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Student Number 92229009
Author Po-Chieh Yu(\B)
Author's Email Address m929009@astro.ncu.edu.tw
Statistics This thesis had been viewed 1764 times. Download 204 times.
Department Graduate Institute of Astronomy
Year 2004
Semester 2
Degree Master
Type of Document Master's Thesis
Language English
Title Dust Morphology of HBLR and Non-HBLR Seyfert 2 Galaxies
Date of Defense 2005-06-21
Page Count 63
Keyword
  • AGN
  • dust morphology
  • polarization
  • starburst galaxies
  • Abstract We investigate the nuclear dust properties of Hidden Broad Line Region (HBLR) and non-HBLR Seyfert 2 galaxies (Sy2s). Optical images obtained from the Hubble Space Telescope for a selected sample of HBLR and non-HBLR Sy2s are fitted with the GALFIT package (Peng et al. 2002) to probe the inner structures of these galaxies within the central 1 kpc regions. Most of the galaxies show complicated dust features in the
    regions. However, the dust morphology shows no significant di erence between the HBLR and non-HBLR Sy2s. Dust masses inside the 1 kpc nuclear regions (M_1kpc) are estimated from the obscuration levels in the central regions of these galaxies. We compare our results with other observed properties, including [OIII], far infrared, and radio emission. We find that HBLR and non-HBLR Sy2s are dominated by di erent emission mechanisms and suggest that they are intrinsically di erent and can not be explained by the standard unification model.
    Table of Content Chapter 1: Introduction (Page 1)
    Chapter 2: Sample Selection and Method (Page 4)
    Chapter 3: Results and Discussion (Page 13)
    Chapter 4: Summary and Conclusions (Page 30)
    Appendix A: Results of Fitting with Galfit (Page 35)
    Appendix B: Results of Fitting with Ellipse (Page 44)
    Reference Alexander, D. M. 2001, MNRAS, 320, L15
    Antonucci, R. R. J., & Miller, J. S. 1985, ApJ, 297, 621
    Antonucci, R. R. J. 1993, ARA&A, 31, 473
    Beichman, C. A., Soifer, B. T., Helou, G., & Chester, T. J. 1986, ApJ, 308, L1
    Clavel, J., Wamstekerm, W., & Glass, I. S. 1989, ApJ, 337, 236
    Condon, J.J., Huang, Z. -P., & Yin, Q, F. 1991, ApJ, 378, 65
    Danese, L., Zitelli, V., Granato, G. L., Wade, R., De Zotti, G., & Mandolesi, N. 1992,ApJ, 399, 38
    Deluit, S. J. 2004, A&A, 415, 39
    Fukuda, H., Wada, K., & Habe, A. 1998, MNRAS, 295, 463
    Gao, Y., & Solomon, P. M. 2004, ApJ, 606, 271
    Gao, Y., & Solomon, P. M. 2004, ApJS, 152, 63
    Gu, Q., Maiolino, R., & Dultzin-Hacyan, D. 2001, A&A, 366, 765
    Gu, Q., & Huang, J. 2002, ApJ, 579, 205
    Heisler, C. A., Lumsden, S. L., & Bailey, J. A. 1997, Nature, 385, 700
    Helou, G., Soifer, B. T., & Rowan-Robinson, M. 1985, ApJ, 298, L7
    Ho, L. C., Filippenko, A. V., & Sargent, W. L. W. 1997, ApJS, 112, 315
    Ja e, W. et al. 2004, Nature, 429, 47
    Malkan, M. A., Gorjian, V., & Tam, R. 1998, ApJS, 117, 25
    Martini, P., Regan, M. W., Mulchaey, J. S., & Pogge, R. W. 2003, ApJS, 146, 353
    Montenegro, L. E., Yuan, C., & Elmegreen, B. G. 1999, ApJ, 520, 592
    Moran, E. C., Barth, A. J., Kay, L. E., & Filippenko, A. V. 2000, ApJ, 540, L73
    Moran, E. C., Kay, L. E., Davis, M., Filippenko, A. V., & Barth A. J. 2001, ApJ, 556,L75
    Nagao, T., Kawabata, K. S., Murayama, T., Ohyama, Y., Taniguchi, Y., Sumiya, R., &Sasaki, S. S. 2004, AJ, 128, 109
    Peng, C.-Y., Ho, L. C., Impey, C. D., & Rix, H.-W. 2002, AJ, 124, 266
    Rieke, G. H. 1978, ApJ, 226, 550
    Sadler, E. M., & Gerhard, O. E. 1985, MNRAS, 214, 177
    Terlevich, R., Tenorio-Tagle, G., & Melnick, J. 1992, MNRAS, 255, 713
    Tran, H. D. 1995, ApJ, 440, 565
    Tran, H. D., Brotherton, M. S., Stanford, S. A., van Breugel, W., & Dey, A. 1999, ApJ,516, 85
    Tran, H. D. 2001, ApJ, 554, L19
    Tran, H. D. 2003, ApJ, 583, 632
    van Dokkum, P. G., & Franx, M. 1995, AJ, 110, 2027
    Young, S., Hough, J. H., Efstathiou, A., Wills, B. J., Axon, D. J., Bailey, J. A., & Ward, M. J. 1996, MNRAS, 279, L72
    Young, S., Hough, J. H., Efstathiou, A., Wills, B. J., Bailey, J. A., Ward, M. J. & Axon, D. J. 1996, MNRAS, 281, 1206
    Advisor
  • Chorng-Yuan Hwang(R)
  • Files
  • 92229009.pdf
  • approve in 1 year
    Date of Submission 2005-07-11

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