It hosts alow-ionization nuclear emission-line region (LINER).[4] In the nucleus there is asupermassive black hole with an estimated mass of 10-39 millionM☉, based on the intrinsic velocity dispersion as measured by theHubble Space Telescope.[5] Although the galaxy was reported to have a strongbar visible ininfrared images, there has been no indication of a bar in further observations.[6] Itsspiral disk is of type III and there is a dust structure which is more prominent to the east.[7] The galaxy features two ring structures, with diameter 1.62 and 2.42 arcminutes.[8] Thespiral arms are tightly wound and form an inner pseudoring and they continue for one revolution outside the ring. The outer arms are very patchy and filamentary.[9]
Onesupernova has been observed in NGC 3675: SN 1984R (type unknown, mag. 13) was discovered byKaoru Ikeya on 2 December 1984.[10][11]
^Beifiori, A.; Sarzi, M.; Corsini, E. M.; Bontà, E. Dalla; Pizzella, A.; Coccato, L.; Bertola, F. (10 February 2009). "Upper Limits on the Masses of 105 Supermassive Black Holes from Hubble Space Telescope/Space Telescope Imaging Spectrograph Archival Data".The Astrophysical Journal.692 (1):856–868.arXiv:0809.5103.Bibcode:2009ApJ...692..856B.doi:10.1088/0004-637X/692/1/856.S2CID54903233.
^Comerón, S.; Salo, H.; Laurikainen, E.; Knapen, J. H.; Buta, R. J.; Herrera-Endoqui, M.; Laine, J.; Holwerda, B. W.; Sheth, K.; Regan, M. W.; Hinz, J. L.; Muñoz-Mateos, J. C.; Gil de Paz, A.; Menéndez-Delmestre, K.; Seibert, M.; Mizusawa, T.; Kim, T.; Erroz-Ferrer, S.; Gadotti, D. A.;Athanassoula, E.; Bosma, A.; Ho, L. C. (19 February 2014). "ARRAKIS: atlas of resonance rings as known in the S4G".Astronomy & Astrophysics.562: A121.arXiv:1312.0866.Bibcode:2014A&A...562A.121C.doi:10.1051/0004-6361/201321633.S2CID119295831.
^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.S2CID15491635.
^Kosai, H.; Ikeya, K.; Shibasaki, H. (1984). "Possible Supernova in NGC 3675".International Astronomical Union Circular (4021): 1.Bibcode:1984IAUC.4021....1K.
^"SN1984R".Transient Name Server.IAU. Retrieved5 December 2024.
