NGC 419 explained

NGC 419
Credit:NASA/ESA Hubble
Epoch:J2000
Constellation:Tucana
Dist Ly:57000+/-[1]
Appmag V:10.30
Size V:2.8 × 2.8
Age: Gyr
Names:Kron 58, Lindsay 85, ESO 29-33, LI-SMC 182, OGLE-CL SMC 159, RZ2005 174.[2]

NGC 419 is a globular cluster located approximately 57000pc from Earth in the constellation Tucana. It was discovered on September 2, 1826, by James Dunlop. It was described by Dreyer as "pretty large, pretty bright, round, gradually brighter middle".[3] At a distance of about 186,000 light years (57,000 parsecs), it is located within the Small Magellanic Cloud.[1] At an aperture of 50 arcseconds, its apparent V-band magnitude is 10.30, but at this wavelength, it has 0.15 magnitudes of interstellar extinction.

NGC 419 is about 1.45 billion years old. Its estimated mass is, and its total luminosity is, leading to a mass-to-luminosity ratio of 0.18 /.[4] All else equal, older star clusters have higher mass-to-luminosity ratios; that is, they have lower luminosities for the same mass.[4]

Notes and References

  1. Web site: NASA/IPAC Extragalactic Database. Results for NGC 0419. 2 September 2016.
  2. NGC 419. 6 February 2017.
  3. Web site: New General Catalog Objects: NGC 400 - 449. Cseligman. 19 February 2017.
  4. 10.1093/mnras/stab1065. Dynamical masses and mass-to-light ratios of resolved massive star clusters – II. Results for 26 star clusters in the Magellanic Clouds. 2021. Song. Ying-Yi. Mateo. Mario. Bailey. John I.. Walker. Matthew G.. Roederer. Ian U.. Olszewski. Edward W.. Reiter. Megan. Kremin. Anthony. Monthly Notices of the Royal Astronomical Society. 504. 3. 4160–4191. free . 2104.06882.