Ground-truth observations of stellar surface structure from the lunar surface

Details Ground-truth observations of stellar surface structure from the lunar surface Ground-truth observations of stellar surface structure from the lunar surface

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aipc..207..168l&link_type=abstract

IN: Astrophysics from the moon; Proceedings of the Workshop, Annapolis, MD, Feb. 5-7, 1990 (A91-56576 24-89). New York, American

Physics

1

Lunar Based Equipment, Lunar Observatories, Starspots, Stellar Atmospheres, Stellar Physics, Abundance, Interferometers, Stellar Composition, Stellar Flares, Stellar Rotation

Scientific paper

Astronomers have begun to observe brightness inhomogeneities on the surfaces of stars indicative of starspots, active regions, and chemically-anomalous patches with size scales far smaller than the diffraction limits of the present generation of telescopes. The images of stellar surface structures are very crude and not unique. Optical and ultraviolet interferometers located on the lunar surface could resolve these surface structures on nearby, bright stars to provide 'ground truth' to the present crude images and to extend these studies to much smaller and physically interesting scales. The combination of broad- and narrow-band imaging (where feasible) can provide qualitatively new information on the physical processes that occur in stellar atmospheres by observing phenomena on stars with properties (mass, radius, convective zone depth, rotation rate) far different from the sun. An intermediate-scale optical/ultraviolet interferometer on the lunar surface with 0.001-0.0001-arcsecond angular resolution can provide effective results concerning stellar surface structures.

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