2005/09/15 by L. D. Matthews, Lynn T. Matthews
Mathematics · Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Brightness #Galaxies: Formation, Evolution, Phenomena #Galaxy #Least significant bit #Mathematics #Physics #Spiral (railway) #Spiral galaxy #Statistics #Stellar, planetary, and galactic studies #Surface brightness #astro-ph
paper · pdf · doi:10.1007/978-1-4020-5573-7_59
published in Astrophysics and space science proceedings, 347-352 (Springer International Publishing) · 6 pages; to appear in the proceedings "Island Universes - Structure and Evolution of Disk Galaxies", a conference held in Terschelling, the Netherlands, July 2005, R. S. de Jong, editor, (Springer: Dordrecht)
arxiv created 2005/09/15 · openalex publication_date 2007/05/24 · arxiv updated 2015/06/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
I summarize some results from the recent CO survey of late-type, low surface brightness (LSB) spiral galaxies by Matthews et al. (2005). We have now detected CO emission from six late-type, LSB spirals, demonstrating that despite their typical low metallicities and low mean gas surface densities, some LSB galaxies contain a molecular medium that is traced by CO. We find that the CO-detected LSB spirals adhere to the same MH2-FIR correlation as brighter galaxies. We also find a significant drop-off in the detectability of CO among low-to-intermediate surface brightness galaxies with Vrot<~90 km/s, pointing toward fundamental changes in the physical conditions of the ISM with decreasing disk mass.