2014A&A...568L..12N


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.19CEST05:27:34

2014A&A...568L..12N - Astronomy and Astrophysics, volume 568, L12-12 (2014/8-1)

Rotational splitting as a function of mode frequency for six Sun-like stars.

NIELSEN M.B., GIZON L., SCHUNKER H. and SCHOU J.

Abstract (from CDS):

Asteroseismology offers the prospect of constraining differential rotation in Sun-like stars. Here we have identified six high signal-to-noise main-sequence Sun-like stars in the Kepler field, which all have visible signs of rotational splitting of their p-mode frequencies. For each star, we extract the rotational frequency splitting and inclination angle from separate mode sets (adjacent modes with l=2, 0, and 1) spanning the p-mode envelope. We use a Markov chain Monte Carlo method to obtain the best fit and errors associated with each parameter. We are able to make independent measurements of rotational splittings of ∼8 radial orders for each star. For all six stars, the measured splittings are consistent with uniform rotation, allowing us to exclude large radial differential rotation. This work opens the possibility of constraining internal rotation of Sun-like stars.

Abstract Copyright:

Journal keyword(s): asteroseismology - stars: rotation - stars: solar-type - methods: data analysis

VizieR on-line data: <Available at CDS (J/A+A/568/L12): table1.dat table2.dat>

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 HD 176693 Ro* 18 59 08.6846510375 +48 25 23.598982331   9.34 8.83     F8V 87 0
2 HD 177153 PM* 19 01 39.6781881955 +41 29 24.325583971   7.76 7.21     G0 82 0
3 BD+42 3247 PM* 19 06 58.3261704119 +42 26 08.264161006   10.32 9.75     G0.5IV 50 0
4 BD+39 3706 PM* 19 16 34.9029087477 +40 02 50.362111184       9.1   G1.5V 56 0
5 HD 181207 PM* 19 17 46.3566541779 +41 24 36.837551319   9.06 8.47     F9IV-V 65 0
6 HD 182756 * 19 24 30.3488994710 +40 19 23.671169678   9.01 8.31     G1V 49 0

    Equat.    Gal    SGal    Ecl

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2019.10.19-05:27:34

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