NGC 1396
| NGC1396 | |
|---|---|
 DSS image of NGC 1396.NGC 1399can be seen to the left of NGC 1396 | |
| Observation data (J2000epoch) | |
| Constellation | Fornax (constellation) |
| Right ascension | 03h38m06.5s[1] |
| Declination | −35° 26′ 24″[1] |
| Redshift | 0.002695[1] |
| Heliocentric radial velocity | 808 km/s[1] |
| Distance | 62.05Mly(19.025Mpc)[1] |
| Grouporcluster | Fornax Cluster |
| Apparent magnitude(V) | 14.82[1] |
| Absolute magnitude(V) | −16.3[2] |
| Characteristics | |
| Type | d:E6,N[2] |
| Mass | 5.6×108(Stellar mass)/1×109(Total Mass)[3]M☉ |
| Size | ~23,900ly(7.33kpc) (estimated)[1] |
| Apparent size(V) | 1.0 x 0.9[1] |
| Other designations | |
| ESO 358-? 041, FCC 202, PGC 013398[1] | |
NGC 1396is adwarf elliptical galaxy[4]located 61 million light years away[5]in the constellation ofFornax.The galaxy was discovered by astronomerJulius Schmidton January 19, 1865,[6]and is a member of theFornax Cluster.[7]Despite the fact that the galaxy PGC 13398 is most commonly identified as NGC 1396, there is uncertainty in its identification.[8][9][10]
NGC 1396 is asatellite galaxyofNGC 1399.[11]
232 knownglobular clustershave been observed surrounding NGC 1396,[2]along with a centralnuclear star clusterwith an estimated mass of 9.6 × 106M☉.[12]
NGC 1396 has ametallicityof [Fe/H]∼ -0.4, with unusually overabundant values of [Ca/Fe] ∼+ 0.1, and underabundant sodium, with [Na/Fe] values around -0.1, while [Mg/Fe] is overabundant throughout the galaxy, increasing at a greater distance from the center of the galaxy. These abundance ratios compared with galaxies in theLocal Group,show that the chemical enrichment history of theinterstellar mediumof NGC 1396 is similar to thegalactic discof theMilky Way.This implies that NGC 1396 originated as a progenitor galaxy the size of theLarge Magellanic Cloudthat lost its gas as it fell though the Fornax Cluster.[4]
See also
[edit]External links
[edit]- NGC 1396 onWikiSky:DSS2,SDSS,GALEX,IRAS,Hydrogen α,X-Ray,Astrophoto,Sky Map,Articles and images
References
[edit]- ^abcdefghi"NASA/IPAC Extragalactic Database".Results for NGC 1396.Retrieved2024-07-05.
- ^abcLee, Sang-Yoon; Chung, Chul; Yoon, Suk-Jin (2019-01-01)."Nonlinear Color-Metallicity Relations of Globular Clusters. VIII. Reproducing Color Distributions of Individual Globular Cluster Systems in the Virgo and Fornax Galaxy Clusters".The Astrophysical Journal Supplement Series.240(1): 2.arXiv:1811.00018.Bibcode:2019ApJS..240....2L.doi:10.3847/1538-4365/aaecd4.ISSN0067-0049.
- ^Eftekhari, F. Sara; Peletier, Reynier F.; Scott, Nicholas; Mieske, Steffen; Bland-Hawthorn, Joss; Bryant, Julia J.; Cantiello, Michele; Croom, Scott M.; Drinkwater, Michael J.; Falcón-Barroso, Jésus; Hilker, Michael; Iodice, Enrichetta; Napolitano, Nicola R.; Spavone, Marilena; Valentijn, Edwin A. (2022-12-01)."The SAMI-Fornax Dwarfs Survey - II. The Stellar Mass Fundamental Plane and the dark matter fraction of dwarf galaxies".Monthly Notices of the Royal Astronomical Society.517(4): 4714–4735.arXiv:2209.05525.Bibcode:2022MNRAS.517.4714E.doi:10.1093/mnras/stac2606.ISSN0035-8711.
- ^abMentz, J. J.; La Barbera, F.; Peletier, R. F.; Falcón-Barroso, J.; Lisker, T.; van de Ven, G.; Loubser, S. I.; Hilker, M.; Sánchez-Janssen, R.; Napolitano, N.; Cantiello, M.; Capaccioli, M.; Norris, M.; Paolillo, M.; Smith, R. (2016-12-01)."Abundance ratios and IMF slopes in the dwarf elliptical galaxy NGC 1396 with MUSE".Monthly Notices of the Royal Astronomical Society.463(3): 2819–2838.arXiv:1608.07042.Bibcode:2016MNRAS.463.2819M.doi:10.1093/mnras/stw2129.ISSN0035-8711.
- ^"Your NED Search Results".ned.ipac.caltech.edu.Retrieved2024-07-06.
- ^"New General Catalog Objects: NGC 1350 - 1399".cseligman.Retrieved2024-07-03.
- ^Ferguson, Henry C. (1989-08-01)."Population Studies in Groups and Clusters of Galaxies. II. A Catalog of Galaxies in the Central 3.5 Degrees of the Fornax Cluster".The Astronomical Journal.98:367.Bibcode:1989AJ.....98..367F.doi:10.1086/115152.ISSN0004-6256.
- ^"New General Catalog Objects: NGC 1350 - 1399".cseligman.Retrieved2024-07-06.
- ^Gottlieb, Steve."Astronomy-Mall".Astronomy-Mall.Retrieved2024-07-05.
- ^"Notes on the NGC objects, particularly those missing, misidentified, or otherwise unusual (ngcnotes.all)".Historically-aware NGC/IC Positions and Notes.Retrieved2024-07-05.
- ^Liu, Yiqing; Peng, Eric W.; Jordán, Andrés; Blakeslee, John P.; Côté, Patrick; Ferrarese, Laura; Puzia, Thomas H. (2019-04-01)."The ACS Fornax Cluster Survey. III. Globular Cluster Specific Frequencies of Early-type Galaxies".The Astrophysical Journal.875(2): 156.arXiv:1904.06909.Bibcode:2019ApJ...875..156L.doi:10.3847/1538-4357/ab12d9.ISSN0004-637X.
- ^Johnston, Evelyn J.; Puzia, Thomas H.; D'Ago, Giuseppe; Eigenthaler, Paul; Galaz, Gaspar; Häußler, Boris; Mora, Marcelo D.; Ordenes-Briceño, Yasna; Rong, Yu; Spengler, Chelsea; Vogt, Frédéric; Côté, Patrick; Grebel, Eva K.; Hilker, Michael; Mieske, Steffen (2020-06-01)."The Next Generation Fornax Survey (NGFS): VII. A MUSE view of the nuclear star clusters in Fornax dwarf galaxies".Monthly Notices of the Royal Astronomical Society.495(2): 2247–2264.arXiv:2005.01532.Bibcode:2020MNRAS.495.2247J.doi:10.1093/mnras/staa1261.ISSN0035-8711.