other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
2006MNRAS.370..468M - Mon. Not. R. Astron. Soc., 370, 468-476 (2006/July-3)
Surface differential rotation and photospheric magnetic field of the young solar-type star HD 171488 (V889 Her).
MARSDEN S.C., DONATI J.-F., SEMEL M., PETIT P. and CARTER B.D.
Abstract (from CDS):
We have incorporated a solar-like differential rotation law into the imaging process to determine the surface differential rotation of cool spots on HD 171488. This gives an equatorial rotation rate of 1.313±0.004 d and a surface shear of dΩ = 0.402±0.044 rad.d–1. This means that the equator of HD 171488 laps the poles every ∼16±2 d and that HD 171488 has a photospheric shear approximately seven times the solar value. This is the largest measurement of surface differential rotation yet obtained using the Doppler imaging method and is over twice the value of previously observed early G-dwarfs.
Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS
Journal keyword(s): line: profiles - stars: activity - stars: imaging - stars: individual: HD 171488 - stars: magnetic fields - stars: spots
Simbad objects: 8
To bookmark this query, right click on this link: simbad:2006MNRAS.370..468M and select 'bookmark this link' or equivalent in the popup menu