Infrared reflection nebulae in S 106 and NGC 7538 E

Astronomy and Astrophysics – Astronomy

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Infrared Astronomy, Infrared Reflection, Linear Polarization, Nebulae, Stellar Envelopes, Stellar Evolution, Astronomical Photometry, Astronomical Spectroscopy, Hydrogen Clouds, Light Scattering, Polarimetry, Stellar Models

Scientific paper

Two micron linear polarimetry of the S 106 and NGC 7538 E regions reveal the presence of infrared reflection nebulae, which may confuse the count of luminosity sources in a region of star formation. S 106 and NGC 7538/IRS 9 are considered the only luminosity sources in their respective regions, and the polarization of S 106/Source 3 is probably due to absorption by aligned grains. Moreover, the reflection nebula model for NGC 7538 E is best supported if the polarization of NGC 7538/IRS 9 itself is due to the absorption by aligned grains.

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