eprintid: 10093767 rev_number: 14 eprint_status: archive userid: 608 dir: disk0/10/09/37/67 datestamp: 2020-04-27 13:49:12 lastmod: 2021-09-20 00:16:23 status_changed: 2020-04-27 13:49:12 type: article metadata_visibility: show creators_name: Greaves, JS creators_name: Sibthorpe, B creators_name: Acke, B creators_name: Pantin, EE creators_name: Vandenbussche, B creators_name: Olofsson, G creators_name: Dominik, C creators_name: Barlow, MJ creators_name: Bendo, GJ creators_name: Blommaert, JADL creators_name: Brandeker, A creators_name: De Vries, BL creators_name: Dent, WRF creators_name: Di Francesco, J creators_name: Fridlund, M creators_name: Gear, WK creators_name: Harvey, PM creators_name: Hogerheijde, MR creators_name: Holland, WS creators_name: Ivison, RJ creators_name: Liseau, R creators_name: Matthews, BC creators_name: Pilbratt, GL creators_name: Walker, HJ creators_name: Waelkens, C title: Extreme conditions in a close analog to the young Solar System: Herschel observations of ϵ Eridani ispublished: pub divisions: UCL divisions: B04 divisions: C06 divisions: F60 keywords: circumstellar matter; planet-disk interactions; stars: individual (epsilon Eridani) note: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. 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. date: 2014-08-10 date_type: published publisher: IOP PUBLISHING LTD official_url: https://doi.org/10.1088/2041-8205/791/1/L11 oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1125609 doi: 10.1088/2041-8205/791/1/L11 lyricists_name: Barlow, Michael lyricists_id: MJBAR75 actors_name: Barlow, Michael actors_id: MJBAR75 actors_role: owner full_text_status: public publication: The Astrophysical Journal Letters volume: 791 number: 1 article_number: L11 pages: 5 citation: Greaves, JS; Sibthorpe, B; Acke, B; Pantin, EE; Vandenbussche, B; Olofsson, G; Dominik, C; ... Waelkens, C; + view all <#> 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; - view fewer <#> (2014) Extreme conditions in a close analog to the young Solar System: Herschel observations of ϵ Eridani. The Astrophysical Journal Letters , 791 (1) , Article L11. 10.1088/2041-8205/791/1/L11 <https://doi.org/10.1088/2041-8205%2F791%2F1%2FL11>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10093767/1/Greaves_2014_ApJL_791_L11.pdf