User:Deepak Purti/sandbox

ESO 461-36
ESO 461-36
	"Stellar Glitter in a Field of Black"; Although this Hubble image appears to be full of galaxies, they are actually beyond the void, and instead form part of other galaxy clusters.
Observation data (J2000 epoch)
Constellation	Sagittarius
Right ascension	20h 03m 57.4s
Declination	−31° 40′ 53″
Redshift	0.001429
Heliocentric radial velocity	428.2 km/s
Characteristics
Type	dIrr
Other designations
	KK 246, LEDA 64054, HIPASS J2003-31

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KK 246, also known as ESO 461-036 or ESO 461-G036, is a dwarf irregular galaxy residing within the Local Void. This galaxy is the only one confirmed to be located in the Local Void, while 15 others have been tentatively identified;^[5] presenting a challenge to ΛCDM, which overpopulates the voids.^[6]

It has been identified as the most isolated dwarf galaxy known in the Local Volume, with no galaxies discovered within 3 Mpc (9.8 Mly).^[7]

Its distance was estimated to be 7.8 ± 0.6 Mpc (25.4 ± 2.0 Mly) by Karachentsev et al. (2006) using the TRGB method, which was deemed to be too high by Tully et al. (2008) because of the reddening estimate used.

^ "Stellar Glitter in a Field of Black". European Space Agency. 2020-05-18. Retrieved 2024-04-07.
^ ^a ^b Lazaro, Enrico de (2020-05-18). "Hubble Spots Lonely Dwarf Galaxy | Sci.News". Sci.News: Breaking Science News. Archived from the original on 2024-04-07. Retrieved 2024-04-07.
^ ^a ^b ^c ^d "ESO 461-36". simbad.u-strasbg.fr. Retrieved 2024-04-07.
^ Kirby, Emma M.; Jerjen, Helmut; Ryder, Stuart D.; Driver, Simon P. (2008-10-07). "DEEP NEAR-INFRARED SURFACE PHOTOMETRY OF 57 GALAXIES IN THE LOCAL SPHERE OF INFLUENCE". The Astronomical Journal. 136 (5): 1866–1888. doi:10.1088/0004-6256/136/5/1866. ISSN 0004-6256.
^ "Hubble Sees Stellar Glitter in a Cosmic Void". NASA. 2020-05-22. Retrieved 2024-04-07.
^ Kreckel, K.; Peebles, P. J. E.; van Gorkom, J. H.; van de Weygaert, R.; van der Hulst, J. M. (2011-05-12). "KK 246: A DWARF GALAXY WITH AN EXTENDED H I DISK IN THE LOCAL VOID". The Astronomical Journal. 141 (6): 204. doi:10.1088/0004-6256/141/6/204. ISSN 0004-6256.
^ Nicholls, David C.; Jerjen, Helmut; Dopita, Michael A.; Basurah, Hassan (2013-12-13). "NEBULAR METALLICITIES IN TWO ISOLATED LOCAL VOID DWARF GALAXIES". The Astrophysical Journal. 780 (1): 88. doi:10.1088/0004-637X/780/1/88. ISSN 0004-637X.

[1] "Stellar Glitter in a Field of Black". European Space Agency. 2020-05-18. Retrieved 2024-04-07.

[scinews-2] Lazaro, Enrico de (2020-05-18). "Hubble Spots Lonely Dwarf Galaxy | Sci.News". Sci.News: Breaking Science News. Archived from the original on 2024-04-07. Retrieved 2024-04-07.

[simbad-3] "ESO 461-36". simbad.u-strasbg.fr. Retrieved 2024-04-07.

[4] Kirby, Emma M.; Jerjen, Helmut; Ryder, Stuart D.; Driver, Simon P. (2008-10-07). "DEEP NEAR-INFRARED SURFACE PHOTOMETRY OF 57 GALAXIES IN THE LOCAL SPHERE OF INFLUENCE". The Astronomical Journal. 136 (5): 1866–1888. doi:10.1088/0004-6256/136/5/1866. ISSN 0004-6256.

[5] "Hubble Sees Stellar Glitter in a Cosmic Void". NASA. 2020-05-22. Retrieved 2024-04-07.

[6] Kreckel, K.; Peebles, P. J. E.; van Gorkom, J. H.; van de Weygaert, R.; van der Hulst, J. M. (2011-05-12). "KK 246: A DWARF GALAXY WITH AN EXTENDED H I DISK IN THE LOCAL VOID". The Astronomical Journal. 141 (6): 204. doi:10.1088/0004-6256/141/6/204. ISSN 0004-6256.

[7] Nicholls, David C.; Jerjen, Helmut; Dopita, Michael A.; Basurah, Hassan (2013-12-13). "NEBULAR METALLICITIES IN TWO ISOLATED LOCAL VOID DWARF GALAXIES". The Astrophysical Journal. 780 (1): 88. doi:10.1088/0004-637X/780/1/88. ISSN 0004-637X.

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