NGC 3507 is a barred spiral galaxy in the constellation Leo. The galaxy lies about 50 million light years away from Earth, which means, given its apparent dimensions, that NGC 3507 is approximately 45,000 light years across.[1] It was discovered by William Herschel on March 14, 1784.[3]

Characteristics

The galaxy features a prominent bar and two spiral arms emerge from the end of the bar at a right angle. It is considered to be a grand design galaxy, as the two arms are well defined. The arms are bright for about half a revolution and can be traced for nearly a full revolution before fading. The Southeast arm wraps more tightly than the northwest one.[4] The inner regions feature knots, which have been identified as young star groupings. About 90 have been detected, with a mean diameter of 121 pc. The galaxy lacks high velocity clouds, indicating low star formation rate.[5] The star formation rate is estimated to be 2.0±0.4 M☉. The hydrogen distribution is clumpy and there is a low HI signal from the central region of the galaxy.[6]

The nucleus of the galaxy has been found to be active and has been categorised as a LINER. However its active nucleus status has been questioned, as the ultraviolet radiation and optical spectrum are consistent with the presence of a compact young star cluster in the nucleus[7] and the X-ray emission doesn't follow the power law indicating it could be the result of many supernova remnants creating a superbubble.[8][9] On the other hand, OIII/ Hα and NII/ Hα ratios are in line with other active galaxies.[8] A radio counterpart of the core which extends slightly to the south has been observed, indicating the galaxy may have a jet.[8]

The galaxy is seen nearly face-on, at an inclination of 17°.[6]

Nearby galaxies

NGC 3507 forms a pair with NGC 3501, which lies 12.7 arcminutes away.[10] Garcia puts the galaxy in the same group as UGC 6095, UGC 617, UGC 6112, and UGC 6181.[11] On the other hand, Makarov considers NGC 3507 to be a member of the NGC 3607 Group, along with NGC 3443, NGC 3447, NGC 3455, NGC 3457, NGC 3501, NGC 3599, NGC 3605, NGC 3607, and NGC 3608.[12]

References

  1. ^ a b c d e f g h i j "Results for object NGC 3507". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 15 February 2025.
  2. ^ "Revised NGC Data for NGC 3507". spider.seds.org. Retrieved 30 March 2024.
  3. ^ Seligman, Courtney. "NGC 3507 (= PGC 33390)". Celestial Atlas. Retrieved 19 November 2018.
  4. ^ Eskridge, Paul B.; Frogel, Jay A.; Pogge, Richard W.; Quillen, Alice C.; Berlind, Andreas A.; Davies, Roger L.; DePoy, D. L.; Gilbert, Karoline M.; Houdashelt, Mark L.; Kuchinski, Leslie E.; Ramirez, Solange V.; Sellgren, K.; Stutz, Amelia; Terndrup, Donald M.; Tiede, Glenn P. (November 2002). "Near-Infrared and Optical Morphology of Spiral Galaxies". The Astrophysical Journal Supplement Series. 143 (1): 73–111. arXiv:astro-ph/0206320. Bibcode:2002ApJS..143...73E. doi:10.1086/342340.
  5. ^ Vicari, A.; Battinelli, P.; Capuzzo–Dolcetta, R.; Wyder, T. K.; Arrabito, G. (March 2002). "Large-scale star formation in galaxies: II. The spirals NGC 3377A, NGC 3507 and NGC 4394. Young star groupings in spirals". Astronomy & Astrophysics. 384 (1): 24–32. Bibcode:2002A&A...384...24V. doi:10.1051/0004-6361:20011803.
  6. ^ a b Richards, Emily E; van Zee, L; Barnes, K L; Staudaher, S; Dale, D A; Braun, T T; Wavle, D C; Dalcanton, J J; Bullock, J S; Chandar, R (1 June 2018). "Baryonic distributions in galaxy dark matter haloes – II. Final results". Monthly Notices of the Royal Astronomical Society. 476 (4): 5127–5188. doi:10.1093/mnras/sty514.
  7. ^ Delgado, Rosa M. Gonzalez; Fernandes, Roberto Cid; Perez, Enrique; Martins, Lucimara P.; Storchi-Bergmann, Thaisa; Schmitt, Henrique; Heckman, Timothy; Leitherer, Claus (10 April 2004). "The Stellar Populations of Low-Luminosity Active Galactic Nuclei. II. Space Telescope Imaging Spectrograph Observations". The Astrophysical Journal. 605 (1): 127–143. arXiv:astro-ph/0401414. Bibcode:2004ApJ...605..127G. doi:10.1086/382216.
  8. ^ a b c Koliopanos, Filippos; Ciambur, Bogdan C.; Graham, Alister W.; Webb, Natalie A.; Coriat, Mickael; Mutlu-Pakdil, Burçin; Davis, Benjamin L.; Godet, Olivier; Barret, Didier; Seigar, Marc S. (May 2017). "Searching for intermediate-mass black holes in galaxies with low-luminosity AGN: a multiple-method approach". Astronomy & Astrophysics. 601: A20. arXiv:1612.06794. Bibcode:2017A&A...601A..20K. doi:10.1051/0004-6361/201630061.
  9. ^ Flohic, Helene M. L. G.; Eracleous, Michael; Chartas, George; Shields, Joseph C.; Moran, Edward C. (10 August 2006). "The Central Engines of 19 LINERs as Viewed by Chandra". The Astrophysical Journal. 647 (1): 140–160. arXiv:astro-ph/0604487. Bibcode:2006ApJ...647..140F. doi:10.1086/505296.
  10. ^ Nilson, P. (1973) Uppsala General Catalogue of Galaxies, Acta Universitatis Upsalienis, Nova Regiae Societatis Upsaliensis, Series V: A Vol. 1
  11. ^ Garcia, A. M. (1 July 1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G. ISSN 0365-0138.
  12. ^ Makarov, Dmitry; Karachentsev, Igor (21 April 2011). "Galaxy groups and clouds in the local (z~ 0.01) Universe". Monthly Notices of the Royal Astronomical Society. 412 (4): 2498–2520. arXiv:1011.6277. Bibcode:2011MNRAS.412.2498M. doi:10.1111/j.1365-2966.2010.18071.x. S2CID 119194025. Retrieved 1 February 2025.
Allikas: https://en.wikipedia.org/wiki/NGC_3507
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