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Dust extinction in starburst galaxies: NGC 1614 and 7714

1994; Oxford University Press; Volume: 266; Issue: 2 Linguagem: Inglês

10.1093/mnras/266.2.431

1365-2966

P. J. Puxley, P. W. J. L. Brand,

Advancements in PLL and VCO Technologies

We present high signal-to-noise ratio observations of the near-infared hydrogen recombination lines |${\rm Pa}\beta$|⁠, |${\rm Br} \gamma$| and |${\rm Br} \alpha$| in the galaxies NGC 1614 and 7714. The data are used in conjunction with existing optical line fluxes to examine the dust extinction towards the star-forming nuclei of these galaxies. In the case of NGC 1614, at least, the conventional model of a foreground absorbing screen is found to be incorrect, resulting in an underestimate of the true extinction.