Cited by 140Stellar, planetary, and galactic studiesAstrophysics and Star Formation StudiesAstro and Planetary Science

The DOI matches its Crossref record; 100 of the 107 references it cites were found in a registry or an index; 43 of the 93 sources its claims cite were checked for support.

PLANETARY CONSTRUCTION ZONES IN OCCULTATION: DISCOVERY OF AN EXTRASOLAR RING SYSTEM TRANSITING A YOUNG SUN-LIKE STAR AND FUTURE PROSPECTS FOR DETECTING ECLIPSES BY CIRCUMSECONDARY AND CIRCUMPLANETARY DISKS

Open access

Abstract

The large relative sizes of circumstellar and circumplanetary disks imply that they might be seen in eclipse in stellar light curves. We estimate that a survey of ~10^4 young (~10 million year old) post-accretion pre-main-sequence stars monitored for ~10 years should yield at least a few deep eclipses from circumplanetary disks and disks surrounding low-mass companion stars. We present photometric and spectroscopic data for a pre-main-sequence K5 star (1SWASP J140747.93-394542.6 = ASAS J140748-3945.7), a newly discovered ~0.9 M_sun member of the ~16 Myr old Upper Centaurus-Lupus subgroup of Sco-Cen at a kinematic distance of 128 +/- 13 pc. This star exhibited a remarkably long, deep, and complex eclipse event centered on 2007 April 29 (as discovered in Super Wide Angle Search for Planets (SuperWASP) photometry, and with portions of the dimming confirmed by All Sky Automated Survey (ASAS) data). At least five multi-day dimming events of >0.5 mag are identified, with a >3.3 mag deep eclipse bracketed by two pairs of ~1 mag eclipses symmetrically occurring +/-12 days and +/-26 days before and after. Hence, significant dimming of the star was taking place on and off over at least a ~54 day period in 2007, and a strong >1 mag dimming event occurring over a ~12 day span. We place a firm lower limit on the period of 850 days (i.e., the orbital radius of the eclipser must be >1.7 AU and orbital velocity must be <22 km s^-1).

Overview

Integrity signals

Registry

Crossref · 10.1088/0004-6256/143/3/72

Cites

100 of 100 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

109 Own interpretation · 36 Own result · 36 No basis given · 18 Partly supported · 17 Sources not found · 11 No full text of the sources · 9 Supported · 5 Not checked yet · 2 Couldn’t confirm · 1 Supported so far · 1 Mixed support · 1 Not supported · accuracy not yet measured

Show all 138 claims

  • Probably not a substantial claim. 44
  • It may state two separate claims as one. 73
  • The quote only partly states this claim. 3
108 of 108
  • The authors state this as an assumption.

    The rings have optical opacity similar to Saturn's rings.

    “(if the rings have optical opacity similar to Saturn's rings)”
  • The authors state this as an assumption.

    ξ is similar for different circumplanetary disks.

    “If ξ is similar for different circumplanetary disks”
  • The paper relies on this without support.

    The radii of circumstellar and circumplanetary disks can vastly exceed those of stars and planets.

    “The radii of circumstellar and circumplanetary disks can vastly exceed those of stars and planets.”
  • The paper relies on this without support.

    Natural satellites are a ubiquitous feature among the giant planets in our solar system, and most likely among extrasolar gas giants.

    “natural satellites are a ubiquitous feature among the giant planets in our solar system, and most likely among extrasolar gas giants.”
  • The authors state this as an assumption.

    The tidal deformations of the primary and secondary objects are negligible.

    “we assume the tidal deformations of both objects to be negligible because the length of the eclipse and minimum period implies a large disk and distance to the primary”
  • The authors state this as an assumption.

    The disk and rings are thin debris disks of dust with uniform density and opacity.

    “The disk and rings are assumed to be thin debris disks of dust with uniform density and opacity.”
  • The authors state this as an assumption.

    The gaps in the disk are twice the Hill radius of an object embedded in the disk.

    “If we assume that the gaps are twice the Hill radius of an objected embedded in the disk”
  • The authors state this as an assumption.

    The disk is of similar size to typical planetary orbits (about 10 AU) in the one-time occultation scenario.

    “Assuming the disk to be of similar size to typical planetary orbits (∼10 AU)”
  • The paper relies on this without support.

    The gas giant frequency f_g ~ 0.05 derived for FGK field stars applies to the young pre-MS sample considered.

    “The distribution gives a probability of an FGK star hosting a gas giant between 1-5 AU (365-1825 days), interior to this (2-365 days), and from 5-20 AU, in each case of about f g ∼ 0.05 or 5%.”
    “Restricting our study to planets between 1 and 5 AU (with f g ∼ 0.05) and monitoring them for 10 years (approximately the orbital time at 5 AU for ∼1 M ), the above fraction f c suggests that if we monitor 10 4 stars 10 7 years old, then ∼2 of them should exhibit circumplanetary disk eclipses.”
  • The paper relies on this without support.

    Circumplanetary disks can persist after circumstellar disk dissipation with sufficient optical depth to produce detectable eclipses.

    “We consider a sample of stars restricted so that they have already depleted circumstellar disks (i.e., are post-accretion pre-MS stars) but are young enough that they could host circumplanetary disks of sufficient optical depth to produce detectable eclipses.”
10 of 10

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

4 of 4

Citations

Cites

Show all 107 references

Research works printed but not linked: 15

  1. Baraffe, 1998, A&A, 337, 403
  2. Cutri, 2003, VizieR Online Data Catalog, 2246, 0
  3. D'Antona, 1997, Mem. Soc. Astron. Ital., 68, 807
  4. de Pater, 2001, Planetary Sciences, 544
  5. Duchêne, 2007, Protostars and Planets V, 379
  6. Graczyk, 2011, Acta Astron., 61, 103
  7. Khaliullin, 2006, IBVS, 5722, 1
  8. Monin, 2007, Protostars and Planets V, 395
  9. Pecaut, 2011, ApJ
  10. Perryman, 1997, The Hipparcos and Tycho Catalogues, 1200
  11. Pojmanski, 2002, Acta Astron., 52, 397
  12. Preibisch, 2008, Handbook of Star Forming Regions, II, 235
  13. Siess, 2000, A&A, 358, 593
  14. Voges, 1999, A&A, 349, 389
  15. Voges, 2000, IAU Circ., 7432, 3

Cited by

Sorted by citations

Metadata

Authors
Mamajek, E. E., Quillen, A. C., Pecaut, M. J., Moolekamp, F., Scott, E. L., Kenworthy, M. A., Cameron, A. C., & Parley, N. R.
Affiliations
  • University of Rochester (US)
  • Leiden University (NL)
  • University of St Andrews (GB)
Venue
The Astronomical Journal
Published
2012-02-10
Volume
143
Issue
3
Pages
72
ISSN
  • 0004-6256 (ISSN-L)
  • 1538-3881
OpenAlex
W2128350470
Cited by
140
References
107
Citations by year
2026: 2 · 2025: 4 · 2024: 10 · 2023: 3 · 2022: 7 · 2021: 8 · 2020: 4 · 2019: 13 · 2018: 16 · 2017: 15 · 2016: 16 · 2015: 21 · 2014: 12 · 2013: 6 · 2012: 1
FWCI
6.99
Type
journal article
Language
en
Open access
Locations
  • The Astronomical Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Leiden Repository (Leiden University) (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Funders
  • National Science Foundation (1008908, 0907841)
  • National Aeronautics and Space Administration
  • California Institute of Technology
  • University of Rochester
  • University of Leicester
  • Queen's University Belfast
  • Queen's University
  • Keele University
  • Jet Propulsion Laboratory
  • Science and Technology Facilities Council (PP/F000065/1)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysics and Star Formation Studies
  • Physical Sciences › Earth and Planetary Sciences › Space and Planetary Science › Astro and Planetary Science
Keywords
circumplanetary disks, circumstellar disks, eclipses, stellar light curves, young Sun-like stars, pre-main-sequence stars, SuperWASP, planet formation, disk gaps, stellar kinematics

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

A language model drew the claims from the paper on 2026-10-11, under version 3 of the claim definition (model deepseek-v4.1-flash, prompt extract-v3).

A second model labelled each claim on 2026-10-11 (model jev-1.13-20260917, definition revision gold-guideline-v0.2).

Cited sources are checked with a language model’s help (gpt-6-sol).

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review