Abstract
view Abstract Citations (20) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS New OH Observations of the Supergiant IRC +10420 Lewis, B. M. ; Terzian, Y. ; Eder, J. Abstract The left and right circularly polarized spectra of the supergiant IRC +10420 are presented. The current intensity of the object's +55 km/s feature in the 1612 and 1665 MHz lines is discussed. The 1665 MHz feature is weakening while its 1612 MHz feature is growing more quickly than before. These observations are consistent with a linear growth of the mean flux from the two lines, which originate from the same excited level. The decreasing intensity of the 1665 MHz feature may be due to conversion of 1665 MHz photons from a thriving maser to 1612 MHz photons in the saturated outer layers, as the maser's column length grows outward. Publication: The Astrophysical Journal Pub Date: March 1986 DOI: 10.1086/184629 Bibcode: 1986ApJ...302L..23L Keywords: Hydroxyl Emission; Interstellar Masers; Line Spectra; Stellar Spectrophotometry; Supergiant Stars; Interstellar Matter; Stellar Envelopes; Astrophysics; INTERSTELLAR: MOLECULES; MASERS; STARS: CIRCUMSTELLAR SHELLS full text sources ADS | data products SIMBAD (1)
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