A sample of long-period variables in the bar of the Large Magellanic Cloud and evidence for a recent burst of star formation

Details A sample of long-period variables in the bar of the Large Magellanic Cloud and evidence for a recent burst of star formation A sample of long-period variables in the bar of the Large Magellanic Cloud and evidence for a recent burst of star formation

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...290..477w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 290, March 15, 1985, p. 477-486.

Astronomy and Astrophysics

Astrophysics

58

Barred Galaxies, Magellanic Clouds, Main Sequence Stars, Star Formation, Variable Stars, Carbon Stars, Cepheid Variables, Infrared Spectroscopy, Light Curve, Stellar Luminosity, Stellar Magnitude, Stellar Mass, Stellar Spectrophotometry

Scientific paper

Infrared JHK photometry and spectral types have been obtained for a sample of long-period variables in, and to the north of, the bar of the LMC. It is found that the carbon stars and the oxygen-rich stars obey different period-luminosity relations. The period-luminosity distribution of the long-period variables in the central bar of the LMC suggests that (1) the bulk of the stars in this region have main-sequence masses Mms ⪉ 1.6 M_sun; and ages ⪆109yr, and (2) there is a distinct group of stars in this region with Mms ≡ 5 - 6 M_sun; and age ≡6×107yr. The period and luminosity distributions of the Cepheid variables in the central LMC bar also suggest that a burst of star formation occurred in the bar of the LMC ≡6×107yr ago.

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