Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-07-16
Astrophys.J. 615 (2004) 1042-1047
Astronomy and Astrophysics
Astrophysics
ApJ, in press
Scientific paper
10.1086/424591
An extremely high-resolution (> 10^5) high-S/N (> 10^3) solar spectrum has been used to measure 15 very weak first overtone (Delta v = 2) infrared OH lines, resulting in a low solar abundance of A(O) ~ 8.6 when MARCS, 3D, and spatially and temporally averaged 3D model atmospheres are used. A higher abundance is obtained with Kurucz (A(O) ~ 8.7) and Holweger & Muller (A(O) ~ 8.8) model atmospheres. The low solar oxygen abundance obtained in this work is in good agreement with a recent 3D analysis of [OI], OI, OH fundamental (Delta v = 1) vibration-rotation and OH pure rotation lines (Asplund et al. 2004). The present result brings further support for a low solar metallicity, and although using a low solar abundance with OPAL opacities ruins the agreement between the calculated and the helioseismic measurement of the depth of the solar convection zone, recent results from the OP project show that the opacities near the base of the solar convection zone are larger than previously thought, bringing further confidence for a low solar oxygen abundance.
No associations
LandOfFree
A Low Solar Oxygen Abundance from the First Overtone OH Lines does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Low Solar Oxygen Abundance from the First Overtone OH Lines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Low Solar Oxygen Abundance from the First Overtone OH Lines will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-11922