J/A+A/604/L4 HAT-P-4 and TYC 2569-744-1 abundances and spectra (Saffe+, 2017)
Signatures of rocky planet engulfment in HAT-P-4.
Saffe C., Jofre E., Martioli E., Flores M., Petrucci, R., Jaque Arancibia M.
<Astron. Astrophys. 604, L4 (2017)>
=2017A&A...604L...4S 2017A&A...604L...4S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Abundances
Keywords: stars: abundances - planetary systems - binaries: general -
stars: individual: TYC 2569-744-1 - stars: individual: HAT-P-4
Abstract:
We explore condensation temperature Tc trends and the Li content in
the binary system HAT-P-4, to study the possible chemical signature of
planet formation. The star HAT-P-4 hosts a hot Jupiter planet detected
by transits, while its stellar companion does not have any detected
planets. We derived the fundamental parameters and abundances using
the differential method. HAT-P-4 is found to be about 0.1dex more
metal rich than its companion; it is enhanced in refractory elements
and presents a higher Lithium content. We propose a scenario of a
possible rocky planet engulfment in HAT-P-4, which explains the higher
metallicity, the higher Li content, and the negative Tc trend we
detected.
Description:
Detailed line-by-line data and average abundances of the A star
(HAT-P-4) and its B companion, both relative to the Sun and for B
relative to A. Also the reduced spectra as FITS files of stars A and
B; the filenames are HAT-P-4.fits and TYC2569-744-1.fits
Objects:
------------------------------------------------------------------------
RA (2000) DE Designation(s)
------------------------------------------------------------------------
15 19 57.93 +36 13 46.8 HAT-P-4 = BD+36 2593
15 20 00.01 +36 12 18.5 TYC 2569-744-1 = 2MASS J15200001+3612185
------------------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 67 531 Line list and equivalent widths of stars A, B
and Sun
table2.dat 95 24 Differential abundances and errors for the
stars A (HAT-P-4) and B (TYC 2569-744-1)
list.dat 118 2 List of fits spectra
fits/* . 2 Individual spectra
--------------------------------------------------------------------------------
See also:
J/AJ/141/63 : Relative radial velocities of HAT-P-4 and HAT-P-14 (Winn+, 2011)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 F8.2 --- El Element
9- 20 F12.3 0.1nm Wave Wavelength (Å)
21- 30 F10.3 eV EP Excitation potential
31- 40 F10.3 [-] loggf Oscillation strength log(gf) (dex)
41- 49 F9.1 0.1pm WA ? Equivalent width in HAT-P-4 (star A) (1)
50- 58 F9.1 0.1pm WB ? Equivalent width in TYC 2569-744-1
(star B) (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: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 A11 --- El Element
12- 18 F7.3 --- [X/Fe]1 Abundance (A-Sun)
19- 25 F7.3 --- sobs1 Observational error (A-Sun)
26- 32 F7.3 --- spar1 Error due to stellar parameters (A-Sun)
33- 39 F7.3 --- stot1 Total error (A-Sun)
40- 46 F7.3 --- [X/Fe]2 Abundance (B-Sun)
47- 53 F7.3 --- sobs2 Observational error (B-Sun)
54- 60 F7.3 --- spar2 Error due to stellar parameters (B-Sun)
61- 67 F7.3 --- stot2 Total error (B-Sun)
68- 74 F7.3 --- [X/Fe]3 Abundance (B-A)
75- 81 F7.3 --- sobs3 Observational error (B-A)
82- 88 F7.3 --- spar3 Error due to stellar parameters (B-A)
89- 95 F7.3 --- stot3 Total error (B-A)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: list.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 14 A14 --- Name Star name
16- 17 I2 h RAh Right ascension (J2000)
19- 20 I2 min RAm Right ascension (J2000)
22- 26 F5.2 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 38 F4.1 arcsec DEs Declination (J2000)
40- 45 I6 --- Nx Number of pixels along X-axis
47- 53 F7.2 0.1nm blambda Lower value of wavelength interval
55- 61 F7.1 0.1nm Blambda Upper value of wavelength interval
63- 71 F9.7 0.1nm dlambda Sepctral resolution
73- 75 I3 Kibyte size Size of FITS file
77- 94 A18 --- FileName Name of FITS file, in subdirectory fits
96-118 A23 --- Title Title of the file
--------------------------------------------------------------------------------
Acknowledgements:
Carlos Saffe, csaffe(at)conicet.gov.ar
(End) Carlos Saffe [Argentina], Patricia Vannier [CDS] 17-Jul-2017