NGC 4036

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NGC 4036
2MASX J12012689+6153445, IRAS 11588+6210, LEDA 37930, UGC 7005, UZC J120126.7+615345, Z 292-59[5]

NGC 4036 is the

circumpolar constellation of Ursa Major
. In the Carnegie Atlas of Galaxies, it is described as being "characterized by an irregular pattern of dust lanes threaded through the disc in an 'embryonic' spiral pattern indicating a mixed
visual magnitude of 10.7, it can be dimly viewed using a 4 in (10 cm) aperture telescope.[6]

The visual dimensions of this galaxy are 2.703 × 1.027

major axis having a position angle of 85°.[4] The galaxy is being viewed nearly edge-on, with an inclination of 18° to the line of sight from the Earth.[7] It is moving away from us with a heliocentric radial velocity of 1,445[2] km/s. The estimated visual luminosity of the galaxy is 4.2×1010 L⊙, or 42 billion times the brightness of the Sun. Photographs show a tightly wound spiral pattern in the galactic disk, with three dust lanes—the southern side of the galaxy appears dimmer due to the dust configuration.[7] The mass of the free gas and dust in the galaxy is about 1.7×109 M⊙ and 4.4×105 M⊙, respectively, with around 7×104 M⊙ of the gas being in an ionized state.[4]

This is a type of

ionized gas in the region of its nucleus. Chemically, the stars at the center of the nucleus have a higher metallicity than in the neighboring regions. It appears that there is a tilted disk of stars orbiting the nucleus within a radius of 820 ly (250 pc). The galactic bulge itself appears triaxial with the ionized gas concentrated near the center of this bulge region.[8] Images of the galaxy with the Hubble Space Telescope show a wispy disk of dust on all sides of the nucleus, with what appears to be the tendrilous remains of an ionization cone leading away 4 arc seconds to the northeast. Such features are common in Seyfert galaxies.[7]

On July 23, 2007, Type Ia supernova SN 2007gi was discovered by Koichi Itagaki near the central bulge of this galaxy.[9] It reached peak magnitude around August 14, then steadily declined in brightness thereafter. Materials identified in the spectrum included silicon, calcium, and sulfur moving outward at velocities of around 15,500 km/s. This is a 50% higher velocity than what is normally observed with supernovae of this type.[10]

NGC 4036 is a member of the LGG 266 galaxy group, along with NGC 4041, IC 758, UGC 7009, and UGC 7019. It is located just 17 arc minutes from NGC 4041, and the two form a pair with a projected separation of around 470 kly (143 kpc).[4]

Gallery

  • NGC 4036 (SDSS DR14)
    NGC 4036 (SDSS DR14)
  • NGC 4036 (HST)
    NGC 4036 (HST)

References

  1. ^
    S2CID 18913331
    .
  2. ^
    S2CID 119420446
    .
  3. ^
    doi:10.1086/117225, archived from the original on 2006-09-30, retrieved 2015-11-16.{{citation}}: CS1 maint: numeric names: authors list (link
    )
  4. ^
    S2CID 119466666
    .
  5. ^ "NGC 4036". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2015-11-16.
  6. ISBN 978-0521858939
    .
  7. ^
    ISBN 978-1139500074
    .
  8. S2CID 54607256
    .
  9. Bibcode:2007CBET.1021....1H
    .
  10. S2CID 118517321
    .

External links

  • Media related to NGC 4036 at Wikimedia Commons


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