differences for PR #250

Author: actions-user

01-query.md

@@ -238,7 +238,7 @@ Main Database accumulating catalogue version from which the catalogue
 release has been generated. It contains the basic source parameters,
 that is only final data (no epoch data) and no spectra (neither final
 nor epoch).
-Num. columns: 96
+Num. columns: 95
 ```
 
 ## Columns

02-coords.md

@@ -309,9 +309,9 @@ to GD-1:
 The axes of this figure are defined so the x-axis is aligned with the
 stars in GD-1, and the y-axis is perpendicular.
 
-- Along the x-axis (φ<sub>1</sub>) the figure extends from -100 to 20 degrees.
+- Along the x-axis ($\phi_1$) the figure extends from -100 to 20 degrees.
 
-- Along the y-axis (φ<sub>2</sub>) the figure extends from about -8 to 4 degrees.
+- Along the y-axis ($\phi_2$) the figure extends from about -8 to 4 degrees.
 
 Ideally, we would select all stars from this rectangle, but there are
 more than 10 million of them. This would be difficult to work with, and as
@@ -320,7 +320,7 @@ single query. While we are developing and testing code, it will be faster to wor
 with a smaller dataset.
 
 So we will start by selecting stars in a smaller rectangle near the
-center of GD-1, from -55 to -45 degrees φ<sub>1</sub> and -8 to 4 degrees φ<sub>2</sub>.
+center of GD-1, from -55 to -45 degrees $\phi_1$ and -8 to 4 degrees $\phi_2$.
 First we will learn how to represent these coordinates with Astropy.
 
 ## Transforming coordinates
@@ -392,7 +392,7 @@ which is "a Heliocentric spherical coordinate system defined by the
 orbit of the GD-1 stream". In this coordinate system, one axis is defined along
 the direction of the stream (the x-axis in Figure 1) and one axis is defined
 perpendicular to the direction of the stream (the y-axis in Figure 1).
-These are called the φ<sub>1</sub> and φ<sub>2</sub> coordinates, respectively.
+These are called the $\phi_1$ and $\phi_2$ coordinates, respectively.
 
 ```python
 from gala.coordinates import GD1Koposov10
@@ -457,7 +457,7 @@ rectangle that encompasses a small part of GD-1.
 This is easiest to define in GD-1 coordinates.
 
 The following variables define the boundaries of the rectangle in
-φ<sub>1</sub> and φ<sub>2</sub>.
+$\phi_1$ and $\phi_2$.
 
 ```python
 phi1_min = -55 * u.degree 
@@ -482,8 +482,8 @@ def make_rectangle(x1, x2, y1, y2):
     return xs, ys
 ```
 
-The return value is a tuple containing a list of coordinates in φ<sub>1</sub>
-followed by a list of coordinates in φ<sub>2</sub>.
+The return value is a tuple containing a list of coordinates in $\phi_1$
+followed by a list of coordinates in $\phi_2$.
 
 ```python
 phi1_rect, phi2_rect = make_rectangle(

03-transform.md

@@ -348,10 +348,10 @@ which is useful for two reasons:
 
 - By transforming the coordinates, we can identify stars that are
   likely to be in GD-1 by selecting stars near the centerline of the
-  stream, where φ<sub>2</sub> is close to 0.
+  stream, where $\phi_2$ is close to 0.
 
 - By transforming the proper motions, we can identify stars with
-  non-zero proper motion along the φ<sub>1</sub> axis, which are likely to be part of GD-1.
+  non-zero proper motion along the $\phi_1$ axis, which are likely to be part of GD-1.
 
 To do the transformation, we will put the results into a `SkyCoord`
 object.  In a previous episode, we created a `SkyCoord` object like
@@ -736,7 +736,7 @@ We can write a Pandas `DataFrame` to an HDF5 file like this:
 ```python
 filename = 'gd1_data.hdf'
 
-results_df.to_hdf(filename, key='results_df', mode='w')
+results_df.to_hdf(filename, 'results_df', mode='w')
 ```
 
 Because an HDF5 file can contain more than one Dataset, we have to

04-motion.md

@@ -568,7 +568,7 @@ We can add to our existing Pandas `DataFrame` to an HDF5 file by omitting the `m
 ```python
 filename = 'gd1_data.hdf'
 
-selected_df.to_hdf(filename, key='selected_df')
+selected_df.to_hdf(filename, 'selected_df')
 ```
 
 Because an HDF5 file can contain more than one Dataset, we have to
@@ -592,7 +592,7 @@ Hint: Since the file already exists, you should *not* use `mode='w'`.
 ## Solution
 
 ```python
-centerline_df.to_hdf(filename, key='centerline_df')
+centerline_df.to_hdf(filename, 'centerline_df')
 ```
 
 :::::::::::::::::::::::::

06-join.md

@@ -170,8 +170,8 @@ in the Pan-STARRS catalog.
 
 To do that we will:
 
-1. Use the `JOIN` operator to look up each Pan-STARRS `obj_id`, for the stars
-  we are interested in, in the `panstarrs1_best_neighbour` table using the `source_ids`
+1. Use the `JOIN` operator to look up each Pan-STARRS `obj_id` for the stars
+  we are interested in the `panstarrs1_best_neighbour` table using the `source_ids`
   that we have already identified.
 
 2. Use the `JOIN` operator again to look up the Pan-STARRS photometry for these stars

md5sum.txt

@@ -3,12 +3,12 @@
 "LICENSE.md" "e94126b93e27bae014999c2e84ee93f8" "site/built/LICENSE.md" "2025-02-03"
 "config.yaml" "0e6ae143684e18b060df625762ff29b4" "site/built/config.yaml" "2023-05-15"
 "index.md" "f26708b73f13068fbf4c8da251f0c3de" "site/built/index.md" "2024-03-08"
-"episodes/01-query.md" "cb33f044c4851bec575378c39439dfff" "site/built/01-query.md" "2025-12-09"
-"episodes/02-coords.md" "e7de8999ad1d7f5b75c046da8f9b7f9b" "site/built/02-coords.md" "2025-09-30"
-"episodes/03-transform.md" "23dfd020a38104055f5b02fb0f90a4c2" "site/built/03-transform.md" "2025-12-09"
-"episodes/04-motion.md" "a33a1b8a385200f422e33062bfbfe426" "site/built/04-motion.md" "2025-12-09"
+"episodes/01-query.md" "37929e0aebcf40db4336e9504910a01c" "site/built/01-query.md" "2025-12-09"
+"episodes/02-coords.md" "124773bd2f86314fafdbb7e22d991393" "site/built/02-coords.md" "2025-12-09"
+"episodes/03-transform.md" "da80b26a8fab055894a8b2574c7fca56" "site/built/03-transform.md" "2025-12-09"
+"episodes/04-motion.md" "c2642d107deb0093d78e111d359bd16f" "site/built/04-motion.md" "2025-12-09"
 "episodes/05-select.md" "5554b751dce605172b84815970a32937" "site/built/05-select.md" "2025-09-30"
-"episodes/06-join.md" "bb54605ee31fc6d60de02f9c7c4c8953" "site/built/06-join.md" "2025-12-09"
+"episodes/06-join.md" "63e16f5fd2d7246de02a63113e41e876" "site/built/06-join.md" "2025-12-09"
 "episodes/07-photo.md" "2a244ed606346a0befbaeb2ea006c488" "site/built/07-photo.md" "2024-03-08"
 "episodes/08-plot.md" "97b61b54dadf9ea944138e541156ee8f" "site/built/08-plot.md" "2025-09-30"
 "instructors/calculating_MIST_isochrone.md" "3201f3ca13dc11bbef74a7d24a433362" "site/built/calculating_MIST_isochrone.md" "2023-05-15"