Young Stellar Objects, Accretion Disks, and Their Variability with Rubin Observatory LSST

Journal
Date Issued
2023
Author(s)
•
•
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Yoachim, P.
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Street, R. A.
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Hartigan, P.
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Stassun, K. G.
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Feigelson, E. D.
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Clarkson, W. I.
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McGehee, P.
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Bellm, E. C.
•
Gizis, J. E.
DOI
Abstract
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.
Volume
265
Issue
1
Start page
27
Uri
Url
Issn Identifier
0067-0049
Ads BibCode
2023ApJS..265...27B
Rights
open.access
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