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| − | {{Infobox Galaxy
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| − | | name = [[New General Catalogue|NGC]] 5005
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| − | | image = [[File:NGC5005.jpg]]
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| − | | constellation name = [[Canes Venatici (constellation)|Canes Venatici]]<ref name="sinnott1988">{{cite book
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| − | | author=R. W. Sinnott, editor
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| − | | title= The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer
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| − | | year=1988
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| − | | publisher=Sky Publishing Corporation and Cambridge University Press
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| − | | isbn=0-933346-51-4}}</ref>
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| − | | type = SAB(rs)bc<ref name="ned">{{cite web
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| − | | title=NASA/IPAC Extragalactic Database
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| − | | work=Results for NGC 5005
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| − | | url=http://nedwww.ipac.caltech.edu/
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| − | | accessdate=2006-08-24<!--, 2010-11-23 -->}}</ref>
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| − | | epoch = [[J2000]]
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| − | | ra = {{RA|13|10|56.2}}<ref name="ned" />
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| − | | dec = {{DEC|+37|03|33}}<ref name="ned" />
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| − | | dist_ly = ~ 65 [[light-year|Mly]] (~ 20 [[parsec|Mpc]])<ref name="ned" />
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| − | | z = 946 ± 5 km/[[second|s]]<ref name="ned" />
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| − | | appmag_v = 10.6<ref name="ned" />
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| − | | size_v = 5′.8 × 2′.8<ref name="ned" />
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| − | | names = [[Uppsala General Catalogue|UGC]] 8256,<ref name="ned" /> [[Principal Galaxies Catalogue|PGC]] 45749,<ref name="ned" /> [[Caldwell catalogue|Caldwell]] 29
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| − | }}
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| − | '''NGC 5005''' (also known as '''Caldwell 29''') is an inclined [[spiral galaxy]] in the constellation [[Canes Venatici]]. The galaxy has a relatively bright nucleus and a bright disk that contains multiple dust lanes.<ref name="carnegieatlas" >{{cite book
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| − | | author=A. Sandage, J. Bedke
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| − | | year=1994
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| − | | title=Carnegie Atlas of Galaxies
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| − | | edition=
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| − | | publisher=Carnegie Institution of Washington
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| − | | location=Washington, D.C.
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| − | | isbn=0-87279-667-1}}</ref> The galaxy's high surface brightness makes it an object that is visible to amateur astronomers using large amateur telescopes.
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| − | Distance measurements for NGC 5005 vary from 13.7 [[parsec|megaparsecs]] (45 million [[light-year]]s) to 34.6 megaparsecs (113 million light-years), averaging about 20 megaparsecs (65 million light-years).<ref name="ned"/>
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| − | ==Nucleus==
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| − |
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| − | NGC 5005 contains a [[low ionization nuclear emission region]] (LINER) nucleus.<ref name="hoetal1997">{{cite journal
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| − | | author= L. C. Ho, A. V. Filippenko, W. L. W. Sargent
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| − | | title=A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies
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| − | | journal=Astrophysical Journal Supplement
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| − | | year=1997
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| − | | volume=112
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| − | | issue= 2
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| − | | pages=315–390
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| − | | bibcode=1997ApJS..112..315H
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| − | | doi=10.1086/313041 |arxiv = astro-ph/9704107 }}</ref> LINER nuclei contain weakly [[ion]]ized gas. The power source for the LINER emission has been debated extensively, with some researchers suggesting that LINERs are powered by [[active galactic nuclei]] that contain [[supermassive black hole]]s and other researchers suggesting that LINERs are powered by [[star formation]] activity.
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| − | ===X-ray emission===
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| − | X-ray observations of NGC 5005 have revealed that it contains a variable, point-like hard [[X-ray]] source in its nucleus.<ref name="terashimaetal2002">{{cite journal
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| − | | author= Y. Terashima, N. Iyomoto, L. C. Ho, A. F. Ptak
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| − | | title=X-Ray Properties of LINERs and Low-Luminosity Seyfert Galaxies Observed with ASCA. I. Observations and Results
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| − | | journal=Astrophysical Journal Supplement
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| − | | year=2002
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| − | | volume=139
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| − | | issue= 1
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| − | | pages=1–36
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| − | | bibcode=2002ApJS..139....1T
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| − | | doi=10.1086/324373|arxiv = astro-ph/0203005 }}</ref> These results imply that NGC 5005 contains a [[supermassive black hole]]. The strong, variable X-ray emission is characteristic of the emission expected from the hot, compressed gas in the environment outside a black hole in an [[active galactic nucleus]].
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| − | ==Companion galaxy==
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| − | NGC 5005 and the nearby spiral galaxy [[NGC 5033]] comprise a physical galaxy pair.<ref name="helouetal1982">{{cite journal
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| − | | author= G. Helou, E. E. Salpeter, Y. Terzian
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| − | | title= Neutral hydrogen in binary and multiple galaxies
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| − | | journal=Astronomical Journal
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| − | | year=1982
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| − | | volume=87
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| − | | pages=1443–1464
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| − | | bibcode=1982AJ.....87.1443H
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| − | | doi= 10.1086/113235 }}</ref> The two galaxies weakly influence each other gravitationally, but they are not yet close enough to each other to be distorted by the tidal forces of the gravitational interaction.
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| − | ==Notes==
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| − | {{reflist}}
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| − |
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| − | ==External links==
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| − | {{commonscat-inline}}
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| − | *{{WikiSky}}
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| − |
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| − | {{Caldwell catalogue}}
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| − | {{Ngc55}}
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| − |
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| − | [[Category:Spiral galaxies]]
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| − | [[Category:Intermediate spiral galaxies]]
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| − | [[Category:LINER galaxies]]
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| − | [[Category:Canes Venatici (constellation)]]
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| − | [[Category:NGC objects|5005]]
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| − | [[Category:UGC objects|08256]]
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| − | [[Category:PGC objects|45749]]
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| − | [[Category:Caldwell objects|029b]]
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