>Jjamulla at 00:22, 13 September 2024

2024-09-13T00:22:56Z

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{{Lua|Module:Infobox|Module:InfoboxImage|Module:Check for unknown parameters}}
Infobox for articles on [[galaxy|galaxies]].

The parameters whose title has "(V)" or "(B)" refer to visible or bolometric values.

== Usage ==
{| style="background: transparent;"
|<syntaxhighlight lang="wikitext">{{Infobox galaxy
| name = {{PAGENAME}}
| image = 
| image_scale = 
| caption = 
| alt = 
| epoch = 
| pronounce = {{IPA-en||}}
| constellation name = 
| ra = {{RA|00|00|00}} 
| dec = {{DEC|±00|00|00}} 
| z = 
| h_radial_v = 
| gal_v = 
| dist_pc = {{cvt|000|±|00|Mpc|Mly|order=flip|lk=on}}{{hub|0.73}} 
| dist_ly = {{cvt|000|±|00|Mpc|Mly|order=flip|lk=on}}
| group_cluster = 
| type = 
| mass = 
| mass_light_ratio = 
| size = 
| stars = 
| appmag_v = 
| appmag_b = 
| absmag_v = 
| mag_j = 
| mag_h = 
| mag_k = 
| sbrightness = 
| size_v = 
| half_light_radius_pc = 
| half_light_radius_arcminsec = 
| h1_scale_length_pc = 
| h1_scale_length_arcminsec = 
| xray_radius_pc = 
| xray_radius_arcminsec = 
| notes = 
| names = {{odlist | NGC= | Arp= | PGC= | UGC= }} 
| references = 
}}</syntaxhighlight>
|}

== Parameters ==

=== z, h_radial_v, gal_v ===
These fields provide [[radial velocity]] values for the galaxy as a whole. The dimensionless quantity <code>z</code> is the [[redshift]] parameter and is used when the value is very small, such as less than 0.1. The <code>h_radial_v</code> gives the heliocentric radial velocity of the galaxy in units of km/s. The parameter <code>gal_v</code> refers to the galactrocentric radial velocity (the radial velocity relative to the Milky Way), which can be found on NED under the section "Quantities Derived from Redshift" if one looks up a galaxy.

=== dist_ly ===
The <code>dist_ly</code> field lists the estimated distance to the galaxy in both [[light-year]]s and [[parsec]]s. To do so, use the {{tl|cvt}} template. For example: {{tlx|cvt|2810|+/-|90|kly|kpc|lk{{=}}on|_show_result=yes}}
* {{tl|hub}} identifies the [[dimensionless Hubble parameter]] used in the distance measurement. Using NED's default value of 0.73, {{tlx|hub|0.73|_show_result=yes}}.
* {{tlx|hub|_show_result=yes}} if distance is left in 'units' of h.

=== group_cluster ===
The parameter {{para|group_cluster}} refers to the [[galaxy group]] or [[galaxy cluster]] that the galaxy is a member.

=== type ===
The parameter {{para|type}} is the [[Galaxy morphological classification|de Vancoleurs morphological type]] of the galaxy. These can be found on NED or SIMBAD. (Note that a <code>^</code> in NED is actually a superscript, so for example S0^0 should be written as S00 .)

In SIMBAD the morphological type is often given as a number between -6 and 11. To convert these into the de Vaucouleurs class, use this table from [[Galaxy morphological classification#Numerical Hubble stage|this article]]:
{| class="wikitable" style="text-align: center; margin: 1em auto;"
|+ Converting numerical Hubble stage to de Vancoleurs classes
! Numerical Hubble stage
| −6
| −5
| −4
| −3
| −2
| −1
| 0
| 1
| 2
| 3
| 4
| 5
| 6
| 7
| 8
| 9
| 10
| 11
|-
!de Vaucouleurs class
| cE
| E
| E+
| S0−
| S00
| S0+
| S0/a
| Sa
| Sab
| Sb
| Sbc
| Sc
| Scd
| Sd
| Sdm
| Sm
| Im
| Irr
|-
|}

=== appmag_v, appmag_b, absmag_v ===
The <code>appmag_v</code> give the apparent magnitude of the galaxy in the visual band, while <code>appmag_b</code> gives the same in the B (blue) band. The <code>absmag_v</code> is the absolute magnitude of the galaxy.

=== mag_j, mag_h, mag_k ===
The <code>mag_j</code> give the IR magnitude of the galaxy in the infrared band at 1220 nm. The <code>mag_h</code> give the IR magnitude of the galaxy in the infrared band at 1630 nm. The <code>mag_k</code> give the IR magnitude of the galaxy in the infrared band at 2190 nm.

=== size_v ===
The <code>size_v</code> field lists the visual [[angular size]] of the galaxy along the major and minor axes, given in units of arc minutes or arc seconds. For example: {{nowrap|4.3′ × 0.8′}}. For non-visual dimensions, the band should be also listed, such as ([[infrared astronomy|IR]]) or ([[ultraviolet astronomy|UV]]).

=== names ===
This is a list of catalog identifiers for a galaxy, preferably presented using the {{tl|odlist}} template.

== See also ==
* [[Template:Cite journal]]
* [[Template:Cite web]]
* [[Template:Infobox galaxy cluster]]
* [[Template:Infobox globular cluster]]

<includeonly>{{basepage subpage|

[[Category:Astronomy infobox templates|Galaxy]]

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Template:Infobox galaxy/doc - Revision history

>Jjamulla at 00:22, 13 September 2024