J., 2001. Geocoronal halpha intensity measurements using the wisconsin halpha mapper fabry-perot facility, Journal of Geophysical Research, 106 (A4): 5605-5616.
  • Morgenthaler J. P., Harris W. M., Scherb F., Oliversen R. J., Doane N. E., Combi M. R., Marconi M. L., Smyth W. H., 2001. Large-Aperture [O I] 6300 Å photometry of Comet Hale-Bopp: Implications for the photochemistry of OH., The Astrophysical Journal, 563: 451-461.
  • Scherb F., 1981. Hydrogenp rates from ground-based Fabry-Perot observations of Comet Kohoutek, The Astrophysical Journal, 243 (1): 644-650.
  • Sahan M., Oflaz F. M., Yegingil I., Tel E., 2006. Hα line measurements from ten diffuse galactic sources using the DEFPOS facility, Astronomische Nachrichten, (88):789-798.
  • Fich M., Treffers R. R., Dahl G.P., 1990. Fabry-Perot H-alpha observations of Galactic H II regions, Astronomical Journal, 99: 622-637.
  • Lockman F.J., 1989. A survey of radio H II regions in the northern sky, Astrophysical Journal Supplement Series, 71: 469-479.
  • Blitz L., Fich M., Stark A.A., 1982. Catalog of CO radial velocities toward galactic H II regions, Astrophysical Journal Supplement Series, 49: 183-206.
  • Schneider S. E.; Terzian Y.; Purgathofer A.; Perinotto M., 1983. Radial velocities of planetary nebulae, Astrophysical Journal Supplement Series, 52: 399-423.
  • Fatih Mehmet Oflaz e-posta: fatihoflaz33@hotmail.com
  • Halil İbrahim Tıraş e-posta: itiras@gmail.com

Fabry Perot Tayfölçeri ve Dört Galaktik Hα Ölçümleri

Year 2015, Volume: 10 Issue: 2, 75 - 86, 22.11.2015

Abstract

Özet: Bu çalışma dört farklı iyonize olmuş hidrojen kaynağından (NGC281, NGC6992, NGC7000 ve NGC7635) Hα (=6563Å) alınan tayf çizgilerini vermektedir. Gözlemlerimizde TÜBİTAK Ulusal Gözlemevi’nde (TUG) bulunan RTT150 teleskopunun (f/48) coude çıkışına yerleştirilen DEFPOS Fabry-Perot tayfölçeri kullanılmıştır. Tayfölçer ile birlikte 2048x2048 piksel boyutlu termoelektrik (TE) soğutmalı Andor iKon-L CCD görüntüleme kamerası kullanılmıştır. Tayfların parlaklık kalibrasyonu için NGC7000 bulutsusundan (2000=20h58m04s.0, δ2000=+44◦35′43′′.0) 4 açı dakikalık bölgesinden alınan tayflar kullanılmıştır. Tüm verilerin parlaklık, yarı genişlik (FWHM) ve LSR’a göre hız değerleri belirlenmiştir. Elde edilen tüm kaynakların hız ve yarı genişlik değerleri literatürde verilen sonuçlarla karşılaştırılmış ve sonuçların uyumlu olduğu görülmüştür.

Anahtar kelimeler: Yıldızlararası ortam, HII bölgeleri, gezegenimsi bulutsular, Fabry-Perot tayfölçerleri, DEFPOS


Fabry Perot Spectrometers and Four Galactic Hα Observations

Abstract:This work presents H (=6563Å) spectral lines from four different ionized sources (NGC281, NGC6992, NGC7000 ve NGC7635) was used. The DEFPOS Fabry-Perot spectrometer, located at the f/48 coude focus of the RTT150 telescope at TUBITAK National Observatory (TUG) in Antalya/Turkey, was used in our observations. A new 2048x2048 Andor iKon-L CCD imaging camera with TE cooling has been used along with the spectrometer. For intensity calibration of the data, we used spectral lines obtained from NGC7000 emission nebula (2000=20h58m04s.0,δ2000=+44◦35′43′′.0) with FOV of 4arcmin. We determined values of the intensity, the full weight half maximum (FWHM), and the radial velocity with respect to LSR for all data. The line width and radial velocity values obtained from our data were compared with early results from literature and these results were seen to be in close agreement with them.

Key words: Interstellar medium, HII regions, planetary nebulae, Fabry-Perot spectrometer, DEFPOS

References

  • Joss B.H., Reynolds R.J., 2000. arXiv:astro-ph//0006058 v1, Encyclopedia of astronomy and astrophysics, MacMilan and Institute of Physics Publishing.
  • Tufte S.L, 1997. The WHAM spectrometer: Design, performance characteristics and first results, Ph.D. thesis, Physics Department, University of Wisconsin, USA.
  • Ferrière K.M., 2001. The Interstellar Environment of Our Galaxy (Observatoire Midi-Pyrénées, 31400 Toulouse, France), Reviews of Modern Physics, 73(4): 1031-1066.
  • Reynolds, R.J., 1984. Optical emission line studies and the warm ionized component of the local interstellar medium. International Colloquium On The Local Interstellar Medium.
  • Madsen G.J., Reynolds R.J., Haffner L.M., 2006. A multi wavelength optical emission line survey of warm ıonizet gas in the galaxy, The Astrophysical Journal, 652 (1):401-425.
  • Strömgren B., 1939. The physical state of interstellar hydrogen, Astrophysical Journal, 89: 526-547.
  • Roesler F.L., 1974. Fabry-Perot instruments for astronomy, Methods of Experimental Physics. Vol. 12, Academic Press. Inc. Part 12.
  • Nossal, S. M., Roesler, F. L., Reynolds, R. J., M. Haffner, S. Tufte, J. Bishop, and J. Percival, 2001. Geocoronal Balmer α intensity measurements using the WHAM Fabry-Perotfacility, J. Geophys. Res., 106: 5605-5616.
  • Şahan M., Yegingil I, Aksaker N., 2007.Observation of the geocoronal balmer alpha with defpos, Terrestrial, Atmospheric and Oceanic Science, 18 (1): 85–96.
  • Reynolds R. J., Roesler F. L., Scherb F., Harlander J., 1990. Fabry-Perot/Ccd Multi Channel Spectrometer for The Study of Warm Ionized Interstellar Gas and Extragalactic Clouds. SPIE The International Society For Optical Engineering. Instrumentation in Astronomy, VII, 1235: 610-621.
  • Coakley M. M., Roesler F.L., Reynolds R.J., Nossal S., 1996. Fabry-Perot CCD annular summing spectroscopy: study and ımplementation for astronomy applications, Applied Optics, 35 (33): 6479- 6493.
  • Şahan M., 2004. DEFPOS: Tasarımı özellikleri ve ilk sonuçları, Doktora Tezi, Çukurova Üniversitesi, Adana.
  • Sahan M., Yegingil I., Aksaker N., 2009. Hα measurements using DEFPOS/RTT150 telescope: instrumentation and observations, Research in Astronomy and Astrophysics, 9 (2): 237-248.
  • Mierkewicz E. J., 2002. Fabry-Perot Observations of The Hydrogen Geocorona, Ph.D. thesis, University of Wisconsin, Physics Department, USA.
  • Miller E.E., Roesler F.L., 1998. Applied optics, University of Wisconsin, (Eds: Murray A. Thompson), USA, pp. 550-780.
  • Mack J.E, Mcnutt D.P., Roesler F.L., Chabbal R., 1963. PEPSIOS Purely interferometric high resolution scanning spectrometer. I, The Plot Model, Applied Optics, 2 (9): 873-885.
  • Nossal S., Roesler F.L., Bishop J., Reynolds R.J., Haffner M., Tufte S., Percival J., Mierkiewicz E.J., 2001. Geocoronal halpha intensity measurements using the wisconsin halpha mapper fabry-perot facility, Journal of Geophysical Research, 106 (A4): 5605-5616.
  • Morgenthaler J. P., Harris W. M., Scherb F., Oliversen R. J., Doane N. E., Combi M. R., Marconi M. L., Smyth W. H., 2001. Large-Aperture [O I] 6300 Å photometry of Comet Hale-Bopp: Implications for the photochemistry of OH., The Astrophysical Journal, 563: 451-461.
  • Scherb F., 1981. Hydrogenp rates from ground-based Fabry-Perot observations of Comet Kohoutek, The Astrophysical Journal, 243 (1): 644-650.
  • Sahan M., Oflaz F. M., Yegingil I., Tel E., 2006. Hα line measurements from ten diffuse galactic sources using the DEFPOS facility, Astronomische Nachrichten, (88):789-798.
  • Fich M., Treffers R. R., Dahl G.P., 1990. Fabry-Perot H-alpha observations of Galactic H II regions, Astronomical Journal, 99: 622-637.
  • Lockman F.J., 1989. A survey of radio H II regions in the northern sky, Astrophysical Journal Supplement Series, 71: 469-479.
  • Blitz L., Fich M., Stark A.A., 1982. Catalog of CO radial velocities toward galactic H II regions, Astrophysical Journal Supplement Series, 49: 183-206.
  • Schneider S. E.; Terzian Y.; Purgathofer A.; Perinotto M., 1983. Radial velocities of planetary nebulae, Astrophysical Journal Supplement Series, 52: 399-423.
  • Fatih Mehmet Oflaz e-posta: fatihoflaz33@hotmail.com
  • Halil İbrahim Tıraş e-posta: itiras@gmail.com
There are 26 citations in total.

Details

Primary Language Turkish
Subjects Metrology, Applied and Industrial Physics
Journal Section Makaleler
Authors

Muhittin Şahan

Fatih Oflaz This is me

Halil Tıraş This is me

Publication Date November 22, 2015
Published in Issue Year 2015 Volume: 10 Issue: 2

Cite

IEEE M. Şahan, F. Oflaz, and H. Tıraş, “Fabry Perot Tayfölçeri ve Dört Galaktik Hα Ölçümleri”, Süleyman Demirel University Faculty of Arts and Science Journal of Science, vol. 10, no. 2, pp. 75–86, 2015.