2019
Towards Comprehension of the Variability of the mCP Star CU Virginis
MIKULÁŠEK, Zdeněk, Jiří KRTIČKA, Gregor HENRY, Jan JANÍK, Andrzej PIGULSKI et. al.Základní údaje
Originální název
Towards Comprehension of the Variability of the mCP Star CU Virginis
Autoři
MIKULÁŠEK, Zdeněk (203 Česká republika, garant, domácí), Jiří KRTIČKA (203 Česká republika, domácí), Gregor HENRY (840 Spojené státy), Jan JANÍK (203 Česká republika, domácí) a Andrzej PIGULSKI (616 Polsko)
Vydání
518. vyd. SAN FRANCISCO, Astronomical Society of the Pacific Conference Series, od s. 125-130, 6 s. 2019
Nakladatel
ASTRONOMICAL SOC PACIFIC
Další údaje
Jazyk
angličtina
Typ výsledku
Stať ve sborníku
Obor
10308 Astronomy
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Forma vydání
tištěná verze "print"
Kód RIV
RIV/00216224:14310/19:00107583
Organizační jednotka
Přírodovědecká fakulta
ISBN
978-1-58381-924-1
ISSN
UT WoS
000476582000020
Klíčová slova anglicky
magnetic chemically peculiar stars; CU Virginis
Štítky
Příznaky
Mezinárodní význam
Změněno: 24. 3. 2020 11:56, Mgr. Marie Šípková, DiS.
V originále
The magnetic chemically peculiar (mCP) star CU Virginis is the most enigmatic star among upper main sequence stars. It is an unusually fast rotator showing strictly periodic light variations in all regions of the electromagnetic spectrum, as well as spectroscopic and spectropolarimetric changes. At the same time, it is also the first main-sequence radio pulsar. Exploiting information hidden in phase variations, we monitored the secular oscillation of the rotational period during the last 53 years. Applying our own phenomenological approach, we analyzed 37 975 individual photometric and spectroscopic measurements from 72 data sources and improved the O-C model. All the relevant observations indicate that the secular period variations can be well approximated by a 5th degree polynomial. The outer surface, "fastened" by the global magnetic field, seems to be stable for decades as shown by the constancy of the mutual location of different phase tracers on the stellar surface.
Česky
The magnetic chemically peculiar (mCP) star CU Virginis is the most enigmatic star among upper main sequence stars. It is an unusually fast rotator showing strictly periodic light variations in all regions of the electromagnetic spectrum, as well as spectroscopic and spectropolarimetric changes. At the same time, it is also the first main-sequence radio pulsar. Exploiting information hidden in phase variations, we monitored the secular oscillation of the rotational period during the last 53 years. Applying our own phenomenological approach, we analyzed 37 975 individual photometric and spectroscopic measurements from 72 data sources and improved the O-C model. All the relevant observations indicate that the secular period variations can be well approximated by a 5th degree polynomial. The outer surface, "fastened" by the global magnetic field, seems to be stable for decades as shown by the constancy of the mutual location of different phase tracers on the stellar surface.
Návaznosti
| GA16-01116S, projekt VaV |
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