THE TAIWAN-AMERICAN OCCULTATION SURVEY PROJECT STELLAR VARIABILITY. I. DETECTION OF LOW-AMPLITUDE delta SCUTI STARS

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50808

Title:	THE TAIWAN-AMERICAN OCCULTATION SURVEY PROJECT STELLAR VARIABILITY. I. DETECTION OF LOW-AMPLITUDE delta SCUTI STARS
Authors:	Kim,DW;Protopapas,P;Alcock,C;Byun,YI;Kyeong,J;Lee,BC;Wright,NJ;Axelrod,T;Bianco,FB;Chen,WP;Coehlo,NK;Cook,KH;Dave,R;King,SK;Lee,T;Lehner,MJ;Lin,HC;Marshall,SL;Porrata,R;Rice,JA;Schwamb,ME;Wang,JH;Wang,SY;Wen,CY;Zhang,ZW
Contributors:	天文研究所
Date:	2010
Issue Date:	2012-03-27 18:10:31 (UTC+8)
Publisher:	國立中央大學
Abstract:	We analyzed data accumulated during 2005 and 2006 by the Taiwan-American Occultation Survey (TAOS) in order to detect short-period variable stars (periods of less than or similar to 1 hr) such as delta Scuti. TAOS is designed for the detection of stellar occultation by small-size Kuiper Belt Objects and is operating four 50 cm telescopes at an effective cadence of 5 Hz. The four telescopes simultaneously monitor the same patch of the sky in order to reduce false positives. To detect short-period variables, we used the fast Fourier transform algorithm (FFT) in as much as the data points in TAOS light curves are evenly spaced. Using FFT, we found 41 short-period variables with amplitudes smaller than a few hundredths of a magnitude and periods of about an hour, which suggest that they are low-amplitude d Scuti stars. The light curves of TAOS d Scuti stars are accessible online at the Time Series Center Web site (http://timemachine.iic.harvard.edu).
Relation:	ASTRONOMICAL JOURNAL
Appears in Collections:	[Graduate Institute of Astronomy] journal & Dissertation

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