Near Infrared Observations of the Local Arm

C. Porcel; F. Garzon; J. Jimenez-Vicente; E. Battaner

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arXiv · astro-ph/9802015

Near Infrared Observations of the Local Arm

C. Porcel·F. Garzon·J. Jimenez-Vicente·E. Battaner

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Abstract

Observations of the Local Arm have been carried out in the near-infrared with the 1.5 m ``Carlos Sánchez'' telescope in Tenerife. A model of the disc with adjustable parameters fitted to reproduce the DIRBE-COBE survey, has been subtracted from the observational data in order to obtain a clean map of the Local Arm, uncontaminated by other components of the disc. The arm is more than 70 pc over the plane and is wider than 200 pc. At a latitude of about $80^\circ$ the deviation of the arm from the the galactic plane is so large that was only partially observed with our observational window of $\triangle b = \pm 6^\circ$. The elevation over the plane vanishes and the width decreases as the Arm comes closer to the Sun.

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C. Porcel, F. Garzon, J. Jimenez-Vicente, E. Battaner. 1998-02-02. Near Infrared Observations of the Local Arm. https://arxiv.org/abs/astro-ph/9802015

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