Talk:List of globular clusters

Database has moved

The URL of Marco Castellani's database (http://venus.mporzio.astro.it/~marco/gc/ at the Rome Astronomical Observatory) gives a 404. I found his website http://mcastel.weebly.com/ which contained http://gclusters.altervista.org/ . I hope this is the "official" one. --Ralf Muschall (talk) 18:33, 17 October 2010 (UTC)

Distance

Here's a reference for many globular cluster distances if somebody feels the urge to populate an additional column:

Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51.{{citation}}: CS1 maint: date and year (link)

- Regards, RJH (talk) 01:54, 17 April 2012 (UTC)

Was that ref used for the distance column ? Can we add it as a citation?

I was looking for distance range estimates. How best to find them ? Should we give ranges here ? - Rod57 (talk) 15:02, 20 November 2021 (UTC)

Looks like Boyles gives "Parameters for globular clusters searched for pulsars." not all of them - and many of the distances given (in his table 3) are from an unpublished source. - Rod57 (talk) 15:36, 20 November 2021 (UTC)

TIDAL RADII AND DESTRUCTION RATES OF GLOBULAR CLUSTERS IN THE MILKY WAY ... Moreno. 2014 Has data for 63 GC (based on Harris(2010)). All distances are given as +/- 10%. The radial velocities are much tighter. - Rod57 (talk) 16:33, 20 November 2021 (UTC)

Validation of the accuracy and precision of Gaia EDR3 parallaxes with globular clusters explains direct parallax. Gaia Parallax of Milky Way Globular Clusters - A Solution of Mixture Model adds some background on other methods. - Rod57 (talk) 01:13, 21 November 2021 (UTC)

NGC5466 - done

Where is NGC 5466? 89.142.184.35 (talk) 10:04, 5 September 2013 (UTC)

 Done In the list. - Rod57 (talk) 15:02, 20 November 2021 (UTC)

McMaster U list

This table may be useful for building our list http://physwww.physics.mcmaster.ca/~harris/mwgc.dat

It can also be accessed through a query interface http://gclusters.altervista.org/index.php

-- 76.65.128.252 (talk) 11:24, 19 August 2012 (UTC)

Assessment comment

The comment(s) below were originally left at Talk:List of globular clusters/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

This article needs a lot of work, in my opinion. There are something like 200 globular clusters associated with our galaxy, so the list is very incomplete. Also, there are errors. For instance, M2 is in Aquarius, not Ophiuchus, and M4 is in Scorpius, not Canes Venatici.

Last edited at 17:44, 8 April 2008 (UTC). Substituted at 22:13, 29 April 2016 (UTC)

Recent updates - 2017

I searched the internet for other lists of globular clusters and updated this table with the median values from all these sources. The only Milky Way clusters that were not found in any of these sources were Laevens 1 and Segue 3. In the Local Group list, only the Sag DEG clusters were included in these sources. There are a few more clusters that were included in the sources but not in this table. I will add them soon. --Lasunncty (talk) 02:12, 21 June 2017 (UTC)

@Lasunncty: Could you list the sources you used (here, and cite near the table?) ? Did you calculate the medians ? Are there no sources that provide medians and range estimates ? Sources that give references would be preferred ? Later distance estimates might be more accurate ? - Rod57 (talk) 15:46, 20 November 2021 (UTC)

The references that are currently listed in the article are the ones I used. (Any clusters added since 2017 have not been referenced.) Yes, I took the medians, as the sources did not always agree with each other, and did not provide uncertainties. I just updated a couple ref links that were outdated, but I imagine that there are probably new sources that could be used as well. --Lasunncty (talk) 05:02, 21 November 2021 (UTC)

Missing a Local Group Cluster

The Local Group list is missing: NGC 265, Julianstout (talk) 22:07, 28 September 2019 (UTC)

From what I can find, NGC 265 is an open cluster, not a globular. Do you have a reference that says otherwise? --Lasunncty (talk) 09:05, 4 October 2019 (UTC)

unsourced additions

@Space2006: Can you please include sources for the clusters you have added to the list? Otherwise they may need to be removed. --Lasunncty (talk) 01:08, 27 December 2019 (UTC)

More unsourced entries have been added by Loooke. There is one new ref, so thanks for that. But every entry should be listed in at least one of the refs so that the data can be verified. --Lasunncty (talk) 09:47, 4 January 2022 (UTC)

The source for those new globular clusters is in the Reference section:

• Milky Way Globular Clusters [1][2], Students for the Exploration and Development of Space

Loooke (talk) 16:12, 4 January 2022 (UTC)

Lots more SMC & LMC globulars

A very recent edition of the star atlas Uranometria 2000 Volume 2 lists all of these NGC objects as globular clusters associated with the SMC. I do believe that Uranometria certainly qualifies as a "reliable source"; but, as this is an atlas, how would one link to a reference to it?

NGCs: 152, 265, 269, 339, 361, 376, 411, 416, 419, 458. Not in Uranometria, there are also at least 2 Cron clusters that are classified as SMC globulars, but I dont have reliable Cron numbers for them. Users of SIMBAD more skilled than I should be able to confirm the Cron numbers.

Similarly, Uranometria lists these NGC objects as LMC globulars.

NGCs: 1644, 1651, 1652, 1751, 1754, 1783, 1786, 1795, 1786, 1806, 1835, 1846, 1868, 1896, 1917, 1953, 1978, 1987, 2019, 2108, 2121, 2133, 2154, 2161, 2162, 2173, 2190, 2209, 2210, 2213, 2231, 2241, 2249.

I also have a random notation of an LW79, which google informs me is indeed an LMC globular.

Finally, there has been some discussion that the "globular clusters" associated with the SMC and LMC are not "true" globular clusters in the sense that Milky Way ones are, but I don't have any specific reliable source. They therefore assert that they are open clusters. As a result, some of the NGC clusters that I have listed above are listed in Wikipedia as open rather than globular. I have no idea how this issue should be resolved. — Preceding unsigned comment added by 2001:8003:e422:3c01:108f:f273:d3a:de7f (talk) 11:24, 8 July 2021 (UTC)

IC1257 not listed

Google images show quite clearly that it is a globular cluster; and at that size, it cant be anything other than a Milky Way one. — Preceding unsigned comment added by 2001:8003:e422:3c01:3c16:1da9:b9e8:a08e (talk) 11:33, 11 July 2021 (UTC)

Muñoz 1 not a GC associated with the UMi Dwarf?

Ref 53 on the page points (indirectly) to https://arxiv.org/pdf/1204.5750.pdf where Muñoz et al. explicitly state "This new satellite is separate from Ursa Minor by ∼ 30 kpc and 110 kms−1 suggesting the cluster is not obviously associated with the dSph, despite the very close angular separation."

Xilman (talk) 20:17, 7 September 2022 (UTC)