Browsing by Author "Street, R. A."

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    Young Stellar Objects, Accretion Disks, and Their Variability with Rubin Observatory LSST
    (IOP Publishing, 2023) Bonito, R.; Venuti, L.; Ustamujic, S.; Yoachim, P.; Street, R. A.; Prisinzano, L.; Hartigan, P.; Guarcello, M. G.; Stassun, K. G.; Giannini, T.; Feigelson, E. D.; Garatti, A. Caratti o; Orlando, S.; Clarkson, W. I.; McGehee, P.; Bellm, E. C.; Gizis, J. E.
    Vera C. Rubin Observatory, through the Legacy Survey of Space and Time (LSST), will allow us to derive a panchromatic view of variability in young stellar objects (YSOs) across all relevant timescales. Indeed, both short-term variability (on timescales of hours to days) and long-term variability (months to years), predominantly driven by the dynamics of accretion processes in disk-hosting YSOs, can be explored by taking advantage of the multiband filters option available in Rubin LSST, in particular the u, g, r, i filters that enable us to discriminate between photospheric stellar properties and accretion signatures. The homogeneity and depth of sky coverage that will be achieved with LSST will provide us with a unique opportunity to characterize the time evolution of disk accretion as a function of age and varying environmental conditions (e.g., field crowdedness, massive neighbors, metallicity) by targeting different star-forming regions. In this contribution to the Rubin LSST Survey Strategy Optimization Focus Issue, we discuss how implementing a dense observing cadence to explore short-term variability in YSOs represents a key complementary effort to the Wide–Fast–Deep observing mode that will be used to survey the sky over the full duration of the main survey (≈10 yr). The combination of these two modes will be vital to investigate the connection between the inner-disk dynamics and longer-term eruptive variability behaviors, such as those observed on EX Lupi–type objects.