Discovery of a new multiperiodic δ scuti variable star

A. Y. Zhou; D. An; J. R. Eggen; M. D. Reed; D. M. Terndrup; S. L. Harms

doi:10.1007/s10509-005-9034-3

Discovery of a new multiperiodic δ scuti variable star

A. Y. Zhou, D. An, J. R. Eggen, M. D. Reed, D. M. Terndrup, S. L. Harms

Department of Science Education

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2 Scopus citations

Abstract

We report on the discovery of a new short-periodic pulsating variable star in the field of the pulsating sdB star KPD 2109+4401. The star was observed on 10 consecutive nights. Based on the light curves, we detect three pulsation frequencies at 10.308, 4.023 and 11.075 cycle d^-1 with amplitudes of 11.1, 4.3 and 4.2 milli-magnitudes, respectively. Using the existing data from other sky surveys, we estimate a spectral type of late F and other atmospheric parameters. Then we discuss the observational properties of the star. Finally it is classified to be a new low-amplitude multiperiodic δ Scuti star. A future interest addressed is to accurately determine the star's spectral type and then to judge a possible link to γ Doradus-type pulsation.

Original language	English
Pages (from-to)	29-36
Number of pages	8
Journal	Astrophysics and Space Science
Volume	305
Issue number	1
DOIs	https://doi.org/10.1007/s10509-005-9034-3
State	Published - Sep 2006

Keywords

Stars: individual: GSC2.2 N033131287450
Stars: oscillations
Stars: variable: δ Scuti stars

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@article{e714da0c4a744ff88a58abffa0199ceb,

title = "Discovery of a new multiperiodic δ scuti variable star",

abstract = "We report on the discovery of a new short-periodic pulsating variable star in the field of the pulsating sdB star KPD 2109+4401. The star was observed on 10 consecutive nights. Based on the light curves, we detect three pulsation frequencies at 10.308, 4.023 and 11.075 cycle d-1 with amplitudes of 11.1, 4.3 and 4.2 milli-magnitudes, respectively. Using the existing data from other sky surveys, we estimate a spectral type of late F and other atmospheric parameters. Then we discuss the observational properties of the star. Finally it is classified to be a new low-amplitude multiperiodic δ Scuti star. A future interest addressed is to accurately determine the star's spectral type and then to judge a possible link to γ Doradus-type pulsation.",

keywords = "Stars: individual: GSC2.2 N033131287450, Stars: oscillations, Stars: variable: δ Scuti stars",

author = "Zhou, {A. Y.} and D. An and Eggen, {J. R.} and Reed, {M. D.} and Terndrup, {D. M.} and Harms, {S. L.}",

note = "Funding Information: Acknowledgements We would like to thank the MDM Observatory for generous time allocation. This work has been supported by National Science Foundation under Grant No. 0307480. AYZ was partly supported by the project No. 10273014. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.",

year = "2006",

month = sep,

doi = "10.1007/s10509-005-9034-3",

language = "English",

volume = "305",

pages = "29--36",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Springer Netherlands",

number = "1",

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TY - JOUR

T1 - Discovery of a new multiperiodic δ scuti variable star

AU - Zhou, A. Y.

AU - An, D.

AU - Eggen, J. R.

AU - Reed, M. D.

AU - Terndrup, D. M.

AU - Harms, S. L.

N1 - Funding Information: Acknowledgements We would like to thank the MDM Observatory for generous time allocation. This work has been supported by National Science Foundation under Grant No. 0307480. AYZ was partly supported by the project No. 10273014. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.

PY - 2006/9

Y1 - 2006/9

N2 - We report on the discovery of a new short-periodic pulsating variable star in the field of the pulsating sdB star KPD 2109+4401. The star was observed on 10 consecutive nights. Based on the light curves, we detect three pulsation frequencies at 10.308, 4.023 and 11.075 cycle d-1 with amplitudes of 11.1, 4.3 and 4.2 milli-magnitudes, respectively. Using the existing data from other sky surveys, we estimate a spectral type of late F and other atmospheric parameters. Then we discuss the observational properties of the star. Finally it is classified to be a new low-amplitude multiperiodic δ Scuti star. A future interest addressed is to accurately determine the star's spectral type and then to judge a possible link to γ Doradus-type pulsation.

AB - We report on the discovery of a new short-periodic pulsating variable star in the field of the pulsating sdB star KPD 2109+4401. The star was observed on 10 consecutive nights. Based on the light curves, we detect three pulsation frequencies at 10.308, 4.023 and 11.075 cycle d-1 with amplitudes of 11.1, 4.3 and 4.2 milli-magnitudes, respectively. Using the existing data from other sky surveys, we estimate a spectral type of late F and other atmospheric parameters. Then we discuss the observational properties of the star. Finally it is classified to be a new low-amplitude multiperiodic δ Scuti star. A future interest addressed is to accurately determine the star's spectral type and then to judge a possible link to γ Doradus-type pulsation.

KW - Stars: individual: GSC2.2 N033131287450

KW - Stars: oscillations

KW - Stars: variable: δ Scuti stars

UR - http://www.scopus.com/inward/record.url?scp=33751107694&partnerID=8YFLogxK

U2 - 10.1007/s10509-005-9034-3

DO - 10.1007/s10509-005-9034-3

M3 - Article

AN - SCOPUS:33751107694

SN - 0004-640X

VL - 305

SP - 29

EP - 36

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

IS - 1

ER -

Discovery of a new multiperiodic δ scuti variable star

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Keywords

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