Table 2
Solar twin catalogs adopted for comparison (incomplete manual compilation).
| Paper | Spectrograph | Typical error | # samples | Available? | ||||
|---|---|---|---|---|---|---|---|---|
| Teff (K) | log g | [M/H] | Ntotala | Ntwin b | Age | Abundancesc | ||
| This work | Gaia DR3 GSP-Spec | 51 | 0.05 | 0.03 | 6594 | 6594 | Yes | Yes |
| Lehmann et al. (2025)d | GALAH DR3 | 38 | 0.03 | 0.02 | 72288 | 14571 | Yes | |
| Walsen et al. (2024)d | GALAH DR3 | 4 | 0.01 | 0.00 | 38320 | 13132 | e | Yes |
| Rampalli et al. (2024)d | Gaia DR3 RVS | 61 | 0.09 | 0.04 | 17412 | 5347 | Yes | Yes |
| Sun et al. (2025a) | MIKE | 22 | 0.05 | 0.01 | 25 | 13 | Yes | Yes |
| Carlos et al. (2025) | HARPS | 0.02 | 0.01 | 50 | 10 | Yes | Yes | |
| Martos et al. (2025) | HARPS | 10 | 0.02 | 0.01 | 99 | 61 | Yes | |
| Carvalho-Silva et al. (2025) | HARPS | 7 | 0.02 | 0.01 | 126 | 7 | Yes | |
| Sun et al. (2025b) | MIKE | 20 | 0.05 | 0.01 | 17 | 7 | Yes | Yes |
| Plotnikova et al. (2024) | HARPS | 9 | 0.03 | 0.01 | 130 | 48 | Yes | Yes |
| Shejeelammal et al. (2024) | HARPS | 5 | 0.02 | 0.01 | 233 | 83 | Yes | Yes |
| Rathsam et al. (2023) | HARPS | 6 | 0.02 | 0.01 | 74 | 17 | Yes | |
| Martos et al. (2023) | HARPS | 4 | 0.01 | 0.00 | 118 | 62 | Yes | |
| Lehmann et al. (2023)d | HERMES | 77 | 0.06 | 0.04 | 877 | 99 | Yes | |
| Spina et al. (2021) | HARPS | 10 | 0.03 | 0.01 | 60 | 10 | Yes | Yes |
| Yana Galarza et al. (2021) | Goodman/ARCES/2dcoude | 11 | 0.03 | 0.01 | 129 | 58 | Yes | |
| Nissen et al. (2020) | HARPS | 9 | 0.02 | 0.01 | 72 | 27 | Yes | Yes |
| Liu et al. (2020) | HIRES | 14 | 0.03 | 0.01 | 83 | 7 | Yes | Yes |
| Casali et al. (2020) | HARPS | 8 | 0.02 | 0.01 | 560 | 223 | Yes | Yes |
| Delgado Mena et al. (2019) | HARPS | 1059 | 93 | Yes | ||||
| Lorenzo-Oliveira et al. (2018) | HARPS | 4 | 0.01 | 0.00 | 82 | 64 | Yes | |
| Adibekyan et al. (2018) | HARPS/UVES/FEROS | 26 | 0.04 | 0.02 | 54 | 17 | Yes | Yes |
| Bedell et al. (2018) | HARPS | 79 | 64 | f | Yes | |||
| Spina et al. (2018) | HARPS | 4 | 0.01 | 0.00 | 79 | 64 | Yes | Yes |
| Delgado Mena et al. (2017) | HARPS | 28 | 0.04 | 0.02 | 1059 | 93 | Yes | |
| Reddy & Lambert (2017) | HARPS | 24 | 22 | Yes | Yes | |||
| Beck et al. (2017) | HERMES | 70 | 0.15 | 0.04 | 18 | 3 | Yes | |
| López-Valdivia et al. (2017) | CanHiS | 59 | 0.27 | 0.08 | 38 | 5 | Yes | |
| Spina et al. (2016a) | UVES | 3 | 0.01 | 0.00 | 9 | 9 | Yes | Yes |
| Nissen (2016) | HARPS | 6 | 0.01 | 0.01 | 21 | 18 | Yes | Yes |
| Adibekyan et al. (2016) | HARPS/UVES | 22 | 0.03 | 0.02 | 39 | 9 | Yes | Yes |
| Tucci Maia et al. (2016) | MIKE | 6 | 0.02 | 0.01 | 88 | 75 | Yes | Yes |
| Mahdi et al. (2016) | ELODIE | 10 | 0.02 | 0.01 | 56 | 40 | Yes | Yes |
| Spina et al. (2016b) | HIRES | 10 | 0.03 | 0.01 | 14 | 14 | Yes | Yes |
| Nissen (2015) | HARPS | 6 | 0.01 | 0.01 | 21 | 18 | Yes | Yes |
| Datson et al. (2015) | FEROS | 40 | 0.07 | 0.03 | 148 | 77 | ||
| Gonzalez (2015) | Sandiford | 50 | 0.07 | 0.04 | 31 | 6 | Yes | |
| Ramírez et al. (2014) | MIKE | 6 | 0.02 | 0.01 | 88 | 75 | Yes | |
| López-Valdivia et al. (2014) | B&C | 50 | 0.25 | 0.06 | 233 | 34 | ||
| Gonzalez (2014) | Sandiford/2dcoude | 40 | 0.06 | 0.03 | 37 | 13 | Yes | Yes |
| Porto de Mello et al. (2014) | OPD/FEROS | 55 | 29 | Yes | ||||
| Tsantaki et al. (2013) | HARPS | 23 | 0.06 | 0.02 | 451 | 38 | Yes | |
| Adibekyan et al. (2012) | HARPS | 1111 | 93 | Yes | ||||
| da Silva et al. (2012) | CTIO | 25 | 7 | Yes | Yes | |||
| Sousa et al. (2011) | HARPS | 35 | 0.05 | 0.02 | 582 | 49 | ||
| González Hernández et al. (2010) | HARPS/UVES/UES | 31 | 0.04 | 0.02 | 11 | 1 | Yes | |
| Ghezzi et al. (2010) | FEROS | 38 | 0.13 | 0.03 | 262 | 22 | Yes | |
| Baumann et al. (2010) | 2dcoude/HARPS | 39 | 0.06 | 0.03 | 117 | 65 | Yes | |
| Gonzalez et al. (2010) | 2dcoude | 33 | 0.05 | 0.02 | 159 | 18 | Yes | Yes |
| Ramírez et al. (2009) | 2dcoude | 0.02 | 64 | 37 | Yes | |||
| Neves et al. (2009) | HARPS | 451 | 44 | Yes | ||||
| Pasquini et al. (2008) | FLAMES | 60 | 59 | 36g | ||||
| Sousa et al. (2008) | HARPS | 24 | 0.04 | 0.02 | 451 | 44 | ||
| Meléndez & Ramírez (2007) | 2dcoude | 36 | 0.04 | 0.02 | 4 | 4 | Yes | |
| Takeda et al. (2007) | HIDES | 118 | 55 | Yes | ||||
| Meléndez et al. (2006) | HIRES | 30 | 0.03 | 0.03 | 2 | 2 | Yes | Yes |
| Laws et al. (2003) | 2dcoude/CTIO | 44 | 0.07 | 0.03 | 31 | 3 | Yes | |
| Gonzalez et al. (2001) | 2dcoude/CTIO | 39 | 0.07 | 0.03 | 22 | 1 | Yes | Yes |
Notes. (a)Total number of targets analyzed. (b)Number of targets satisfying our solar twin criteria (Teff, log g, and [M/H] within ±200 K, ±0.2, and ±0.1 dex around the solar values, respectively). (c)We did not mark studies that provide abundances for only a very limited set of elements (e.g., Li only) as having abundances available. (d)Using a data-driven method for determining stellar parameters. (e)Walsen et al. (2024) adopted ages from GALAH DR3 (Sharma et al. 2018; Buder et al. 2021). (f)Bedell et al. (2018) adopted ages determined by Spina et al. (2018). (g)We only considered Teff in calculating Ntwin for Pasquini et al. (2008) because they did not determine [Fe/H] and log g of their M67 stars.
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