X-Rays In Cepheids: Xmm-Newton Observations Of Eta Aql*

X-ray bursts have recently been discovered in the Cepheids delta Cep and beta Dor modulated by the pulsation cycle. We have obtained an observation of the Cepheid eta Aql with the XMM-Newton satellite at the phase of maximum radius; the phase at which there is a burst of X-rays in delta Cep. No X-rays were seen from the Cepheid eta Aql at this phase, and the implications for Cepheid upper atmospheres are discussed. We have also used the combination of X-ray sources, as well as Gaia and 2MASS data, to search for a possible grouping around the young intermediate mass Cepheid. No indication of such a group was found.