NGC 4457 has a broad oval zone containing an inner spiral which is defined mainly by two fairly open arms. There is a well-defined outer ring that is completely detached from the inner regions of the galaxy.[14]
NGC 4457 has a severely reduced amount ofstar-formation in its disk while its inner regions have a normalized rate of massive star formation.[14] This may have been caused by a recent interaction of thegas in the galaxy with thegas in the surroundingVirgo Cluster,[15] causing the gas to be stripped away in an effect known asram-pressure stripping.[16]
^TERASHIMA, YUICHI; HO, LUIS C.; PTAK, ANDREW F.; MUSHOTZKY, RICHARD F.; SERLEMITSOS, PETER J.; YAQOOB, TAHIR; KUNIEDA, HIDEYO (20 April 2000). "ASCA Observations of "Type 2" LINERs: Evidence for a Stellar Source of Ionization".The Astrophysical Journal.533 (2):729–743.arXiv:astro-ph/9911340.Bibcode:2000ApJ...533..729T.doi:10.1086/308690.S2CID14130773.
^Vollmer, B.; Soida, M.; Beck, R.; Chung, A.; Urbanik, M.; Chyzy, K.T.; Otmianowska-Mazur, K.; Kenney, J.D.P. (4 April 2013). "Large-scale radio continuum properties of 19 Virgo cluster galaxies⋆ The influence of tidal interactions, ram pressure stripping, and accreting gas envelopes".Astronomy & Astrophysics.553: 38.arXiv:1304.1279.Bibcode:2013A&A...553A.116V.doi:10.1051/0004-6361/201321163.S2CID119190841.
^Binggeli, B.; Sandage, A.; Tammann, G. A. (September 1985). "Studies of the Virgo Cluster. II - A catalog of 2096 galaxies in the Virgo Cluster area. V - Luminosity functions of Virgo Cluster galaxies".The Astronomical Journal.90: 1681.Bibcode:1985AJ.....90.1681B.doi:10.1086/113874.ISSN0004-6256.
