Solar-like oscillations in KIC 11395018 and KIC 11234888 from 8 months of Kepler data

S. Mathur; R. Handberg; T. L. Campante; R. A. García; T. Appourchaux; T. R. Bedding; B. Mosser; W. J. Chaplin; J. Ballot; O. Benomar; A. Bonanno; E. Corsaro; P. Gaulme; S. Hekker; C. Régulo; D. Salabert; G. Verner; T. R. White; I. M. Brandão; O. L. Creevey; G. Doǧan; Y. Elsworth; D. Huber; S. J. Hale; G. Houdek; C. Karoff; T. S. Metcalfe; J. Molenda-Zakowicz; M. J.P.F.G. Monteiro; M. J. Thompson; J. Christensen-Dalsgaard; R. L. Gilliland; S. D. Kawaler; H. Kjeldsen; E. V. Quintana; D. T. Sanderfer; S. E. Seader

doi:10.1088/0004-637X/733/2/95

Solar-like oscillations in KIC 11395018 and KIC 11234888 from 8 months of Kepler data

S. Mathur, R. Handberg, T. L. Campante, R. A. García, T. Appourchaux, T. R. Bedding, B. Mosser, W. J. Chaplin, J. Ballot, O. Benomar, A. Bonanno, E. Corsaro, P. Gaulme, S. Hekker, C. Régulo, D. Salabert, G. Verner, T. R. White, I. M. Brandão, O. L. CreeveyG. Doǧan, Y. Elsworth, D. Huber, S. J. Hale, G. Houdek, C. Karoff, T. S. Metcalfe, J. Molenda-Zakowicz, M. J.P.F.G. Monteiro, M. J. Thompson, J. Christensen-Dalsgaard, R. L. Gilliland, S. D. Kawaler, H. Kjeldsen, E. V. Quintana, D. T. Sanderfer, S. E. Seader

Astronomy & Astrophysics

Research output: Contribution to journal › Article › peer-review

58 Scopus citations

Abstract

We analyze the photometric short-cadence data obtained with the Kepler mission during the first 8 months of observations of two solar-type stars of spectral types G and F: KIC 11395018 and KIC 11234888, respectively, the latter having a lower signal-to-noise ratio (S/N) compared with the former. We estimate global parameters of the acoustic (p) modes such as the average large and small frequency separations, the frequency of the maximum of the p-mode envelope, and the average line width of the acoustic modes. We were able to identify and to measure 22 p-mode frequencies for the first star and 16 for the second one even though the S/N of these stars are rather low. We also derive some information about the stellar rotation periods from the analyses of the low-frequency parts of the power spectral densities. A model-independent estimation of the mean density, mass, and radius is obtained using the scaling laws. We emphasize the importance of continued observations for the stars with low S/N for an improved characterization of the oscillation modes. Our results offer a preview of what will be possible for many stars with the long data sets obtained during the remainder of the mission.

Original language	English (US)
Article number	95
Journal	Astrophysical Journal
Volume	733
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/733/2/95
State	Published - Jun 1 2011

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1088/0004-637X/733/2/95

Cite this

Mathur, S., Handberg, R., Campante, T. L., García, R. A., Appourchaux, T., Bedding, T. R., Mosser, B., Chaplin, W. J., Ballot, J., Benomar, O., Bonanno, A., Corsaro, E., Gaulme, P., Hekker, S., Régulo, C., Salabert, D., Verner, G., White, T. R., Brandão, I. M., ... Seader, S. E. (2011). Solar-like oscillations in KIC 11395018 and KIC 11234888 from 8 months of Kepler data. Astrophysical Journal, 733(2), Article 95. https://doi.org/10.1088/0004-637X/733/2/95

@article{8c674d150af74f7f9033ed360a3098b9,

title = "Solar-like oscillations in KIC 11395018 and KIC 11234888 from 8 months of Kepler data",

abstract = "We analyze the photometric short-cadence data obtained with the Kepler mission during the first 8 months of observations of two solar-type stars of spectral types G and F: KIC 11395018 and KIC 11234888, respectively, the latter having a lower signal-to-noise ratio (S/N) compared with the former. We estimate global parameters of the acoustic (p) modes such as the average large and small frequency separations, the frequency of the maximum of the p-mode envelope, and the average line width of the acoustic modes. We were able to identify and to measure 22 p-mode frequencies for the first star and 16 for the second one even though the S/N of these stars are rather low. We also derive some information about the stellar rotation periods from the analyses of the low-frequency parts of the power spectral densities. A model-independent estimation of the mean density, mass, and radius is obtained using the scaling laws. We emphasize the importance of continued observations for the stars with low S/N for an improved characterization of the oscillation modes. Our results offer a preview of what will be possible for many stars with the long data sets obtained during the remainder of the mission.",

author = "S. Mathur and R. Handberg and Campante, {T. L.} and Garc{\'i}a, {R. A.} and T. Appourchaux and Bedding, {T. R.} and B. Mosser and Chaplin, {W. J.} and J. Ballot and O. Benomar and A. Bonanno and E. Corsaro and P. Gaulme and S. Hekker and C. R{\'e}gulo and D. Salabert and G. Verner and White, {T. R.} and Brand{\~a}o, {I. M.} and Creevey, {O. L.} and G. Doǧan and Y. Elsworth and D. Huber and Hale, {S. J.} and G. Houdek and C. Karoff and Metcalfe, {T. S.} and J. Molenda-Zakowicz and Monteiro, {M. J.P.F.G.} and Thompson, {M. J.} and J. Christensen-Dalsgaard and Gilliland, {R. L.} and Kawaler, {S. D.} and H. Kjeldsen and Quintana, {E. V.} and Sanderfer, {D. T.} and Seader, {S. E.}",

note = "Funding Information: The financial support of Fellowship from Universiti Sains Malaysia for Mr. Ng Kai Foon and Dr. Tan Thuan Chew was gratefully acknowledged. We gratefully acknowledge and are indebted to the anonymous referees for comments and constructive suggestions provided for improving the manuscript.",

year = "2011",

month = jun,

day = "1",

doi = "10.1088/0004-637X/733/2/95",

language = "English (US)",

volume = "733",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Mathur, S, Handberg, R, Campante, TL, García, RA, Appourchaux, T, Bedding, TR, Mosser, B, Chaplin, WJ, Ballot, J, Benomar, O, Bonanno, A, Corsaro, E, Gaulme, P, Hekker, S, Régulo, C, Salabert, D, Verner, G, White, TR, Brandão, IM, Creevey, OL, Doǧan, G, Elsworth, Y, Huber, D, Hale, SJ, Houdek, G, Karoff, C, Metcalfe, TS, Molenda-Zakowicz, J, Monteiro, MJPFG, Thompson, MJ, Christensen-Dalsgaard, J, Gilliland, RL, Kawaler, SD, Kjeldsen, H, Quintana, EV, Sanderfer, DT & Seader, SE 2011, 'Solar-like oscillations in KIC 11395018 and KIC 11234888 from 8 months of Kepler data', Astrophysical Journal, vol. 733, no. 2, 95. https://doi.org/10.1088/0004-637X/733/2/95

TY - JOUR

T1 - Solar-like oscillations in KIC 11395018 and KIC 11234888 from 8 months of Kepler data

AU - Mathur, S.

AU - Handberg, R.

AU - Campante, T. L.

AU - García, R. A.

AU - Appourchaux, T.

AU - Bedding, T. R.

AU - Mosser, B.

AU - Chaplin, W. J.

AU - Ballot, J.

AU - Benomar, O.

AU - Bonanno, A.

AU - Corsaro, E.

AU - Gaulme, P.

AU - Hekker, S.

AU - Régulo, C.

AU - Salabert, D.

AU - Verner, G.

AU - White, T. R.

AU - Brandão, I. M.

AU - Creevey, O. L.

AU - Doǧan, G.

AU - Elsworth, Y.

AU - Huber, D.

AU - Hale, S. J.

AU - Houdek, G.

AU - Karoff, C.

AU - Metcalfe, T. S.

AU - Molenda-Zakowicz, J.

AU - Monteiro, M. J.P.F.G.

AU - Thompson, M. J.

AU - Christensen-Dalsgaard, J.

AU - Gilliland, R. L.

AU - Kawaler, S. D.

AU - Kjeldsen, H.

AU - Quintana, E. V.

AU - Sanderfer, D. T.

AU - Seader, S. E.

N1 - Funding Information: The financial support of Fellowship from Universiti Sains Malaysia for Mr. Ng Kai Foon and Dr. Tan Thuan Chew was gratefully acknowledged. We gratefully acknowledge and are indebted to the anonymous referees for comments and constructive suggestions provided for improving the manuscript.

PY - 2011/6/1

Y1 - 2011/6/1

N2 - We analyze the photometric short-cadence data obtained with the Kepler mission during the first 8 months of observations of two solar-type stars of spectral types G and F: KIC 11395018 and KIC 11234888, respectively, the latter having a lower signal-to-noise ratio (S/N) compared with the former. We estimate global parameters of the acoustic (p) modes such as the average large and small frequency separations, the frequency of the maximum of the p-mode envelope, and the average line width of the acoustic modes. We were able to identify and to measure 22 p-mode frequencies for the first star and 16 for the second one even though the S/N of these stars are rather low. We also derive some information about the stellar rotation periods from the analyses of the low-frequency parts of the power spectral densities. A model-independent estimation of the mean density, mass, and radius is obtained using the scaling laws. We emphasize the importance of continued observations for the stars with low S/N for an improved characterization of the oscillation modes. Our results offer a preview of what will be possible for many stars with the long data sets obtained during the remainder of the mission.

AB - We analyze the photometric short-cadence data obtained with the Kepler mission during the first 8 months of observations of two solar-type stars of spectral types G and F: KIC 11395018 and KIC 11234888, respectively, the latter having a lower signal-to-noise ratio (S/N) compared with the former. We estimate global parameters of the acoustic (p) modes such as the average large and small frequency separations, the frequency of the maximum of the p-mode envelope, and the average line width of the acoustic modes. We were able to identify and to measure 22 p-mode frequencies for the first star and 16 for the second one even though the S/N of these stars are rather low. We also derive some information about the stellar rotation periods from the analyses of the low-frequency parts of the power spectral densities. A model-independent estimation of the mean density, mass, and radius is obtained using the scaling laws. We emphasize the importance of continued observations for the stars with low S/N for an improved characterization of the oscillation modes. Our results offer a preview of what will be possible for many stars with the long data sets obtained during the remainder of the mission.

UR - http://www.scopus.com/inward/record.url?scp=79956373998&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79956373998&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/733/2/95

DO - 10.1088/0004-637X/733/2/95

M3 - Article

AN - SCOPUS:79956373998

SN - 0004-637X

VL - 733

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 95

ER -

Solar-like oscillations in KIC 11395018 and KIC 11234888 from 8 months of Kepler data

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this