J/A+A/669/A119 Radial abundance gradient with open clusters (Magrini+, 2023)
The Gaia-ESO survey: Mapping the shape and evolution of the radial abundance
gradient with open clusters.
Magrini L., Viscasillas Vazquez C., Spina L., Randich S., Romano D.,
Franciosini E., Recio-Blanco A., Nordlander T., D'Orazi V., Baratella M.,
Smiljanic R., Dantas M.L.L., Pasquini L., Spitoni E., Casali G.,
Van der Swaelmen M., Bensby T., Stonkute E., Feltzing S., Sacco G.G.,
Bragaglia A., Pancino E., Heiter U., Biazzo K., Gilmore G., Bergemann M.,
Tautvaisiene G., Worley C., Hourihane A., Gonneau A., Morbidelli L.
<Astron. Astrophys. 669, A119 (2023)>
=2023A&A...669A.119M 2023A&A...669A.119M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Abundances ; Optical
Keywords: stars: abundances - stars: evolution -
Galaxy: open clusters and associations: general - Galaxy: evolution
Abstract:
The spatial distribution of elemental abundances and their time
evolution are among the major constraints to disentangling the
scenarios of formation and evolution of the Galaxy.
In this paper we used the sample of open clusters available in the
final release of the Gaia-ESO survey to trace the Galactic radial
abundance and abundance-to-iron ratio gradients, and their time
evolution.
We selected member stars in 62 open clusters, with ages from 0.1 to
about 7Gyr, located in the Galactic thin disc at galactocentric radii
(RGC) from about 6 to 21kpc. We analysed the shape of the resulting
[Fe/H] gradient, the average gradients [El/H] and [El/Fe] combining
elements belonging to four different nucleosynthesis channels, and
their individual abundance and abundance ratio gradients. We also
investigated the time evolution of the gradients dividing open
clusters in three age bins.
The [Fe/H] gradient has a slope of -0.054dex/kpc. It can be
better approximated with a two-slope shape, steeper for
RGC≤11.2kpc and flatter in the outer regions. We saw
different behaviours for elements belonging to different channels. For
the time evolution of the gradient, we found that the youngest
clusters (age<1Gyr) in the inner disc have lower metallicity than
their older counterparts and that they outline a flatter gradient. We
considered some possible explanations, including the effects of gas
inflow and migration. We suggest that the most likely one may be
related to a bias introduced by the standard spectroscopic analysis
producing lower metallicities in the analysis of low-gravity stars.
To delineate the shape of the 'true' gradient, we should most likely
limit our analysis to stars with low surface gravity logg>-2.5 and
microturbulent parameter ξ<1.8km/s. Based on this reduced sample,
we can conclude that the gradient has minimally evolved over the
time-frame outlined by the open clusters, indicating a slow and
stationary formation of the thin disc over the last 3Gyr. We found a
secondary role of cluster migration in shaping the gradient, with a
more prominent role of migration for the oldest clusters.
Description:
Tables in the Appendix of the paper containig the
abundance normalization scales, the average abundance and abundance
ratios of the sample open clusters, and the coefficients of the linear
weighted fits (per radial bins and per age bins, both for [El/H] and
[El/Fe]). Abundances by number, [El/H] and [El/Fe], are usually
expressed as [El/H]=log(n(El)/n(H))-log(n(El)/n(H))_sun and
[El/Fe]=log(n(El)/n(Fe))-log(n(El)/n(Fe))_sun, respectively.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tablea1.dat 56 24 SlopesIDR6 solar and M67 abundances
tablea2.dat 87 62 Average [alphaH] and [alpha/Fe] for our sample
of open clusters
tablea3.dat 75 62 Average [odd/H] and [odd/Fe] for our sample of
open clusters
tablea4.dat 99 62 Average [iron peak/H] and [iron peak/Fe] for
our sample of open clusters.
tablea5.dat 87 62 Average [s/H] and [s/Fe] for our sample of
open clusters
tablea6.dat 75 62 Average [r/H] and [r/Fe] for our sample of
open clusters
tablea7.dat 82 62 Number of member stars in each cluster and for
each element used in this work
tablea8.dat 107 25 Linear weighed regression fitting coefficients
of [El/H]=m1.RGC+c for the open clusters in
the two investigated galactocentric regions
and in the whole distance range
tablea9.dat 110 24 Linear weighed regression fitting coefficients
of [El/Fe]=m1.RGC+c for the open clusters in
the two investigated galactocentric regions and
in the whole distance range
tablea10.dat 104 25 Linear weighed regression fitting coefficients
of [El/H]=m1.RGC+c for the open clusters in
the three investigated age bins
tablea11.dat 108 24 Linear weighed regression fitting coefficients
of [El/Fe]=m1.RGC+c for the open clusters
in the three investigated age bins.
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Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- El Element name
6- 9 F4.2 [-] SunDR6 [0.52/8.66] Solar abundances
in Gaia-ESO iDR6 (12+log(El/H))
11- 14 F4.2 [-] e_SunDR6 [0.02/0.13] Error on Solar abundances
in Gaia-ESO iDR6
16- 19 F4.2 [-] SunG07 [0.52/8.66] Solar abundances in Grevesse
et al. (2007, SSR, 130, 105)
(12+log(El/H))
21- 24 F4.2 [-] e_SunG07 [0.02/0.1] Error on Solar abundances in
Grevesse et al. (2007, SSR, 130, 105)
26- 29 F4.2 [-] M67DR6 [0.54/8.74] Average abundances of the
member stars of M67 (12+log(El/H))
31- 34 F4.2 [-] e_M67DR6 [0.03/0.13] Standard deviation of the
average abundances of the member stars
of M67
36- 39 F4.2 [-] M67DR6giants [0.54/8.73] Average abundances of the
giant member stars of M67 (12+log(El/H))
41- 44 F4.2 [-] e_M67DR6giants [0.02/0.09] Standard deviation of the
average abundances of the giant member
stars of M67
46- 50 F5.2 [-] M67DR6dwarfs [0.53/8.81]? Average abundances of the
dwarf member stars of M67 (12+log(El/H))
52- 56 F5.2 [-] e_M67DR6dwarfs [0.01/0.12]? Standard deviation of the
average abundances of the dwarf member
stars of M67
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- GESFLD Open cluster ID as in GESFLD in Gaia-ESO iDR6
12- 16 F5.2 [-] [Fe/H] [-0.45/0.34] Mean cluster metallicity as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
18- 21 F4.2 Gyr Age [0.1/6.76] Cluster age as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
23- 27 F5.2 kpc Rgc [5.85/20.58] Cluster Rgc as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
29- 33 F5.2 [-] [OI/H] [-0.31/0.15]? Mean cluster [OI/H]
35- 39 F5.2 [-] [MgI/H] [-0.37/0.35] Mean cluster [MgI/H]
41- 45 F5.2 [-] [SiI/H] [-0.39/0.34] Mean cluster [SiI/H]
47- 51 F5.2 [-] [CaI/H] [-0.31/0.22]? Mean cluster [CaI/H]
53- 57 F5.2 [-] [TiI/H] [-0.33/0.36] Mean cluster [TiI/H]
59- 63 F5.2 [-] [OI/Fe] [-0.2/0.26]? Mean cluster [OI/Fe]
65- 69 F5.2 [-] [MgI/Fe] [-0.13/0.34] Mean cluster [MgI/Fe]
71- 75 F5.2 [-] [SiI/Fe] [-0.08/0.36] Mean cluster [SiI/Fe]
77- 81 F5.2 [-] [CaI/Fe] [-0.15/0.24]? Mean cluster [CaI/Fe]
83- 87 F5.2 [-] [TiI/Fe] [-0.18/0.29] Mean cluster [TiI/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- GESFLD Open cluster ID as in GESFLD in Gaia-ESO iDR6
12- 16 F5.2 --- [Fe/H] [-0.45/0.34] Mean cluster metallicity as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
18- 21 F4.2 Gyr Age [0.1/6.76] Cluster age as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
23- 27 F5.2 kpc Rgc [5.85/20.58] Cluster Rgc as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
29- 33 F5.2 --- [NaI/H] [-0.35/0.44]? Mean cluster [NaI/H]
35- 39 F5.2 --- [AlI/H] [-0.37/0.68] Mean cluster [AlI/H]
41- 45 F5.2 --- [CuI/H] [-0.74/0.36]? Mean cluster [CuI/H]
47- 51 F5.2 --- [ZnI/H] [-0.39/0.26]? Mean cluster [ZnI/H]
53- 57 F5.2 --- [NaI/Fe] [-0.1/0.47]? Mean cluster [NaI/Fe]
59- 63 F5.2 --- [AlI/Fe] [-0.16/0.49] Mean cluster [AlI/Fe]
65- 69 F5.2 --- [CuI/Fe] [-0.42/0.3]? Mean cluster [CuI/Fe]
71- 75 F5.2 --- [ZnI/Fe] [-0.33/0.18]? Mean cluster [ZnI/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- GESFLD Open cluster ID as in GESFLD in Gaia-ESO iDR6
12- 16 F5.2 [-] [Fe/H] [-0.45/0.34] Mean cluster metallicity as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
18- 21 F4.2 Gyr Age [0.1/6.76] Cluster age as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
23- 27 F5.2 kpc Rgc [5.85/20.58] Cluster Rgc as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
29- 33 F5.2 [-] [ScII/H] [-0.33/0.42] Mean cluster [ScII/H]
35- 39 F5.2 [-] [VI/H] [-0.43/0.64] Mean cluster [VI/H]
41- 45 F5.2 [-] [CrI/H] [-0.35/0.3]? Mean cluster [CrI/H]
47- 51 F5.2 [-] [MnI/H] [-0.47/0.38]? Mean cluster [MnI/H]
53- 57 F5.2 [-] [CoI/H] [-0.44/0.56] Mean cluster [CoI/H]
59- 63 F5.2 [-] [NiI/H] [-0.45/0.39]? Mean cluster [NiI/H]
65- 69 F5.2 [-] [ScII/Fe] [-0.1/0.21] Mean cluster [ScII/Fe]
71- 75 F5.2 [-] [VI/Fe] [-0.18/0.48] Mean cluster [VI/Fe]
77- 81 F5.2 [-] [CrI/Fe] [-0.15/0.21]? Mean cluster [CrI/Fe]
83- 87 F5.2 [-] [MnI/Fe] [-0.18/0.17]? Mean cluster [MnI/Fe]
89- 93 F5.2 [-] [CoI/Fe] [-0.17/0.39] Mean cluster [CoI/Fe]
95- 99 F5.2 [-] [NiI/Fe] [-0.15/0.09]? Mean cluster [NiI/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- GESFLD Open cluster ID as in GESFLD in Gaia-ESO iDR6
12- 16 F5.2 [-] [Fe/H] [-0.45/0.34] Mean cluster metallicity as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
18- 21 F4.2 Gyr Age [0.1/6.76] Cluster age as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
23- 27 F5.2 kpc Rgc [5.85/20.58] Cluster Rgc as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
29- 33 F5.2 [-] [YII/H] [-0.35/0.64] Mean cluster [YII/H]
35- 39 F5.2 [-] [ZrII/H] [-0.39/0.68]? Mean cluster [ZrII/H]
41- 45 F5.2 [-] [BaII/H] [-0.37/0.3]? Mean cluster [BaII/H]
47- 51 F5.2 [-] [LaII/H] [-0.4/0.29]? Mean cluster [LaII/H]
53- 57 F5.2 [-] [CeII/H] [-0.38/0.35]? Mean cluster [CeII/H]
59- 63 F5.2 [-] [YII/Fe] [-0.11/0.77] Mean cluster [YII/Fe]
65- 69 F5.2 [-] [ZrII/Fe] [-0.12/0.36]? Mean cluster [ZrII/Fe]
71- 75 F5.2 [-] [BaII/Fe] [-0.22/0.4]? Mean cluster [BaII/Fe]
77- 81 F5.2 [-] [LaII/Fe] [-0.29/0.31]? Mean cluster [LaII/Fe]
83- 87 F5.2 [-] [CeII/Fe] [-0.12/0.25]? Mean cluster [CeII/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea6.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- GESFLD Open cluster ID as in GESFLD in Gaia-ESO iDR6
12- 16 F5.2 [-] [Fe/H] [-0.45/0.34] Mean cluster metallicity as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
18- 21 F4.2 Gyr Age [0.1/6.76] Cluster age as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
23- 27 F5.2 kpc Rgc [5.85/20.58] Cluster Rgc as in
Randich et al. (2022A&A...666A.121R 2022A&A...666A.121R,)
29- 33 F5.2 [-] [MoI/H] [-0.32/0.68]? Mean cluster [MoI/H]
35- 39 F5.2 [-] [PrII/H] [-0.38/0.45]? Mean cluster [PrII/H]
41- 45 F5.2 [-] [NdII/H] [-0.15/0.45]? Mean cluster [NdII/H]
47- 51 F5.2 [-] [EuII/H] [-0.22/0.37]? Mean cluster [EuII/H]
53- 57 F5.2 [-] [MoI/Fe] [-0.23/0.61]? Mean cluster [MoI/Fe]
59- 63 F5.2 [-] [PrII/Fe] [-0.12/0.24]? Mean cluster [PrII/Fe]
65- 69 F5.2 [-] [NdII/Fe] [-0.17/0.41]? Mean cluster [NdII/Fe]
71- 75 F5.2 [-] [EuII/Fe] [-0.2/0.58]? Mean cluster [EuII/Fe]
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea7.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- GESFLD Open cluster ID as in GESFLD in Gaia-ESO iDR6
12- 13 I2 --- OI Number of members with OI
15- 16 I2 --- NaI Number of members with NaI
18- 19 I2 --- MgI [1/65] Number of members with MgI
21- 22 I2 --- AlI [1/63] Number of members with AlI
24- 25 I2 --- SiI [1/67] Number of members with SiI
27- 28 I2 --- CaI Number of members with CaI
30- 31 I2 --- ScII [1/66] Number of members with ScII
33- 34 I2 --- TiI [1/65] Number of members with TiI
36- 37 I2 --- VI [1/50] Number of members with VI
39- 40 I2 --- CrI Number of members with CrI
42- 43 I2 --- MnI Number of members with MnI
45- 46 I2 --- CoI [1/62] Number of members with CoI
48- 49 I2 --- NiI Number of members with NiI
51- 52 I2 --- CuI Number of members with CuI
54- 55 I2 --- ZnI Number of members with ZnI
57- 58 I2 --- YII [1/59] Number of members with YII
60- 61 I2 --- ZrI Number of members with ZrI
63- 64 I2 --- MoI Number of members with MoI
66- 67 I2 --- BaII Number of members with BaII
69- 70 I2 --- LaII Number of members with LaII
72- 73 I2 --- CeII Number of members with CeII
75- 76 I2 --- PrII Number of members with PrII
78- 79 I2 --- NdII Number of members with NdII
81- 82 I2 --- EuII Number of members with EuII
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea8.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- [El/H] Abundance ratio [El/H]
10- 15 F6.3 kpc-1 mINNER [-0.11/-0.01] Slope of the inner gradient
17- 21 F5.3 kpc-1 e_mINNER [0.0/0.02] Error on the slope of the
inner gradient
23- 27 F5.3 --- cINNER [0.22/0.89] Intercept of the inner gradient
29- 33 F5.3 --- e_cINNER [0.05/0.14] Error on Intercept of the
inner gradient
35- 40 F6.3 --- PCCINNER [-0.9/-0.22] Pearson correlation coefficient
of the inner gradient
42- 47 F6.3 kpc-1 mOUTER [-0.08/0.03]? Slope of the outer gradient
49- 54 F6.3 kpc-1 e_mOUTER [0.0/0.05]? Error on the slope of the
outer gradient
56- 61 F6.3 --- cOUTER [-0.31/0.97]? Intercept of the
outer gradient
63- 68 F6.3 --- e_cOUTER [0.06/0.58]? Error on Intercept of the
outer gradient
70- 75 F6.3 --- PCCOUTER [-0.96/0.31]? Pearson correlation
coefficient of the outer gradient
77- 82 F6.3 kpc-1 mALL [-0.07/-0.01] Slope of the overall gradient
84- 88 F5.3 kpc-1 e_mALL [0.0/0.01] Error on the slope of the
overall gradient
90- 94 F5.3 --- cALL [0.24/0.59] Intercept of the overall
gradient
96-100 F5.3 --- e_cALL [0.02/0.11] Error on Intercept of the
overall gradient
102-107 F6.3 --- PCCALL [-0.91/-0.38] Pearson correlation
coefficient of the overall gradient
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea9.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- [El/Fe] Abundance ratio [El/Fe]
11- 16 F6.3 kpc-1 mINNER [-0.02/0.07] Slope of the inner gradient
18- 22 F5.3 kpc-1 e_mINNER [0.0/0.02] Error on the slope of the inner
gradient
24- 29 F6.3 --- cINNER [-0.48/0.14] Intercept of the inner gradient
31- 35 F5.3 --- e_cINNER [0.03/0.1] Error on Intercept of the inner
gradient
37- 42 F6.3 --- PCCINNER [-0.4/0.87] Pearson correlation coefficient
of the inner gradient
44- 49 F6.3 kpc-1 mOUTER [-0.03/0.04]? Slope of the outer gradient
51- 56 F6.3 kpc-1 e_mOUTER [0.0/0.03]? Error on the slope of the outer
gradient
58- 63 F6.3 --- cOUTER [-0.33/0.34]? Intercept of the outer
gradient
65- 70 F6.3 --- e_cOUTER [0.05/0.28]? Error on Intercept of the outer
gradient
72- 77 F6.3 --- PCCOUTER [-0.69/0.78]? Pearson correlation
coefficient of the outer gradient
79- 84 F6.3 kpc-1 mALL [-0.01/0.05] Slope of the overall gradient
86- 90 F5.3 kpc-1 e_mALL [0.0/0.01] Error on the slope of the
overall gradient
92- 97 F6.3 --- cALL [-0.41/0.02] Intercept of the
overall gradient
99-103 F5.3 --- e_cALL [0.01/0.07] Error on Intercept of the
overall gradient
105-110 F6.3 --- PCCALL [-0.15/0.73] Pearson correlation coefficient
of the overall gradient
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea10.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- [El/H] Abundance ratio [El/H]
10- 15 F6.3 kpc-1 mYOUNG [-0.08/0.0] Slope of the gradient for
age<1Gyr
17- 21 F5.3 kpc-1 e_mYOUNG [0.0/0.02] Error on the slope of the
gradient for age<1Gyr
23- 27 F5.3 --- cYOUNG [0.08/0.64] Intercept of the gradient for
age<1Gyr
29- 33 F5.3 --- e_cYOUNG [0.03/0.11] Error on intercept of the
gradient for age<1Gyr
35- 40 F6.3 --- PCCYOUNG [-0.94/-0.1] Pearson correlation coefficient
of the gradient for age<1Gyr
42- 47 F6.3 kpc-1 mINTER [-0.07/0.0] Slope of the gradient for
1<age<3Gyr
49- 53 F5.3 kpc-1 e_mINTER [0.0/0.03] Error on the slope of the
gradient for 1< age<3Gyr
55- 59 F5.3 --- cINTER [0.16/0.65] Intercept of the gradient for
1<age<3Gyr
61- 65 F5.3 --- e_cINTER [0.03/0.19] Error on intercept of the
gradient for 1< age<3Gyr
67- 72 F6.3 --- PCCINTER [-0.93/-0.33] Pearson correlation
coefficient of the gradient for
1<age<3Gyr
74- 79 F6.3 kpc-1 mOLD [-0.13/0.0] Slope of the gradient for
age>3Gyr
81- 85 F5.3 kpc-1 e_mOLD [0.0/0.04] Error on the slope of the
gradient for age>3Gyr
87- 91 F5.3 --- cOLD [0.05/1.16] Intercept of the gradient for
age>3Gyr
93- 97 F5.3 --- e_cOLD [0.1/0.37] Error on intercept of the
gradient for age>3Gyr
99-104 F6.3 --- PCCOLD [-0.92/-0.16] Pearson correlation
coefficient of the gradient for age>3Gyr
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea11.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 A9 --- [El/Fe] Abundance ratio [El/Fe]
11- 16 F6.3 kpc-1 mYOUNG [-0.02/0.06] Slope of the gradient for
age<1Gyr
18- 22 F5.3 kpc-1 e_mYOUNG [0.0/0.03] Error on the slope of the
gradient for age<1Gyr
24- 29 F6.3 --- cYOUNG [-0.3/0.1] Intercept of the gradient for
age<1Gyr
31- 35 F5.3 --- e_cYOUNG [0.02/0.18] Error on intercept of the
gradient for age<1Gyr
37- 42 F6.3 --- PCCYOUNG [-0.47/0.71] Pearson correlation coefficient
of the gradient for age<1Gyr
44- 49 F6.3 kpc-1 mINTER [-0.01/0.06] Slope of the gradient for
1<age<3Gyr
51- 55 F5.3 kpc-1 e_mINTER [0.0/0.01] Error on the slope of the
gradient for 1<age<3Gyr
57- 62 F6.3 --- cINTER [-0.48/0.01] Intercept of the gradient for
1<age<3Gyr
64- 68 F5.3 --- e_cINTER [0.01/0.08] Error on intercept of the
gradient for 1<age<3Gyr
70- 75 F6.3 --- PCCINTER [-0.18/0.92] Pearson correlation coefficient
of the gradient for 1<age<3Gyr
77- 82 F6.3 kpc-1 mOLD [-0.02/0.1] Slope of the gradient for
age>3Gyr
84- 88 F5.3 kpc-1 e_mOLD [0.0/0.02] Error on the slope of the
gradient for age>3Gyr
90- 95 F6.3 --- cOLD [-0.87/0.13] Intercept of the gradient for
age>3Gyr
97-101 F5.3 --- e_cOLD [0.02/0.18] Error on intercept of the
gradient for age>3Gyr
103-108 F6.3 --- PCCOLD [-0.62/0.9] Pearson correlation coefficient
of the gradient for age>3Gyr
--------------------------------------------------------------------------------
Acknowledgements:
Laura Magrini, laura.magrini(at)inaf.it
References:
Randich et al., 2022A&A...666A.121R 2022A&A...666A.121R, Cat. J/A+A/666/A121
Grevesse et al., 2007, SSR, 130, 105
(End) Patricia Vannier [CDS] 24-Jan-2023