RELICS High-z Catalog
At the link below, find the public catalog described by Strait et al., 2020.
Included are HST and Spitzer fluxes and uncertainties for 207 of the 321
RELICS HST-selected candidates from Salmon et al., 2020,
along with
physical properties and uncertainties from both methods described
in the paper.
View RELICS High-z Catalog
| Column | Description/Units |
|---|---|
| id | Cluster name + ID from SExtractor catalog (given in Salmon et al., 2020) |
| ra | Right Ascension, degrees |
| dec | Declination, degrees |
| f_XXXw | Fluxes for band at XXX central wavelength (Hubble and Spitzer), in nJy |
| e_XXXw | Flux uncertainties for band at XXX central wavelength (Hubble and Spitzer), in nJy |
| cv1, cv2 | Maximum covariance index for Spitzer/IRAC channels 1, 2: the ratio of the covariance of the object with its closest/brightest neighbor and its own variance (>1 is bad) |
| mu_medianX | Median magnification for type X lens model |
| mag_model_typeX | Type of lens model associated with mu_medianX. For Glafic, see Oguri et al., 2010. For Lenstool, see Jullo et al., 2009. For LTM, see Zitrin et al., 2013. All models are available on MAST. |
| mu_mean(medians) | For galaxies with more than one type of model available, the mean of median magnifications. |
| methodA_log_age_best | Log best-fit formation age (in log10(Years)) using Method A (BC03+emission lines, constant SFH) |
| methodA_log_mass_best | Log best-fit stellar mass (in log10(M⊙)) using Method A (BC03+emission lines, constant SFH) |
| methodA_zpeak | Best-fit redshift using Method A (EAZY default templates, no model assumptions) |
| methodA_sfr_best | Best-fit star formation rate (in M⊙/yr) using Method A (BC03+emission lines, constant SFH) |
| methodA_ebmv_best | Best-fit E(B-V) (in magnitudes) using Method A (BC03+emission lines, constant SFH) |
| absmag | Absolute magnitude, calculated using Method A redshifts |
| methodA_zmed, methodA_zu68, methodA_zl68 | Median, upper, and lower 68% confidence limits on redshift from posterior using Method A (EAZY default templates, no model assumptions) |
| methodA_smass_med, methodA_smass_u68, methodA_smass_l68 | Median, upper, and lower 68% confidence limits on stellar mass (in M⊙) from posterior using Method A described in Strait et al., 2020 (BC03+emission lines, constant SFH) |
| methodA_sfr_med, methodA_sfr_u68, methodA_sfr_l68 | Median, upper, and lower 68% confidence limits on star formation rate (in M⊙/yr) from posterior using Method A described in Strait et al., 2020 (BC03+emission lines, constant SFH) |
| methodA_ebmv_med, methodA_ebmv_u68, methodA_ebmv_l68 | Median, upper, and lower 68% confidence limits on E(B-V) (in magnitudes) from posterior using Method A described in Strait et al., 2020 (BC03+emission lines, constant SFH) |
| methodA_age_form_med, methodA_age_form_u68, methodA_age_form_l68 | Median, upper, and lower 68% confidence limits on formation age (in Gyr) from posterior using Method A described in Strait et al., 2020 (BC03+emission lines, constant SFH) |
| methodB_zmed, methodB_zu68, methodB_zl68 | Median, upper, and lower 68% confidence limits on redshift from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| methodB_smass_med, methodB_smass_u68, methodB_smass_l68 | Median, upper, and lower 68% confidence limits on stellar mass (in M⊙) from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| methodB_sfr_med, methodB_sfr_u68, methodB_sfr_l68 | Median, upper, and lower 68% confidence limits on star formation rate (in M⊙/yr) from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| methodB_age_form_med, methodB_age_form_u68, methodB_age_form_l68 | Median, upper, and lower 68% confidence limits on formation age (in Gyr) from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| methodB_age_MW_med, methodB_age_MW_u68, methodB_age_MW_l68 | Median, upper, and lower 68% confidence limits on mass-weighted age (in Gyr, see eqn. 3) from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| methodB_metallicity_med, methodB_metallicity_u68, methodB_metallicity_l68 | Median, upper, and lower 68% confidence limits on metallicity (in Z⊙) from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| methodB_dust_med, methodB_dust_u68, methodB_dust_l68 | Median, upper, and lower 68% confidence limits on extinction, A_V (in magnitudes) from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| methodB_ionization_med, methodB_ionization_u68, methodB_ionization_l68 | Median, upper, and lower 68% confidence limits on ionization parameter log(U) from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| methodB_EW_OIII+Hb_med, methodB_EW_OIII+Hb_u68, methodB_EW_OIII+Hb_l68 | Median, upper, and lower 68% confidence limits on rest-frame equivalent width of OIII+Hb (in Angstroms) from posterior using Method B described in Strait et al., 2020 (BPASS, variable exponential SFH) |
| Method A | Method B | |
|---|---|---|
| Software | EAZY | BAGPIPES |
| Redshift | 0--12 | 4--11 |
| Formation age | 10Myr -- age of universe | 1 Myr -- age of universe |
| Metallicity | 0.2Z⊙ | 0.005 -- 5Z⊙ |
| Ionization log(U) | not known a priori | -4 -- -1 |
| Dust | Small Magellenic Cloud, E(B-V) = 0--1 | Calzetti, A_V = 0 -- 3 |
| Templates | BC03+nebular emission | BPASS+CLOUDY nebular emission |