Update X-ray binary catalog: 301 sources

README.md

@@ -3,7 +3,7 @@ license: cc-by-4.0
 pretty_name: "X-ray Binary Catalog"
 language:
   - en
-description: "Merged catalog of high-mass and low-mass X-ray binaries from HEASARC (Liu et al. 2006/2007)"
+description: "Merged catalog of high-mass and low-mass X-ray binaries from HEASARC (Liu et al. 2006/2007).  X-ray binaries are stellar systems in which a compact object (neutron star or black hole) accretes matter "
 task_categories:
   - tabular-classification
 tags:
@@ -31,113 +31,62 @@ configs:
 
 # X-ray Binary Catalog
 
+
 <div align="center">
   <img src="banner.jpg" alt="A youthful globular star cluster observed by the Hubble Space Telescope" width="400">
   <p><em>Credit: NASA/ESA/Hubble</em></p>
 </div>
 
-*Part of the [Astronomy Datasets](https://huggingface.co/collections/juliensimon/astronomy-datasets-69c24caf2f17e36128946743) and [Stellar Catalogs](https://huggingface.co/collections/juliensimon/stellar-catalogs-69c24caf2f17e36128946744) collections on Hugging Face.*
-
-![Update X-ray Binaries](https://github.com/juliensimon/space-datasets/actions/workflows/update-xray-binaries.yml/badge.svg)
-![Updated](https://img.shields.io/badge/dynamic/json?url=https://raw.githubusercontent.com/juliensimon/space-datasets/main/status.json&query=$.xray-binaries&label=updated&color=brightgreen)
 
-Merged catalog of **305** X-ray binaries (116 high-mass, 189 low-mass) from NASA HEASARC,
-combining the HMXB catalog (Liu, van Paradijs & van den Heuvel 2006) and the LMXB catalog (Liu, van Paradijs & van den Heuvel 2007).
+*Part of a [dataset collection](https://huggingface.co/collections/juliensimon/astronomy-datasets-69c24caf2f17e36128946743) on Hugging Face.*
 
 ## Dataset description
 
-X-ray binaries are stellar systems in which a compact object (neutron star or black hole) accretes matter from a
-companion star, producing intense X-ray emission. They are divided into two classes based on the mass of the donor star:
+Merged catalog of high-mass and low-mass X-ray binaries from HEASARC (Liu et al. 2006/2007).
+
+X-ray binaries are stellar systems in which a compact object (neutron star or black hole) accretes matter from a companion star, producing intense X-ray emission. They are divided into two classes based on the mass of the donor star:
+
+High-Mass X-ray Binaries (HMXBs): The donor is a massive O or B star (typically >10 solar masses). Accretion occurs via stellar wind or Roche lobe overflow. HMXBs are found in star-forming regions and include Be/X-ray binaries (the largest subclass) and supergiant X-ray binaries.
 
-- **High-Mass X-ray Binaries (HMXBs)**: The donor is a massive O or B star (typically >10 solar masses). Accretion
-  occurs via stellar wind or Roche lobe overflow. HMXBs are found in star-forming regions and include Be/X-ray
-  binaries (the largest subclass) and supergiant X-ray binaries.
+Low-Mass X-ray Binaries (LMXBs): The donor is a low-mass star (typically <1 solar mass). Accretion proceeds through Roche lobe overflow, forming a bright accretion disk. LMXBs are concentrated toward the Galactic center and globular clusters. They include the Z and Atoll sources and the soft X-ray transients.
 
-- **Low-Mass X-ray Binaries (LMXBs)**: The donor is a low-mass star (typically <1 solar mass). Accretion proceeds
-  through Roche lobe overflow, forming a bright accretion disk. LMXBs are concentrated toward the Galactic center
-  and globular clusters. They include the Z and Atoll sources (classified by their X-ray color-color diagrams) and
-  the soft X-ray transients.
+X-ray binaries are natural laboratories for studying accretion physics, strong gravity, and the equation of state of ultra-dense matter. Their X-ray variability (pulsations, quasi-periodic oscillations, thermonuclear bursts) encodes information about the compact object's mass, spin, and magnetic field.
 
-X-ray binaries are natural laboratories for studying accretion physics, strong gravity, and the equation of state of
-ultra-dense matter. Their X-ray variability (pulsations, quasi-periodic oscillations, thermonuclear bursts) encodes
-information about the compact object's mass, spin, and magnetic field. Several black hole mass measurements come from
-dynamical studies of X-ray binary orbits.
 
-This dataset merges the two standard reference catalogs maintained at HEASARC, providing a unified view of the known
-Galactic X-ray binary population with positions, X-ray fluxes, orbital periods, and companion star classifications.
+This dataset is suitable for **tabular classification** tasks.
 
 ## Schema
 
-| Column | Type | Description |
-|--------|------|-------------|
-| `__row` | string |  |
-| `name` | string | Source designation / common name |
-| `xray_type` | string |  |
-| `ra` | float | Right ascension (J2000, degrees) |
-| `dec` | float | Declination (J2000, degrees) |
-| `lii` | string | Galactic longitude (degrees) |
-| `bii` | string | Galactic latitude (degrees) |
-| `position_type` | string |  |
-| `optical_name` | string |  |
-| `ref_optical` | string |  |
-| `vmag_limit` | string |  |
-| `vmag` | string | Visual magnitude of the optical counterpart |
-| `vmag_min` | string |  |
-| `vmag_flag` | string |  |
-| `bv_color` | string |  |
-| `bv_color_flag` | string |  |
-| `bv_color_max` | string |  |
-| `ub_color` | string |  |
-| `reddening` | string |  |
-| `reddening_max` | string |  |
-| `reddening_flag` | string |  |
-| `ref_photometry` | string |  |
-| `jmag` | string |  |
-| `hmag_limit` | string |  |
-| `hmag` | string |  |
-| `kmag_limit` | string |  |
-| `kmag` | string |  |
-| `fx_limit` | string |  |
-| `fx` | string |  |
-| `fx_max` | string |  |
-| `fx_range` | string |  |
-| `ref_fx` | string |  |
-| `porb` | string |  |
-| `porb_flag` | string |  |
-| `pulse_per` | string |  |
-| `pulse_per_flag` | string |  |
-| `ref_periods` | string |  |
-| `spect_type` | string |  |
-| `alt_name_1` | string |  |
-| `alt_name_1_flag` | string |  |
-| `alt_name_2` | string |  |
-| `alt_name_3` | string |  |
-| `class` | string | Source classification (e.g., Be/X, SFXT, Atoll, Z) |
-| `__x_ra_dec` | string |  |
-| `__y_ra_dec` | string |  |
-| `__z_ra_dec` | string |  |
-| `binary_type` | string | Binary type: HMXB or LMXB |
-| `ref_optical_name` | string |  |
-| `reddening_limit` | string |  |
-| `flux_limit` | string |  |
-| `flux` | float | X-ray flux (mCrab or source-specific units) |
-| `flux_max` | string |  |
-| `flux_range` | string |  |
-| `ref_flux` | string |  |
-| `pulse_period` | string |  |
-| `lmxb_notes` | string |  |
+| Column | Type | Description | Sample | Null % |
+|--------|------|-------------|--------|--------|
+| `name` | str | Primary catalog designation (e.g., '4U 1700-37', 'Cygnus X-1') or IAU X-ray survey name; from HMXB/LMXB catalog column 'Name' | 1A 0535+262 | 0.0% |
+| `ra` | float64 | Right ascension, ICRS J2000.0 (degrees, 0-360) | 84.7275 | 0.0% |
+| `dec` | float64 | Declination, ICRS J2000.0 (degrees, -90 to +90) | 26.31583333 | 0.0% |
+| `lii` | float64 | Galactic longitude (degrees, 0-360) | 181.4450493 | 0.0% |
+| `bii` | float64 | Galactic latitude (degrees, -90 to +90); LMXBs concentrate toward the Galactic center (\|b\| < 10 deg) | -2.64342463 | 0.0% |
+| `vmag` | float64 | Visual (V-band) magnitude of the optical counterpart; null if unmeasured or heavily obscured | 8.9 | 57.5% |
+| `class` | int64 | Sub-class of the binary (e.g., 'Be/X' for Be X-ray binary, 'SFXT' for supergiant fast X-ray transient, 'Atoll' or 'Z' for LMXB X-ray color-color diagram type) | 1310 | 0.0% |
+| `binary_type` | str | Binary class: 'HMXB' (high-mass donor, typically O/B star >10 Msun) or 'LMXB' (low-mass donor, Roche-lobe overflow, <1 Msun); derived from the source catalog | HMXB | 0.0% |
+| `flux` | float64 | Typical X-ray flux in mCrab; 1 Crab ~ 2.4e-8 erg/cm^2/s in 2-10 keV; null if not measured | 50000.0 | 39.9% |
 
 ## Quick stats
 
-- **305** X-ray binaries total
-- **116** High-Mass X-ray Binaries (HMXB)
-- **189** Low-Mass X-ray Binaries (LMXB)
+- **301** X-ray binaries total
+- **114** High-Mass X-ray Binaries (HMXB)
+- **187** Low-Mass X-ray Binaries (LMXB)
 
 ## Usage
 
 ```python
 from datasets import load_dataset
 
+ds = load_dataset("juliensimon/xray-binary-catalog", split="train")
+df = ds.to_pandas()
+```
+
+```python
+from datasets import load_dataset
+
 ds = load_dataset("juliensimon/xray-binary-catalog", split="train")
 df = ds.to_pandas()
 
@@ -158,45 +107,38 @@ ax.set_xlabel("RA (deg)")
 ax.set_ylabel("Dec (deg)")
 ax.legend()
 ax.set_title("X-ray Binary Sky Distribution")
+plt.show()
 ```
 
 ## Data source
 
-All data comes from the HEASARC X-ray binary catalogs:
-- [HMXB Catalog (hmxbcat)](https://heasarc.gsfc.nasa.gov/W3Browse/all/hmxbcat.html) — Liu, van Paradijs & van den Heuvel (2006)
-- [LMXB Catalog (lmxbcat)](https://heasarc.gsfc.nasa.gov/W3Browse/all/lmxbcat.html) — Liu, van Paradijs & van den Heuvel (2007)
+https://heasarc.gsfc.nasa.gov/W3Browse/all/hmxbcat.html
 
-Accessed via the HEASARC TAP protocol.
-
-## Update schedule
+## Related datasets
 
-Quarterly (February, May, August, November 1st at 08:00 UTC) via [GitHub Actions](https://github.com/juliensimon/space-datasets).
+- [juliensimon/pulsar-catalog](https://huggingface.co/datasets/juliensimon/pulsar-catalog)
 
-## Related datasets
+- [juliensimon/mcgill-magnetar-catalog](https://huggingface.co/datasets/juliensimon/mcgill-magnetar-catalog)
 
-- [pulsar-catalog](https://huggingface.co/datasets/juliensimon/pulsar-catalog) — ATNF Pulsar Catalog
-- [mcgill-magnetar-catalog](https://huggingface.co/datasets/juliensimon/mcgill-magnetar-catalog) — McGill Magnetar Catalog
-- [chandra-x-ray-sources](https://huggingface.co/datasets/juliensimon/chandra-x-ray-sources) — Chandra Source Catalog
-- [gravitational-wave-events](https://huggingface.co/datasets/juliensimon/gravitational-wave-events) — LIGO/Virgo GW Events
+- [juliensimon/chandra-x-ray-sources](https://huggingface.co/datasets/juliensimon/chandra-x-ray-sources)
 
-## Pipeline
+- [juliensimon/gravitational-wave-events](https://huggingface.co/datasets/juliensimon/gravitational-wave-events)
 
-Source code: [juliensimon/space-datasets](https://github.com/juliensimon/space-datasets)
+> If you find this dataset useful, please consider [giving it a like](https://huggingface.co/datasets/juliensimon/xray-binary-catalog) on Hugging Face. It helps others discover it.
 
-## Support
+## About the author
 
-If you find this dataset useful, please give it a heart on the [dataset page](https://huggingface.co/datasets/juliensimon/xray-binary-catalog) and share feedback in the Community tab! Also consider giving a star to the [space-datasets](https://github.com/juliensimon/space-datasets) repo.
+Created by [Julien Simon](https://julien.org) — AI Operating Partner at Fortino Capital. Part of the [Space Datasets](https://julien.org/datasets) collection.
 
 ## Citation
 
 ```bibtex
 @dataset{xray_binary_catalog,
-  author = {Simon, Julien},
   title = {X-ray Binary Catalog},
+  author = {juliensimon},
   year = {2026},
-  publisher = {Hugging Face},
   url = {https://huggingface.co/datasets/juliensimon/xray-binary-catalog},
-  note = {Based on HEASARC HMXB (Liu et al. 2006) and LMXB (Liu et al. 2007) catalogs}
+  publisher = {Hugging Face}
 }
 ```
 

data/xray-binaries.parquet

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