Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....42..395h&link_type=abstract
Astronomy and Astrophysics, vol. 42, no. 3, Sept. 1975, p. 395-406.
Astronomy and Astrophysics
Astronomy
3
Far Ultraviolet Radiation, Rocket-Borne Instruments, Stellar Spectrophotometry, Ultraviolet Spectra, Radiant Flux Density, Spaceborne Astronomy, Stellar Atmospheres
Scientific paper
Results are reported for measurements of the absolute photon flux from gamma Ori which were made with two rocket-borne photometers in the wavelength region from 1250 to 3000 A. The results, having uncertainty values of plus or minus 25%, are compared with model calculations and previous measurements. Two recent model calculations for line-blanketed stellar atmospheres are strongly supported longward of 1500 A by the present measurements. Model comparison yields an effective temperature of 24,600 K with log g 4.0. Compared to previous measurements, the present results are, in general, above all other values down to 1500 A. Below 1500 A, they fall below the lower limit of all previously measured values and are in disagreement with theories. The star gamma Ori may be taken confidently as a secondary standard with the present values down to 1500 A. Below 1500 A, it should not serve as a standard unless the source of discrepancies is cleared up.
Hessberg H.
Niekerke J.
Stephan Karl-Heinz
No associations
LandOfFree
Absolute rocket photometry of gamma ORI in the VUV region 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 Absolute rocket photometry of gamma ORI in the VUV region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Absolute rocket photometry of gamma ORI in the VUV region will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-908944