WR 42e

WR 42e
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Carina
Right ascension 11h 14m 45.50s
Declination −61° 15 00.1
Apparent magnitude (V) 14.53
Characteristics
Spectral type WN6/O2If[1]
B−V color index ?
Astrometry
Radial velocity (Rv)? km/s
Proper motion (μ) RA: ? mas/yr
Dec.: ? mas/yr
Parallax (π)? ± ?? mas
Distance25,000 ly
(7,664 pc)
Absolute magnitude (MV)?
Absolute bolometric
magnitude
 (Mbol)
-10.5
Details
Mass125-135[2] M
Radius12.1[3] R
Luminosity1,300,000 L
Temperature56,000[4] K
Metallicity?
Rotation?
Age? Myr
Other designations
2MASS J11144550-115001, SB04 #954 [5]
Database references
SIMBADdata

WR 42e (2MASS J11144550-115001) is a Wolf-Rayet star in the constellation of the Carina of apparent magnitude +14.53. It is located at 33 arcsec west of center of open cluster NGC 3603. The star is around 25,000 light years or 7,600 parsec from the Sun.

See also

References

  1. http://pacrowther.staff.shef.ac.uk/WRcat/
  2. This unusual measurement was made by assuming the star was ejected from a three-body encounter in NGC 3603. This assumption also means that the current star is the result of a merger between two original close binary components. The mass is consistent with evolutionary mass for a star with the observed parameters.
  3. Based upon:
    \begin{smallmatrix} \frac{L}{L_{sun}} = \left ( \frac{R}{R_{sun}} \right )^2 \left ( \frac{T_{eff}}{T_{sun}} \right )^4 \end{smallmatrix}
    where L is luminosity, R is radius and Teff is the effective temperature. See:
    Krimm, Hans (August 19, 1997). "Luminosity, Radius and Temperature". Hampden-Sydney College. Retrieved 2007-05-16.
  4. https://en.wikipedia.org/wiki/Wolf–Rayet_star#Physical_properties|Physical properties of Wolf-Rayet stars
  5. http://pacrowther.staff.shef.ac.uk/WRcat/

Coordinates: 11h 14m 42.50s, −61° 15′ 00.1″