Galaxy in the constellation Leo
NGC 3758 Observation data (J2000 epoch ) Constellation Leo Right ascension 11h 6m 29.10s Declination 21° 35′ 46.0″ Redshift 0.029771 Heliocentric radial velocity 8,909 km/s Distance 447Mly (137Mpc ) Apparent magnitude (V)14.3 Characteristics Type Sab pec, Sy1 Size 70,000 ly Notable features Rare example of binaryactive galactic nucleus ,seyfert galaxy Other designations PGC 35905,CGCG 126-110, KUG 1133+218,MCG +04-27-073,IRAS 11338+2152, REIZ 1338, PGC 165579, AKRAI J1136286+213546, RBS 1003,NVSS J113629+213549, SFRS 149,Mrk 739, 1RXS J113629.4+213552,LEDA 35905
NGC 3758 known as theOwl Galaxy ,[ 1] [ 2] spiral galaxy in the constellation ofLeo .[ 3] [ 4] light-years from theSolar System and an approximatediameter of 70,000 light-years.[ 5] Ralph Copeland on March 18, 1874, but also independently discovered byEdouard Stephan ten years later.[ 1]
MUSE image of NGC 3758, showing [O III] as green (EELR) andH-alpha as red (star-forming regions ) NGC 3758 is classified as aSeyfert 1 type galaxy.[ 5] [ 6] Markarian galaxy (designated Mrk 739), because compared to other galaxies its nucleus emits excessive amounts ofultraviolet rays .[ 7] active galactic nucleus galaxy, a rare example of a galaxy merger.[ 8] [ 9]
Sloan Digital Sky Survey image of NGC 3758. Notice the two luminous cores.NGC 3758 is made up of two separate galaxies, NGC 3758W[ 10] [ 11] supermassive black hole , which is only 11,000 light-years apart and gorging oninfalling gas .[ 12] gas is sent spiraling inward, which it becomes hot and radiatesenergy .[ 9] gravitationally bound together and such, theirorbits will dynamically decay until their nucleimerge in which the process takes a few billion years.[ 13]
The galaxy has an appearance of a friendly-looking object complete with two cores as theeyes and a swirling grin.[ 12] stars intohypervelocity stars and catapult them out of their host galaxy.[ 14]
NGC 3758 contains anextended emission-line region (EELR), which was discovered in theGalaxy Zoo project. This EELR could originate from both AGN or from just one. Detailedoxygen [O III] imaging could reveal which AGN is responsible for this EELR.[ 15] MUSE instrument is capable of such observations and MUSE did observe NGC 3758 in 2016,[ 16]
^a b "New General Catalog Objects: NGC 3750 - 3799" .cseligman.com . Retrieved2024-04-30 .^ "HyperLeda -object description" .atlas.obs-hp.fr . Retrieved2024-04-30 .^ Ford, Dominic."NGC3758 (Galaxy)" .In-The-Sky.org . Retrieved2024-04-30 . ^ "Revised NGC Data for NGC 3758" .spider.seds.org . Retrieved2024-04-30 .^a b "Your NED Search Results" .ned.ipac.caltech.edu . Retrieved2024-04-30 .^ Osterbrock, Donald E.; Shaw, Richard A. (1988)."1988ApJ...327...89O Page 89" .The Astrophysical Journal .327 : 89.Bibcode :1988ApJ...327...89O .doi :10.1086/166172 . Retrieved2024-04-30 . ^ "Revised Data from NGC/IC Catalogue by Wolfgang Steinickle from NGC 3700 to 3799" .astrovalleyfield.ca . Retrieved2024-04-30 .^ "Object of the Week, April 1 2018----NGC 3758 "The Smiley Face Galaxy" .www.deepskyforum.com . Retrieved2024-04-30 .^a b Wiessinger, Scott (2011-06-10)."NASA Scientific Visualization Studio | Nearby Galaxy Boasts Two Monster Black Holes, Both Active" .NASA Scientific Visualization Studio . Retrieved2024-04-30 . ^ "NED Search Results for NGC 3758W" .ned.ipac.caltech.edu . Retrieved2024-04-30 .^ "NED Search Results for NGC 3758E" .ned.ipac.caltech.edu . Retrieved2024-04-30 .^a b Lazaro, Enrico de (2021-04-27)."Astronomers Observe Nearby Galaxy with Two Bright Cores | Sci.News" .Sci.News: Breaking Science News . Retrieved2024-04-30 . ^ Mezcua, M.; Lobanov, A. P.; Mediavilla, E.; Karouzos, M. (2014-02-26)."Photometric Decomposition of Mergers in Disk Galaxies" .The Astrophysical Journal .784 (1): 16.arXiv :1401.5920 Bibcode :2014ApJ...784...16M .doi :10.1088/0004-637x/784/1/16 .ISSN 0004-637X . ^ Woo, Marcus."The Fastest Stars in the Universe May Approach Light Speed" .Wired .ISSN 1059-1028 . Retrieved2024-04-30 . ^ Keel, William C.; Chojnowski, S. Drew; Bennert, Vardha N.; Schawinski, Kevin; Lintott, Chris J.; Lynn, Stuart; Pancoast, Anna; Harris, Chelsea; Nierenberg, A. M.; Sonnenfeld, Alessandro; Proctor, Richard (2012-02-01)."The Galaxy Zoo survey for giant AGN-ionized clouds: past and present black hole accretion events" .Monthly Notices of the Royal Astronomical Society .420 (1):878– 900.arXiv :1110.6921 Bibcode :2012MNRAS.420..878K .doi :10.1111/j.1365-2966.2011.20101.x ISSN 0035-8711 . ^ "ESO Dataset - ADP.2016-07-26T07:11:27.413" .archive.eso.org . Retrieved2024-05-01 .
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