Stephi: A New Approach to δ Scuti Asteroseismology
نویسندگان
چکیده
منابع مشابه
Photometry and asteroseismology of δ Scuti stars in Praesepe
We discuss observations and seismic analyses for three multi-periodic δ Scuti stars in the Praesepe cluster: BU, BN and BV Cnc. For two stars (BU and BN Cnc) we re-analyse published photoelectric photometry and show that using statistical weights results in a dramatic reduction in the noise level. We detect seven frequencies in BU Cnc and eight in BN Cnc, with three of the latter being previous...
متن کاملAsteroseismology of δ Scuti stars in open clusters: Praesepe
The present paper provides a general overview of the asteroseismic potential of δ Scuti stars in clusters, in particular focusing on convection diagnostics. We give a summarise of the last results obtained by the authors for the Praesepe cluster of which five δ Scuti stars are analysed. In that work, linear analysis is confronted with observations, using refined descriptions for the effects of ...
متن کاملMulti - Site Observations of Δ Scuti Stars 7 Aql and 8 Aql ( a New Δ Scuti Variable ) : the Twelfth Stephi Campaign in 2003
We present an analysis of the pulsation behaviour of the δ Scuti stars 7 Aql (HD 174532) and 8 Aql (HD 174589) – a new variable star – observed in the framework of STEPHI XII campaign during 2003 June–July. 183 hours of high precision photometry were acquired by using four-channel photometers at three sites on three continents during 21 days. The light curves and amplitude spectra were obtained...
متن کاملAsteroseismology from space : the δ Scuti star θ 2 Tauri monitored by the WIRE satellite
The bright variable star θ 2 Tau was monitored with the star camera on the Wide–Field Infrared Explorer satellite. Twelve independent frequencies were detected down to the 0.5 mmag amplitude level. Their reality was investigated by searching for them using two different algorithms and by some internal checks: both procedures strengthened our confidence in the results. All the frequencies are in...
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هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1993
ISSN: 0252-9211
DOI: 10.1017/s0252921100018765