The taiwanese-american occultation survey project stellar variability. II. Detection of 15 variable stars

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

Research output: Contribution to journalArticle

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Abstract

The Taiwanese-American Occultation Survey (TAOS) project has collected more than a billion photometric measurements since 2005 January. These sky survey data - covering timescales from a fraction of a second to a few hundred days - are a useful source to study stellar variability. A total of 167 star fields, mostly along the ecliptic plane, have been selected for photometric monitoring with the TAOS telescopes. This paper presents our initial analysis of a search for periodic variable stars from the time-series TAOS data on one particular TAOS field, No.151 (R.A. = 17h30m67, decl. = 27°17′30″, J2000), which had been observed over 47 epochs in 2005. A total of 81 candidate variables are identified in the 3 deg2 field, with magnitudes in the range 8 < R < 16. On the basis of the periodicity and shape of the light curves, 29 variables, 15 of which were previously unknown, are classified as RR Lyrae, Cepheid, δ Scuti, SX Phonencis, semi-regular, and eclipsing binaries.

Original languageEnglish
Pages (from-to)2026-2033
Number of pages8
JournalAstronomical Journal
Volume139
Issue number5
DOIs
Publication statusPublished - 2010 Apr 22

Fingerprint

variable stars
occultation
ecliptic
star distribution
light curve
field survey
periodicity
periodic variations
coverings
time measurement
telescopes
time series
timescale
detection
project
monitoring

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Mondal, S., Lin, C. C., Chen, W. P., Zhang, Z. W., Alcock, C., Axelrod, T., ... Wen, C. Y. (2010). The taiwanese-american occultation survey project stellar variability. II. Detection of 15 variable stars. Astronomical Journal, 139(5), 2026-2033. https://doi.org/10.1088/0004-6256/139/5/2026
Mondal, S. ; Lin, C. C. ; Chen, W. P. ; Zhang, Z. W. ; Alcock, C. ; Axelrod, T. ; Bianco, F. B. ; Byun, Y. I. ; Coehlo, N. K. ; Cook, K. H. ; Dave, R. ; Kim, D. W. ; King, S. K. ; Lee, T. ; Lehner, M. J. ; Lin, H. C. ; Marshall, S. L. ; Protopapas, P. ; Rice, J. A. ; Schwamb, M. E. ; Wang, J. H. ; Wang, S. Y. ; Wen, C. Y. / The taiwanese-american occultation survey project stellar variability. II. Detection of 15 variable stars. In: Astronomical Journal. 2010 ; Vol. 139, No. 5. pp. 2026-2033.
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abstract = "The Taiwanese-American Occultation Survey (TAOS) project has collected more than a billion photometric measurements since 2005 January. These sky survey data - covering timescales from a fraction of a second to a few hundred days - are a useful source to study stellar variability. A total of 167 star fields, mostly along the ecliptic plane, have been selected for photometric monitoring with the TAOS telescopes. This paper presents our initial analysis of a search for periodic variable stars from the time-series TAOS data on one particular TAOS field, No.151 (R.A. = 17h30m67, decl. = 27°17′30″, J2000), which had been observed over 47 epochs in 2005. A total of 81 candidate variables are identified in the 3 deg2 field, with magnitudes in the range 8 < R < 16. On the basis of the periodicity and shape of the light curves, 29 variables, 15 of which were previously unknown, are classified as RR Lyrae, Cepheid, δ Scuti, SX Phonencis, semi-regular, and eclipsing binaries.",
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Mondal, S, Lin, CC, Chen, WP, Zhang, ZW, Alcock, C, Axelrod, T, Bianco, FB, Byun, YI, Coehlo, NK, Cook, KH, Dave, R, Kim, DW, King, SK, Lee, T, Lehner, MJ, Lin, HC, Marshall, SL, Protopapas, P, Rice, JA, Schwamb, ME, Wang, JH, Wang, SY & Wen, CY 2010, 'The taiwanese-american occultation survey project stellar variability. II. Detection of 15 variable stars', Astronomical Journal, vol. 139, no. 5, pp. 2026-2033. https://doi.org/10.1088/0004-6256/139/5/2026

The taiwanese-american occultation survey project stellar variability. II. Detection of 15 variable stars. / Mondal, S.; Lin, C. C.; Chen, W. P.; Zhang, Z. W.; Alcock, C.; Axelrod, T.; Bianco, F. B.; Byun, Y. I.; Coehlo, N. K.; Cook, K. H.; Dave, R.; Kim, D. W.; King, S. K.; Lee, T.; Lehner, M. J.; Lin, H. C.; Marshall, S. L.; Protopapas, P.; Rice, J. A.; Schwamb, M. E.; Wang, J. H.; Wang, S. Y.; Wen, C. Y.

In: Astronomical Journal, Vol. 139, No. 5, 22.04.2010, p. 2026-2033.

Research output: Contribution to journalArticle

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T1 - The taiwanese-american occultation survey project stellar variability. II. Detection of 15 variable stars

AU - Mondal, S.

AU - Lin, C. C.

AU - Chen, W. P.

AU - Zhang, Z. W.

AU - Alcock, C.

AU - Axelrod, T.

AU - Bianco, F. B.

AU - Byun, Y. I.

AU - Coehlo, N. K.

AU - Cook, K. H.

AU - Dave, R.

AU - Kim, D. W.

AU - King, S. K.

AU - Lee, T.

AU - Lehner, M. J.

AU - Lin, H. C.

AU - Marshall, S. L.

AU - Protopapas, P.

AU - Rice, J. A.

AU - Schwamb, M. E.

AU - Wang, J. H.

AU - Wang, S. Y.

AU - Wen, C. Y.

PY - 2010/4/22

Y1 - 2010/4/22

N2 - The Taiwanese-American Occultation Survey (TAOS) project has collected more than a billion photometric measurements since 2005 January. These sky survey data - covering timescales from a fraction of a second to a few hundred days - are a useful source to study stellar variability. A total of 167 star fields, mostly along the ecliptic plane, have been selected for photometric monitoring with the TAOS telescopes. This paper presents our initial analysis of a search for periodic variable stars from the time-series TAOS data on one particular TAOS field, No.151 (R.A. = 17h30m67, decl. = 27°17′30″, J2000), which had been observed over 47 epochs in 2005. A total of 81 candidate variables are identified in the 3 deg2 field, with magnitudes in the range 8 < R < 16. On the basis of the periodicity and shape of the light curves, 29 variables, 15 of which were previously unknown, are classified as RR Lyrae, Cepheid, δ Scuti, SX Phonencis, semi-regular, and eclipsing binaries.

AB - The Taiwanese-American Occultation Survey (TAOS) project has collected more than a billion photometric measurements since 2005 January. These sky survey data - covering timescales from a fraction of a second to a few hundred days - are a useful source to study stellar variability. A total of 167 star fields, mostly along the ecliptic plane, have been selected for photometric monitoring with the TAOS telescopes. This paper presents our initial analysis of a search for periodic variable stars from the time-series TAOS data on one particular TAOS field, No.151 (R.A. = 17h30m67, decl. = 27°17′30″, J2000), which had been observed over 47 epochs in 2005. A total of 81 candidate variables are identified in the 3 deg2 field, with magnitudes in the range 8 < R < 16. On the basis of the periodicity and shape of the light curves, 29 variables, 15 of which were previously unknown, are classified as RR Lyrae, Cepheid, δ Scuti, SX Phonencis, semi-regular, and eclipsing binaries.

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