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