SIMBAD references

2016MNRAS.462L.101A - Mon. Not. R. Astron. Soc., 462, L101-L105 (2016/October-2)

Dipper discs not inclined towards edge-on orbits.

ANSDELL M., GAIDOS E., WILLIAMS J.P., KENNEDY G., WYATT M.C., LACOURSE D.M., JACOBS T.L. and MANN A.W.

Abstract (from CDS):

The so-called dipper stars host circumstellar discs and have optical and infrared light curves that exhibit quasi-periodic or aperiodic dimming events consistent with extinction by transiting dusty structures orbiting in the inner disc. Most of the proposed mechanisms explaining the dips - i.e. occulting disc warps, vortices, and forming planetesimals - assume nearly edge-on viewing geometries. However, our analysis of the three known dippers with publicly available resolved sub-mm data reveals discs with a range of inclinations, most notably the face-on transition disc J1604-2130 (EPIC 204638512). This suggests that nearly edge-on viewing geometries are not a defining characteristic of the dippers and that additional models should be explored. If confirmed by further observations of more dippers, this would point to inner disc processes that regularly produce dusty structures far above the outer disc mid-plane in regions relevant to planet formation.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): planet-disc interactions - protoplanetary discs - stars: variables: T Tauri, Herbig Ae/Be - stars: variables: T Tauri, Herbig Ae/Be

CDS comments: In Table 1, 2MASS J16253849-2613540 is a probable misprint for 2MASS J16270659-2441488.

Simbad objects: 9

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2019.12.12-09:00:36

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