Solar-like oscillations in distant stars as seen by CoRoT: The special case of HD 42618, a solar sister

C. Barban; S. Deheuvels; M. J. Goupil; Y. Lebreton; S. Mathur; E. Michel; Th Morel; J. Ballot; F. Baudin; K. Belkacem; O. Benomar; P. Boumier; G. R. Davies; R. A. García; M. P. Hall; B. Mosser; E. Poretti; C. Régulo; I. Roxburgh; R. Samadi; G. Verner

doi:10.1088/1742-6596/440/1/012030

Solar-like oscillations in distant stars as seen by CoRoT: The special case of HD 42618, a solar sister

C. Barban, S. Deheuvels, M. J. Goupil, Y. Lebreton, S. Mathur, E. Michel, Th Morel, J. Ballot, F. Baudin, K. Belkacem, O. Benomar, P. Boumier, G. R. Davies, R. A. García, M. P. Hall, B. Mosser, E. Poretti, C. Régulo, I. Roxburgh, R. SamadiG. Verner

Center for Space Science

Research output: Contribution to journal › Conference article › peer-review

Abstract

We report the observations of a main-sequence star, HD 42618 (T _eff 5765 K, G3V) by the space telescope CoRoT. This is the closest star to the Sun ever observed by CoRoT in term of its fundamental parameters. Using a preliminary version of CoRoT light curves of HD 42618, p modes are detected around 3.2 mHz associated to ℓ 0, 1 and 2 modes with a large spacing of 142 μHz. Various methods are then used to derive the mass and radius of this star (scaling relations from solar values as well as comparison between theoretical and observationnal frequencies) giving values in the range of (0.80 - 1.02)M_ȯ and (0.91 - 1.01)R_ȯ. A preliminary analysis of ℓ 0 and 1 modes allows us also to study the amount of penetrative convection at the base of the convective envelope.

Original language	English (US)
Article number	012030
Journal	Journal of Physics: Conference Series
Volume	440
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/440/1/012030
State	Published - 2013
Event	Eclipse on the Coral Sea: Cycle 24 Ascending - Palm Cove, QLD, Australia Duration: Nov 12 2012 → Nov 16 2012

ASJC Scopus subject areas

General Physics and Astronomy

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10.1088/1742-6596/440/1/012030

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Barban, C., Deheuvels, S., Goupil, M. J., Lebreton, Y., Mathur, S., Michel, E., Morel, T., Ballot, J., Baudin, F., Belkacem, K., Benomar, O., Boumier, P., Davies, G. R., García, R. A., Hall, M. P., Mosser, B., Poretti, E., Régulo, C., Roxburgh, I., ... Verner, G. (2013). Solar-like oscillations in distant stars as seen by CoRoT: The special case of HD 42618, a solar sister. Journal of Physics: Conference Series, 440(1), Article 012030. https://doi.org/10.1088/1742-6596/440/1/012030

Barban, C, Deheuvels, S, Goupil, MJ, Lebreton, Y, Mathur, S, Michel, E, Morel, T, Ballot, J, Baudin, F, Belkacem, K, Benomar, O, Boumier, P, Davies, GR, García, RA, Hall, MP, Mosser, B, Poretti, E, Régulo, C, Roxburgh, I, Samadi, R & Verner, G 2013, 'Solar-like oscillations in distant stars as seen by CoRoT: The special case of HD 42618, a solar sister', Journal of Physics: Conference Series, vol. 440, no. 1, 012030. https://doi.org/10.1088/1742-6596/440/1/012030

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title = "Solar-like oscillations in distant stars as seen by CoRoT: The special case of HD 42618, a solar sister",

abstract = "We report the observations of a main-sequence star, HD 42618 (T eff 5765 K, G3V) by the space telescope CoRoT. This is the closest star to the Sun ever observed by CoRoT in term of its fundamental parameters. Using a preliminary version of CoRoT light curves of HD 42618, p modes are detected around 3.2 mHz associated to ℓ 0, 1 and 2 modes with a large spacing of 142 μHz. Various methods are then used to derive the mass and radius of this star (scaling relations from solar values as well as comparison between theoretical and observationnal frequencies) giving values in the range of (0.80 - 1.02)Mȯ and (0.91 - 1.01)Rȯ. A preliminary analysis of ℓ 0 and 1 modes allows us also to study the amount of penetrative convection at the base of the convective envelope.",

author = "C. Barban and S. Deheuvels and Goupil, {M. J.} and Y. Lebreton and S. Mathur and E. Michel and Th Morel and J. Ballot and F. Baudin and K. Belkacem and O. Benomar and P. Boumier and Davies, {G. R.} and Garc{\'i}a, {R. A.} and Hall, {M. P.} and B. Mosser and E. Poretti and C. R{\'e}gulo and I. Roxburgh and R. Samadi and G. Verner",

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doi = "10.1088/1742-6596/440/1/012030",

language = "English (US)",

volume = "440",

journal = "Journal of Physics: Conference Series",

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note = "Eclipse on the Coral Sea: Cycle 24 Ascending ; Conference date: 12-11-2012 Through 16-11-2012",

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TY - JOUR

T1 - Solar-like oscillations in distant stars as seen by CoRoT

T2 - Eclipse on the Coral Sea: Cycle 24 Ascending

AU - Barban, C.

AU - Deheuvels, S.

AU - Goupil, M. J.

AU - Lebreton, Y.

AU - Mathur, S.

AU - Michel, E.

AU - Morel, Th

AU - Ballot, J.

AU - Baudin, F.

AU - Belkacem, K.

AU - Benomar, O.

AU - Boumier, P.

AU - Davies, G. R.

AU - García, R. A.

AU - Hall, M. P.

AU - Mosser, B.

AU - Poretti, E.

AU - Régulo, C.

AU - Roxburgh, I.

AU - Samadi, R.

AU - Verner, G.

PY - 2013

Y1 - 2013

N2 - We report the observations of a main-sequence star, HD 42618 (T eff 5765 K, G3V) by the space telescope CoRoT. This is the closest star to the Sun ever observed by CoRoT in term of its fundamental parameters. Using a preliminary version of CoRoT light curves of HD 42618, p modes are detected around 3.2 mHz associated to ℓ 0, 1 and 2 modes with a large spacing of 142 μHz. Various methods are then used to derive the mass and radius of this star (scaling relations from solar values as well as comparison between theoretical and observationnal frequencies) giving values in the range of (0.80 - 1.02)Mȯ and (0.91 - 1.01)Rȯ. A preliminary analysis of ℓ 0 and 1 modes allows us also to study the amount of penetrative convection at the base of the convective envelope.

AB - We report the observations of a main-sequence star, HD 42618 (T eff 5765 K, G3V) by the space telescope CoRoT. This is the closest star to the Sun ever observed by CoRoT in term of its fundamental parameters. Using a preliminary version of CoRoT light curves of HD 42618, p modes are detected around 3.2 mHz associated to ℓ 0, 1 and 2 modes with a large spacing of 142 μHz. Various methods are then used to derive the mass and radius of this star (scaling relations from solar values as well as comparison between theoretical and observationnal frequencies) giving values in the range of (0.80 - 1.02)Mȯ and (0.91 - 1.01)Rȯ. A preliminary analysis of ℓ 0 and 1 modes allows us also to study the amount of penetrative convection at the base of the convective envelope.

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U2 - 10.1088/1742-6596/440/1/012030

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JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

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Y2 - 12 November 2012 through 16 November 2012

ER -

Solar-like oscillations in distant stars as seen by CoRoT: The special case of HD 42618, a solar sister

Abstract

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