A high-resolution imaging survey of massive young stellar objects in the Magellanic Clouds
Venu M. Kalari, Ricardo Salinas, Hans Zinnecker, Monica Rubio, Gregory Herczeg, Morten Andersen
arXiv:2406.17983v1 Announce Type: new
Abstract: Constraints on the binary fraction of young massive stellar objects (mYSOs) are important for binary and massive star formation theory. Here, we present speckle imaging of 34 mYSOs located in the Large (1/2 $Z_{odot}$) and Small Magellanic Clouds ($sim$1/5 $Z_{odot}$), probing projected separations between the 2000-20000 au (at angular scales of 0.02-0.2″) range, for stars above 8 $M_{odot}$. We find two wide binaries in the Large Magellanic Cloud (from a sample of 23 targets), but none in a sample of 11 in the Small Magellanic Cloud, leading us to adopt a wide binary fraction of 9$pm$5%, and $arXiv:2406.17983v1 Announce Type: new
Abstract: Constraints on the binary fraction of young massive stellar objects (mYSOs) are important for binary and massive star formation theory. Here, we present speckle imaging of 34 mYSOs located in the Large (1/2 $Z_{odot}$) and Small Magellanic Clouds ($sim$1/5 $Z_{odot}$), probing projected separations between the 2000-20000 au (at angular scales of 0.02-0.2″) range, for stars above 8 $M_{odot}$. We find two wide binaries in the Large Magellanic Cloud (from a sample of 23 targets), but none in a sample of 11 in the Small Magellanic Cloud, leading us to adopt a wide binary fraction of 9$pm$5%, and $