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TopOfMRT.txt
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TopOfMRT.txt
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Title: Accurate, Precise, and Physically Self-consistent Ages and Metallicities for 400,000 Solar Neighborhood Subgiant Branch Stars, submitted to The Astrophysical Journal of the AAS
Authors: Nataf D.M., Schlaufman K., Reggiani H., Hahn I.
Table: Summary input data and derived parameter for 401,819 subgiants
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Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- dr3_source_id ? source ID from Gaia DR3 (1)
21- 39 I19 --- objid_GALEX ? source ID from GALEX (2)
41- 54 F14.10 --- ra [0.0/360.0], right ascension in ICRS at the reference epoch 2016 (1)
56- 69 F14.10 --- dec [-89.95/89.36], declination in ICRS at the reference epoch 2016 (1)
71- 79 F9.5 --- ra2000 [0.0/360.0], right ascension in ICRS at the reference epoch 2000 (1)
81- 89 F9.5 --- dec2000 [-89.95/89.36], declination in ICRS at the reference epoch 2000 (1)
91-100 F10.6 deg l2000 [0.0/360.0], Galactic Longitude of the object at reference epoch 2000
102-111 F10.6 deg b2000 [-89.81/89.88], Galactic Latitude of the object at reference epoch 2000
113-119 F7.4 mag phot_g_mean_mag [6.57/14.99], Gaia G mag from Gaia DR3 catalog (1)
121-125 F5.3 --- mass_16 posterior 16th percentile value of initial stellar mass in solar masses
127-131 F5.3 --- mass posterior median value of initial stellar mass in solar masses
133-137 F5.3 --- mass_84 posterior 84th percentile value of initial stellar mass in solar masses
139-144 F6.3 --- logage_16 posterior 16th percentile value of log(age/yr)
146-151 F6.3 --- logage posterior median value of log(age/yr)
153-158 F6.3 --- logage_84 posterior 84th percentile value of log(age/yr)
160-165 F6.3 --- feh_16 [-2.78/0.59], posterior 16th percentile value of [Fe/H]
167-172 F6.3 --- feh [-2.73/0.59], posterior median value of [Fe/H]
174-179 F6.3 --- feh_84 [-2.66/0.59], posterior 84th percentile value of [Fe/H]
181-185 F5.3 --- AV_model_16 posterior 16th percentile value of extinction in V-band
187-191 F5.3 --- AV_model posterior median value of extinction in V-band
193-197 F5.3 --- AV_model_84 posterior 84th percentile value of extinction in V-band
199-202 F5.0 --- Teff_16 posterior 16th value of stellar effective temperature
204-207 F5.0 --- Teff posterior median value of stellar effective temperature
209-212 F5.0 --- Teff_84 posterior 84th value of stellar effective temperature
214-217 F4.2 --- logg_16 posterior 16th percentile value of the logarithm of stellar surface gravity
219-222 F4.2 --- logg posterior median value of the logarithm of stellar surface gravity
224-227 F4.2 --- logg_84 posterior 84th percentile value of the logarithm of stellar surface gravity
229-235 F7.1 --- GP_Jp [-3546.78/3327.56]? kpc km/s (3)
237-242 F6.1 --- GP_Jr [0.0/6972.86]? kpc km/s (3)
244-249 F6.1 --- GP_Jz [0.0/3477.56]? kpc km/s (3)
251-257 F7.1 --- GP_Lz [-3546.78/3327.56]? Orbital angular momentum in
259-266 F8.1 --- GP_E [-83540.05/34534.18]? (km/s)^2 (3)
268-271 F4.2 --- GP_Rperi [0.04/9.51]? pericenter of orbit in kpc (3)
273-278 F6.2 --- GP_Rap [6.79/122.51]? apocenter of orbit in kpc (3)
280-284 F5.2 --- GP_zmax [0.0/78.95]? peak displacement of orbit from the Galactic plane in kpc (3)
286-289 F4.2 --- GP_ecc [0.0/1.0]? eccentricity of orbit (3)
291-293 F3.1 --- Blend "1" if photometry deemed unreliable, "0" otherwise
295-300 F6.4 --- Chance_pvalue p-value of excess noise in radial velocity when available (4)
302-306 F5.3 --- VarExcess [0.0/1.0]? Percentile of G-band photometric variability
308-314 A7 --- Sample Selection function: primary sample or metal-poor annex
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Note (1): Gaia DR3; see Gaia Collaboration et al. (2023A&A...674A...1G)
Note (2): Revised Catalog of GALEX Ultraviolet Sources, see Bianchi et al. (2017ApJS..230...24B)
Note (3): Computed using Galpy, see Bovy (2015ApJS..216...29B)
Note (4): Metric for noise in radial velocity fits, see Chance et al. (2022arXiv220611275C)
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