# 3C 315

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Radio galaxy located in the constellation Boötes

3C 315 Radio galaxy 3C 315 taken with SDSS. Observation data (J2000.0 epoch) Constellation Boötes Right ascension 15h 13m 40.09s[1] Declination +26° 07′ 31.86″[1] Redshift 0.108300[1] Heliocentric radial velocity 32,468 km/s[1] Distance 1.647 Gly Apparent magnitude (B) 16.30 Characteristics Type Double galaxy NLRG[1] Other designations 4C +26.47, PKS 1511+26, PGC 54357, B2 1511+26, DA 377, NRAO 0472, CoNFIG 211, NVSS J151339+260733[1]

**3C 315** is a [Fanaroff-Riley class](/source/Fanaroff%E2%80%93Riley_classification) type 2[2] [radio galaxy](/source/Radio_galaxy) located in the [constellation](/source/Constellation) of [Boötes](/source/Bo%C3%B6tes). It has a [redshift](/source/Redshift) of (z) 0.108[1] and it was first discovered by astronomers in 1962.[3] This object is found to have a prototype X-shaped double [radio source](/source/Astronomical_radio_source) with its host, an [elliptical galaxy](/source/Elliptical_galaxy) being a member of a close double system.[4][5][6]

## Description

3C 315 is described having a flattened appearance and a dust obscured central nucleus.[7] Its nuclear [ellipticity](/source/Flattening) is found to decrease at a large [radius](/source/Radius) and has a central elongated structure which suggests an edge-on stellar disk.[8] It has an arc feature described as faint, which is located at a southern end of the galaxy. A large round [galaxy](/source/Galaxy) companion is seen in the direction of south.[9] The total [star forming](/source/Star_formation) [infrared](/source/Infrared) luminosity of 3C 315 is estimated to be (1.4 ± 0.61) × 1010 [L☉](/source/Solar_luminosity).[10]

The source of 3C 315 is found peculiar with a [banana](/source/Banana)-shaped radio structure.[8] When imaged, it has a central component[11] resolved into two individual components that are extended on each side of the central object. These components are however elongated and are perpendicular to the axis source. The flux density of both components at 5.0 [GHz](/source/Hertz) are estimated to be 1.3 ± 0.2 10−26 W m−2 [Hz](/source/Hertz)−1.[12] The radio core is found associated with a much brighter member galaxy in the system according to [Very Large Array](/source/Very_Large_Array) observations.[13] A weak hotspot is seen possibly located in the northeastern arm.[14] Evidence also showed the source is found heavily [polarized](/source/Polarization_(waves)) with the levels rising by 50% in the north point extension.[15]

Spectral index mapping using radio maps at 1.65 and 2.7 [GHz](/source/Hertz) [frequencies](/source/Frequency), have shown flat and steep [spectral index](/source/Spectral_index) regions located close to the core and at the tips of the [radio lobes](/source/Radio_galaxy) of 3C 315. Based on observations, both the northern and southern lobes have spectral indices of -1.46 and -1.26 at high frequencies, while most of the regions have a low-frequency measuring between -0.78 and -1.31. The wings located at [northeast](/source/Points_of_the_compass) and [southeast](/source/Points_of_the_compass) have measured spectra indices of -1.31 ± 0.03 and -1.27 ± 0.02 respectively.[5] A study published in 2024 suggested the X-shaped source of 3C 315 might be influenced through environmental factors, given the galaxy host's location inside a cluster.[16]

## References

1. ^ [***a***](#cite_ref-ned_1-0) [***b***](#cite_ref-ned_1-1) [***c***](#cite_ref-ned_1-2) [***d***](#cite_ref-ned_1-3) [***e***](#cite_ref-ned_1-4) [***f***](#cite_ref-ned_1-5) [***g***](#cite_ref-ned_1-6) ["NED search results for 3C 315"](https://ned.ipac.caltech.edu/byname?objname=3C+315&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1). *NASA/IPAC Extragalactic Database*. Retrieved 2025-06-22.

1. **[^](#cite_ref-2)** Owen, Frazer N.; Laing, Robert A. (May 1989). ["CCD surface photometry of radio galaxies -I. FR class I and II sources"](https://articles.adsabs.harvard.edu/pdf/1989MNRAS.238..357O). *Monthly Notices of the Royal Astronomical Society*. **238** (2): 357–378. [doi](/source/Doi_(identifier)):[10.1093/mnras/238.2.357](https://doi.org/10.1093%2Fmnras%2F238.2.357). [ISSN](/source/ISSN_(identifier)) [0035-8711](https://search.worldcat.org/issn/0035-8711).

1. **[^](#cite_ref-3)** Goldstein, Samuel J. (April 1962). ["Observations of sixty discrete sources at 1423 MC"](https://articles.adsabs.harvard.edu/pdf/1962AJ.....67..171G). *The Astronomical Journal*. **67**: 171. [Bibcode](/source/Bibcode_(identifier)):[1962AJ.....67..171G](https://ui.adsabs.harvard.edu/abs/1962AJ.....67..171G). [doi](/source/Doi_(identifier)):[10.1086/108688](https://doi.org/10.1086%2F108688). [ISSN](/source/ISSN_(identifier)) [0004-6256](https://search.worldcat.org/issn/0004-6256).

1. **[^](#cite_ref-4)** Nowakowski, Tomasz; Phys.org. ["Astronomers investigate X-shaped radio galaxy 3C 315"](https://phys.org/news/2025-03-astronomers-radio-galaxy-3c.html). *phys.org*. Retrieved 2025-06-22.

1. ^ [***a***](#cite_ref-:0_5-0) [***b***](#cite_ref-:0_5-1) Lal, D. V.; Rao, A. P. (2007-01-21). ["Giant Metrewave Radio Telescope observations of X-shaped radio sources"](https://doi.org/10.1111%2Fj.1365-2966.2006.11225.x). *Monthly Notices of the Royal Astronomical Society*. **374** (3): 1085–1102. [arXiv](/source/ArXiv_(identifier)):[astro-ph/0610678](https://arxiv.org/abs/astro-ph/0610678). [Bibcode](/source/Bibcode_(identifier)):[2007MNRAS.374.1085L](https://ui.adsabs.harvard.edu/abs/2007MNRAS.374.1085L). [doi](/source/Doi_(identifier)):[10.1111/j.1365-2966.2006.11225.x](https://doi.org/10.1111%2Fj.1365-2966.2006.11225.x). [ISSN](/source/ISSN_(identifier)) [0035-8711](https://search.worldcat.org/issn/0035-8711).

1. **[^](#cite_ref-6)** Miley, G. (1980). ["The structure of extended extragalactic radio sources"](https://articles.adsabs.harvard.edu/pdf/1980ARA%26A..18..165M). *Annual Review of Astronomy and Astrophysics*. **18**: 165–218. [Bibcode](/source/Bibcode_(identifier)):[1980ARA&A..18..165M](https://ui.adsabs.harvard.edu/abs/1980ARA&A..18..165M). [doi](/source/Doi_(identifier)):[10.1146/annurev.aa.18.090180.001121](https://doi.org/10.1146%2Fannurev.aa.18.090180.001121). [ISSN](/source/ISSN_(identifier)) [0066-4146](https://search.worldcat.org/issn/0066-4146).

1. **[^](#cite_ref-7)** de Koff, Sigrid; Best, Philip; A. Baum, Stefi; Sparks, William; Röttgering, Huub; Miley, George (July 2000). ["The Dust-Radio Connection in 3CR Radio Galaxies"](https://iopscience.iop.org/article/10.1086/313402/fulltext/). *The Astrophysical Journal Supplement Series*. **129** (1): 3–59. [Bibcode](/source/Bibcode_(identifier)):[2000ApJS..129...33D](https://ui.adsabs.harvard.edu/abs/2000ApJS..129...33D). [doi](/source/Doi_(identifier)):[10.1086/313402](https://doi.org/10.1086%2F313402).

1. ^ [***a***](#cite_ref-:1_8-0) [***b***](#cite_ref-:1_8-1) Capetti, A.; de Ruiter, H. R.; Fanti, R.; Morganti, R.; Parma, P.; Ulrich, M.-H. (October 2000). "The HST snapshot survey of the B2 sample of low luminosity radio-galaxies: a picture gallery". *Astronomy and Astrophysics*. **362**: 871–885. [arXiv](/source/ArXiv_(identifier)):[astro-ph/0009056](https://arxiv.org/abs/astro-ph/0009056). [Bibcode](/source/Bibcode_(identifier)):[2000A&A...362..871C](https://ui.adsabs.harvard.edu/abs/2000A&A...362..871C). [ISSN](/source/ISSN_(identifier)) [0004-6361](https://search.worldcat.org/issn/0004-6361).

1. **[^](#cite_ref-9)** Madrid, Juan P.; Chiaberge, Marco; Floyd, David; Sparks, William B.; Macchetto, Duccio; Miley, George K.; Axon, David; Capetti, Alessandro; O’Dea, Christopher P.; Baum, Stefi; Perlman, Eric; Quillen, Alice (June 2006). ["Hubble Space Telescope Near-Infrared Snapshot Survey of 3CR Radio Source Counterparts at Low Redshift"](https://doi.org/10.1086/504480). *The Astrophysical Journal Supplement Series*. **164** (2): 307–333. [arXiv](/source/ArXiv_(identifier)):[astro-ph/0603239](https://arxiv.org/abs/astro-ph/0603239). [Bibcode](/source/Bibcode_(identifier)):[2006ApJS..164..307M](https://ui.adsabs.harvard.edu/abs/2006ApJS..164..307M). [doi](/source/Doi_(identifier)):[10.1086/504480](https://doi.org/10.1086%2F504480). [ISSN](/source/ISSN_(identifier)) [0067-0049](https://search.worldcat.org/issn/0067-0049).

1. **[^](#cite_ref-10)** Shi, Yong; Ogle, Patrick; Rieke, George H.; Antonucci, Robert; Hines, Dean C.; Smith, Paul S.; Low, Frank J.; Bouwman, Jeroen; Willmer, Christopher (November 2007). "Aromatic Features in AGNs: Star-forming Infrared Luminosity Function of AGN Host Galaxies". *The Astrophysical Journal*. **669** (2): 841–861. [arXiv](/source/ArXiv_(identifier)):[0707.2806](https://arxiv.org/abs/0707.2806). [Bibcode](/source/Bibcode_(identifier)):[2007ApJ...669..841S](https://ui.adsabs.harvard.edu/abs/2007ApJ...669..841S). [doi](/source/Doi_(identifier)):[10.1086/521594](https://doi.org/10.1086%2F521594). [ISSN](/source/ISSN_(identifier)) [0004-637X](https://search.worldcat.org/issn/0004-637X).

1. **[^](#cite_ref-11)** Laing, R. A. (1981-02-01). ["Observations of compact radio sources with the 5-km telescope"](https://doi.org/10.1093%2Fmnras%2F194.2.301). *Monthly Notices of the Royal Astronomical Society*. **194** (2): 301–330. [Bibcode](/source/Bibcode_(identifier)):[1981MNRAS.194..301L](https://ui.adsabs.harvard.edu/abs/1981MNRAS.194..301L). [doi](/source/Doi_(identifier)):[10.1093/mnras/194.2.301](https://doi.org/10.1093%2Fmnras%2F194.2.301). [ISSN](/source/ISSN_(identifier)) [0035-8711](https://search.worldcat.org/issn/0035-8711).

1. **[^](#cite_ref-12)** Northover, K. J. E. (1976-11-01). ["Observations of the Radio Galaxies 3C 264 and 3C 315"](https://doi.org/10.1093%2Fmnras%2F177.2.307). *Monthly Notices of the Royal Astronomical Society*. **177** (2): 307–317. [Bibcode](/source/Bibcode_(identifier)):[1976MNRAS.177..307N](https://ui.adsabs.harvard.edu/abs/1976MNRAS.177..307N). [doi](/source/Doi_(identifier)):[10.1093/mnras/177.2.307](https://doi.org/10.1093%2Fmnras%2F177.2.307). [ISSN](/source/ISSN_(identifier)) [0035-8711](https://search.worldcat.org/issn/0035-8711).

1. **[^](#cite_ref-13)** Leahy, J. P.; Williams, A. G. (October 1984). ["The bridges of classical double radio sources"](https://articles.adsabs.harvard.edu/pdf/1984MNRAS.210..929L). *Monthly Notices of the Royal Astronomical Society*. **210** (4): 929–951. [Bibcode](/source/Bibcode_(identifier)):[1984MNRAS.210..929L](https://ui.adsabs.harvard.edu/abs/1984MNRAS.210..929L). [doi](/source/Doi_(identifier)):[10.1093/mnras/210.4.929](https://doi.org/10.1093%2Fmnras%2F210.4.929). [ISSN](/source/ISSN_(identifier)) [0035-8711](https://search.worldcat.org/issn/0035-8711).

1. **[^](#cite_ref-14)** Alexander, P.; Leahy, J. P. (March 1987). ["Ageing and speeds in a representative sample of 21 classical double radio sources"](https://doi.org/10.1093%2Fmnras%2F225.1.1). *Monthly Notices of the Royal Astronomical Society*. **225** (1): 1–26. [Bibcode](/source/Bibcode_(identifier)):[1987MNRAS.225....1A](https://ui.adsabs.harvard.edu/abs/1987MNRAS.225....1A). [doi](/source/Doi_(identifier)):[10.1093/mnras/225.1.1](https://doi.org/10.1093%2Fmnras%2F225.1.1). [ISSN](/source/ISSN_(identifier)) [0035-8711](https://search.worldcat.org/issn/0035-8711).

1. **[^](#cite_ref-15)** Hogbom, J. A. (May 1979). ["A study of the radio galaxies 3C 111, 192, 219, 223, 315 and 452"](https://articles.adsabs.harvard.edu/pdf/1979A%26AS...36..173H). *Astronomy and Astrophysics Supplement Series*. **36**: 173–192. [ISSN](/source/ISSN_(identifier)) [0365-0138](https://search.worldcat.org/issn/0365-0138).

1. **[^](#cite_ref-16)** Borka Jovanović, V.; Borka, D.; Jovanović, P. (2024-11-26). ["X-shaped radio galaxy 3C 315"](https://www.aob.rs/images/doi/konferencije/2024/PDF/2024-imdampp/30-39.pdf) (PDF). *BOOK OF ABSTRACTS AND CONTRIBUTED PAPERS - International Meeting on Data for Atomic and Molecular Processes in Plasmas: Advances in Standards and Modelling*. Belgrade, Serbia: Institute of Physics Belgrade. pp. 30–39. [doi](/source/Doi_(identifier)):[10.69646/aob241108](https://doi.org/10.69646%2Faob241108). [ISBN](/source/ISBN_(identifier)) [978-86-82441-69-4](https://en.wikipedia.org/wiki/Special:BookSources/978-86-82441-69-4).

## External links

- [3C 315 on SIMBAD](http://simbad.u-strasbg.fr/simbad/sim-id?Ident=4C%2026.47)

v t e Constellation of Boötes Boötes in Chinese astronomy Boötes Void List of stars in Boötes Stars Bayer α (Arcturus) β (Nekkar) γ (Seginus) δ (Qigong) ε (Izar, Pulcherrima) ζ η (Muphrid) θ ι κ λ (Xuange) μ1 (Alkalurops) μ2 ν1 ν2 ξ ο π ρ (Kalasungsang) σ (Genghe) τ (Tepiamenit) υ φ χ ψ ω Flamsteed 1 2 3 6 (e) 7 9 10 11 12 (d) 13 14 15 18 20 22 (f) 24 (g) 26 31 32 33 34 (Alrumh) 38 (Merga) 39 40 44 (Quadrans) 45 (c) 46 (b) 47 (k) 50 Variable R S T RX ZZ AB BL BP BX BY CE CH CI CN CP CR CX CY (101 Vir) DE EK HN HP HD 118508 118889 122563 125040 125351 (A) 125658 126128 126129 126141 126200 126271 127304 127334 127726 128093 128198 129132 129357 130084 130603 130917 131040 131473 131496 (Arcalís) 132029 132406 132563 134064 134335 135438 135530 135944 141399 Other 2MASS J15031961+2525196 CFBDSIR 1458+10 Gliese 526 HAT-P-4 LHS 2924 PSR J1544+4937 SDSS J1416+1348 SDSS J1433+1011 TVLM 513-46546 WASP-14 WD 1425+540 ZTF J153932.16+502738.8 Exoplanets HAT-P-4b HD 128311 b c HD 132406 b HD 136418 b (Awasis) τ Boötis b TOI-1853 b WASP-14b Star clusters NGC 5466 Galaxies NGC 5008 5248 5251 5416 5490 5500 5504 5508 5514 5523 5529 5532 5533 5535 5539 5541 5544 5545 5548 5557 5559 5562 5579 5582 5591 5601 5603 5609 5613 5614 5615 5624 5629 5630 5641 5642 5653 5665 5676 5681 5682 5683 5698 5714 5722 5752 5753 5754 5755 5772 5778 5784 5790 5820 5821 5829 5837 5857 5875 5876 5886 5888 5896 5929 5930 5966 Numbered I II III Other 3C 295 3C 299 3C 300 3C 303 3C 315 4C 19.44 4C +26.42 7C 1354+2552 Abell 2009 BCG Arp 302 B2 1420+32 B2 1441+26 CEERS-2112 CEERS-93316 CEERS2-588 CLASS B1359+154 Cloverleaf quasar DDO 190 EGS-zs8-1 EGS-z11-R0 EGSY8p7 H1426+428 IC 4397 IC 4461 IC 4462 IC 4481 IC 4516 IRAS 13349+2438 IRAS 14394+5332 IRAS 15206+3342 LEDA 2108986 MACS 1423-z7p64 MACS J1447.4+0827 BCG Maisie's Galaxy Markarian 463 Markarian 471 Markarian 478 MS 1455.0+2232 BCG MS 1512-cB58 NVSS J141343+433945 OQ 172 OQ 530 PG 1411+442 PG 1543+489 PGC 93125 PGC 1470080 PKS 1345+125 PKS 1413+135 QSO B1422+202 RBS 1467 RGZ J145001.5+144747 RGZ J145039.8+441829 SBS 1415+437 SDSS J135646.10+102609.0 SDSS J1430+2303 Teacup galaxy UGC 8669 UGC 9128 UGC 9425 UGC 9684 UGC 9796 ULAS J1342+0928 VV 191 Galaxy clusters Abell 1795 Abell 1991 BoRG-58 IDCS J1426.5+3508 Astronomical events GRB 990123 GRB 080319B SCP 06F6 SN 2003fg SN 2005bc SN 2020tlf Category

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Adapted from the Wikipedia article [3C 315](https://en.wikipedia.org/wiki/3C_315) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/3C_315?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.