<html><head><meta http-equiv="content-type" content="text/html; charset=us-ascii"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">Dear Semantics,<div><br></div><div>I have a user that is asking which units should be used for logarithmic abundances relative to the sun;</div><div>He is suggesting:</div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>log(Sun)</div><div><br></div><div>At first I was surprise, but reading the VOUnit standard (*) I think he is right.</div><div>Do you confirm?</div><div><br></div><div>(*) The VOUnit standard v1.1 Table 5 states: "<tt><span class="small"><span style="color: rgb(127, 76, 0);">Sun</span></span></tt><span style="font-family: -webkit-standard; font-size: medium;"> (relative to the Sun, e.g. abundances)"</span> </div><div><br></div><div>Many thanks,</div><div>Alberto</div><div><br></div><div><br></div></body></html>