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, Othman Benomar, P. Boumier, G. R. Davies, R. A. García, M. P. Hall, B. Mosser, E. Poretti, C. Régulo, I. Roxburgh, R. SamadiG. Verner

Research output: Contribution to journalConference article

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.

Original languageEnglish (US)
Article number012030
JournalJournal of Physics: Conference Series
Volume440
Issue number1
DOIs
StatePublished - Jan 1 2013
EventEclipse on the Coral Sea: Cycle 24 Ascending - Palm Cove, QLD, Australia
Duration: Nov 12 2012Nov 16 2012

Fingerprint

solar oscillations
stars
main sequence stars
light curve
sun
convection
envelopes
spacing
telescopes
scaling
radii

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Barban, C., Deheuvels, S., Goupil, M. J., Lebreton, Y., Mathur, S., Michel, E., ... 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), [012030]. https://doi.org/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. / Barban, C.; Deheuvels, S.; Goupil, M. J.; Lebreton, Y.; Mathur, S.; Michel, E.; Morel, Th; Ballot, J.; Baudin, F.; Belkacem, K.; Benomar, Othman; Boumier, P.; Davies, G. R.; García, R. A.; Hall, M. P.; Mosser, B.; Poretti, E.; Régulo, C.; Roxburgh, I.; Samadi, R.; Verner, G.

In: Journal of Physics: Conference Series, Vol. 440, No. 1, 012030, 01.01.2013.

Research output: Contribution to journalConference article

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
Barban, C. ; Deheuvels, S. ; Goupil, M. J. ; Lebreton, Y. ; Mathur, S. ; Michel, E. ; Morel, Th ; Ballot, J. ; Baudin, F. ; Belkacem, K. ; Benomar, Othman ; Boumier, P. ; Davies, G. R. ; García, R. A. ; Hall, M. P. ; Mosser, B. ; Poretti, E. ; Régulo, C. ; Roxburgh, I. ; Samadi, R. ; Verner, G. / Solar-like oscillations in distant stars as seen by CoRoT : The special case of HD 42618, a solar sister. In: Journal of Physics: Conference Series. 2013 ; Vol. 440, No. 1.
@article{895de44c6c7c435bae10b05176424cbe,
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 Othman 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",
year = "2013",
month = "1",
day = "1",
doi = "10.1088/1742-6596/440/1/012030",
language = "English (US)",
volume = "440",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

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

T2 - The special case of HD 42618, a solar sister

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, Othman

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 - 2013/1/1

Y1 - 2013/1/1

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.

UR - http://www.scopus.com/inward/record.url?scp=84880275632&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880275632&partnerID=8YFLogxK

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

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

M3 - Conference article

AN - SCOPUS:84880275632

VL - 440

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012030

ER -