Towards Comprehension of the Variability of the mCP Star CU Virginis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00107583" target="_blank" >RIV/00216224:14310/19:00107583 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Towards Comprehension of the Variability of the mCP Star CU Virginis
Original language description
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.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
<a href="/en/project/GA16-01116S" target="_blank" >GA16-01116S: Atmospheres and circumstellar environment of magnetic hot stars</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Astronomical Society of the Pacific Conference Series
ISBN
9781583819241
ISSN
1050-3390
e-ISSN
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Number of pages
6
Pages from-to
125-130
Publisher name
ASTRONOMICAL SOC PACIFIC
Place of publication
SAN FRANCISCO
Event location
Special Astrophys Observ, Nizhny Arkhyz, RUSSIA
Event date
Oct 1, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000476582000020