Talk:Tip of the red-giant branch
|WikiProject Astronomy / Astronomical objects||(Rated Start-class, Mid-importance)|
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This article was automatically assessed because at least one WikiProject had rated the article as stub, and the rating on other projects was brought up to Stub class. BetacommandBot 10:04, 10 November 2007 (UTC)
So how does it work?
A set of edits made the article worse, so I reverted the whole edit. This has been reverted, so I'll comment here before reverting again. 1) "their composition of elements heavier than helium (metallicity) and their mass" -> "their metallicity or their mass": "metallicity" is a jargon term which should be defined in this article at first use. I don't think a wikilink is sufficient when it can be explained very easily for readers who are not versed in astronomical jargon. 2) "and" -> "or": ok, kept. 3) semicolon to period: "they are a standard candle..." comes very directly from the statement that the luminosity is insensitive to metallicity or mass, so I think should be separated by a semicolon, not put in a different sentence. 4) "This makes the technique especially useful as a distance indicator." -> "This makes it an especially useful tool as a distance indicator." I think the pronoun "it" is somewhat ambiguous, so using "the technique" is more clear but makes "tool" unnecessary. —Alex (Ashill | talk | contribs) 17:07, 13 August 2015 (UTC)
- The same editor changed "they [TRGB stars] are a standard candle" to "they provide a standard candle". Candle refers to the object (the star in this case), so "are" is the correct verb. If the star just "provides" a standard candle, what is the standard candle it provides? —Alex (Ashill | talk | contribs) 15:51, 21 August 2015 (UTC)