NGC 419
Globular cluster in the constellation Tucana
NGC 419 is a globular cluster located approximately 57,000 pc (190,000 ly) 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". At a distance of about 186,000 light years (57,000 parsecs), it is located within the Small Magellanic Cloud. 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 6.4×104 M☉, and its total luminosity is 3.49×105 L☉, leading to a mass-to-luminosity ratio of 0.18 M☉/L☉. All else equal, older star clusters have higher mass-to-luminosity ratios; that is, they have lower luminosities for the same mass.
Sources and credits
This article is adapted from the Wikipedia article “NGC 419”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- NGC 419 HST ACS WFC3 UVIS.jpg by Meli thev, CC BY-SA 4.0
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