Is the X-ray Transient HD 34921 (4U 0515+38) a B[e] Star?

Details Is the X-ray Transient HD 34921 (4U 0515+38) a B[e] Star? Is the X-ray Transient HD 34921 (4U 0515+38) a B[e] Star?

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aspc..355..289n&link_type=abstract

Stars with the B[e] Phenomenon. ASP Conference Series, Vol. 355, Proceedings of the Conference Held 10-16 July, 2005, at the Isl

Astronomy and Astrophysics

Astronomy

Scientific paper

HD 34921 (= BD+37°1160}) has been identified as the counterpart of the X-ray source 4U 0515+38 (= 1H 0521+373). Presently, the star is classified optically as B0III-IVpe. The likely association with the IRAS source 051921+3737 suggests a dust envelope. This is quite uncommon between the High Mass X-Ray Binaries (HMXBs), but for the CI Cam/XTE J0421+560 system. Strong analogies in the infrared spectra of HD 34921 and CI Cam, referring to dust shell and very complex circumstellar environment, led tet{NorciClark} to classify both stars as B[e] stars, the only known HMXRB optical counterpart of this type. Here we argue that HD 34921 is not properly a B[e] star.

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