Detection of ca II absorption triplet in a circumnuclear H II region of ngc 3310
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Date
1990Author
Type
Abstract
We have obtained long slit spectrophotometry across NGC 3310, a lurninous galaxy with cucumnuclear bursts of star formation, covering the spectral range from λ3650 to 9700 Å. In one giant star-forrning region, the near-IR Ca II absorption lines (a signature of young supergiants) was detected with a strength similar to that of the nuclear region. This is, to our knowledge, the first detection of the IR Ca II triplet in an extragalactic giant H li region and confirms theoretical predictions that, ...
We have obtained long slit spectrophotometry across NGC 3310, a lurninous galaxy with cucumnuclear bursts of star formation, covering the spectral range from λ3650 to 9700 Å. In one giant star-forrning region, the near-IR Ca II absorption lines (a signature of young supergiants) was detected with a strength similar to that of the nuclear region. This is, to our knowledge, the first detection of the IR Ca II triplet in an extragalactic giant H li region and confirms theoretical predictions that, after some 4 Myr, red supergiants should appear in bursts of star formation. ...
In
Monthly notices of the royal astronomical society. London. Vol. 242, no. 2 (Jan. 1990), p. 48p-51p
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Foreign
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