Observations of the Local Arm have been carried out in the near-infrared with the 1.5 m ``Carlos S\'anchez'' 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∘ the deviation of the arm from the the galactic plane is so large that was only partially observed with our observational window of △b=±6∘. The elevation over the plane vanishes and the width decreases as the Arm comes closer to the Sun.
@article{arxiv.astro-ph/9802015,
title = {Near Infrared Observations of the Local Arm},
author = {C. Porcel and F. Garzon and J. Jimenez-Vicente and E. Battaner},
journal= {arXiv preprint arXiv:astro-ph/9802015},
year = {2016}
}
Comments
6 pages, 12 figures, using A&A macros v4. Accepted for publication in A&A. Also available as gzipped postscript at http://deneb.ugr.es/papers/brazonew.ps.gz