NDLI: Star Formation in NGC 4038/4039

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Star Formation in NGC 4038/4039

Content Provider	Scilit
Author	Mengel, Sabine Thatte, Niranjan Lehnert, Matthew Genzel, Reinhard
Copyright Year	2001
Description	We performed near infrared integral field spectroscopy of several star clusters and the nuclei of the prototypical merger NGC 4038/39 (“The Antennae”). Near infrared (NIR) images covered both galaxies. The collision of the two gas-rich spiral galaxies has triggered a starburst obvious from a large number of young star clusters. ISO data suggest that the most active star formation occurs in the region where the two galaxy disks overlap. A significant fraction of the total bolometric luminosity of the system is produced there. Since this region is heavily extincted in the optical, the investigation was made in the NIR. Using Brγ emission and CO absorption features as age indicators, we derive the ages and mass estimates of the star clusters from a comparison with stellar synthesis models. Extinction is calculated from the Brγ/Hα ratio. The young, bright star clusters have ages ranging from 4-12 Myrs, while the nuclear starbursts are much older (50-80 Myrs). The overlap region hosts most of the youngest star clusters below ∼8 Myrs, while the northwestern region is dominated by star clusters in the age range between 8 and 12 Myrs. Several regions, including the northern nucleus, show evidence for sequential star formation on small spatial scales (< 100pc).
Related Links	https://www.cambridge.org/core/services/aop-cambridge-core/content/view/59DBD7A9713852ED75BFF1E84EABEC89/S0074180900220986a.pdf/div-class-title-star-formation-in-ngc-4038-4039-div.pdf
Ending Page	207
Page Count	2
Starting Page	206
ISSN	00741809
DOI	10.1017/s0074180900220986
Journal	Symposium - International Astronomical Union
Volume Number	205
Language	English
Publisher	Cambridge University Press (CUP)
Publisher Date	2001-01-01
Access Restriction	Open
Subject Keyword	International Astronomical Union Astronomy and Astrophysics Star Clusters
Content Type	Text
Resource Type	Article

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