Update README.md

README.md

@@ -66,21 +66,21 @@ Contains the simulated physical parameters and lensing variables for each event.
 | `ObsGroup_0_chi2` | float64 | For binary events, the $\Delta\chi^2$ between the best-fitting single-lens (PSPL) model and the true simulated model ($\chi^2_{\text{PSPL\_fit}} - \chi^2_{\text{true}}$). For single-source single-lens events, this instead stores the $\Delta\chi^2$ of the true simulated model vs a flat baseline fit ($\chi^2_{\text{flat}} - \chi^2_{\text{true}}$). |
 | `is_out_of_season` | boolean | Flag indicating whether the event peak ($t_0$) falls in a seasonal gap (when Roman cannot observe the bulge). |
 | `t0lens1` | float64 | Time of closest approach for the primary lens. |
-| `tE_ref` | float64 | Einstein timescale (reference frame). |
-| `tE_helio` | float64 | Einstein timescale (heliocentric frame). |
+| `tE_ref` | float64 | Einstein timescale (observer reference frame). |
+| `tE_helio` | float64 | Einstein timescale (barycentric frame). |
 | `u0lens1` | float64 | Impact parameter. |
-| `rho` | float64 | Normalized source radius. |
+| `rho` | float64 | Ratio of source radius to the Einstein ring radius. |
 | `piE` | float64 | Microlens parallax magnitude. |
-| `piEE` | float64 | Parallax-East term. In equatorial coordinates. |
-| `piEN` | float64 | Parallax-North term. In equatorial coordinates. |
-| `piEll` | float64 | Parallax-parallel term. |
-| `piErp` | float64 | Parallax-perpendicular term. |
-| `rE` | float64 | Einstein radius. |
-| `thetaE` | float64 | Einstein angular radius. |
+| `piEE` | float64 | Parallax-East term. In ecliptic coordinates. |
+| `piEN` | float64 | Parallax-North term. In ecliptic coordinates. |
+| `piEll` | float64 | Parallax-component parallel to solar acceleration. |
+| `piErp` | float64 | Parallax-component perpendicular to solar acceleration. |
+| `rE` | float64 | Einstein radius of the primary lens mass (AU). |
+| `thetaE` | float64 | Einstein angular radius of the primary lens mass (mas). |
 | `ra_deg` | float64 | Event right ascension in degrees. |
 | `dec_deg` | float64 | Event declination in degrees. |
-| `galactic_l` | float64 | Galactic longitude. |
-| `galactic_b` | float64 | Galactic latitude. |
+| `galactic_l` | float64 | Galactic longitude (degrees). |
+| `galactic_b` | float64 | Galactic latitude (degrees). |
 | `fs_F146` | float64 | Source flux fraction in F146. |
 | `fs_F087` | float64 | Source flux fraction in F087. |
 | `fs_F213` | float64 | Source flux fraction in F213. |
@@ -98,9 +98,9 @@ Contains the simulated physical parameters and lensing variables for each event.
 | `Source2_F213` | float64 | Second source magnitude in F213. |
 | `Source_Is_Binary` | float64 | Flag indicating if the source is binary. |
 | `Source_q` | float64 | Mass ratio of the binary source. |
-| `Source_combined_logP` | float64 | Combined log period of binary source. |
-| `Source_total_mass` | float64 | Total mass of binary source. |
-| `Source2_rho` | float64 | Normalized radius of second source. |
+| `Source_combined_logP` | float64 | log period/days of binary source. |
+| `Source_total_mass` | float64 | Total mass of binary source (MSun). |
+| `Source2_rho` | float64 | Ratio of second source radius to the Einstein ring radius. |
 | `Source2_s` | float64 | Projected separation of second source. |
 | `Source2_alpha` | float64 | Angle of second source. |
 | `Source2_inc` | float64 | Inclination of second source. |
@@ -108,24 +108,24 @@ Contains the simulated physical parameters and lensing variables for each event.
 | `Planet_mass` | float64 | Mass of the planet (if present). |
 | `Planet_q` | float64 | Planet-to-star mass ratio. |
 | `Planet_s` | float64 | Projected separation of the planet. |
-| `Planet_period` | float64 | Orbital period of the planet. |
-| `Planet_semimajoraxis` | float64 | Semimajor axis of the planet. |
-| `Planet_orbphase` | float64 | Orbital phase of the planet. |
-| `Planet_inclination` | float64 | Inclination of the planet. |
-| `Lens_Mass` | float64 | Mass of the lens. |
-| `Lens_Dist` | float64 | Distance to the lens. |
-| `Lens_Teff` | float64 | Effective temperature of the lens. |
-| `Lens_logg` | float64 | Surface gravity of the lens. |
+| `Planet_period` | float64 | Orbital period of the planet (years). |
+| `Planet_semimajoraxis` | float64 | Semimajor axis of the planet (AU). |
+| `Planet_orbphase` | float64 | Orbital phase of the planet (degrees). |
+| `Planet_inclination` | float64 | Inclination of the planet (degrees). |
+| `Lens_Mass` | float64 | Mass of the lens (MSun). |
+| `Lens_Dist` | float64 | Distance to the lens (kpc). |
+| `Lens_Teff` | float64 | Effective temperature of the lens (K). |
+| `Lens_logg` | float64 | Surface gravity of the lens (cgs). |
 | `Lens_Fe_H` | float64 | Metallicity of the lens. |
-| `Source_Mass` | float64 | Mass of the source. |
-| `Source_Dist` | float64 | Distance to the source. |
-| `Source_Teff` | float64 | Effective temperature of the source. |
-| `Source_logg` | float64 | Surface gravity of the source. |
+| `Source_Mass` | float64 | Mass of the source (MSun). |
+| `Source_Dist` | float64 | Distance to the source (kpc). |
+| `Source_Teff` | float64 | Effective temperature of the source (K). |
+| `Source_logg` | float64 | Surface gravity of the source (cgs). |
 | `Source_Fe_H` | float64 | Metallicity of the source. |
-| `Source2_Mass` | float64 | Mass of the second source. |
-| `Source2_Dist` | float64 | Distance to the second source. |
-| `Source2_Teff` | float64 | Effective temperature of the second source. |
-| `Source2_logg` | float64 | Surface gravity of the second source. |
+| `Source2_Mass` | float64 | Mass of the second source (MSun). |
+| `Source2_Dist` | float64 | Distance to the second source (kpc). |
+| `Source2_Teff` | float64 | Effective temperature of the second source (K). |
+| `Source2_logg` | float64 | Surface gravity of the second source (cgs). |
 | `Source2_Fe_H` | float64 | Metallicity of the second source. |
 | `extinction_F146` | float64 | Extinction in F146. |
 | `extinction_F087` | float64 | Extinction in F087. |
@@ -144,7 +144,7 @@ Maps each unique observation time (BJD) and corresponding telescope coordinates
 
 ## Simulation Details & Disclaimer
 
-**Simulation Engine:** All events have been generated using the **GULLS** simulator. More information is available at [gulls-microlensing.github.io](https://gulls-microlensing.github.io/).
+**Simulation Engine:** All events have been generated using the **gulls** simulator. More information is available at [gulls-microlensing.github.io](https://gulls-microlensing.github.io/).
 
 **Stellar Populations:** The input stellar population catalogs used for the source and lens stars were generated using **synthpop** ([github.com/synthpop-galaxy/synthpop](https://github.com/synthpop-galaxy/synthpop)).
 
@@ -152,7 +152,7 @@ Maps each unique observation time (BJD) and corresponding telescope coordinates
 - There are three simulations included in this dataset:
     - `RMDC26_1S1L_ML`: Single lens and single source events.
     - `RMDC26_1S2L_ML`: One star - one planet lens and single source events.
-    - `RMDC26_2S2L_ML`: One star - one planet lens and potentially binary source events.
+    - `RMDC26_2S2L_ML`: One star - one planet lens and potentially binary source events without source orbital motion. 
 - Note that not all lenses and sources are necessarily involved in the microlensing event. `ObsGroup_0_chi2` > 160 for events from the binary lens simulations indicates that an anomaly may be present in the light curve. The anomalies may be planetary perturbations and caustic crossings, finite source effects, or parallax effects.
 
 **Representativeness & Weighting:**