J/A+A/588/A81 Line list and abundances of the binary zet2 Ret (Saffe+, 2016)
A temperature condensation trend in the debris-disk binary system
ζ2 Reticuli.
Saffe C., Flores M., Jaque Arancibia M., Buccino A., Jofre E.
<Astron. Astrophys. 588, A81 (2016)>
=2016A&A...588A..81S 2016A&A...588A..81S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Abundances
Keywords: stars: abundances - Stars: planetary systems - stars: binaries -
stars: individual: zet1 Ret - stars: individual: zet2 Ret
Abstract:
We explore condensation temperature Tc trends in the binary system
zet1 Ret - zet2 Ret, to determine whether there is a depletion of
refractories, which could be related to the planet formation process.
The star zet2 Ret hosts a debris disk which was detected by an IR
excess and confirmed by direct imaging and numerical simulations,
while zet1 Ret does not present IR excess nor planets. We derived
differential abundances of 24 different species with equivalent widths
and spectral synthesis. The star zet1 Ret resulted slightly more metal
rich than zet2 Ret by 0.02dex, and the relative abundances showed a
positive Tc trend. Then, we propose an scenario in which the
refractory elements depleted in zet2 Ret are possibly locked-up in the
rocky material that orbits this star and produce the debris disk
observed around this object.
Description:
Detailed line-by-line data and average abundances of the stars
zet1 Ret and zet2 Ret both relative to the Sun, and zet1 Ret relative
to zet2 Ret.
Objects:
-------------------------------------------------
RA (2000) DE Designation(s)
-------------------------------------------------
03 17 46.16 -62 34 31.2 HD 20766 = * zet01 Ret
03 18 12.82 -62 30 22.9 HD 20807 = * zet02 Ret
-------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 67 627 Line list and equivalent widths of zet1 Ret,
zet2 Ret and Sun
table3.dat 95 31 Differential abundances and errors for the stars
zet1 Ret and zet2 Ret
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.2 --- Elem Element
9- 20 F12.3 0.1nm Wave Wavelength (Angstroms)
21- 30 F10.3 eV EP Excitation potential
31- 40 F10.3 [-] loggf Oscillator strength (dex)
41- 49 F9.1 0.1pm W1 ? Equivalent width in zet1 Ret (1)
50- 58 F9.1 0.1pm W2 ? Equivalent width in zet2 Ret (1)
59- 67 F9.1 0.1pm Wsun ? Equivalent width in the Sun (1)
--------------------------------------------------------------------------------
Note (1): The abundances of those lines without equivalent widths were measured
using synthetic spectra.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- Elem Element
12- 18 F7.3 --- [X/Fe]1 Abundance (zet1 Ret-Sun)
19- 25 F7.3 --- sobs1 Observational error (zet1 Ret-Sun)
26- 32 F7.3 --- spar1 Error due to stellar parameters (zet1 Ret-Sun)
33- 39 F7.3 --- stot1 Total error (zet1 Ret-Sun)
40- 46 F7.3 --- [X/Fe]2 Abundance (zet2 Ret-Sun)
47- 53 F7.3 --- sobs2 Observational error (zet2 Ret-Sun)
54- 60 F7.3 --- spar2 Error due to stellar parameters (zet2 Ret-Sun)
61- 67 F7.3 --- stot2 Total error (zet2 Ret-Sun)
68- 74 F7.3 --- [X/Fe]3 Abundance (zet1-zet2)
75- 81 F7.3 --- sobs3 Observational error (zet1-zet2)
82- 88 F7.3 --- spar3 Error due to stellar parameters (zet1-zet2)
89- 95 F7.3 --- stot3 Total error (zet1-zet2)
--------------------------------------------------------------------------------
Acknowledgements:
Carlos Saffe, csaffe(at)icate-conicet.gob.ar
(End) Carlos Saffe [ICATE], Patricia Vannier [CDS] 05-Feb-2016