SIMBAD references

2007ApJ...657.1058V - Astrophys. J., 657, 1058-1063 (2007/March-2)

Measurement of the surface gravity of η Bootis.


Abstract (from CDS):

Direct angular size measurements of the G0 IV subgiant η Boo from the Palomar Testbed Interferometer are presented, with a limb-darkened angular size of θLD=2.1894+0.0055–0.0140mas, which indicates a linear radius of R=2.672±0.028 R. A bolometric flux estimate of Fbol=(22.1±0.28)x10–7 ergs/cm2/s is computed, which indicates an effective temperature of Teff=6100±28 K and a luminosity of L=8.89±0.16 Lfor this object. Similar data are established for a check star, HD 121860. The η Boo results are compared to, and confirm, similar parameters established by the MOST asteroseismology satellite. In conjunction with the mass estimate from the MOST investigation, a surface gravity of logg=3.817±0.016 [cm/s2] is established for η Boo.

Abstract Copyright:

Journal keyword(s): Infrared: Stars - Stars: Fundamental Parameters - Stars: Individual: Constellation Name: η Bootis - Techniques: Interferometric

Simbad objects: 8

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