Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..232s&link_type=abstract
Nature (ISSN 0028-0836), vol. 323, Sept. 18, 1986, p. 232-234. Research supported by the National Geographic Society, NSF, and N
Astronomy and Astrophysics
Astronomy
2
Infrared Sources (Astronomy), Nonthermal Radiation, Point Sources, Radio Sources (Astronomy), Sagittarius Constellation, Accretion Disks, Astronomical Models, Black Body Radiation, Galactic Nuclei, Hot Stars, Interstellar Extinction
Scientific paper
Recent observations have revealed point sources at wavelengths 0.7 - 1.0 μm and 1 - 5 μm, which are approximately aligned with the compact non-thermal radio source Sgr A* in the galactic centre. The assembled 0.7 - 5 μm data indicate that the two point sources are at the same position and have spectral continuity; they are thus probably the same object. The authors discuss alternative interpretations of this infrared point source. If it is an object at the galactic centre the infrared emission may be the Rayleigh-Jeans tail of a hot star or star cluster, or thermal accretion disk with temperature ≅35×103K.
Forrest William John
Stein Wayne A.
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