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Coordinates: Sky map 15h 28m 0.7s, +64° 45′ 48.00″
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NGC 5949
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{{Short description|Galaxy in the constellation Draco}}
{{Sky|15|28|0.67|+|64|45|47.35}}
{{Sky|15|28|0.7|+|64|45|48.00}}

{{Infobox galaxy
{{Infobox galaxy
| name = NGC 5949
| name = [[New General Catalogue|NGC]] 5949
| image = NGC5949 - SDSS DR14.jpg
| image = Small but significant (36252859422).jpg
| image_size = 300px
| image_size = 300
| caption = A [[Hubble Space Telescope]] (HST) image of NGC 5949
| caption = Dwarf galaxy NGC 5949 taken by [[Sloan Digital Sky Survey|SDSS]].<ref name="esahubble">{{cite web|title=Small but significant|url=https://www.spacetelescope.org/images/potw1732a/|website=www.spacetelescope.org|accessdate=7 August 2017}}</ref>
| epoch = [[J2000]]
| epoch = [[J2000]]
| pronounce =
| constellation name = [[Draco (constellation)|Draco]]
| constellation name = [[Draco (constellation)|Draco]]
| ra = {{RA|15|28|0.67}}<ref name="simbad">{{cite web|title=NGC 5949|url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5949|website=simbad.u-strasbg.fr|accessdate=7 August 2017}}</ref>
| ra = {{RA|15|28|0.70}}<ref name="simbad">{{cite web|title=NGC 5949|url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+5949|website=simbad.u-strasbg.fr|access-date=7 August 2017}}</ref>
| dec = {{DEC|64|45|47.35}}<ref name="simbad"/>
| dec = {{DEC|64|45|48.0}}<ref name="simbad"/>
| z = 0.001414<ref name="simbad"/>
| z = 0.001414±0.000073<ref name="simbad"/>
| h_radial_v = 424 Km/s<ref name="simbad"/>
| dist_ly = 44 [[light-year|Mly]] (13.49 M[[Parsec|pc]])<ref name="simbad"/>
| gal_v =
| type = SA(r)bc<ref name="simbad"/>
| dist_pc =
| size = 30,000 ly (diameter)<ref name="simbad"/>
| dist_ly = 44 [[Light-year|Mly]]<ref name="esahubble"/>
| appmag_v =12.1<ref name="simbad"/>
⚫
| size_v = 1.9 x .89{{citation needed|date=November 2017}}
| group_cluster =
| type = SA(r)bc{{citation needed|date=November 2017}}
| notes =Bright hot blue stars make up most of the galaxy
| mass = <!-- In solar masses {{Val|0|e=0}} -->
| mass_light_ratio = <!-- In solar units -->
| size = 30,000 ly (diameter){{citation needed|date=November 2017}}
| stars =
| appmag_v =
| appmag_b = 12.70<ref name="simbad"/>
| absmag_v =
⚫
| size_v = 2.27 x 0.94{{citation needed|date=November 2017}}
| half_light_radius_pc = <!-- physical dimension, pc preferred -->
| half_light_radius_arcminsec = <!-- apparent dimension -->
| h1_scale_length_pc = <!-- physical dimension, pc preferred -->
| h1_scale_length_arcminsec = <!-- apparent dimension -->
| xray_radius_pc = <!-- physical dimension, pc preferred -->
| xray_radius_arcminsec = <!-- apparent dimension -->
| notes =
| names = LEDA 55165, SDSS J152800.67+644547.4, Z 319-16, IRAS F15273+6456, 2MASX J15280067+6445473, TC 847, Z 1527.4+6455, IRAS 15273+6456, MCG+11-19-008, UGC 9866, K73 682, PSCz Q15273+6456, UZC J152800.7+644547
| names = LEDA 55165, SDSS J152800.67+644547.4, Z 319-16, IRAS F15273+6456, 2MASX J15280067+6445473, TC 847, Z 1527.4+6455, IRAS 15273+6456, MCG+11-19-008, UGC 9866, K73 682, PSCz Q15273+6456, UZC J152800.7+644547
| references =
}}
}}


'''NGC 5949''' is a dwarf spiral galaxy located about 44 million light years away<ref name="esahubble"/> in the constellation of [[Draco (constellation)|Draco]].<ref>https://in-the-sky.org/data/catalogue.php?cat=NGC&const=35</ref>
'''NGC 5949''' is a [[dwarf spiral galaxy]] located around 44 million [[Light-year|light-years]] away in the [[Draco (constellation)|constellation Draco]].<ref name=":0">{{Cite web|url=https://in-the-sky.org/data/catalogue.php?cat=NGC&const=35|title = The New General Catalogue (NGC) in Draco}}</ref><ref name=":3">{{Cite web |title=By Name {{!}} NASA/IPAC Extragalactic Database |url=https://ned.ipac.caltech.edu/byname?objname=NGC+5949&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1 |access-date=2024-04-03 |website=ned.ipac.caltech.edu}}</ref><ref name="hst"/> NGC 5949 was discovered in 1801 by [[William Herschel]], and it is 30,000 light-years across. NGC 5949 is not known to have an [[Active galactic nucleus]], and it is not known for much [[Star formation|star-formation]].<ref name=":3" />

== Characteristics ==
With a mass of about a hundredth that of the [[Milky Way]], NGC 5949 is a relatively bulky example of a [[dwarf galaxy]]. Its classification as a dwarf is due to its relatively small number of constituent stars, but the galaxy’s loosely-bound spiral arms also place it in the category of [[Barred spiral galaxy|barred spirals]]. This structure is just visible in the Hubble Space Telescope (HST) image, which shows the galaxy as a bright yet ill-defined pinwheel. Despite its small proportions, NGC 5949’s proximity has meant that its light can be picked up by fairly small telescopes, as discovered by William Herschel.<ref name="hst">{{Cite web |last= ESA/Hubble & NASA |title=Small but significant |url=https://www.spacetelescope.org/images/potw1732a/ |date= 7 August 2017 |access-date=2024-04-03 |website=www.spacetelescope.org |language=en}}</ref>

Astronomers have run into several cosmological quandaries when it comes to dwarf galaxies like NGC 5949. For example, the distribution of [[dark matter]] within dwarfs is quite puzzling (the “[[Cuspy halo problem|cuspy halo]]” problem), and our simulations of the Universe predict that there should be many more dwarf galaxies than we see around us (the “[[Dwarf galaxy problem|missing satellites]]” problem).<ref name="hst"/>


==References==
==References==
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==External links==
==External links==
* {{cite simbad|title=NGC 5949|access-date=7 August 2017}}
* {{cite simbad|title=NGC 5949|access-date=7 August 2017}}
* {{Commons category-inline}}



{{Commonscat}}
{{Creative Commons text attribution notice|cc=by4|url=https://esahubble.org/images/potw1732a/}}
{{Galaxy}}
{{Ngc60}}
{{Ngc60}}
{{Catalogs | NGC = 5949 | UGC = 9866}}
{{Draco (constellation)}}
{{Draco (constellation)}}


{{DEFAULTSORT:NGC 5949}}
[[Category:NGC objects|5949]]
[[Category:NGC objects|5949]]
[[Category:Draco (constellation)]]
[[Category:Draco (constellation)]]
[[Category:UGC objects|9866]]
[[Category:UGC objects|9866]]
{{Authority control}}
[[Category:Unbarred spiral galaxies]]
[[Category:Spiral galaxies]]


{{galaxy-stub}}

Latest revision as of 03:03, 20 August 2024

NGC 5949
A Hubble Space Telescope (HST) image of NGC 5949
Observation data (J2000 epoch)
ConstellationDraco
Right ascension15h 28m 0.70s[1]
Declination64° 45′ 48.0″[1]
Redshift0.001414±0.000073[1]
Distance44 Mly (13.49 Mpc)[1]
Apparent magnitude (V)12.1[1]
Characteristics
TypeSA(r)bc[1]
Size30,000 ly (diameter)[1]
Apparent size (V)1.9 x .89[citation needed]
Notable featuresBright hot blue stars make up most of the galaxy
Other designations
LEDA 55165, SDSS J152800.67+644547.4, Z 319-16, IRAS F15273+6456, 2MASX J15280067+6445473, TC 847, Z 1527.4+6455, IRAS 15273+6456, MCG+11-19-008, UGC 9866, K73 682, PSCz Q15273+6456, UZC J152800.7+644547

NGC 5949 is a dwarf spiral galaxy located around 44 million light-years away in the constellation Draco.[2][3][4] NGC 5949 was discovered in 1801 by William Herschel, and it is 30,000 light-years across. NGC 5949 is not known to have an Active galactic nucleus, and it is not known for much star-formation.[3]

Characteristics

[edit]

With a mass of about a hundredth that of the Milky Way, NGC 5949 is a relatively bulky example of a dwarf galaxy. Its classification as a dwarf is due to its relatively small number of constituent stars, but the galaxy’s loosely-bound spiral arms also place it in the category of barred spirals. This structure is just visible in the Hubble Space Telescope (HST) image, which shows the galaxy as a bright yet ill-defined pinwheel. Despite its small proportions, NGC 5949’s proximity has meant that its light can be picked up by fairly small telescopes, as discovered by William Herschel.[4]

Astronomers have run into several cosmological quandaries when it comes to dwarf galaxies like NGC 5949. For example, the distribution of dark matter within dwarfs is quite puzzling (the “cuspy halo” problem), and our simulations of the Universe predict that there should be many more dwarf galaxies than we see around us (the “missing satellites” problem).[4]

References

[edit]
  1. ^ a b c d e f g "NGC 5949". simbad.u-strasbg.fr. Retrieved 7 August 2017.
  2. ^ "The New General Catalogue (NGC) in Draco".
  3. ^ a b "By Name | NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 2024-04-03.
  4. ^ a b c ESA/Hubble & NASA (7 August 2017). "Small but significant". www.spacetelescope.org. Retrieved 2024-04-03.
[edit]


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