Studium nov v blízkých galaxiích
Thesis title in Czech: | Studium nov v blízkých galaxiích |
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Thesis title in English: | Novae in external galaxies |
Key words: | Novy, galaxie, CCD fotometrie |
English key words: | Novae, galaxy, CCD photometry |
Academic year of topic announcement: | 2019/2020 |
Thesis type: | diploma thesis |
Thesis language: | čeština |
Department: | Astronomical Institute of Charles University (32-AUUK) |
Supervisor: | doc. RNDr. Marek Wolf, CSc. |
Author: | hidden - assigned and confirmed by the Study Dept. |
Date of registration: | 27.11.2019 |
Date of assignment: | 28.11.2019 |
Confirmed by Study dept. on: | 17.12.2019 |
Guidelines |
V teoretické části práce se autorka bude zabývat teorií vzniku nov v galaxiích a obecně využitím nov jako indikátoru vzdálenosti v kosmologii.
V praktické části se diplomant seznámí s objevováním a CCD fotometrií nov v blízkých galaxiích, např. v galaxii M81. Cílem práce pak bude porovnání, statistický přehled a kritické zhodnocení populace nov ve vybraných galaxiích. |
References |
Carroll, B.W., Ostlie, D.A. 1996, An Introduction to Modern Astrophysics
Crayton, H. et al. 2020, A Twenty-Year Survey of Novae in M31 Shafter, A.W. et al. 2000, Novae in External Galaxies: M51, M87, and M101, ApJ 530, 193 van den Bergh, S., Pritchet, C.J. 1988, The Extragalactic Distance Scale, Proc. of the ASP 100th Anniversary Symposium, PASPC, Vol. 4 Warner, B. 1995, Cataclysmic Variable Stars, Cambridge Univ. Press další časopisecké články dle pokynů vedoucího |
Preliminary scope of work in English |
Novae possess a number of attributes that make them potentially valuable standard candles. They are luminous (approaching M_v = -10 mag)
and easy to recognize. Because they belong to an old stellar population, they are found predominantly in ellipticals and the bulges of spirals; such environments are relatively dust-free and photometrically smooth, so that observations of novae beyond the Local Group are simpler and easier to interpret than observations of Cepheids. The available evidence suggests that observations of novae are not strongly affected by metallicity effects. Finally, the calibration of novae as standard candles possesses relatively low intrinsic scatter and is well understood theoretically. |