Lambda Bootis stars in the SuperWASP survey

J 2015

Lambda Bootis stars in the SuperWASP survey

PAUNZEN, Ernst; Marek SKARKA; Przemyslaw WALCZAK; Daniel L. HOLDSWORTH; Barry SMALLEY et al.

Základní údaje

Originální název

Lambda Bootis stars in the SuperWASP survey

Název česky

Lambda Bootis hvězdy v prohlídce SuperWASP

Autoři

PAUNZEN, Ernst; Marek SKARKA; Przemyslaw WALCZAK; Daniel L. HOLDSWORTH; Barry SMALLEY; Richard G. WEST a Jan JANÍK

Vydání

Monthly Notices of the Royal Astronomical Society, Priestley and Weale, 2015, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 4.952

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/15:00083981

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

techniques: photometric; stars: chemically peculiar; stars: variables: delta Scuti

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 4. 4. 2019 11:03, RNDr. Jan Janík, Ph.D.

Anotace

V originále

We have analysed around 170 000 individual photometric WASP (Wide Angle Search for Planets) measurements of 15 well-established lambda Bootis stars to search for variability. The lambda Bootis stars are a small group of late-B to early-F, Pop I, stars that show moderate to extreme (surface) underabundances (up to a factor 100) of most Fe-peak elements, but solar abundances of lighter elements (C, N, O and S). They are excellent laboratories for the study of fundamental astrophysical processes such as diffusion, meridional circulation, stellar winds and accretion in the presence of pulsation. From the 15 targets, 8 are variable and 7 are apparently constant with upper limits between 0.8 and 3.0 mmag. We present a detailed time-series analysis and a comparison with previously published results. From an asteroseismologic study, we conclude that the found chemical peculiarities are most probably restricted to the surface.

Citovat

PAUNZEN, Ernst; Marek SKARKA; Przemyslaw WALCZAK; Daniel L. HOLDSWORTH; Barry SMALLEY; Richard G. WEST a Jan JANÍK. Lambda Bootis stars in the SuperWASP survey. Monthly Notices of the Royal Astronomical Society. Priestley and Weale, 2015, roč. 453, č. 2, s. 1241-1248. ISSN 0035-8711. Dostupné z: https://doi.org/10.1093/mnras/stv1652.

@article{1312119,
   author = {Paunzen, Ernst and Skarka, Marek and Walczak, Przemyslaw and Holdsworth, Daniel L. and Smalley, Barry and West, Richard G. and Janík, Jan},
   article_number = {2},
   doi = {https://doi.org/10.1093/mnras/stv1652},
   keywords = {techniques: photometric; stars: chemically peculiar; stars: variables: delta Scuti},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Lambda Bootis stars in the SuperWASP survey},
   volume = {453},
   year = {2015}
}

TY  - JOUR
ID  - 1312119
AU  - Paunzen, Ernst - Skarka, Marek - Walczak, Przemyslaw - Holdsworth, Daniel L. - Smalley, Barry - West, Richard G. - Janík, Jan
PY  - 2015
TI  - Lambda Bootis stars in the SuperWASP survey
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 453
IS  - 2
SP  - 1241-1248
EP  - 1241-1248
PB  - Priestley and Weale
SN  - 00358711
KW  - techniques: photometric
KW  - stars: chemically peculiar
KW  - stars: variables: delta Scuti
N2  - We have analysed around 170 000 individual photometric WASP (Wide Angle Search for Planets) measurements of 15 well-established lambda Bootis stars to search for variability. The lambda Bootis stars are a small group of late-B to early-F, Pop I, stars that show moderate to extreme (surface) underabundances (up to a factor 100) of most Fe-peak elements, but solar abundances of lighter elements (C, N, O and S). They are excellent laboratories for the study of fundamental astrophysical processes such as diffusion, meridional circulation, stellar winds and accretion in the presence of pulsation. From the 15 targets, 8 are variable and 7 are apparently constant with upper limits between 0.8 and 3.0 mmag. We present a detailed time-series analysis and a comparison with previously published results. From an asteroseismologic study, we conclude that the found chemical peculiarities are most probably restricted to the surface.
ER  -

PAUNZEN, Ernst; Marek SKARKA; Przemyslaw WALCZAK; Daniel L. HOLDSWORTH; Barry SMALLEY; Richard G. WEST a Jan JANÍK. Lambda Bootis stars in the SuperWASP survey. \textit{Monthly Notices of the Royal Astronomical Society}. Priestley and Weale, 2015, roč.~453, č.~2, s.~1241-1248. ISSN~0035-8711. Dostupné z: https://doi.org/10.1093/mnras/stv1652.

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