Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...250..534k&link_type=abstract
Astrophysical Journal, Part 1, vol. 250, Nov. 15, 1981, p. 534-550.
Astronomy and Astrophysics
Astrophysics
11
Milky Way Galaxy, O Stars, Spiral Galaxies, Star Formation, Density Wave Model, H Ii Regions, Hydrogen Ions, Stellar Models
Scientific paper
Distributions of giant H II regions and OB associations are used to determine the reproductivity, y, for O stars in M33 and the percentage of O stars formed by a spiral density wave. Star formation in M33 is compared to star formation in the earth Galaxy; both galaxies are characterized by an empirical linear relation between y and tau(seq), the time interval between sequential generations. For both galaxies, the larger the values of tau(seq), the smaller the value of y and the smaller percentage of O stars formed by sequential star formation. The results indicate that in the central disk of M33 at an extreme tau(seq) value = 3,000,000 years, y = 0.94 and only 6% of the O stars are formed by a density wave; if the typical value of tau(seq) is 35,000,000 years, then y = 0.51 and 49% of the O stars are formed by the spiral density wave. It is concluded that y is a factor of 1.1-3.1 larger in M33 than in the earth Galaxy. The percentage of O stars owing their origin to a spiral density wave is a factor of 1.4-11.7 larger in the earth Galaxy than in M33. The larger values of y in M33 are a result of the higher surface densities of gas and the smaller drift speeds in M33.
No associations
LandOfFree
Star formation in M33 and in our Galaxy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Star formation in M33 and in our Galaxy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Star formation in M33 and in our Galaxy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-743660