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V1180 Cas is a young variable that has shown strong photometric fluctuations(Delta_I~6mag) in the recent past, which have been attributed to events ofenhanced accretion. The source has entered a new high-brightness state inSept.2013, which we have previously analyzed through optical and near-IRspectroscopy. To investigate the current active phase of V1180 Cas, weperformed observations with the Chandra satellite to study the X-ray emissionfrom the object and its connection to accretion episodes. Chandra observationswere performed in early Aug.2014. Complementary JHK photometry and J-bandspectra were taken at our Campo Imperatore facility to relate the X-ray andnear-IR emission from the target. We observe a peak of X-ray emission at thenominal position of V1180 Cas. This signal corresponds to an X-ray luminosityL_X(0.5-7 kev) in the range 0.8-2.2e30 erg/s. Based on the relatively shortduration of the dim states in the light curve and on stellar luminosityconsiderations, we explored the possibility that the brightness minima of V1180Cas are driven by extinction variations. From the analysis of the spectralenergy distribution of the high state we infer a stellar luminosity of 0.8-0.9Lsun and find that the derived L_X is comparable to the average X-rayluminosities of T Tauri stars. Moreover, the X-ray luminosity is lower than theX-ray emission levels of 5e30 -1e31 erg/s detected at outbursts in similarlow-mass objects. Our analysis suggests that at least part of the photometricfluctuations of V1180 Cas might be extinction effects rather than the result ofaccretion excess emission. However, as the source displays spectral featuresindicative of active accretion, we speculate that its photometric variationsmight be the result of a combination of accretion-induced and extinction-driveneffects, as suggested for other young variables, such as V1184 Tau and V2492Cyg.

First X-ray dectection of the young variable V1180 Cas