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UGC 2885
UGC 2885 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Perseus
Right ascension	03 53 02.458
Declination	+35° 35′ 22.17″
Redshift	0.019353
Distance	71.1 Mpc (232 Mly)
Apparent magnitude (V)	13.5
Characteristics
Type	SA(rs)c
Mass	2 trillion M☉
Size	463 kly (142 kpc)
Apparent size (V)	3.9′ × 1.9′
Other designations
TC 49, Z 039.8+3527, IRAS 03497+3526, MCG +06-09-012, PGC 14030, CGCG 526-012

UGC 2885 (Rubin's Galaxy, nicknamed "Godzilla galaxy") is a large barred spiral galaxy of type SA(rs)c in the constellation Perseus. It is 232 million light-years (71 Mpc) from Earth and measures 463,000 ly (142,000 pc) across, making it one of the largest known spiral galaxies. It is also a possible member of the Perseus–Pisces Supercluster.

UGC 2885 is a spiral galaxy with a relatively low surface brightness, but does not have as low of a surface brightness as other so-called giant low surface brightness galaxies.

UGC 2885 is classified as a field galaxy, being remarkably isolated from other galaxies. It is unknown how it got its cold gas which is necessary for star formation. NASA has reported that the theorized main source for disk growth for UGC 2885 came from the accretion of intergalactic hydrogen gas, rather than through the repeated process of galactic collision, as most galaxies are thought to grow.

The lack of interaction is evident from the near-perfect structure of the spiral arms and disk, lack of tidal tails, and modest rate of star formation—approximately 0.5 solar masses/year.

Additionally, despite being originally classified as an unbarred spiral galaxy, new Hubble images clearly show the presence of a small bar cutting across the ring structure of the core. This is peculiar, as most bars are thought to form through minor gravitational perturbations brought on by satellite and neighboring galaxies, which is something this galaxy lacks. This galaxy highlights that bars are able to form in spiral galaxies without the influence of another galaxy—this indicates that other forces, such as interactions between stars, gas and dust, as well as the gravitational influence of dark matter, might play a role in their development.

One supernova has been observed in UGC 2885: on 17 January 2002, the Katzman Automatic Imaging Telescope discovered SN 2002F (type II, mag. 18.1).

See also

• IC 1101
• NGC 6872 and IC 4970, mistakenly claimed to be the largest spiral galaxy in 2013
• Malin 1, the largest known spiral galaxy
• NGC 262

References

1. "Hubble Surveys Gigantic Galaxy". www.spacetelescope.org. Retrieved 6 January 2020.
2. ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
3. Canzian, Blaise; Allen, R. J.; Tilanus, R. P. J. (1993). "Spiral structure of the giant galaxy UGC 2885 – H-alpha kinematics". The Astrophysical Journal. 406: 457. Bibcode:1993ApJ...406..457C. doi:10.1086/172457.
4. ^ Tully, R. Brent; Courtois, Hélène M.; Sorce, Jenny G. (2016). "Cosmicflows-3". The Astronomical Journal. 152 (2): 50. arXiv:1605.01765. Bibcode:2016AJ....152...50T. doi:10.3847/0004-6256/152/2/50. S2CID 250737862.
5. ^ NASA/IPAC Extragalactic Database. "NED search results for object UGC 02885". Retrieved 2013-09-05.
6. Jeremy Heyl (1980). UGC 2885, the Largest Known Spiral Galaxy (PDF). The University of British Columbia.
7. "UGC 2885 – GIANT SIZE Spiral Galaxy". Retrieved 2016-05-17.
8. ^ Hunter, Deidre A.; Elmegreen, Bruce G.; Rubin, Vera C.; Ashburn, Allison; Wright, Teresa; Józsa, Gyula I. G.; Struve, Christian (2013). "Star Formation in Two Luminous Spiral Galaxies". The Astronomical Journal. 146 (4): 92. arXiv:1307.7116. Bibcode:2013AJ....146...92H. doi:10.1088/0004-6256/146/4/92. S2CID 119195964.
9. "UGC 2885". SIMBAD. Centre de données astronomiques de Strasbourg.
10. "APOD: 2020 January 25 – Rubin's Galaxy".
11. ^ "NASA's Hubble Surveys Gigantic Galaxy | NASA". 2 January 2020.
12. "UGC 2885 by jshuder". Retrieved 2018-05-17.
13. Lewis, B. M. (1985). "H I observations of supermassive spiral galaxies". The Astrophysical Journal. 292: 451. doi:10.1086/163174.
14. ^ Carvalho, Matheus C.; Naguleswaran, Bavithra; Barmby, Pauline; Gorski, Mark; Köenig, Sabine; Holwerda, Benne; Young, Jason (2024). "A multi-wavelength overview of the giant spiral UGC 2885". Astronomy & Astrophysics. 692: A105. doi:10.1051/0004-6361/202450916.
15. "SN 2002F". Transient Name Server. IAU. Retrieved 20 August 2024.
16. "UGC 2885, Spiral Galaxy; Supernova 2002 F". Retrieved 2016-05-17.
17. "SN 2002F". Archived from the original on 2016-04-04. Retrieved 2018-05-17.
18. Swift, B.; Li, W. D. (2002). "Supernovae 2002D, 2002E, 2002F, and 2002G". International Astronomical Union Circular (7797): 1. Bibcode:2002IAUC.7797....1S.

External links

• UGC 2885 at SIMBAD

v t e Constellation of Perseus
List of stars in Perseus Perseus in Chinese astronomy
Stars	Bayer α (Mirfak) β (Algol) γ δ ε ζ η (Miram) θ ι κ (Misam) λ μ ν ξ (Menkib) ο (Atik) π (Gorgonea Secunda) ρ (Gorgonea Tertia) σ τ φ ψ ω (Gorgonea Quarta) b Flamsteed 1 2 3 4 (g) 5 7 8 9 (i) 10 11 12 14 16 17 20 21 24 29 30 31 32 (l) 34 36 40 (o) 42 (n) 43 (A) 48 (c) 49 50 52 (f) 53 (d) 54 55 56 57 (m) 58 (e) 59 1 Aur Variable S T U V X Z RS RT RV RW RY ST SU SV TZ UV UX UY VX XX XY XZ YZ AB AG AR AS AW AX BM DM DY FO GK IK IP IQ IU IW IX IZ KP KS KT KW LX V351 V356 V357 V361 V376 V380 V386 V392 V396 V400 V423 V432 V440 V459 V461 V471 V472 V473 V480 V488 V490 V492 V505 V509 V518 V520 (61 And) V521 V545 V551 V572 V573 V575 V576 V621 V718 V1024 HR 470 526 529 538 540 621 641 787 792 810 820 831 842 846 849 864 865 876 885 886 890 894 918 (k) 920 923 930 949 950 956 964 966 969 973 975 979 986 991 1001 1019 1034 1037 1041 1047 1051 1056 1059 1074 1097 1113 1127 1130 1133 1141 1160 1164 1176 1191 1197 1198 1207 1215 1226 1234 1286 1301 1330 1333 1337 1344 1371 1390 1419 1424 1482 1489 1493 1500 1514 HD 13519 14433 14434 16691 16760 17092 17245 17605 21684 22781 23301 23596 25329 26702 29587 Other BD+31 643 BD+48 740 G 38-29 G 95-57 GD 61 HAT-P-15 (Berehynia) HAT-P-29 (Muspelheim) IRAS 04296+3429 L1448-IRS2E LkHα 101 LRLL 54361 NGC 1333 13 NGC 1333 IRAS 2A NGC 1333 IRAS 4A NGC 1333 IRAS 4B NGC 1624-2 PSR B0355+54 PSR J0357+3205 WR 4
Exoplanets WASP-11b/HAT-P-10b
Star clusters	NGC 869 (h) 884 (χ) 957 1039 1220 1285 1342 1444 1513 1528 1545 1624 Other Alpha Persei Cluster IC 348 Trumpler 2
Nebulae	NGC 650 (Little Dumbbell Nebula) 1333 1491 1499 (California Nebula) 1579 Other Barnard 203 Wreath Nebula
Galaxies	NGC 1003 1023 1058 1077 1086 1159 1160 1161 1167 1169 1175 (Peanut Galaxy) 1198 1250 1259 1260 1264 1265 1267 1268 1270 1271 1272 1273 1274 1275 1277 1278 1279 1281 1282 1283 1293 1294 1334 Other 1H 0323+342 IC 310 NRAO 140 UGC 2885 (Godzilla galaxy) 4C +37.11
Galaxy clusters Perseus Cluster
Astronomical events SN 2006gy Perseids
Category

• Perseus (constellation)
• Unbarred spiral galaxies
• UGC objects
• MCG objects
• IRAS catalogue objects
• Low surface brightness galaxies
• Interacting galaxies
• Principal Galaxies Catalogue objects