catsHTM: A Tool for Fast Accessing and Cross-matching Large Astronomical Catalogs

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

Fast access to large catalogs is required for some astronomical applications. Here we introduce the catsHTM tool, consisting of several large catalogs reformatted into HDF5-based file format, which can be downloaded and used locally. To allow fast access, the catalogs are partitioned into hierarchical triangular meshes and stored in HDF5 files. Several tools are provided to perform efficient cone searches at resolutions spanning from a few arc-seconds to degrees, within a few milliseconds time. The first released version includes the following catalogs (by alphabetical order): 2MASS, 2MASS extended sources, AKARI, APASS, Cosmos, DECaLS/DR5, FIRST, GAIA/DR1, GAIA/DR2, GALEX/DR6Plus7, HSC/v2, IPHAS/DR2, NED redshifts, NVSS, Pan-STARRS1/ DR1, PTF photometric catalog, ROSAT faint source, SDSS sources, SDSS/DR14 spectroscopy, SkyMapper, Spitzer/SAGE, Spitzer/IRAC galactic center, UCAC4, UKIDSS/DR10, VST/ATLAS/DR3, VST/KiDS/DR3, WISE and XMM. We provide Python code that allows to perform cone searches, as well as MATLAB code for performing cone searches, catalog cross-matching, general searches, as well as load and create these catalogs.

اللغة الأصليةالإنجليزيّة
رقم المقال075002
الصفحات (من إلى)1-5
عدد الصفحات5
دوريةPublications of the Astronomical Society of the Pacific
مستوى الصوت130
رقم الإصدار989
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - يوليو 2018

All Science Journal Classification (ASJC) codes

  • !!Astronomy and Astrophysics
  • !!Space and Planetary Science

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