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{{short description|spiral galaxy in the constellation Sculptor}}
{{Short description|Galaxy in the constellation Sculptor}}
{{Infobox galaxy
{{Infobox galaxy
| name = NGC 24
| name = NGC 24
| image = The hidden dark side of NGC 24.jpg
| image = The hidden dark side of NGC 24.jpg
| upright = 1.35
| alt = NGC 24
| alt = NGC 24
| caption = [[Hubble Space Telescope|HST]] image of NGC 24
| caption = [[Hubble Space Telescope|HST]] image of NGC 24
| credit = ESA/Hubble & NASA
| epoch = [[J2000]]
| epoch = [[J2000]]
| constellation name = [[Sculptor (constellation)|Sculptor]]
| constellation name = [[Sculptor (constellation)|Sculptor]]
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'''NGC 24''' is a [[spiral galaxy]] in the southern [[constellation]] of [[Sculptor (constellation)|Sculptor]], about {{Convert|7.31|Mpc|Mly|disp=out|abbr=off|lk=on}} distant from the [[Milky Way]].<ref name=Karachentsev2017/> It was discovered by British astronomer [[William Herschel]] in 1785, and measures some 40,000 light-years across.<ref name=HST/> The general shape of this galaxy is specified by its [[Galaxy morphological classification|morphological classification]] of SA(s)c,<ref name=vaucoulerus1991/> which indicates it is an [[Unbarred spiral galaxy|unbarred spiral]] with no ring-like structure and moderate to loosely-wound [[spiral arm]]s. This galaxy is positioned in the vicinity of the [[Sculptor Group]], but is actually a background object that is more than three times as distant. It may form a pair with another background galaxy, [[NGC 45]].<ref name=Chemin2006/>
'''NGC 24''' is a [[spiral galaxy]] in the southern [[constellation]] of [[Sculptor (constellation)|Sculptor]], about {{Convert|7.31|Mpc|Mly|disp=out|abbr=off|lk=on}} distant from the [[Milky Way]].<ref name=Karachentsev2017/> It was discovered by British astronomer [[William Herschel]] in 1785, and measures some 40,000 light-years across.<ref name=HST/> The general shape of this galaxy is specified by its [[Galaxy morphological classification|morphological classification]] of SA(s)c,<ref name=vaucoulerus1991/> which indicates it is an [[Unbarred spiral galaxy|unbarred spiral]] with no ring-like structure and moderate to loosely-wound [[spiral arm]]s. This galaxy is positioned in the vicinity of the [[Sculptor Group]], but is actually a background object that is more than three times as distant. It may form a pair with another background galaxy, [[NGC 45]].<ref name=Chemin2006/>

==Gallery==
<gallery>
File:NGC_24.png|Hubble
File:NGC 0024 GALEX.jpg|[[GALEX]] ([[ultraviolet]])
File:NGC 0024 2MASS.jpg|[[2MASS]] (near-[[infrared]])
File:NGC_0024SST.jpg|[[Spitzer Space Telescope|Spitzer]] (infrared)
File:NGC 0007 DSS 03.jpg|[[Digitized Sky Survey|DSS]]
</gallery>


==References==
==References==
{{Reflist|refs=
{{Reflist|refs=


<ref name=SIMBAD>{{cite simbad|title=NGC 24|accessdate=16 January 2017}}</ref>
<ref name=SIMBAD>{{cite simbad|title=NGC 24|access-date=16 January 2017}}</ref>


<ref name=Koribalski2004>{{cite journal
<ref name=Koribalski2004>{{cite journal
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| last39=Webster | first39=R. L. | last40=Wright | first40=A. E.
| last39=Webster | first39=R. L. | last40=Wright | first40=A. E.
| title=The 1000 Brightest HIPASS Galaxies: H I Properties
| title=The 1000 Brightest HIPASS Galaxies: H I Properties
| journal=The Astronomical Journal | postscript=.
| journal=The Astronomical Journal | volume=128 | issue=1 | pages=16–46 | date=July 2004
| volume=128 | issue=1 | pages=16–46 | date=July 2004
| doi=10.1086/421744 | bibcode=2004AJ....128...16K
| doi=10.1086/421744 | bibcode=2004AJ....128...16K
| arxiv=astro-ph/0404436 | display-authors=1 }}</ref>
| arxiv=astro-ph/0404436 | s2cid=16229767 | display-authors=1 }}</ref>


<ref name=vaucoulerus1991>{{cite book
<ref name=vaucoulerus1991>{{cite book
| last1=de Vaucouleurs | first1=G. | last2=de Vaucouleurs | first2=A.
| last1=de Vaucouleurs | first1=G. | last2=de Vaucouleurs | first2=A.
| last3=Corwin | first3=H. G., Jr. | last4=Buta | first4=R. J.
| last3=Corwin | first3=H. G. Jr. | last4=Buta | first4=R. J.
| last5=Paturel | first5=G. | last6=Fouque | first6=P.
| last5=Paturel | first5=G. | last6=Fouque | first6=P.
| title=Third reference catalogue of bright galaxies
| title=Third reference catalogue of bright galaxies
Line 80: Line 68:
| volume=132 | issue=6 | pages=2527–2538 | date=December 2006
| volume=132 | issue=6 | pages=2527–2538 | date=December 2006
| doi=10.1086/508859 | arxiv=astro-ph/0609148
| doi=10.1086/508859 | arxiv=astro-ph/0609148
| bibcode=2006AJ....132.2527C }}</ref>
| bibcode=2006AJ....132.2527C | s2cid=947116 }}</ref>


<ref name=Skrutskie2006>{{cite journal |doi=10.1086/498708 |last1=Skrutskie |first1=Michael F. |last2=Cutri |first2=Roc M. |last3=Stiening |first3=Rae |last4=Weinberg |first4=Martin D. |last5=Schneider |first5=Stephen E. |last6=Carpenter |first6=John M. |last7=Beichman |first7=Charles A. |last8=Capps |first8=Richard W. |last9=Chester |first9=Thomas |last10=Elias |first10=Jonathan H. |last11=Huchra |first11=John P. |last12=Liebert |first12=James W. |last13=Lonsdale |first13=Carol J. |last14=Monet |first14=David G. |last15=Price |first15=Stephan |last16=Seitzer |first16=Patrick |last17=Jarrett |first17=Thomas H. |last18=Kirkpatrick |first18=J. Davy |last19=Gizis |first19=John E. |last20=Howard |first20=Elizabeth V. |last21=Evans |first21=Tracey E. |last22=Fowler |first22=John W. |last23=Fullmer |first23=Linda |last24=Hurt |first24=Robert L. |last25=Light |first25=Robert M. |last26=Kopan |first26=Eugene L. |last27=Marsh |first27=Kenneth A. |last28=McCallon |first28=Howard L. |last29=Tam |first29=Robert |last30=Van Dyk |first30=Schuyler D. |last31=Wheelock |first31=Sherry L. |title=The Two Micron All Sky Survey (2MASS) |journal=The Astronomical Journal |date=1 February 2006 |volume=131 |issue=2 |pages=1163–1183 |bibcode=2006AJ....131.1163S |s2cid=18913331 |issn=0004-6256 |doi-access=free }}</ref>
<ref name=Skrutskie2006>{{Cite journal
| first1=M. F. | last1=Skrutskie | first2=R. M. | last2=Cutri
| first3=R. | last3=Stiening | first4=M. D. | last4=Weinberg
| first5=S. | last5=Schneider | first6=J. M. | last6=Carpenter
| first7=C. | last7=Beichman | first8=R. | last8=Capps
| first9=T. | last9=Chester | first10=J. | last10=Elias
| first11=J. | last11=Huchra | first12=J. | last12=Liebert
| first13=C. | last13=Lonsdale | first14=D. G. | last14=Monet
| first15=S. | last15=Price | first16=P. | last16=Seitzer
| first17=T. | last17=Jarrett | first18=J. D. | last18=Kirkpatrick
| first19=J. E. | last19=Gizis | first20=E. | last20=Howard
| first21=T. | last21=Evans | first22=J. | last22=Fowler
| first23=L. | last23=Fullmer | first24=R. | last24=Hurt
| first25=R. | last25=Light | first26=E. L. | last26=Kopan
| first27=K. A. | last27=Marsh | first28=H. L. | last28=McCallon
| first29=R. | last29=Tam | first30=S. | last30=Van Dyk
| first31=S. | last31=Wheelock | display-authors=1
| title=The Two Micron All Sky Survey (2MASS)
| journal=The Astronomical Journal
| volume=131 | issue=2 | pages=1163–1183 | date=February 2006
| doi=10.1086/498708 | bibcode=2006AJ....131.1163S | doi-access=free }}</ref>


<ref name=Karachentsev2017>{{cite journal
<ref name=Karachentsev2017>{{cite journal
Line 111: Line 79:
| volume=153 | issue=1 | id=6 | pages=17 | date=January 2017
| volume=153 | issue=1 | id=6 | pages=17 | date=January 2017
| doi=10.3847/1538-3881/153/1/6 | arxiv=1611.02574
| doi=10.3847/1538-3881/153/1/6 | arxiv=1611.02574
| bibcode=2017AJ....153....6K }}</ref>
| bibcode=2017AJ....153....6K | s2cid=119388974 | doi-access=free }}</ref>


<ref name=HST>{{cite web
<ref name=HST>{{cite web
Line 117: Line 85:
| url=http://www.spacetelescope.org/images/potw1639a/
| url=http://www.spacetelescope.org/images/potw1639a/
| website=www.spacetelescope.org
| website=www.spacetelescope.org
| accessdate=26 September 2016 }}</ref>
| access-date=26 September 2016 }}</ref>


<ref name=ned>{{cite web
<ref name=ned>{{cite web
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| work=Results for NGC 0024
| work=Results for NGC 0024
| url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+24&img_stamp=yes&extend=no
| url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+24&img_stamp=yes&extend=no
| accessdate=2010-05-04}}</ref>
| access-date=2010-05-04}}</ref>


}}
}}
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[[Category:NGC objects|0024]]
[[Category:NGC objects|0024]]
[[Category:Principal Galaxies Catalogue objects|00701]]
[[Category:Principal Galaxies Catalogue objects|00701]]
[[Category:UGCA objects]]
[[Category:UGCA objects|002]]
[[Category:Sculptor (constellation)]]
[[Category:Sculptor (constellation)]]
[[Category:Galaxies discovered in 1785]]
[[Category:Galaxies discovered in 1785]]

Latest revision as of 02:17, 11 November 2024

NGC 24
NGC 24
HST image of NGC 24
Observation data (J2000 epoch)
ConstellationSculptor
Right ascension00h 09m 56.542s[1]
Declination−24° 57′ 47.27″[1]
Redshift0.00185±0.00001[2]
Heliocentric radial velocity554.017±2.099 km/s[2]
Distance23.8 Mly (7.31 Mpc)[3]
Apparent magnitude (V)12.4[4]
Absolute magnitude (V)−17.61
Characteristics
TypeSA(s)c[5]
Apparent size (V)5.7' x 1.5'
Other designations
UGCA 2, ESO 472-G016, MCG-04-01-018, ESO-LV 4720160,[6] PGC 701, CGS 119[4]

NGC 24 is a spiral galaxy in the southern constellation of Sculptor, about 23.8 megalight-years distant from the Milky Way.[3] It was discovered by British astronomer William Herschel in 1785, and measures some 40,000 light-years across.[7] The general shape of this galaxy is specified by its morphological classification of SA(s)c,[5] which indicates it is an unbarred spiral with no ring-like structure and moderate to loosely-wound spiral arms. This galaxy is positioned in the vicinity of the Sculptor Group, but is actually a background object that is more than three times as distant. It may form a pair with another background galaxy, NGC 45.[8]

References

[edit]
  1. ^ a b Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
  2. ^ a b Koribalski, B. S.; et al. (July 2004). "The 1000 Brightest HIPASS Galaxies: H I Properties". The Astronomical Journal. 128 (1): 16–46. arXiv:astro-ph/0404436. Bibcode:2004AJ....128...16K. doi:10.1086/421744. S2CID 16229767.
  3. ^ a b Karachentsev, Igor D.; et al. (January 2017). "The Local Tully-Fisher Relation for Dwarf Galaxies". The Astronomical Journal. 153 (1): 17. arXiv:1611.02574. Bibcode:2017AJ....153....6K. doi:10.3847/1538-3881/153/1/6. S2CID 119388974. 6.
  4. ^ a b "NASA/IPAC Extragalactic Database". Results for NGC 0024. Retrieved 2010-05-04.
  5. ^ a b de Vaucouleurs, G.; et al. (1991). Third reference catalogue of bright galaxies. 9. New York: Springer-Verlag.
  6. ^ "NGC 24". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 January 2017.
  7. ^ "The hidden dark side of NGC 24". www.spacetelescope.org. Retrieved 26 September 2016.
  8. ^ Chemin, Laurent; et al. (December 2006). "H I Studies of the Sculptor Group Galaxies. VIII. The Background Galaxies: NGC 24 and NGC 45". The Astronomical Journal. 132 (6): 2527–2538. arXiv:astro-ph/0609148. Bibcode:2006AJ....132.2527C. doi:10.1086/508859. S2CID 947116.
[edit]
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