References
Evans, A., Knoll, K., & Westphal, J. (2019, January 8). [Stages of galactic mergers]. Retrieved July 22, 2019, from https://www.sdss.org/press-releases/dont-judge-a-galaxy-by-its-cover-astronomers-develop-new-tool-to-find-merging-galaxies/
Fabian, A. C. (1999). Active galactic nuclei. Proceedings of the National Academy of Sciences, 96(9), 4749-4751. Retrieved from https://www.pnas.org/content/pnas/96/9/4749.full.pdf
McNally, E. (Ed.). (n.d.). Types and Classification of Galaxies. Retrieved from http://hosting.astro.cornell.edu/academics/courses/astro201/galaxies/types.htm
Narayan, R., & McClintock, J. E. (n.d.). Observational Evidence for Black Holes. 1-20. Retrieved from https://www.cfa.harvard.edu/~narayan/Benefunder/Narayan_McClintock.pdf
Peterson, B. M. (1997). AN INTRODUCTION TO ACTIVE GALACTIC NUCLEI. Retrieved from https://ned.ipac.caltech.edu/level5/Cambridge/frames.html
*Images used in the website have a link to them (click on them for original source). If there is no link, they were from DS9.
Fabian, A. C. (1999). Active galactic nuclei. Proceedings of the National Academy of Sciences, 96(9), 4749-4751. Retrieved from https://www.pnas.org/content/pnas/96/9/4749.full.pdf
McNally, E. (Ed.). (n.d.). Types and Classification of Galaxies. Retrieved from http://hosting.astro.cornell.edu/academics/courses/astro201/galaxies/types.htm
Narayan, R., & McClintock, J. E. (n.d.). Observational Evidence for Black Holes. 1-20. Retrieved from https://www.cfa.harvard.edu/~narayan/Benefunder/Narayan_McClintock.pdf
Peterson, B. M. (1997). AN INTRODUCTION TO ACTIVE GALACTIC NUCLEI. Retrieved from https://ned.ipac.caltech.edu/level5/Cambridge/frames.html
*Images used in the website have a link to them (click on them for original source). If there is no link, they were from DS9.