Editing Stellar classification (section)

====Class T{{anchor|Class T}}====
{{see also|T dwarf}}
[[File:T-dwarf-nasa-hurt.png|thumb|Artist's impression of a T-dwarf]]

Class&nbsp;T dwarfs are cool [[brown dwarf]]s with surface temperatures between approximately {{cvt|550|and|1300|K|C F}}. Their emission peaks in the [[infrared]]. [[Methane]] is prominent in their spectra.<ref name="kirk_ARAA"/><ref name="kirk_ApJ"/>

Study of the number of [[protoplanetary disk|proplyds]] (protoplanetary disks, clumps of gas in [[nebula]]e from which stars and planetary systems are formed) indicates that the number of stars in the [[galaxy]] should be several [[order of magnitude|orders of magnitude]] higher than what was previously conjectured. It is theorized that these proplyds are in a race with each other. The first one to form will become a [[protostar]], which are very violent objects and will disrupt other proplyds in the vicinity, stripping them of their gas. The victim proplyds will then probably go on to become main-sequence stars or brown dwarfs of the L and T classes, which are quite invisible to us.<ref>{{Cite journal|last=Camenzind|first=Max|date=September 27, 2006|title=Classification of Stellar Spectra and its Physical Interpretation|url=http://www.lsw.uni-heidelberg.de/users/jheidt/praktikum/Astrolab_WS2020/Task3/Task3.pdf|journal=Astro Lab Landessternwarte Königstuhl|pages=6|via=Heidelberg University}}</ref>