WR 140
(HD 193793, V1687 Cyg)
(Wolf-Rayet star that produces much dust)
WR 140 is a Wolf-Rayet star that is the binary companion
of an O-type star , the two forming a spectroscopic binary .
The pair is of interest as a colliding-wind binary , a
binary pair between which stellar winds collide
producing shock and creating substantial dust .
Characteristics of the pair:
WR 140 specific characteristics:
The companion, which has spectral type O5, is larger, brighter, and
more massive, but interest in the binary
is due to the Wolf Rayet star,
which gives the pair a Wolf-Rayet-specific spectral signature .
(star,variable star )
Further reading:
https://en.wikipedia.org/wiki/WR_140
https://en.wikipedia.org/wiki/Colliding-wind_binary
http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WR+140
https://www.roe.ac.uk/~pmw/Wr140int.htm
https://ui.adsabs.harvard.edu/abs/2011BSRSL..80..595W/abstract
Redshift Parsecs /Distance Lightyears /Lookback Years
~0 1.52kpc 4.95kly WR 140
Coordinates: WR 140 J202027.97608+435116.2802
Referenced by page:
stellar designation
Notes to myself regarding this page
Index