NGC 891 - Misplaced Pages

(Redirected from NGC891) Galaxy in the constellation Andromeda

NGC 891
NGC 891
Observation data (J2000 epoch)
Constellation	Andromeda
Right ascension	02 22 33.4
Declination	+42° 20′ 57″
Redshift	528 ± 4 km/s
Distance	27.3 ± 1.8 Mly (8.4 ± 0.5 Mpc)
Apparent magnitude (V)	10.8
Characteristics
Type	SA(s)b?
Apparent size (V)	13′.5 × 2′.5
Other designations
UGC 1831, PGC 9031, Caldwell 23

NGC 891 (also known as Caldwell 23, the Silver Sliver Galaxy, and the Outer Limits Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus.

The object is visible in small to moderate size telescopes as a faint elongated smear of light with a dust lane visible in larger apertures.

In 1999, the Hubble Space Telescope imaged NGC 891 in infrared.

In 2005, due to its attractiveness and scientific interest, NGC 891 was selected to be the first light image of the Large Binocular Telescope. In 2012, it was again used as a first light image of the Lowell Discovery Telescope with the Large Monolithic Imager.

Supernova SN 1986J was discovered on August 21, 1986 at apparent magnitude 14.

Properties

NGC 891 looks as the Milky Way would look like when viewed edge-on (some astronomers have even noted how similar to NGC 891 our galaxy looks as seen from the Southern Hemisphere) and, in fact, both galaxies are considered very similar in terms of luminosity and size; studies of the dynamics of its molecular hydrogen have also proven the likely presence of a central bar. Despite this, recent high-resolution images of its dusty disk show unusual filamentary patterns. These patterns are extending into the halo of the galaxy, away from its galactic disk. Scientists presume that supernova explosions caused this interstellar dust to be thrown out of the galactic disk toward the halo.

It may also be possible that the light pressure from surrounding stars causes this phenomenon.

The galaxy is a member of a small group of galaxies, sometimes called the NGC 1023 Group. Other galaxies in this group are the NGCs 925, 949, 959, 1003, 1023, and 1058, and the UGCs 1807, 1865 (DDO 19), 2014 (DDO 22), 2023 (DDO 25), 2034 (DDO 24), and 2259. Its outskirts are populated by multiple low-surface brightness, coherent, and vast substructures, like giant streams that loop around the parent galaxy up to distances of approximately 50 kpc. The bulge and the disk are surrounded by a flat and thick cocoon-like stellar structure. These have vertical and radial distances of up to 15 kpc and 40 kpc, respectively, and are interpreted as the remnant of a satellite galaxy disrupted and in the process of being absorbed by NGC 891.

In popular culture

NGC 891 appears alongside M67, the Sombrero Galaxy, the Pinwheel Galaxy, NGC 5128, NGC 1300, M81, and the Andromeda Galaxy in the end credits of the Outer Limits TV series, which is why it is occasionally called the Outer Limits Galaxy.

The soundtrack of the 1974 film Dark Star by John Carpenter features a muzak-style instrumental piece called "When Twilight Falls on NGC 891".

The first solo album by Edgar Froese, Aqua, also released in 1974, contained a track called "NGC 891". Side 2 of the album, which included this track, was unusual in having been a rare example of a commercially issued piece of music recorded using the artificial head system.

References

^ "NASA/IPAC Extragalactic Database". Results for NGC 891. Retrieved 2006-11-18.
J. L. Tonry; A. Dressler; J. P. Blakeslee; E. A. Ajhar; et al. (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal. 546 (2): 681–693. arXiv:astro-ph/0011223. Bibcode:2001ApJ...546..681T. doi:10.1086/318301. S2CID 17628238.
Seligman, Courtney. "NGC 891". Celestial Atlas. Retrieved 8 November 2018.
Ho, Luis C.; Filippenko, Alexei V.; Sargent, Wallace L. W. (October 1997). "A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies". Astrophysical Journal Supplement. 112 (2): 315–390. arXiv:astro-ph/9704107. Bibcode:1997ApJS..112..315H. doi:10.1086/313041. S2CID 17086638.
"First Light Information". Large Binocular Telescope Observatory. 2008. Archived from the original on 9 July 2013. Retrieved 10 January 2015.
"LBT "First Light" Image of NGC 891". Archived from the original on 2015-02-28. Retrieved 2015-02-28.
Vitron, Tom. "Lowell's NSF-funded Large Monolithic Imager sees first light". Lowell Observatory. Archived from the original on 2 November 2012. Retrieved 27 September 2012.
"List of Supernovae". Harvard-Smithsonian Center for Astrophysics (IAU). Retrieved 2010-05-19.
The Milky Way in relation to other galaxies
Karachentsev, Igor D.; Karachentseva, Valentina E.; Huchtmeier, Walter K.; Makarov, Dmitry I. (2003). "A Catalog of Neighboring Galaxies". The Astronomical Journal. 127 (4): 2031–2068. Bibcode:2004AJ....127.2031K. doi:10.1086/382905.
Garcia-Burillo, S.; Guelin, M. (1995). "The distorted kinematics of molecular gas in the center of NGC 891". Astronomy & Astrophysics. 299: 657. Bibcode:1995A&A...299..657G.
Nemiroff, R.; Bonnell, J., eds. (3 July 2002). "Interstellar Dust Bunnies of NGC 891". Astronomy Picture of the Day. NASA. Retrieved 2011-01-29.
"NGC 891 in Andromeda". Wilhelm-Förster Observatory, Berlin. 2001. Retrieved 2011-01-29.
"NGC 891". SEDS. 2009. Retrieved 2011-01-29.
Mouhcine; Ibata; Rejkuba (2010). "A panoramic view of the Milky Way analogue NGC 891". The Astrophysical Journal. 714 (1): L12–L15. arXiv:1002.0461. Bibcode:2010ApJ...714L..12M. doi:10.1088/2041-8205/714/1/L12. S2CID 119245924.
Shih, Hsin-Yi; Méndez, Roberto H. (2010). "Possible Stellar Streams in the Edge-on Spiral NGC 891 Discovered from Kinematics of Planetary Nebulae". The Astrophysical Journal Letters. 725 (1): L97–L100. Bibcode:2010ApJ...725L..97S. doi:10.1088/2041-8205/725/1/L97.
Bakich, Michael E. "The Outer Limits universe". Astronomy.com. Retrieved 21 February 2021.
"NGC891 - The Outer Limits Galaxy | Barry Etter". Sky & Telescope. Retrieved 21 February 2021.
""Please Stand By" - The ORIGINAL opening titles to "The Outer Limits!!"". Youtube. 25 October 2011. Retrieved 21 February 2021.
"GB The Outer Limits end credits with music". Youtube. 22 March 2019. Retrieved 21 February 2021.
The Cinema of John Carpenter. Wallflower Press. 2004. p. 53. ISBN 978-1-904764-14-4.

External links

Media related to NGC 891 at Wikimedia Commons
NGC 891 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
APOD: Interstellar Dust-Bunnies of NGC 891 (9/9/1999)
SEDS: Information on NGC 891
NGC 891 on Astrophotography by Wolfgang Kloehr

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NGC	NGC 886 NGC 887 NGC 888 NGC 889 NGC 890 NGC 891 NGC 892 NGC 893 NGC 894 NGC 895 NGC 896
PGC	PGC 9027 PGC 9028 PGC 9029 PGC 9030 PGC 9031 PGC 9032 PGC 9033 PGC 9034 PGC 9035
UGC	UGC 1827 UGC 1828 UGC 1829 UGC 1830 UGC 1831 UGC 1832 UGC 1833 UGC 1834 UGC 1835
Caldwell	C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32

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Constellation of Andromeda

Stars

Bayer	α (Alpheratz) β (Mirach) γ (Almach) δ ε ζ η θ ι κ λ μ ν ξ (Adhil) ο π ρ σ τ υ (Titawin) φ χ ψ ω A b c υ Per (Nembus)
Flamsteed	2 3 4 5 6 7 8 9 10 11 12 13 14 (Veritate) 15 18 22 23 26 28 32 36 39 41 44 45 47 55 56 58 59 63 64 65 66 6 Per
Variable	R T U W Z RT RV RX SU SW TU TW WZ XZ AB AC AD AE AF AR BM BX CC CG CN DS DX EG ET EU FF GO GP GQ GX GR GY HH HN IW KK KX KZ LL LN LP LQ OP OS OU PX PY QR QV QX V385 V428 V439 V455 V529 V807
HR	1 40 56 78 104 122 134 178 275 282 283 289 379 410 483 687 746 748 8884 8925 8950 8962 8973 9011 9074 9075 9105
HD	16175 (Buna) 222155
Other	3XMM J004232.1+411314 ADS 48 HAT-P-6 (Sterrennacht) HAT-P-16 HAT-P-19 HAT-P-28 M31-RV KELT-1 NGC 44 NGC 82 NGC 84 NGC 91 NGC 162 NGC 464 Qatar-3 Qatar-4 Qatar-5 PA-99-N2 WASP-1 WISE 0146+4234 WISE J0005+3737 WISE J004945.61+215120.0

Exoplanets	14 Andromedae b κ Andromedae b υ Andromedae b c d Gliese 15 Ab c HD 13931 b HD 16175 b HAT-P-6b HAT-P-32b WASP-1b WASP-33b Qatar-4b Qatar-5b

Star
clusters

NGC	206 272 752 956 7686
Other	Mayall II RBC EXT8

Nebulae

NGC	7662

Galaxies

Messier	32 110
NGC	5 11 13 19 20 21 27 39 43 48 49 51 67 68 69 70 71 72 74 76 79 80 81 83 85 86 90 93 94 96 97 108 109 112 140 149 160 169 181 183 184 214 218 226 228 229 233 243 252 258 260 262 280 304 317 389 393 404 425 431 477 512 513 523 528 529 531 536 542 561 605 620 668 679 687 700 703 704 705 708 709 710 712 714 717 721 732 753 759 801 812 834 891 906 910 911 912 913 920 937 980 995 996 999 1000 7640 7836
Numbered	I II III IV V VIII IX X XI XVIII XIX XXI
Other	3C 66A 3C 66B Andromeda Galaxy Arp 273 Donatiello I UGC 1840

Galaxy clusters	Abell 262 NGC 68 group

Astronomical events	GRB 101225A SN 1885A (S)

Properties

In popular culture

See also

References

External links