The high-resolution soft X-ray spectrum of HZ 43

Details The high-resolution soft X-ray spectrum of HZ 43 The high-resolution soft X-ray spectrum of HZ 43

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...308..190p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 308, Sept. 1, 1986, p. 190-198. ZWO-supported research.

Astronomy and Astrophysics

Astrophysics

29

High Resolution, White Dwarf Stars, X Ray Spectra, Abundance, Astronomical Spectroscopy, Exosat Satellite, Interstellar Matter, Stellar Mass Accretion

Scientific paper

The authors present the high-resolution soft X-ray spectrum in the range 50 - 350 Å of the hot DA white dwarf HZ 43, obtained with the 500 lines mm-1 grating spectrometer on EXOSAT. Most remarkably, the spectrum indicates that the photosphere of HZ 43 consists solely of hydrogen, to a high degree of purity. Using a grid of hot, high-gravity LTE model atmospheres, the authors derive accurate atmospheric parameters for HZ 43 as well as constraints on the radius and luminosity of the white dwarf and on the column density of absorbing interstellar material. The effective temperature is Teff = 59,000 - 62,000K, and the fractional number density of helium in the photosphere is n(He)/n(H) ≤ 6×10-6.

Affiliated with

Also associated with

No associations

Rating

The high-resolution soft X-ray spectrum of HZ 43 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 The high-resolution soft X-ray spectrum of HZ 43, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The high-resolution soft X-ray spectrum of HZ 43 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1290688