2011A&A...527A..57R


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.17CEST20:31:44

2011A&A...527A..57R - Astronomy and Astrophysics, volume 527A, 57-57 (2011/3-1)

The cold origin of the warm dust around ε Eridani.

REIDEMEISTER M., KRIVOV A.V., STARK C.C., AUGEREAU J.-C., LOEHNE T. and MUELLER S.

Abstract (from CDS):

The nearby K2 V star ε Eridani hosts one known inner planet, an outer Kuiper belt analog, and an inner disk of warm dust. Spitzer/IRS measurements indicate that the warm dust is present at distances as close as a few AU from the star. Its origin is puzzling, since an [asteroid belt that could produce this dust would be unstable because of the known inner planet. Here we test a hypothesis that the observed warm dust is generated by collisions in the outer belt and is transported inward by Poynting-Robertson drag and strong stellar winds. We simulated a steady-state distribution of dust particles outside 10AU with a collisional code and in the inner region (r<10AU) with single-particle numerical integrations. By assuming homogeneous spherical dust grains composed of ice and astrosilicate, we calculated the thermal emission of the dust and compared it with observations. We investigated two different orbital configurations for the inner planet inferred from radial velocity measurements, one with a highly eccentric orbit of e=0.7 and another one with a moderate eccentricity of e=0.25. We also produced a simulation without a planet. Our models can reproduce the shape and magnitude of the observed spectral energy distribution from mid-infrared to submillimeter wavelengths, as well as the Spitzer/MIPS radial brightness profiles. The best-fit dust composition includes both water ice and silicates. The results are similar for the two possible planetary orbits and without a planet. The observed warm dust in the ε Eridani system can indeed stem from the outer [Kuiper belt and be transported inward by Poynting-Robertson and stellar wind drag. The inner planet has little effect on the distribution of dust, so that the planetary orbit could not be constrained. Reasonable agreement between the model and observations can only be achieved by relaxing the assumption of purely silicate dust and assuming a mixture of silicate and water ice in comparable amounts.

Abstract Copyright:

Journal keyword(s): planets and satellites: formation - circumstellar matter - stars: individual: ε Eridani - planet-disk interactions - zodiacal dust

Simbad objects: 1

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Number of rows : 1

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1740 1

    Equat.    Gal    SGal    Ecl

C.D.S. - SIMBAD4 rel 1.7 - 2021.04.17CEST20:31:44

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
* eps Eri -- Variable of BY Dra type
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
* (2013A&A,*,...), X (2015A&A,1AXG,...), PM* (Ci,LFT,...), IR (IRAS,IRC,...), UV (2EUVE,EUVE,...), ** (**,CCDM,...), BY* (2017ARep), Ro* (1996ApJ), V* (V*)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
03 32 55.8449634 -09 27 29.731165 (Optical) [ 0.14 0.11 90 ] A 2007A&A...474..653V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
03 30 34.3612726 -09 37 34.733653 [ 0.14 0.11 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
195.8446391744 -48.0512971075 [ 0.14 0.11 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr :
-975.17 19.49 [0.21 0.20 0] A 2007A&A...474..653V
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) 16.376 [0.0001] / z(spectroscopic) 0.000055 [0.000000] / cz 16.38 [0.00]
   (Opt) A 2018A&A...616A...7S
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas):
310.94 [0.16] A 2007A&A...474..653V
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
K2V B 1989ApJS...71..245K
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (9) :
U 5.19 [~] C 2002yCat.2237....0D
B 4.61 [~] C 2002yCat.2237....0D
V 3.73 [~] C 2002yCat.2237....0D
R 3.00 [~] C 2002yCat.2237....0D
G 3.3691 [0.0040] C 2018yCat.1345....0G
I 2.54 [~] C 2002yCat.2237....0D
J 2.23 [~] C 2002yCat.2237....0D
H 1.75 [~] C 2002yCat.2237....0D
K 1.67 [~] C 2002yCat.2237....0D
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Some important notes on this object about identifications and objects associations.
notes:


Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

The count displayed here is the number of children objects.
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%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

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Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (69) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* eps Eri GJ 144.0 PLX 742 TD1 2301
* 18 Eri GJ 144 PLX 742.00 TIC 118572803
** BLA 2 HD 22049 PMC 90-93 91 TYC 5296-1533-1
** MBA 1A HIC 16537 PM 03306-0938 UBV 3410
1AXG J033256-0926 HIP 16537 PPM 185905 UBV M 9580
BD-09 697 HR 1084 RAFGL 497 uvby98 100022049
CCDM J03329-0927A IRAS 03305-0937 RBS 439 V* eps Eri
Ci 20 241 IRC -10048 2RE J033253-092646 WDS J03329-0927A
1E 0330.5-0937 JP11 792 2RE J0332-092 WDS J03329-0927Aa,Ab
2E 788 LFT 291 RE J0332-092 WEB 3160
2E 0330.5-0937 LHS 1557 RE J033255-092717 YZ 0 4513
2EUVE J0332-09.4 LPM 158 ROT 531 YZ 99 836
EUVE J0332-09.4 LTT 1675 RX J0332.9-0927 Zkh 51
FK5 127 2MASS J03325591-0927298 1RXS J033256.4-092727 [FS2003] 0134
GC 4244 N30 726 SACS 76 Gaia DR2 5164707970261630080
GCRV 1962 NAME Ran SAO 130564
GEN# +1.00022049 NLTT 11207 SKY# 5366
GES J03325495-0927294 8pc 310.75 SPOCS 171

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References (1740 between 1850 and 2021) (Total 1740)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements


velocities : 25    distance : 1    Fe_H : 83    V* : 2    diameter : 1    ROT : 13    PLX : 4    PM : 7    MK : 38   

   

Observing logs


ISO : 11    herschel : 7    IUE : 172    XMM : 1   

   


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : * eps Eri

Link by name to the catalogue in VizieR :

BD-09 697 CCDM J03329-0927A 2E 788 EUVE J0332-09.4 FK5 127
GJ 144.0 GJ 144 HD 22049 HIC 16537 HIP 16537
HR 1084 IRAS 03305-0937 IRC -10048 LHS 1557 2MASS J03325591-0927298
NLTT 11207 PLX 742 PPM 185905 RAFGL 497 2RE J033253-092646
2RE J0332-092 1RXS J033256.4-092727 SAO 130564 TD1 2301 TYC 5296-1533-1
uvby98 100022049 V* eps Eri WDS J03329-0927A WDS J03329-0927Aa,Ab Gaia DR2 5164707970261630080

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2021.04.17-20:31:44

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