2003/10/14 by Annapurni Subramaniam, Subramaniam, Annapurni
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0310349
10 pages with 4 figures. ApJ Letters (in press)
arxiv created 2003/10/14 · openalex publication_date 2003/10/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The geometry of the LMC bar is studied using the de-reddened mean magnitudes of the red clump stars (I0) from the OGLE II catalogue. The value of I0 is found to vary in the east-west direction such that both the east and the west ends of the bar are closer to us with respect to the center of the bar. The maximum observed variation has a statistical significance of more than 7.6 σ with respect to the maximum value of random error. The variation in I0 indicates the presence of warp in the bar of LMC. The warp and the structures seen in the bar indicate that the bar could be a dynamically disturbed structure.