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3C 321
Galaxy system 3C 321. A stream of energy is erupting from the "Death Star Galaxy" at bottom-left, striking its companion galaxy at top-right.
Observation data (J2000 epoch)
Constellation	Serpens
Right ascension	15 31 43.48
Declination	+24° 04′ 19.3″
Redshift	0.096190
Heliocentric radial velocity	27456 km/s
Distance	1.2 billion ly (370 Mpc) (Light travel time)
Apparent magnitude (V)	16.00
Apparent magnitude (B)	16.32
Characteristics
Type	Sa
Other designations
PGC 55317

3C 321 is a system of two galaxies rotating around each other. They are notable for showing the first observed galaxy smiting another galaxy with a blast of energy, which is theorized to be from a supermassive black hole at the center of the former galaxy.

The larger galaxy, dubbed the "Death Star Galaxy" by NASA astronomers, has an energetic jet directed towards its companion. The discovery was announced by NASA on 18 December 2007. Observation of the enormous jet was possible due to the combined efforts of both space and ground-based telescopes.

Tools included NASA's Chandra X-ray Observatory, Hubble Space Telescope, Spitzer Space Telescope, the Very Large Array, and the Multi-Element Radio Linked Interferometer Network.

References

1. ^ "Search specification: 3C 321". HyperLeda. Université Claude Bernard Lyon 1. Retrieved 2021-02-12.
2. ^ "3C 321". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-12.
3. "NASA/IPAC Extragalactic Database". Results for 3C 321. Retrieved 2010-04-26.

Further reading

• Hautaluoma, Grey; Morcone, Jennifer; Watzke, Megan (17 December 2007). "'Death Star' Galaxy Black Hole Fires at Neighboring Galaxy". NASA.
• Phillips, Tony (18 December 2007). "NASA Announces Discovery of Assault by a Black Hole". Science@NASA. NASA.
• Mosher, Dave (17 December 2007). "Galaxy Blasts Neighbor with Deadly Jet". Space.com.
• O'Hanlon, Larry (17 December 2007). "Galaxy Zapping Neighbor With Deathly Beam". Discovery News. Archived from the original on 19 December 2007.

External links

• "Black Hole Fires at Neighboring Galaxy" at Harvard University's Chandra Photo Album
• Source page for 3C321 at Extragalactic.info
• An Atlas of DRAGNs: 3C 321 by the Jodrell Bank Centre for Astrophysics

v t e Constellation of Serpens
List of stars in Serpens Serpens in Chinese astronomy
Stars	Bayer α (Unukalhai) β (Chow) γ (Ainalhai) δ ε ζ η θ (Alya) ι κ (Gudja) λ μ ν ξ ο π ρ σ τ τ τ τ τ τ τ τ υ φ χ ψ ω Flamsteed 3 4 5 6 7 8 10 11 (A) 14 16 25 (A) 29 36 (b) 39 40 43 45 46 47 59 (d) 60 (c) 61 64 3 Her Variable R W X RT UZ VV VY WX AA AN AO AP AR AU BQ CT CV CW EG FH FI FK FL FQ FR LV LW LX MR MS MT MV MY NN NO NQ NW OO OU PS QV QX QY V382 V411 HR 5665 5690 5692 5706 5711 5740 5745 5783 5796 5831 5850 5859 5861 5874 5909 5913 5931 5992 6005 6011 6014 6016 6449 6496 6544 6562 6568 6600 6620 6666 6681 6755 6756 6757 6785 6830 6840 6843 6858 6890 6898 6928 6993 (e) 6999 7008 7048 7076 7144 HD 135061 135615 136027 136118 138085 142245 143436 145936 146740 157969 168112 168443 168746 (Alasia) 175541 (Kaveh) Other ADS 9544 AS 296 9 11 22 23 27 Gliese 701 Gliese 710 GJ 1224 GX 17+2 IRAS 18418-0440 MWC 297 MWC 922 PG 1510+234 PG 1605+072 PSR B1534+11 PSR J1719−1438 Ross 508 Serpens FIRS 1 Serpens SVS 20 Serpens X-1 W40 IRS 1A South
Exoplanets CoRoT-9b CoRoT-11b CoRoT-22b CoRoT-23b CoRoT-27b HD 168746 b (Onasilos) HD 175541 b (Kavian) ω Serpentis b
Star clusters	NGC NGC 6535 NGC 6539 NGC 6604 NGC 6605 Other IC 4756 Messier 5 Messier 16 Serpens OB2 Serpens South Palomar 5
Nebulae	Other Abell 41 Eagle Nebula L134 L183 L483 Serpens cloud Sh2-54 Westerhout 40 Red Square Nebula S68
Galaxies	NGC 5887 5910 5911 5913 5919 5920 5921 5926 5928 5931 5936 5937 5940 5942 5941 5944 5951 5953 5954 5952 5956 5955 5957 5960 5962 5964 5970 5972 5975 5977 5980 5983 5984 5988 5991 5990 5994 5996 5997 6003 6004 6008 6006 6007 6009 6012 6010 6014 6020 6017 6018 6021 6022 6023 6027 6027a 6027b 6027c 6027d 6027e 6029 6033 6037 6036 6051 6063 6065 6066 6070 6080 6100 6118 6172 Other 317 318 321 323.1 324 326 Arp 72 Arp 220 4C 11.50 CGCG 049-033 Hoag's Object IC 4537 IC 4588 IRAS 15107+0724 NRAO 530 PDS 456 PG 1553+113 PGC 54493 PKS 1546+027
Galaxy clusters Abell 2040 Abell 2052 Abell 2063 Abell 2107 AWM 4 MKW 3s Seyfert's Sextet
Astronomical events GRB 970111 GRB 050813 GRB 060418 GRB 060526 SN 2004dk
Category

• Serpens
• Interacting galaxies
• 3C objects
• Principal Galaxies Catalogue objects
• Active galaxies
• Astronomical objects discovered in 2007