| Autor: | S. G. Sergeev, K. K. Chuvaev, V. I. Pronik, Yu. F. Malkov, V. T. Doroshenko |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Physics
medicine.diagnostic_test Astrophysics::High Energy Astrophysical Phenomena Astronomy Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Galaxy Cosmology Space and Planetary Science Spectrophotometry medicine Spectral energy distribution Emission spectrum Astrophysics::Galaxy Astrophysics |
| Zdroj: | Astrophysics and Space Science. 252:85-94 |
| ISSN: | 0004-640X |
| Popis: | In the time period from 1972-1993, the Seyfert 1 galaxy Mrk 509 showed large variations of its optical continuum and broad emission line fluxes. The broad Hα and Hγ emission lines have approximately the same profiles, which retain their shape during flux variations. The relationship between the continuum and emission line fluxes varies with time. The spectral energy distribution of the variable continuum based on UBVRI data has the form lgF(ν) ≈ αlgν, with the dereddened α = -0.60. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink