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Searches for optical counterparts of the two millisecond pulsars (1983)

Djorgovski, S. ; Spinrad, H.

[s.l.] : Nature Publishing Group

Nature 306 (1983), S. 569-571

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] We have obtained a good quality spectrum of the candidate object3 (Fig. 1) on the night of 9 May 1983 UT, using CRYOCAM charge coupled device (CCD) spectrograph on the Kitt Peak 4-m telescope. Very heavy extinction is evident. We have clearly detected Ha in absorption, but the sodium D lines are ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/306569a0

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Digitale Medien

The detection of the 5577.3å line of [OI] in comets (1984)

Krishna, K. S. Swamy ; Spinrad, H.

Springer

Earth, moon and planets 30 (1984), S. 105-110

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ISSN: 1573-0794

Quelle: Springer Online Journal Archives 1860-2000

Thema: Geologie und Paläontologie , Physik

Notizen: Abstract The spectral synthesis of C 2 Swan band sequence δV = − 1 indicates the intensity of the forbidden green oxygen line of 5577.3 ⫗ to be about 3 to 5% of the 6300 ⫗ line. Therefore, it appears that the green line should be observable in high-resolution spectra of a bright comet. Festou and Feldman suggest red/green 〉/ 10 means a water parent origin.