Rotational fine-structure lines of interstellar C2 toward Zeta Persei

Details Rotational fine-structure lines of interstellar C2 toward Zeta Persei Rotational fine-structure lines of interstellar C2 toward Zeta Persei

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...236..474c&link_type=abstract

Astrophysical Journal, Part 1, vol. 236, Mar. 1, 1980, p. 474-480.

Astronomy and Astrophysics

Astrophysics

45

Abundance, Carbon, Fine Structure, Interstellar Chemistry, Interstellar Matter, Line Spectra, Fluorescence, Molecular Oscillators, Molecular Rotation

Scientific paper

Nine of the rotational fine-structure lines of the 2-0 band of the Phillips system of interstellar C2 toward Zeta Persei have been detected with the McDonald Observatory 2.7 m telescope's coude echelle spectrograph and Reticon detector. The equivalent widths of the lines yield values of N(C2) equals 1.2 x 10 to the 13th per sq cm and T(rot) equals 97 K. The apparent discrepancy in the observed and predicted cloud temperature is discussed by suggesting that the level populations of C2 have been altered from those expected in pure thermal equilibrium by radiative pumping through the Mulliken and Phillips systems. Although not all of the physical constants required to calculate this effect in detail are known, arguments based on reasonable estimates of their values suggest that radiative pumping can indeed produce a rotational temperature of 97 K even though the kinetic temperature of the cloud is significantly lower than this value.

Affiliated with

Also associated with

No associations

Rating

Rotational fine-structure lines of interstellar C2 toward Zeta Persei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Rotational fine-structure lines of interstellar C2 toward Zeta Persei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotational fine-structure lines of interstellar C2 toward Zeta Persei will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1568906