Talk:Satellite galaxies of the Milky Way

New satellite galaxies

Looks like Milky Way's neighborhood is getting crowded: Seven or eight dwarf galaxies discovered orbiting the Milky Way. One of them, Leo T, has a preprint at arXiv.org ([1]). Looks like it has experienced star formation recently.--JyriL ^talk 20:08, 9 January 2007 (UTC)

Revisions to the list

I would suggest using this paper by Karachentsev as a beginning point for writing this list. Would other people object if I rewrote this article using Karachentsev's paper? Dr. Submillimeter 07:38, 18 May 2007 (UTC)

"According to Daniel Zucker, astronomers now accept 14 mini-galaxies as Milky Way satellites. This tally includes the Large and Small Magellanic Clouds (classed as dwarf irregular galaxies), and 10 dwarf spheroidal galaxies: Draco, Ursa Minor, Sextans, Sculptor, Leo I , Leo II, Fornax, Ursa Major, Sagittarius, and Carina. The two new satellites, Canes Venatici and Boötes, are also classed as dwarf spheroidals. Not included in this count are two possible disrupting satellites, Canis Major and the Virgo Overdensity, whose identifications remain somewhat controversial. The Virgo Overdensity was also found using SDSS data." from http://www.astronomy.com/asy/default.aspx?c=a&id=4245. The website is dated 10 May 2006. This list doesn't quite agree with that on the Wikipedia web page and neither lists "Phoenix" which appears at the bottom of the page. It might be better to split the "other" section into "other galaxies" and "streams". "Streams" would include the Monoceros and Magellanic streams for starters. Mollwollfumble (talk) 06:00, 26 June 2008 (UTC)

expand

This article should be expanded to be more like Andromeda's satellite galaxies, the equivalent article for Andromeda. 70.51.9.25 (talk) 06:49, 14 July 2008 (UTC)

Data doesn't match for Sag DEG.

The Sag DEG is said to have a 20,000 LY diameter in the text yet in the table of dwarf galaxies it is given a 2 KPC diameter. 20,000/3.26/1000=6.134KPC and 2KPC=6,520LY. Which is it?

99.59.129.23 (talk) 13:55, 19 September 2013 (UTC)Joseph Paul

I have corrected the text to specify the correct diameter, and updated the table accordingly (as well as including a reference. Hopefully this resolves the problem! :-) --  Newty  10:25, 21 April 2016 (UTC)

galactocentric coordinates

I think the distances given in this table would be better as galactocentric distances (distances from Sagittario), and not geocentric distances (distances from Terra). Listing full spherical galactic coordinates would be useful as well to plot their locations in 3-space (otherwise each entry has to be looked up individually). I would suggest at least four columns: galactic longitude (and/or equatorial right ascension), galactic latitude (and/or equatorial declination), distance from the galactic center (Sagittario), and distance from Solar Terra. Nicole Sharp (talk) 07:22, 10 September 2016 UTC

Hi there. A lot of CO new images about Local Group and recent satellite galaxies of the MW here: https://www.flickr.com/photos/133259498@N05/ — Preceding unsigned comment added by 176.32.29.16 (talk) 19:03, 11 September 2018 (UTC)

Satellite or neighbour ?

Hello, in your table there is a mix of satellites and external galaxies.

We must distinguish between satellite galaxies, in orbit around the Milky Way, ~ 35 members, and galaxies of the Local Group (~ 36 members), so for a total of ~71 galaxies of which 4 members were discovered since 2008 in a radius of 3 Mpc. --luxorion