Changes in the high state of AM Herculis - A simultaneous X-ray, optical, polarimetric, and spectroscopic study

Details Changes in the high state of AM Herculis - A simultaneous X-ray, optical, polarimetric, and spectroscopic study Changes in the high state of AM Herculis - A simultaneous X-ray, optical, polarimetric, and spectroscopic study

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...247..984c&link_type=abstract

Astrophysical Journal, Part 1, vol. 247, Aug. 1, 1981, p. 984-993. Research supported by the Battelle Memorial Institute;

Astronomy and Astrophysics

Astronomy

29

Binary Stars, Circular Polarization, Stellar Spectrophotometry, X Ray Astronomy, Emission Spectra, Light Curve, Radial Velocity, Stellar Mass Accretion, Ubv Spectra, White Dwarf Stars

Scientific paper

Simultaneous UBVR photometry, circular polarimetry, and high resolution spectroscopy observations (during May, 1979), coordinated with a monitor proportional counter and a solid state spectrometer, are reported for the cataclysmic variable AM Her, when it was in its normal 'high' state, where the mean visual magnitude was 12.5 mag versus 15 mag for the infrequent 'low' state. The circular polarization was always negative and had the smallest peak to peak amplitude yet reported. The emission lines He II 4686, H-beta, N III 4634, N III 4640-4641, C III 4650-4651, and He I 4713 present at least two components identified with the broad and sharp components of Greenstein at al. (1977). The radial velocity curve of the broad component shows a 50% reduction of amplitude in comparison to their values, and a third very broad component in 4686 is identified. No correlation between the optical photometry and 1-10 keV X-ray intensity was found on flickering time scales. Results of the observations are discussed within the framework of models with accretion onto one or both magnetic poles of the white dwarf.

Affiliated with

Also associated with

No associations

Rating

Changes in the high state of AM Herculis - A simultaneous X-ray, optical, polarimetric, and spectroscopic study does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Changes in the high state of AM Herculis - A simultaneous X-ray, optical, polarimetric, and spectroscopic study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Changes in the high state of AM Herculis - A simultaneous X-ray, optical, polarimetric, and spectroscopic study will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1744484