RAPID OSCILLATIONS IN THE SPECTRUM OF roAp STARS χ PSC AND γ EQU
Results of high time and spectral resolution spectral observations with CCD in 1998-1999 for Ap stars χ Psc and γ Equ were presented. Spectroscopic parameters (Vr, Wλ) of spectral lines SiII, CrI, CrII, FeI, FeII, Hα, Hβ shows that despite of different value of rotation velocity of χ Psc (180 km/s)...
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Odessa I. I. Mechnykov National University
2017-04-01
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| Series: | Odessa Astronomical Publications |
| Online Access: | http://oap.onu.edu.ua/article/view/99141 |
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doaj-c56979020c7c4c7b8efc235770fb0a6c2020-11-25T04:04:44ZengOdessa I. I. Mechnykov National UniversityOdessa Astronomical Publications1810-42152017-04-0114011011210.18524/1810-4215.2001.14.9914199141RAPID OSCILLATIONS IN THE SPECTRUM OF roAp STARS χ PSC AND γ EQUS. G. Aliev0N. Z. IsmailovShemakha astrophysical observatory NAS of AzerbaijanResults of high time and spectral resolution spectral observations with CCD in 1998-1999 for Ap stars χ Psc and γ Equ were presented. Spectroscopic parameters (Vr, Wλ) of spectral lines SiII, CrI, CrII, FeI, FeII, Hα, Hβ shows that despite of different value of rotation velocity of χ Psc (180 km/s) and γ Equ (∼74 years), both stars shows short-time oscillations of spectral parameters, and concern to a subgroup of roAp stars. It is showed that spectroscopic parameters and magnetic field strength variations may be described with short-time pulsation periods ∼17 min and ∼12 min for χ Psc and γ Equ correspondingly.http://oap.onu.edu.ua/article/view/99141 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
S. G. Aliev N. Z. Ismailov |
| spellingShingle |
S. G. Aliev N. Z. Ismailov RAPID OSCILLATIONS IN THE SPECTRUM OF roAp STARS χ PSC AND γ EQU Odessa Astronomical Publications |
| author_facet |
S. G. Aliev N. Z. Ismailov |
| author_sort |
S. G. Aliev |
| title |
RAPID OSCILLATIONS IN THE SPECTRUM OF roAp STARS χ PSC AND γ EQU |
| title_short |
RAPID OSCILLATIONS IN THE SPECTRUM OF roAp STARS χ PSC AND γ EQU |
| title_full |
RAPID OSCILLATIONS IN THE SPECTRUM OF roAp STARS χ PSC AND γ EQU |
| title_fullStr |
RAPID OSCILLATIONS IN THE SPECTRUM OF roAp STARS χ PSC AND γ EQU |
| title_full_unstemmed |
RAPID OSCILLATIONS IN THE SPECTRUM OF roAp STARS χ PSC AND γ EQU |
| title_sort |
rapid oscillations in the spectrum of roap stars χ psc and γ equ |
| publisher |
Odessa I. I. Mechnykov National University |
| series |
Odessa Astronomical Publications |
| issn |
1810-4215 |
| publishDate |
2017-04-01 |
| description |
Results of high time and spectral resolution spectral observations with CCD in 1998-1999 for Ap stars χ Psc and γ Equ were presented. Spectroscopic parameters (Vr, Wλ) of spectral lines SiII, CrI, CrII, FeI, FeII, Hα, Hβ shows that despite of different value of rotation velocity of χ Psc (180 km/s) and γ Equ (∼74 years), both stars shows short-time oscillations of spectral parameters, and concern to a subgroup of roAp stars. It is showed that spectroscopic parameters and magnetic field strength variations may be described with short-time pulsation periods ∼17 min and ∼12 min for χ Psc and γ Equ correspondingly. |
| url |
http://oap.onu.edu.ua/article/view/99141 |
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