M32 in Andromeda (Paulo Cacella)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: LAMOSTJ004214.13+403920.7 · LGGS J004214.98+403909.8 · M 32 · MQ J004207.57+410100.7 · MQ J004216.57+410126.0 · MQ J004226.79+405001.2 · MQ J004234.02+404158.0 · MQ J004234.58+404430.8 · MQ J004247.99+405445.5 · MQ J004252.88+403810.1 · MQ J004255.66+404443.7 · MQ J004302.19+404446.2 · MQ J004305.59+404844.6 · MQ J004311.02+405915.0 · MQ J004312.58+404835.2 · MQ J004316.03+405414.9 · MQ J004319.60+404846.9 · NGC 221 · WISEA J004214.54+404648.5 · WISEA J004220.31+405122.9 · WISEA J004234.98+404839.0 · WISEA J004313.51+405522.1 · WISEA J004323.16+404309.5

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M32 in Andromeda

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M32 in Andromeda

Messier 32 (also known as NGC 221) is a dwarf elliptical galaxy located about 2.65 million light-years from Earth, appearing in the constellation Andromeda. M32 is a satellite galaxy of the Andromeda Galaxy (M31) and was discovered by Le Gentil in 1749. M32 measures 6.5 ± 0.2 thousand light-years in diameter at the widest point.[7] Like most elliptical galaxies, M32 contains mostly older faint red and yellow stars with practically no dust or gas and consequently no current star formation.[8] It does, however, show hints of star formation in the relatively recent past. [9]

The structure and stellar content of M32 is difficult to explain by traditional galaxy formation models. Some simulations suggest a scenario in which the strong tidal field of M31 can transform a spiral galaxy into a compact elliptical. As a small spiral galaxy falls into the central parts of M31, most of the outer layers of the smaller spiral are stripped away. The central bulge of the galaxy is much less affected and retains its morphology. Tidal effects trigger a massive star burst in the core, resulting in the high density of M32 observed today.[10] There is also evidence that M32 has an outer disk

At least two techniques have been used to measure distances to M32. The infrared surface brightness fluctuations distance measurement technique estimates distances to spiral galaxies based on the graininess of the appearance of their bulges. The distance measured to M32 using this technique is 2.46 ± 0.09 million light-years (755 ± 28 kpc).[2] However, M32 is close enough that the tip of the red giant branch (TRGB) method may be used to estimate its distance. The estimated distance to M32 using this technique is 2.51 ± 0.13 million light-years (770 ± 40 kpc).

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	1463154
PixInsight job	2EO0LP54IPW1V60BH2CNZZY7NDPUSQ7Q
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h42m47s.84
RA (top/left)	00h41m55s.45
RA (top/right)	00h41m53s.50
RA (bottom/right)	00h43m39s.77
RA (bottom/left)	00h43m42s.58

Dec (center)	+40°50′56″.3
Dec (top/left)	+41°04′08″.1
Dec (top/right)	+40°38′02″.6
Dec (bottom/right)	+40°37′42″.10
Dec (bottom/left)	+41°03′49″.4

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M32 in Andromeda

M32 in Andromeda

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