MURPHY, Simon and Ernst PAUNZEN. Gaia's view of the lambda Boo star puzzle. Monthly Notices of the Royal Astronomical Society. Oxford: OXFORD UNIV PRESS, vol. 466, No 1, p. 546-555. ISSN 0035-8711. doi:10.1093/mnras/stw3141. 2017.
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Basic information
Original name Gaia's view of the lambda Boo star puzzle
Authors MURPHY, Simon (36 Australia) and Ernst PAUNZEN (40 Austria, guarantor, belonging to the institution).
Edition Monthly Notices of the Royal Astronomical Society, Oxford, OXFORD UNIV PRESS, 2017, 0035-8711.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 5.194
RIV identification code RIV/00216224:14310/17:00099897
Organization unit Faculty of Science
Doi http://dx.doi.org/10.1093/mnras/stw3141
UT WoS 000398112400037
Keywords in English accretion; accretion discs; asteroseismology; stars: chemically peculiar; circumstellar matter; stars: distances; ISM: clouds
Tags NZ
Tags International impact, Reviewed
Changed by Changed by: doc. Ernst Paunzen, Dr.rer.nat, učo 114060. Changed: 13/11/2018 11:14.
Abstract
The evolutionary status of the chemically peculiar class of. Boo stars has been intensely debated. It is now agreed that the. Boo phenomenon affects A stars of all ages, from star formation to the terminal age main sequence, but the cause of the chemical peculiarity is still a puzzle. We revisit the debate of their ages and temperatures in order to shed light on the phenomenon, using the new parallaxes in Gaia Data Release 1 with existing Hipparcos parallaxes and multicolour photometry. We find that no single formation mechanism is able to explain all the observations, and suggest that there are multiple channels producing lambda Boo spectra. The relative importance of these channels varies with age, temperature and environment.
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7AMB17AT030, research and development projectName: Analýza hvězd se skvrnami pomocí kvalitních pozorovacích dat
Investor: Ministry of Education, Youth and Sports of the CR
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