The Taiwan-American occultation survey project stellar variability. I: Detection of low-amplitude δ Scuti stars

D. -W. Kim; P. Protopapas; C. Alcock; N.J. Wright; F.B. Bianco; M.J. Lehner; R. Dave; Y.-I. Byun; J. Kyeong; B.-C. Lee; T. Axelrod; W.-P. Chen; H.-C. Lin; J.-H. Wang; Z.-W. Zhang; N.K. Coehlo; J.A. Rice; K.H. Cook; S.L. Marshall; S.-K. King; T. Lee; S.-Y. Wang; C.-Y. Wen; R. Porrata; M.E. Schwamb

doi:10.1088/0004-6256/139/2/757

The Taiwan-American occultation survey project stellar variability. I: Detection of low-amplitude δ Scuti stars

D. -W. Kim, P. Protopapas, C. Alcock, N.J. Wright, F.B. Bianco, M.J. Lehner, R. Dave, Y.-I. Byun, J. Kyeong, B.-C. Lee, T. Axelrod, W.-P. Chen, H.-C. Lin, J.-H. Wang, Z.-W. Zhang, N.K. Coehlo, J.A. Rice, K.H. Cook, S.L. Marshall, S.-K. KingT. Lee, S.-Y. Wang, C.-Y. Wen, R. Porrata, M.E. Schwamb

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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 ≲1 hr) such as δ 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 δ Scuti stars. The light curves of TAOS δ Scuti stars are accessible online at the Time Series Center Web site (http://timemachine.iic.harvard.edu).

Original language	English
Pages (from-to)	757-764
Number of pages	8
Journal	The Astronomical Journal
Volume	139
Issue number	2
DOIs	https://doi.org/10.1088/0004-6256/139/2/757
Publication status	Published - 1 Jan 2010

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Kim, D. .-W., Protopapas, P., Alcock, C., Wright, N. J., Bianco, F. B., Lehner, M. J., Dave, R., Byun, Y.-I., Kyeong, J., Lee, B.-C., Axelrod, T., Chen, W.-P., Lin, H.-C., Wang, J.-H., Zhang, Z.-W., Coehlo, N. K., Rice, J. A., Cook, K. H., Marshall, S. L., ... Schwamb, M. E. (2010). The Taiwan-American occultation survey project stellar variability. I: Detection of low-amplitude δ Scuti stars. The Astronomical Journal, 139(2), 757-764. https://doi.org/10.1088/0004-6256/139/2/757

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title = "The Taiwan-American occultation survey project stellar variability. I: Detection of low-amplitude δ Scuti stars",

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 ≲1 hr) such as δ 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 δ Scuti stars. The light curves of TAOS δ Scuti stars are accessible online at the Time Series Center Web site (http://timemachine.iic.harvard.edu).",

author = "Kim, {D. -W.} and P. Protopapas and C. Alcock and N.J. Wright and F.B. Bianco and M.J. Lehner and R. Dave and Y.-I. Byun and J. Kyeong and B.-C. Lee and T. Axelrod and W.-P. Chen and H.-C. Lin and J.-H. Wang and Z.-W. Zhang and N.K. Coehlo and J.A. Rice and K.H. Cook and S.L. Marshall and S.-K. King and T. Lee and S.-Y. Wang and C.-Y. Wen and R. Porrata and M.E. Schwamb",

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doi = "10.1088/0004-6256/139/2/757",

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Kim, D-W, Protopapas, P, Alcock, C, Wright, NJ, Bianco, FB, Lehner, MJ, Dave, R, Byun, Y-I, Kyeong, J, Lee, B-C, Axelrod, T, Chen, W-P, Lin, H-C, Wang, J-H, Zhang, Z-W, Coehlo, NK, Rice, JA, Cook, KH, Marshall, SL, King, S-K, Lee, T, Wang, S-Y, Wen, C-Y, Porrata, R & Schwamb, ME 2010, 'The Taiwan-American occultation survey project stellar variability. I: Detection of low-amplitude δ Scuti stars', The Astronomical Journal, vol. 139, no. 2, pp. 757-764. https://doi.org/10.1088/0004-6256/139/2/757

TY - JOUR

T1 - The Taiwan-American occultation survey project stellar variability. I

T2 - Detection of low-amplitude δ Scuti stars

AU - Kim, D. -W.

AU - Protopapas, P.

AU - Alcock, C.

AU - Wright, N.J.

AU - Bianco, F.B.

AU - Lehner, M.J.

AU - Dave, R.

AU - Byun, Y.-I.

AU - Kyeong, J.

AU - Lee, B.-C.

AU - Axelrod, T.

AU - Chen, W.-P.

AU - Lin, H.-C.

AU - Wang, J.-H.

AU - Zhang, Z.-W.

AU - Coehlo, N.K.

AU - Rice, J.A.

AU - Cook, K.H.

AU - Marshall, S.L.

AU - King, S.-K.

AU - Lee, T.

AU - Wang, S.-Y.

AU - Wen, C.-Y.

AU - Porrata, R.

AU - Schwamb, M.E.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - 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 ≲1 hr) such as δ 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 δ Scuti stars. The light curves of TAOS δ Scuti stars are accessible online at the Time Series Center Web site (http://timemachine.iic.harvard.edu).

AB - 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 ≲1 hr) such as δ 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 δ Scuti stars. The light curves of TAOS δ Scuti stars are accessible online at the Time Series Center Web site (http://timemachine.iic.harvard.edu).

UR - http://www.scopus.com/inward/record.url?scp=74849091100&partnerID=8YFLogxK

U2 - 10.1088/0004-6256/139/2/757

DO - 10.1088/0004-6256/139/2/757

M3 - Article

AN - SCOPUS:74849091100

SN - 0004-6256

VL - 139

SP - 757

EP - 764

JO - The Astronomical Journal

JF - The Astronomical Journal

IS - 2

ER -

The Taiwan-American occultation survey project stellar variability. I: Detection of low-amplitude δ Scuti stars

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