2019MNRAS.485.3857T

Query : 2019MNRAS.485.3857T

2019MNRAS.485.3857T - Mon. Not. R. Astron. Soc., 485, 3857-3868 (2019/May-3)

Asteroseismic constraints on active latitudes of solar-type stars: HD 173701 has active bands at higher latitudes than the Sun.

THOMAS A.E.L., CHAPLIN W.J., DAVIES G.R., HOWE R., SANTOS A.R.G., ELSWORTH Y., MIGLIO A., CAMPANTE T. and CUNHA M.S.

Abstract (from CDS):

We present a new method for determining the location of active bands of latitude on solar-type stars, which uses stellar-cycle-induced frequency shifts of detectable solar-like oscillations. When near-surface activity is distributed in a non-homogeneous manner, oscillation modes of different angular degree and azimuthal order will have their frequencies shifted by different amounts. We use this simple concept, coupled to a model for the spatial distribution of the near-surface activity, to develop two methods that use the frequency shifts to infer minimum and maximum latitudes for the active bands. Our methods respond to the range in latitude over which there is significant magnetic flux present, over and above weak basal ephemeral flux levels. We verify that we are able to draw accurate inferences in the solar case, using Sun-as-a-star helioseismic data and artificial data. We then apply our methods to Kepler data on the solar analogue HD 173701, and find that its active bands straddle a much wider range in latitude than do the bands on the Sun.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): asteroseismology - stars: activity - stars: individual: (HD 173701)

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 173701 PM* 18 44 35.1191008536 +43 49 59.790008892   8.37 7.52     G8V 210 0

Query : 2019MNRAS.485.3857T

Basic data :
HD 173701 -- High Proper Motion Star
Other object types: otypes_help 		* (2013A&A,HD,...), PM* (Ci), NIR (2MASS)
ICRS coord. (ep=J2000) : 		18 44 35.1191008536 +43 49 59.790008892 (Optical) [ 0.0151 0.0164 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		18 43 04.7380937888 +43 46 49.344400028 [ 0.0151 0.0164 90 ]
Gal coord. (ep=J2000) : 		073.0026293353261 +19.5719395292183 [ 0.0151 0.0164 90 ]
Proper motions mas/yr : 		-105.535 -1.905 [0.021 0.021 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -45.555 [0.0008] / z(spectroscopic) -0.000152 [0.000000] / cz -45.55 [0.00]
   (Opt) A 2018A&A...616A...7S
Parallaxes (mas): 		36.9865 [0.0186] A 2020yCat.1350....0G
Spectral type: 		G8V C 2013MNRAS.434.1422M
Fluxes (6) :
B 8.37 [~] E ~
V 7.52 [~] E ~
G 7.327226 [0.002759] C 2020yCat.1350....0G
J 6.088 [0.021] C 2003yCat.2246....0C
H 5.751 [0.016] C 2003yCat.2246....0C
K 5.670 [0.021] C 2003yCat.2246....0C
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Identifiers (25) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 173701 GSC 03130-00722 PPM 57445 UBV M 23212
AG+43 1559 HIC 91949 SAO 47755 Gaia DR3 2117279002732678656
BD+43 3058 HIP 91949 SKY# 34420 Gaia DR1 2117278998434010240
Ci 18 2455 KIC 8006161 SPOCS 2146 Gaia DR2 2117279002732678656
GEN# +1.00173701 2MASS J18443514+4349599 SPOCS 812
GJ 725.1 PLX 4329 TIC 123234496
GJ 9634 PLX 4329.00 TYC 3130-722-1

References (210 between 1850 and 2026) (Total 210)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 8    Diameter : 1    Distance : 3    Var : 2    Rot : 7    Fe/H : 30    Plx : 7    PM : 4    SpT : 3   

   

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HD 173701 AG+43 1559 BD+43 3058 GJ 725.1 GJ 9634
GSC 03130-00722 HIC 91949 HIP 91949 KIC 8006161 2MASS J18443514+4349599
PLX 4329 PPM 57445 SAO 47755 TYC 3130-722-1 Gaia DR3 2117279002732678656
Gaia DR1 2117278998434010240 Gaia DR2 2117279002732678656

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