Extreme Conditions in a Close Analog to the Young Solar System: Herschel Observations of epsilon Eridani

J. S. Greaves; B. Sibthorpe; B. Acke; E. E. Pantin; B. Vandenbussche; G. Olofsson; C. Dominik; M. J. Barlow; G. J. Bendo; J. A. D. L. Blommaert; A. Brandeker; B. L. de Vries; W. R. F. Dent; J. Di Francesco; M. Fridlund; W. K. Gear; P. M. Harvey; M. R. Hogerheijde; W. S. Holland; R. J. Ivison; R. Liseau; B. C. Matthews; G. L. Pilbratt; H. J. Walker; C. Waelkens

doi:10.1088/2041-8205/791/1/L11

Extreme Conditions in a Close Analog to the Young Solar System: Herschel Observations of epsilon Eridani

J. S. Greaves, B. Sibthorpe, B. Acke, E. E. Pantin, B. Vandenbussche, G. Olofsson, C. Dominik, M. J. Barlow, G. J. Bendo, J. A. D. L. Blommaert, A. Brandeker, B. L. de Vries, W. R. F. Dent, J. Di Francesco, M. Fridlund, W. K. Gear, P. M. Harvey, M. R. Hogerheijde, W. S. Holland, R. J. IvisonR. Liseau, B. C. Matthews, G. L. Pilbratt, H. J. Walker, C. Waelkens

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Abstract

Far-infrared Herschel images of the epsilon Eridani system, seen at a fifth of the Sun's present age, resolve two belts of debris emission. Fits to the 160 μm PACS image yield radial spans for these belts of 12-16 and 54-68 AU. The south end of the outer belt is ≈10% brighter than the north end in the PACS+SPIRE images at 160, 250, and 350 μm, indicating a pericenter glow attributable to a planet "c." From this asymmetry and an upper bound on the offset of the belt center, this second planet should be mildly eccentric (ec ≈ 0.03-0.3). Compared to the asteroid and Kuiper Belts of the young Sun, the epsilon Eri belts are intermediate in brightness and more similar to each other, with up to 20 km sized collisional fragments in the inner belt totaling ≈5% of an Earth mass. This reservoir may feed the hot dust close to the star and could send many impactors through the Habitable Zone, especially if it is being perturbed by the suspected planet epsilon Eri b, at semi-major axis ≈3 AU.

Original language	English
Article number	L11
Number of pages	5
Journal	The Astrophysical Journal. Letters
Volume	791
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/791/1/L11
Publication status	Published - Aug 2014

Keywords

circumstellar matter
planet-disk interactions
stars: individual: epsilon Eridani

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1088/2041-8205/791/1/L11

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Greaves, J. S., Sibthorpe, B., Acke, B., Pantin, E. E., Vandenbussche, B., Olofsson, G., Dominik, C., Barlow, M. J., Bendo, G. J., Blommaert, J. A. D. L., Brandeker, A., de Vries, B. L., Dent, W. R. F., Di Francesco, J., Fridlund, M., Gear, W. K., Harvey, P. M., Hogerheijde, M. R., Holland, W. S., ... Waelkens, C. (2014). Extreme Conditions in a Close Analog to the Young Solar System: Herschel Observations of epsilon Eridani. The Astrophysical Journal. Letters, 791(1), Article L11. https://doi.org/10.1088/2041-8205/791/1/L11

@article{b6936439708d4e62bdba3f8e2c4f9b0d,

title = "Extreme Conditions in a Close Analog to the Young Solar System: Herschel Observations of epsilon Eridani",

abstract = "Far-infrared Herschel images of the epsilon Eridani system, seen at a fifth of the Sun's present age, resolve two belts of debris emission. Fits to the 160 μm PACS image yield radial spans for these belts of 12-16 and 54-68 AU. The south end of the outer belt is ≈10% brighter than the north end in the PACS+SPIRE images at 160, 250, and 350 μm, indicating a pericenter glow attributable to a planet {"}c.{"} From this asymmetry and an upper bound on the offset of the belt center, this second planet should be mildly eccentric (ec ≈ 0.03-0.3). Compared to the asteroid and Kuiper Belts of the young Sun, the epsilon Eri belts are intermediate in brightness and more similar to each other, with up to 20 km sized collisional fragments in the inner belt totaling ≈5% of an Earth mass. This reservoir may feed the hot dust close to the star and could send many impactors through the Habitable Zone, especially if it is being perturbed by the suspected planet epsilon Eri b, at semi-major axis ≈3 AU.",

keywords = "circumstellar matter, planet-disk interactions, stars: individual: epsilon Eridani",

author = "Greaves, {J. S.} and B. Sibthorpe and B. Acke and Pantin, {E. E.} and B. Vandenbussche and G. Olofsson and C. Dominik and Barlow, {M. J.} and Bendo, {G. J.} and Blommaert, {J. A. D. L.} and A. Brandeker and {de Vries}, {B. L.} and Dent, {W. R. F.} and {Di Francesco}, J. and M. Fridlund and Gear, {W. K.} and Harvey, {P. M.} and Hogerheijde, {M. R.} and Holland, {W. S.} and Ivison, {R. J.} and R. Liseau and Matthews, {B. C.} and Pilbratt, {G. L.} and Walker, {H. J.} and C. Waelkens",

year = "2014",

month = aug,

doi = "10.1088/2041-8205/791/1/L11",

language = "English",

volume = "791",

journal = "The Astrophysical Journal. Letters",

issn = "2041-8205",

publisher = "American Astronomical Society",

number = "1",

}

Greaves, JS, Sibthorpe, B, Acke, B, Pantin, EE, Vandenbussche, B, Olofsson, G, Dominik, C, Barlow, MJ, Bendo, GJ, Blommaert, JADL, Brandeker, A, de Vries, BL, Dent, WRF, Di Francesco, J, Fridlund, M, Gear, WK, Harvey, PM, Hogerheijde, MR, Holland, WS, Ivison, RJ, Liseau, R, Matthews, BC, Pilbratt, GL, Walker, HJ & Waelkens, C 2014, 'Extreme Conditions in a Close Analog to the Young Solar System: Herschel Observations of epsilon Eridani', The Astrophysical Journal. Letters, vol. 791, no. 1, L11. https://doi.org/10.1088/2041-8205/791/1/L11

TY - JOUR

T1 - Extreme Conditions in a Close Analog to the Young Solar System: Herschel Observations of epsilon Eridani

AU - Greaves, J. S.

AU - Sibthorpe, B.

AU - Acke, B.

AU - Pantin, E. E.

AU - Vandenbussche, B.

AU - Olofsson, G.

AU - Dominik, C.

AU - Barlow, M. J.

AU - Bendo, G. J.

AU - Blommaert, J. A. D. L.

AU - Brandeker, A.

AU - de Vries, B. L.

AU - Dent, W. R. F.

AU - Di Francesco, J.

AU - Fridlund, M.

AU - Gear, W. K.

AU - Harvey, P. M.

AU - Hogerheijde, M. R.

AU - Holland, W. S.

AU - Ivison, R. J.

AU - Liseau, R.

AU - Matthews, B. C.

AU - Pilbratt, G. L.

AU - Walker, H. J.

AU - Waelkens, C.

PY - 2014/8

Y1 - 2014/8

N2 - Far-infrared Herschel images of the epsilon Eridani system, seen at a fifth of the Sun's present age, resolve two belts of debris emission. Fits to the 160 μm PACS image yield radial spans for these belts of 12-16 and 54-68 AU. The south end of the outer belt is ≈10% brighter than the north end in the PACS+SPIRE images at 160, 250, and 350 μm, indicating a pericenter glow attributable to a planet "c." From this asymmetry and an upper bound on the offset of the belt center, this second planet should be mildly eccentric (ec ≈ 0.03-0.3). Compared to the asteroid and Kuiper Belts of the young Sun, the epsilon Eri belts are intermediate in brightness and more similar to each other, with up to 20 km sized collisional fragments in the inner belt totaling ≈5% of an Earth mass. This reservoir may feed the hot dust close to the star and could send many impactors through the Habitable Zone, especially if it is being perturbed by the suspected planet epsilon Eri b, at semi-major axis ≈3 AU.

AB - Far-infrared Herschel images of the epsilon Eridani system, seen at a fifth of the Sun's present age, resolve two belts of debris emission. Fits to the 160 μm PACS image yield radial spans for these belts of 12-16 and 54-68 AU. The south end of the outer belt is ≈10% brighter than the north end in the PACS+SPIRE images at 160, 250, and 350 μm, indicating a pericenter glow attributable to a planet "c." From this asymmetry and an upper bound on the offset of the belt center, this second planet should be mildly eccentric (ec ≈ 0.03-0.3). Compared to the asteroid and Kuiper Belts of the young Sun, the epsilon Eri belts are intermediate in brightness and more similar to each other, with up to 20 km sized collisional fragments in the inner belt totaling ≈5% of an Earth mass. This reservoir may feed the hot dust close to the star and could send many impactors through the Habitable Zone, especially if it is being perturbed by the suspected planet epsilon Eri b, at semi-major axis ≈3 AU.

KW - circumstellar matter

KW - planet-disk interactions

KW - stars: individual: epsilon Eridani

U2 - 10.1088/2041-8205/791/1/L11

DO - 10.1088/2041-8205/791/1/L11

M3 - Article

SN - 2041-8205

VL - 791

JO - The Astrophysical Journal. Letters

JF - The Astrophysical Journal. Letters

IS - 1

M1 - L11

ER -

Extreme Conditions in a Close Analog to the Young Solar System: Herschel Observations of epsilon Eridani

Abstract

Keywords

UN SDGs

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