Spectroscopic Studies of Wolf-Rayet Stars with Absorption Lines - Part Five - HD9974 - a Single WN3

Details Spectroscopic Studies of Wolf-Rayet Stars with Absorption Lines - Part Five - HD9974 - a Single WN3 Spectroscopic Studies of Wolf-Rayet Stars with Absorption Lines - Part Five - HD9974 - a Single WN3

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...244..173m&link_type=abstract

Astrophysical Journal, Vol.244, P. 173, 1981

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25

Scientific paper

HD 9974 has previously been called a binary because of the presence of absorption lines in its spectrum; however, our radial velocity study gives no evidence of duplicity. The presence of hydrogen in the emission-line spectrum and the ˜100 km s-1 blueshift of the absorption lines argue that the absorption spectrum is intrinsic to the W-R star itself. A comparison is made between HD 9974 and the other two known galactic WN3 stars, HD 104994 and HD 211564. HD 9974 has the weakest emission-line spectrum but also contains the most hydrogen.

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