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Adding some more astro units #196

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Adding some more astro units #196

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35 changes: 35 additions & 0 deletions src/units.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -261,6 +261,41 @@ end
## Magnetic flux densities
@_lazy_register_unit Gauss 1e-4 * T

## Astro units
@_lazy_register_unit erg 1e-7 * J
@_lazy_register_unit dyn 1e-5 * N
@_lazy_register_unit Jy 1e-26 * W / m^2 / Hz
@_lazy_register_unit angstrom 1e-10 * m
@_lazy_register_unit Å angstrom
@_lazy_register_unit micron 1e-6 * m

@add_prefixes erg ()
@add_prefixes dyn ()
@add_prefixes Jy (u, μ, m, M)
@add_prefixes angstrom ()
@add_prefixes micron ()

@doc(
"Energy in ergs.",
erg,
)
@doc(
"Force in dynes.",
dyn,
)
@doc(
"Spectral flux density in janksys. Available variants: `uJy` (/`μJy`), `mJy`, `MJy`.",
Jy,
)
@doc(
"Length in angstroms.",
angstrom,
)
@doc(
"Length in angstroms. Also available is ASCII `angstrom`",
Å,
)

# Do not wish to define Gaussian units, as it changes
# some formulas. Safer to force user to work exclusively in one unit system.

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