J/A+A/691/A298 Thin disk chemical evolution (Plotnikova+, 2024)
The chemical evolution of the Milky Way thin disk using solar twins.
Plotnikova A., Spina L., Ratcliffe B., Casali G., Carraro G.
<Astron. Astrophys. 691, A298 (2024)>
=2024A&A...691A.298P 2024A&A...691A.298P (SIMBAD/NED BibCode)
ADC_Keywords: Milky Way ; Stars, dwarfs ; Stars, G-type ; Abundances ;
Stars, ages ; Stars, diameters ; Radial velocities
Keywords: stars: abundances - stars: kinematics and dynamics -
stars: solar-type - Galaxy: disk - solar neighborhood -
Galaxy: structure
Abstract:
In this study we address whether the age-metallicity relation (AMR)
deviates from the expected trend of metallicity increasing smoothly
with age. We also show the presence (or absence) of two populations,
as recently claimed using a relatively small dataset. Moreover, we
studied the Milky Way thin disk's chemical evolution using solar
twins, including the effect of radial migration and accretion events.
In particular, we exploited high-resolution spectroscopy of a large
sample of solar twins in tandem with an accurate age determination to
investigate the Milky Way thin disk age-metallicity relationship.
Additionally, we derived the stars' birth radius and studied the
chemical evolution of the thin disk.
We discovered that statistical and selection biases can lead to a
misinterpretation of the observational data. An accurate accounting of
all the uncertainties led us to detect no separation in the AMR into
different populations for solar twins around the Sun
(-0.3<[Fe/H]<0.3dex). This lead us to the conclusion that the thin
disk was formed relatively smoothly. For the main scenario of the
Milky Way thin disk formation, we suggest that the main mechanism for
reaching today's chemical composition around the Sun is radial
migration with the possible contribution of well-known accretion
events such as Gaia-Enceladus/Sausage (GES) and Sagittarius (Sgr).
Description:
In this catalogue, we present two datasets of spectroscopic
parameters, abundances, ages and kinematics of solar twins (i.e.,
effective temperature Teff: Teffsun±200K; surface gravity logg:
loggsun±0.20dex; metallicity [Fe/H]: [Fe/H]sun±0.3dex; where
Teffsun=5771K, loggsun=4.44dex and [Fe/H]sun=0.0dex; Ayres et
al., 2006ApJS..165..618A 2006ApJS..165..618A) with high-resolution high signal-to-noise
spectroscopic observation. The first dataset consists of stellar
parameters and chemical abundances derived from HARPS-North (HARPS-N)
spectra for 130 stars, which were fully reduced and analyzed, as
described in the paper. This dataset was greatly expanded by the
chemical abundances derived by Casali et al. (2020A&A...639A.127C 2020A&A...639A.127C,
Cat. J/A+A/639/A127) for 485 solar-twin stars observed with the
HARPS-South (HARPS-S) spectrograph. The ages, kinematical properties
and birth radii were consistently derived in the paper for all stars
in the two datasets (Sects. 2.5 and 2.6) and also presented in this
catalogue.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
harpss.dat 569 485 Age, kinematical parameters and birth radii
for the dataset from Casali et al.,
2020A&A...639A.127C 2020A&A...639A.127C, Cat. J/A+A/639/A127
harpsn.dat 983 130 Stellar parameters,s, age, kinematical parameters
and birth radii for this paper dataset
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See also:
J/A+A/639/A127 : Age-chemical-clocks-metallicity relations (Casali+, 2020)
Byte-by-byte Description of file: harpss.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 17 A17 --- HARPSS ID presented in HARPSS database
19- 31 F13.9 deg RAdeg Right Ascension from HARPSS (J2000)
33- 45 F13.9 deg DEdeg Declination from HARPSS (J2000)
47- 54 A8 --- --- [Gaia DR3]
56- 74 I19 --- GaiaDR3 ID from Gaia DR3
76- 88 F13.9 deg RA3deg Right Ascension Gaia DR3 (ICRS) at Ep=2016.0
90-102 F13.9 deg DE3deg Declination Gaia DR3 (ICRS) at Ep=2016.0
104-111 F8.4 mas Plx ?=- Parallax
113-118 F6.4 mas e_Plx ?=- Parallax error
120-128 F9.3 mas/yr pmRA ?=- Proper motion RA
130-134 F5.3 mas/yr e_pmRA ?=- Proper motion RA error
136-143 F8.3 mas/yr pmDE ?=- Proper motion DEC
145-149 F5.3 mas/yr e_pmDE ?=- Proper motion DEC error
151-157 F7.2 km/s RVG ?=- Radial velocity Gaia DR3
159-162 F4.2 km/s e_RVG ?=- Radial velocity Gaia DR3 error
164-176 F13.9 deg RA2deg Right Ascension J2000
178-190 F13.9 deg DE2deg Declination J2000
192-200 F9.6 arcsec angDist Angular distance for the Gaia DR3 solution
202-224 A23 --- Simbad Simbad ID
226-244 F19.13 kpc.km/s Lz ?=- Angular momentum along z-axis
246-264 F19.11 km2/s2 En ?=- Total energy
266-283 F18.16 --- e ?=- Eccentricity
285-302 F18.16 kpc rmin ?=- Pericenter
304-322 F19.16 kpc rmax ?=- Apocenter
324-341 F18.16 kpc r ?=- Spherical radius
343-360 F18.16 kpc R0 ?=- Cylindrical radius
362-380 F19.16 kpc Rguide ?=- Guiding radius
382-399 F18.16 kpc Zmax ?=- Maximum hight above/below Galactic plane
401-421 F21.16 km/s vr ?=- Spherical radial velocity
423-443 F21.16 km/s vR0 ?=- Radial velocity in the Galactic potential
445-465 F21.16 km/s vz ?=- Vertical velocity
467-485 F19.15 km/s vphi ?=- Angular velocity
487-506 F20.16 kpc Rbirth Birth radius
508-525 F18.16 kpc e_Rbirth Birth radius error
527-529 F3.1 --- f_Rbirth [0/1] Birth radius flag
(1: ok, 0: birth radius is not reliable)
531-549 F19.16 Gyr Age Age
551-569 F19.16 Gyr e_Age Age error
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Byte-by-byte Description of file: harpsn.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 A13 --- HARPSN ID presented in HARPSN database
15- 18 I4 K Teff Effective temperature
20- 24 F5.3 [cm/s2] logg Surface gravity
26- 29 F4.2 km/s vt Turbulance velocity
31- 36 F6.3 --- [Fe/H] Metallicity
38- 39 I2 K e_Teff Effective temperature error
41- 45 F5.3 [cm/s2] e_logg Surface gravity error
47- 51 F5.3 --- e_[Fe/H] Metallicity error
53- 56 F4.2 km/s e_vt Turbulance velocity error
58- 69 F12.9 Gyr Age Age
71- 81 F11.9 Gyr e_Age Age error
83- 94 F12.8 deg RAdeg Right Ascension from HARPSN (J2000)
96-108 F13.9 deg DEdeg Declination from HARPSN (J2000)
110-117 A8 --- --- [Gaia DR3]
119-137 I19 --- GaiaDR3 ID from Gaia DR3
139-151 F13.9 deg RA3deg Right Ascension Gaia DR3 (ICRS) at Ep=2016.0
153-165 F13.9 deg DE3deg Declination Gaia DR3 (ICRS) at Ep=2016.0
167-174 F8.4 mas Plx ?=- Parallax
176-181 F6.4 mas e_Plx ?=- Parallax error
183-190 F8.3 mas/yr pmRA ?=- Proper motion RA
192-196 F5.3 mas/yr e_pmRA ?=- Proper motion RA error
198-205 F8.3 mas/yr pmDE ?=- Proper motion DEC
207-211 F5.3 mas/yr e_pmDE ?=- Proper motion DEC error
213-219 F7.2 km/s RVG ?=- Radial velocity Gaia DR3
221-224 F4.2 km/s e_RVG ?=- Radial velocity Gaia DR3 error
226-238 F13.9 deg RA2deg Right Ascension (J2000)
240-252 F13.9 deg DE2deg Declination (J2000)
254-262 F9.6 arcsec angDist Angular distance for the Gaia DR3 solution
264-273 F10.3 km/s RVspec ?=- Radial velocity derived spectroscopically
275-285 E11.7 km/s e_RVspec ? Radial velocity derived spectroscopically
error
287-294 F8.3 km/s RV Radial velocity used to derive kinematics
296 A1 --- f_RV [g/m] Radial velocity flag (1)
298-317 F20.14 kpc.km/s Lz ?=- Angular momentum along z-axis
319-337 F19.11 km2/s2 En ?=- Total energy
339-356 F18.16 --- e ?=- Eccentricity
358-375 F18.16 kpc rmin ?=- Pericenter
377-394 F18.15 kpc rmax ?=- Apocenter
396-412 F17.15 kpc r ?=- Spherical radius
414-430 F17.15 kpc R0 ?=- Cylindrical radius
432-449 F18.16 kpc Rguide ?=- Guiding radius
451-468 F18.16 kpc Zmax ?=- Maximum hight above/below Galactic plane
470-490 F21.16 km/s vr ?=- Spherical radial velocity
492-512 F21.16 km/s vR0 ?=- Radial velocity in the Galactic potential
514-533 F20.16 km/s vz ?=- Vertical velocity
535-553 F19.15 km/s vphi ?=- Angular velocity
555-574 F20.16 kpc Rbirth Birth radius
576-593 F18.16 kpc e_Rbirth Birth radius error
595-597 F3.1 --- f_Rbirth [0/1] Birth radius flag
(1: ok, 0: not reliable)
599-604 F6.3 --- [CI/H] Abundance [CI/H]
606-610 F5.3 --- e_[CI/H] Abundance [CI/H] error
612-617 F6.3 --- [NaI/H] Abundance [NaI/H]
619-623 F5.3 --- e_[NaI/H] Abundance [NaI/H] error
625-630 F6.3 --- [MgI/H] Abundance [MgI/H]
632-636 F5.3 --- e_[MgI/H] Abundance [MgI/H] error
638-643 F6.3 --- [AlI/H] Abundance [AlI/H]
645-649 F5.3 --- e_[AlI/H] Abundance [AlI/H] error
651-656 F6.3 --- [SiI/H] Abundance [SiI/H]
658-662 F5.3 --- e_[SiI/H] Abundance [SiI/H] error
664-669 F6.3 --- [SI/H] ?=- Abundance [SI/H]
671-675 F5.3 --- e_[SI/H] ?=- Abundance [SI/H] error
677-682 F6.3 --- [CaI/H] Abundance [CaI/H]
684-688 F5.3 --- e_[CaI/H] Abundance [CaI/H] error
690-695 F6.3 --- [ScI/H] Abundance [ScI/H]
697-701 F5.3 --- e_[ScI/H] Abundance [ScI/H] error
703-708 F6.3 --- [ScII/H] Abundance [ScII/H]
710-714 F5.3 --- e_[ScII/H] Abundance [ScII/H] error
716-721 F6.3 --- [TiI/H] Abundance [TiI/H]
723-727 F5.3 --- e_[TiI/H] Abundance [TiI/H] error
729-734 F6.3 --- [TiII/H] Abundance [TiII/H]
736-740 F5.3 --- e_[TiII/H] Abundance [TiII/H] error
742-747 F6.3 --- [VI/H] Abundance [VI/H]
749-753 F5.3 --- e_[VI/H] Abundance [VI/H] error
755-760 F6.3 --- [CrI/H] Abundance [CrI/H]
762-766 F5.3 --- e_[CrI/H] Abundance [CrI/H] error
768-773 F6.3 --- [CrII/H] Abundance [CrII/H]
775-779 F5.3 --- e_[CrII/H] Abundance [CrII/H] error
781-786 F6.3 --- [MnI/H] Abundance [MnI/H]
788-792 F5.3 --- e_[MnI/H] Abundance [MnI/H] error
794-799 F6.3 --- [FeI/H] Abundance [FeI/H]
801-805 F5.3 --- e_[FeI/H] Abundance [FeI/H] error
807-812 F6.3 --- [FeII/H] Abundance [FeII/H]
814-818 F5.3 --- e_[FeII/H] Abundance [FeII/H] error
820-825 F6.3 --- [CoI/H] Abundance [CoI/H]
827-831 F5.3 --- e_[CoI/H] Abundance [CoI/H] error
833-838 F6.3 --- [NiI/H] Abundance [NiI/H]
840-844 F5.3 --- e_[NiI/H] Abundance [NiI/H] error
846-851 F6.3 --- [CuI/H] Abundance [CuI/H]
853-857 F5.3 --- e_[CuI/H] Abundance [CuI/H] error
859-864 F6.3 --- [ZnI/H] Abundance [ZnI/H]
866-870 F5.3 --- e_[ZnI/H] Abundance [ZnI/H] error
872-877 F6.3 --- [SrI/H] Abundance [SrI/H]
879 I1 --- e_[SrI/H] Abundance [SrI/H] error
881-886 F6.3 --- [YII/H] Abundance [YII/H]
888-892 F5.3 --- e_[YII/H] Abundance [YII/H] error
894-899 F6.3 --- [ZrII/H] Abundance [ZrII/H]
901-905 F5.3 --- e_[ZrII/H] Abundance [ZrII/H] error
907-912 F6.3 --- [BaII/H] Abundance [BaII/H]
914-918 F5.3 --- e_[BaII/H] Abundance [BaII/H] error
920-925 F6.3 --- [LaII/H] Abundance [LaII/H]
927-931 F5.3 --- e_[LaII/H] Abundance [LaII/H] error
933-938 F6.3 --- [CeII/H] Abundance [CeII/H]
940-944 F5.3 --- e_[CeII/H] Abundance [CeII/H] error
946-951 F6.3 --- [NdII/H] Abundance [NdII/H]
953-957 F5.3 --- e_[NdII/H] Abundance [NdII/H] error
959-964 F6.3 --- [SmII/H] Abundance [SmII/H]
966-970 F5.3 --- e_[SmII/H] Abundance [SmII/H] error
972-977 F6.3 --- [EuII/H] Abundance [EuII/H]
979-983 F5.3 --- e_[EuII/H] Abundance [EuII/H] error
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Note (1): Flag as follows:
g = Radial velocity GaiaDR3
m = Radial velocity derived spectroscopically
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Acknowledgements:
Anastasiia Plotnikova, tyww(at)yandex.ru
(End) Patricia Vannier [CDS] 18-Nov-2024