# The peculiar dipping events in the disc-bearing young-stellar object EPIC 204278916

@article{Scaringi2016ThePD,
title={The peculiar dipping events in the disc-bearing young-stellar object EPIC 204278916},
author={Simone Scaringi and Carlo Felice Manara and Scott A. Barenfeld and Paul J. Groot and Andrea Isella and Matthew A. Kenworthy and Christian Knigge and Thomas J. Maccarone and Luca Ricci and Mepoui A Mpe and ESA-Estec and Caltech and RU Nijmegen and Rice and Leiden and Soton and Ttu and Cfa and Hawaii},
journal={Monthly Notices of the Royal Astronomical Society},
year={2016},
volume={463},
pages={2265-2272}
}
• Published 25 August 2016
• Physics, Geology
• Monthly Notices of the Royal Astronomical Society
EPIC 204278916 has been serendipitously discovered from its K2 light curve that displays irregular dimmings of up to 65 per cent for ≈25 consecutive days out of 78.8 d of observations. For the remaining duration of the observations, the variability is highly periodic and attributed to stellar rotation. The star is a young, low-mass (M-type) pre-main-sequence star with clear evidence of a resolved tilted disc from Atacama Large Millimeter/submillimeter Array (ALMA) observations. We examine the…

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## References

SHOWING 1-10 OF 39 REFERENCES

### YOUNG “DIPPER” STARS IN UPPER SCO AND OPH OBSERVED BY K2

• Physics, Geology
• 2016
We present ten young (≲10 Myr) late-K and M dwarf stars observed in K2 Campaign 2 that host protoplanetary disks and exhibit quasi-periodic or aperiodic dimming events. Their optical light curves

### Dippers and dusty disc edges: new diagnostics and comparison to model predictions

• Physics, Geology
• 2017
We revisit the nature of large dips in flux from extinction by dusty circumstellar material that is observed by Kepler for many young stars in the Upper Sco and $\rho$ Oph star formation regions.

### The Rotation Period Distribution of Pre-Main-Sequence Stars in and around the Orion Nebula

• Physics
• 1999
We report rotation periods for 254 stars in an area 40′ × 80′ centered on the Orion Nebula. We show that these stars are likely members of the young (∼106 yr) Orion OBIc/d association. The rotation

### Magnetospheric accretion-ejection processes in the classical T Tauri star AA Tauri

• Physics
• 2007
Context. Accretion and ejection are complex and related processes that vary on various timescales in young stars. Aims. We intend to investigate the accretion and outflow dynamics and their

### SHADOWS CAST BY A WARP IN THE HD 142527 PROTOPLANETARY DISK

• Physics, Geology
• 2014
Detailed observations of gaps in protoplanetary disks have revealed structures that drive current research on circumstellar disks. One such feature is the two intensity nulls seen along the outer

### Accretion dynamics and disk evolution in NGC 2264: a study based on the Corot photometric observations

• Physics, Geology
• 2010
The young cluster NGC 2264 was observed with the Corot satellite for 23 days uninterruptedly in March 2008 with unprecedent photometric accuracy. We present here the first results of the analysis of

### Mass and period limits on the ringed companion transiting the young star J1407

• Physics, Geology
• 2015
The young (∼16 Myr) pre-main-sequence star in Sco–Cen 1SWASP J140747.93−394542.6, hereafter referred to as J1407, underwent a deep eclipse in 2007 April, bracketed by several shallower eclipses in

### MODELING GIANT EXTRASOLAR RING SYSTEMS IN ECLIPSE AND THE CASE OF J1407B: SCULPTING BY EXOMOONS?

• Physics, Geology
• 2015
The light curve of 1SWASP J140747.93-394542.6, a ∼16 Myr old star in the Sco-Cen OB association, underwent a complex series of deep eclipses that lasted 56 days, centered on 2007 April. This light

### CSI 2264: Accretion process in classical T Tauri stars in the young cluster NGC 2264

• Physics
• 2015
Our goal is to relate the photometric and spectroscopic variability of classical T Tauri stars, of the star-forming cluster NGC 2264, to the physical processes acting in the stellar and circumstellar

### THE DISK POPULATION OF THE UPPER SCORPIUS ASSOCIATION

• Physics, Geology
• 2012
We present photometry at 3–24 μm for all known members of the Upper Scorpius association (τ ∼ 11 Myr) based on all images of these objects obtained with the Spitzer Space Telescope and the Wide-field