PT Journal AU Johnson, MA Betz, AL McLaren, RA Townes, CH Sutton, EC TI Nonthermal 10 micron CO[sub:2] emission lines in the atmospheres of Mars and Venus SO Astron. Astrophys. JI A&A PY 1976 BP 145 VL 208 DE carbon dioxide; emission spectra; infrared spectra; mars atmosphere; nonthermal radiation; optical heterodyning; planetary radiation; venus atmosphere; absorption spectra; energy transfer; line spectra; molecular absorption; molecular collisions; near infrared radiation; solar flux ER