G2.4 + 1.4, a supernova remnant or ring nebula around a peculiar star

Details G2.4 + 1.4, a supernova remnant or ring nebula around a peculiar star G2.4 + 1.4, a supernova remnant or ring nebula around a peculiar star

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...198..111j&link_type=abstract

Astrophysical Journal, vol. 198, May 15, 1975, pt. 1, p. 111-118. Research supported by the Lockheed Independent Research Progr

Astronomy and Astrophysics

Astronomy

26

Early Stars, Nebulae, Radio Sources (Astronomy), Ring Structures, Supernova Remnants, H Alpha Line, Metallic Stars, Nonthermal Radiation, Stellar Spectra, Ubv Spectra

Scientific paper

G2.4 + 1.4 is a probable nonthermal radio source and an optical nebula which appears to be a supernova remnant (SNR). It also contains an O VI sequence star of great excitation. We present new radiofrequency-continuum and (nil) H 92 alpha observations, optical spectroscopy, and Fabry-Perot scanner observations of the nebula. The object distance (possibly 5 kpc), origin of gas kinematics (possibly SNR expansion), and mode of excitation of the gas (possibly photoexcitation and/or shock wave) remain uncertain. We discuss the possible roles of the O VI star as 'runaway' in an SNR, as a source of photoexcitation, and as an ejector of a 'counterfeit' SNR.

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