Template:Dimensionless Hubble constant/doc

Description

Many properties of cosmological objects are reported with the addition of the dimensionless Hubble parameter h. This template addresses only the inverse Hubble parameter h⁻¹
_0.70 (since h_0.70 is more straightforward to wikicode). If no subscript is specified, then the reader may choose a value of h of their liking to modify whatever the reported measurement is. If a subscript is specified, then the property being reported has been modified by the value of that subscript. For example, 7×10¹³ h⁻¹
  M_☉ = 10¹⁴ h⁻¹
_0.70 M_☉.

Our best measurement, as of 2013, for the Hubble parameter is h = 0.6780 ±0.0077 from the Planck mission. In early 2011 it was 0.704^+0.013
_−0.014 from WMAP 7-year data. See Hubble's law#Determining the Hubble constant for the most recent value of H₀.

Usage

Instead of writing ''h''<small>{{su|p=−1|b=0.6780|a=l}}</small>, one can simply do the following (a numerical subscript is now optional):

• {{hub|0.6780}} → h⁻¹
  _0.6780
• {{hub|0.75}} → h⁻¹
  _0.75
• {{hub}} → h⁻¹
   

Options

To include a link to Hubble's law#Dimensionless Hubble parameter, use the |link= parameter. It is optional and defaults to not-used, <blank>, or <null>. It is activated by "yes", or any text:

• {{hub|0.7|link=yes}} → h⁻¹
  _0.7
• {{hub|0.7|link=y}} → h⁻¹
  _0.7
• {{hub|link=no}} → h⁻¹
   

See also

• {{±}} : specific form of {{su}} with hard-coded positive {{sup}} and negative {{sub}}: 1^+0.2
  _−0.4
• {{e}} : (1.23×10⁴)
• {{su}} : general form of {{±}} for formatting exponents, or two-values incertainty one below the other (monospaced : currently not printable to PDF)
• {{sub}} : _subscript text
• {{sup}} : ^superscript text
• Subscript and superscript