Seminars
 
ICCUB SEMINAR – The Magellanic Inter-Cloud Project: First spectroscopic evidence of a dwarf stripping a dwarf
 
Location
DAM seminar room (724), 7th floor
Date
22/06/2017 - 22/06/2017
 
The Magellanic Bridge (MB) is a gaseous stream that links the Large (LMC) and Small (SMC) Magellanic Clouds. Current simulations suggest that the MB forms from a recent interaction between the Clouds.

In this scenario, the MB should also have an associated stellar bridge formed by stars tidally stripped from the SMC by the LMC.

There are several observational evidences for these stripped stars, from the presence of intermediate age populations in the MB and carbon stars, to the recent observation of an over-density of RR Lyrae stars offset from the MB. However, spectroscopic confirmation of stripped stars in the MB remains lacking. We have used medium resolution spectra to derive the radial velocities and metallicities of stars in two fields along the MB.

In this talk I will show from both their chemistry and kinematics that the bulk of these stars must have been tidally stripped from the SMC. This is the first spectroscopic evidence for a dwarf galaxy being tidally stripped by a larger dwarf.

Contact email: lbalaguer(a)fqa.ub.edu
 
Attached Documents
Generalitat de CatalunyaUniversitat de BarcelonaUniversitat Autònoma de BarcelonaUniversitat Politècnica de CatalunyaConsejo Superior de Investigaciones CientíficasCentres de Recerca de Catalunya