Fine-resolution analysis of exoplanetary distributions by wavelets: hints of an overshooting iceline accumulation

Standard

Fine-resolution analysis of exoplanetary distributions by wavelets: hints of an overshooting iceline accumulation. / Baluev, Roman V.; Shaidulin, Vakhit S.

In: Astrophysics and Space Science, Vol. 363, No. 9, 192, 01.09.2018.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{f007fb32d294442f97177429d5142467,

title = "Fine-resolution analysis of exoplanetary distributions by wavelets: hints of an overshooting iceline accumulation",

abstract = "We investigate 1D exoplanetary distributions using a novel analysis algorithm based on the continuous wavelet transform. The analysis pipeline includes an estimation of the wavelet transform of the probability density function (p.d.f.) without pre-binning, use of optimized wavelets, a rigorous significance testing of the patterns revealed in the p.d.f., and an optimized minimum-noise reconstruction of the p.d.f. via matching pursuit iterations. In the distribution of orbital periods, P, our analysis revealed a narrow subfamily of exoplanets within the broad family of {"}warm Jupiters{"}, or massive giants with P greater than or similar to 300 d, which are often deemed to be related with the iceline accumulation in a protoplanetary disk. We detected a p.d.f. pattern that represents an upturn followed by an overshooting peak spanning P similar to 300-600 d, right beyond the {"}period valley{"}. It is separated from the other planets by p.d.f. concavities from both sides. It has at least 2-sigma significance. In the distribution of planet radii, R, and using the California Kepler Survey sample properly cleaned, we confirm the hints of a bimodality with two peaks about R =1.3 R-circle plus and R = 2.4 R-circle plus, and the {"}evaporation valley{"} between them. However, we obtain just a modest significance for this pattern, 2-sigma only at the best. Besides, our follow-up application of the Hartigan and Hartigan dip test for unimodality returns 3 per cent false alarm probability (merely 2.2-sigma significance), contrary to 0.14 per cent (or 3.2-sigma), as claimed by Fulton et al. (2017).",

keywords = "Astronomical data bases: miscellaneous, Methods: data analysis, Methods: statistical, Planetary systems, Stars: statistics, STATISTICAL SIGNIFICANCE, TIME-SERIES ANALYSIS, PERIODOGRAM PEAKS, DETERMINISTIC MODEL, ICE LINE, MASS, PLANETARY FORMATION, SPECTRUM",

author = "Baluev, {Roman V.} and Shaidulin, {Vakhit S.}",

year = "2018",

month = sep,

day = "1",

doi = "10.1007/s10509-018-3416-9",

language = "English",

volume = "363",

journal = "Astrophysics and Space Science",

issn = "0004-640X",

publisher = "Wolters Kluwer",

number = "9",

}

RIS

TY - JOUR

T1 - Fine-resolution analysis of exoplanetary distributions by wavelets: hints of an overshooting iceline accumulation

AU - Baluev, Roman V.

AU - Shaidulin, Vakhit S.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - We investigate 1D exoplanetary distributions using a novel analysis algorithm based on the continuous wavelet transform. The analysis pipeline includes an estimation of the wavelet transform of the probability density function (p.d.f.) without pre-binning, use of optimized wavelets, a rigorous significance testing of the patterns revealed in the p.d.f., and an optimized minimum-noise reconstruction of the p.d.f. via matching pursuit iterations. In the distribution of orbital periods, P, our analysis revealed a narrow subfamily of exoplanets within the broad family of "warm Jupiters", or massive giants with P greater than or similar to 300 d, which are often deemed to be related with the iceline accumulation in a protoplanetary disk. We detected a p.d.f. pattern that represents an upturn followed by an overshooting peak spanning P similar to 300-600 d, right beyond the "period valley". It is separated from the other planets by p.d.f. concavities from both sides. It has at least 2-sigma significance. In the distribution of planet radii, R, and using the California Kepler Survey sample properly cleaned, we confirm the hints of a bimodality with two peaks about R =1.3 R-circle plus and R = 2.4 R-circle plus, and the "evaporation valley" between them. However, we obtain just a modest significance for this pattern, 2-sigma only at the best. Besides, our follow-up application of the Hartigan and Hartigan dip test for unimodality returns 3 per cent false alarm probability (merely 2.2-sigma significance), contrary to 0.14 per cent (or 3.2-sigma), as claimed by Fulton et al. (2017).

AB - We investigate 1D exoplanetary distributions using a novel analysis algorithm based on the continuous wavelet transform. The analysis pipeline includes an estimation of the wavelet transform of the probability density function (p.d.f.) without pre-binning, use of optimized wavelets, a rigorous significance testing of the patterns revealed in the p.d.f., and an optimized minimum-noise reconstruction of the p.d.f. via matching pursuit iterations. In the distribution of orbital periods, P, our analysis revealed a narrow subfamily of exoplanets within the broad family of "warm Jupiters", or massive giants with P greater than or similar to 300 d, which are often deemed to be related with the iceline accumulation in a protoplanetary disk. We detected a p.d.f. pattern that represents an upturn followed by an overshooting peak spanning P similar to 300-600 d, right beyond the "period valley". It is separated from the other planets by p.d.f. concavities from both sides. It has at least 2-sigma significance. In the distribution of planet radii, R, and using the California Kepler Survey sample properly cleaned, we confirm the hints of a bimodality with two peaks about R =1.3 R-circle plus and R = 2.4 R-circle plus, and the "evaporation valley" between them. However, we obtain just a modest significance for this pattern, 2-sigma only at the best. Besides, our follow-up application of the Hartigan and Hartigan dip test for unimodality returns 3 per cent false alarm probability (merely 2.2-sigma significance), contrary to 0.14 per cent (or 3.2-sigma), as claimed by Fulton et al. (2017).

KW - Astronomical data bases: miscellaneous

KW - Methods: data analysis

KW - Methods: statistical

KW - Planetary systems

KW - Stars: statistics

KW - STATISTICAL SIGNIFICANCE

KW - TIME-SERIES ANALYSIS

KW - PERIODOGRAM PEAKS

KW - DETERMINISTIC MODEL

KW - ICE LINE

KW - MASS

KW - PLANETARY FORMATION

KW - SPECTRUM

UR - http://www.scopus.com/inward/record.url?scp=85052322706&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/fineresolution-analysis-exoplanetary-distributions-wavelets-hints-overshooting-iceline-accumulation

U2 - 10.1007/s10509-018-3416-9

DO - 10.1007/s10509-018-3416-9

M3 - Article

VL - 363

JO - Astrophysics and Space Science

JF - Astrophysics and Space Science

SN - 0004-640X

IS - 9

M1 - 192

ER -

ID: 33231533