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|  |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Reticulum |
| Right ascension | 03h 18m 14s[1] |
| Declination | –66° 28′ 19.9″[1] |
| Characteristics | |
| Spectral type | K5-M0[2] |
| Astrometry | |
| Distance | 13,470,000[3] ly (4,130,000[3] pc) |
| Details[2] | |
| Radius | 1668+168 −190 R☉ |
| Luminosity | 512,861 L☉ |
| Temperature | 3780+100 −50 K |
| Other designations | |
Gaia DR3 4671554362135772928 | |
| Database references | |
NGC 1313 is an extremely luminous and large red supergiant star in the galaxy NGC 1313 (also called the Topsy Turvy Galaxy), approximately 12,900,000 ly (4,000,000 pc) from Earth.[1]
Properties
editWith an estimated size of 1,668 R☉, NGC 1313-310 may be the largest known star, with a radius more than that of stars such as WOH G64, VY Canis Majoris and NML Cygni. However, this size may be unreliable due to the extreme luminosity over 500,000 L☉ and only one paper referencing the star. This luminosity could be explained by the star being a binary system or star cluster, although unlikely.
The author of the paper that suggests this data says, “The SED fits appear fine for most objects, but we could be tricked by the log L if the RSG is not an isolated, single star. Second, the temperature used to constrain their radii comes from the TiO diagnostic, which produces temperatures generally on the cool side (again, this cranks up the radii, given the relation between radius and effective temperature). Applying the scaling relation in this work to find the stellar radii using a more realistic temperature sizes them down a bit to around 1500 R☉.”[2]
See also
editReferences
edit- ^ a b Cite error: The named reference
https://aladin.cds.unistra.fr/AladinLite/was invoked but never defined (see the help page). - ^ a b Cite error: The named reference
https://www.aanda.org/articles/aa/full_html/2024/09/aa49607-24/aa49607-24.htmlwas invoked but never defined (see the help page). - ^ a b Cite error: The named reference
https://ned.ipac.caltech.edu/byname?objname=NGC1313&hconst=67.8&omegam=0.308&omegav=0.692&wmap=4&corr_z=1was invoked but never defined (see the help page).