η Carinae 2009.0: One of the Most Remarkable Stars in the Sky

Details η Carinae 2009.0: One of the Most Remarkable Stars in the Sky η Carinae 2009.0: One of the Most Remarkable Stars in the Sky

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007msngr.130...32s&link_type=abstract

The Messenger, vol. 130, p. 32-35

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Scientific paper

η Carinae is one of the most luminous and massive stars in the Galaxy. The star underwent a major eruption in 1838, followed by a second maximum a few decades later and a low-gradient brightening to the present. The central source of η Car is a highly-eccentric binary with a period of 5.54 years. The photometric and interferometric monitoring programmes with ESO telescopes are summarised. On the occasion of the forthcoming periastron passage in 2009.0, the star will be the target of intensive photometric, spectroscopic and interferometric monitoring from Chile and other southern observatories.

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