M54 from the backyard, not what it seems according to ESO (Claudio Tenreiro)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: M 54 · NGC 6715 · PGC 208853 · PGC 208937 · PGC 208970 · PGC 209006 · PGC 209024 · PGC 209036 · PGC 209096 · PGC 209097 · PGC 209102 · PGC 209136 · PGC 209143 · PGC 209165 · PGC 209202 · PGC 209215 · PGC 209221 · PGC 209233 · PGC 209363 · PGC 209365 · PGC 209380

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M54 from the backyard, not what it seems according to ESO

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M54 from the backyard, not what it seems according to ESO

The globular cluster M54, quite a nice globular cluster with a highly dense core. According to ESO, this cluster does not belong to our galaxy but to Sagittarius Dwarf, and has interesting features, as can be read in: https://www.eso.org/public/news/eso1428/
Using the VLT astronomers now confirm that a Li problem in our galaxy is also there. At the beginning M54 was associated as one of the clusters of our galaxy and not before 1994 it was discovered that was not the case, it belongs as satellite to the Sagittarius Dwarf Galaxy. So the kind of Li anomaly (it is also called the Cosmological Li problem), its mechanism really, is also present there, as it is stated in that article.
The article in detail is here:
https://www.eso.org/public/archives/releases/sciencepapers/eso1428/eso1428a.pdf

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Status	Advanced success
Started	...
Astrometry.net job	4853144
PixInsight job	RJGMDLECVB6R0IOQ2OLI3VQ4TW7QVQPN
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h54m18s.21
RA (top/left)	18h57m07s.88
RA (top/right)	18h51m29s.80
RA (bottom/right)	18h51m26s.82
RA (bottom/left)	18h57m07s.69

Dec (center)	-30°35′12″.10
Dec (top/left)	-30°10′00″.3
Dec (top/right)	-30°09′30″.5
Dec (bottom/right)	-31°00′07″.7
Dec (bottom/left)	-31°00′37″.0

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M54 from the backyard, not what it seems according to ESO

M54 from the backyard, not what it seems according to ESO

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M54 from the backyard, not what it seems according to ESO

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