Educação matemática pela arte
Gusmão, Lucimar Donizete
2013-08-28
Search results
17 records were found.
Comment: 7 pages, 10 figures, Publication of Astronomical Society of Japan, in
press
Comment: 9 pages, 5 figures, accepted for publication in PASJ
Comment: 15 pages, 4 figures, 11 tables, accepted for publication in PASJ
Comment: 10 pages, 4 figures, submitted to ApJ
Comment: 17 pages, 13 figures, accepted for publication in ApJ
Comment: 5 pages, 3 figures, 2 tables, accepted for publication in MNRAS
Comment: 30 pages, 3 figures, 3 tables, to be published in the Publication of
the Astronomical Society of Japan issued on 2006 October 25
Comment: 24 pages, 10 figures, accepted by PASJ, final version. The SAGA
database is available at http://saga.sci.hokudai.ac.jp
Comment: 25 pages, 13 figures, PASJ in press, version with high resolution
figures is available via
http://www.nro.nao.ac.jp/~kmuraoka/m83paper/m83nma.pdf
We report systematic variations in the emission line ratio of the CO J = 2-1 and J = 1-0 transitions (R_(2-1/1-0)) in the grand-design spiral galaxy M51. The R_(2-1/1-0) ratio shows clear evidence for the evolution of molecular gas from the upstream interarm regions into the spiral arms and back into the downstream interarm regions. In the interarm regions, R_(2-1/1-0) is typically <0.7 (and often 0.4-0.6); this is similar to the ratios observed in Galactic giant molecular clouds (GMCs) with low far-infrared luminosities. However, the ratio rises to >0.7 (often 0.8-1.0) in the spiral arms, particularly at the leading (downstream) edge of the molecular arms. These trends are similar to those seen in Galactic GMCs with OB star formation (presumably in the Galactic spiral arms). R_(2-1/1-0) is also high, ~0.8-1.0, in the central region of...
