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

Abstract

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.

Authors:
 [1];  [1]
  1. Weizmann Inst. of Science, Rehovot (Israel)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE
OSTI Identifier:
1543942
Resource Type:
Accepted Manuscript
Journal Name:
Publications of the Astronomical Society of the Pacific
Additional Journal Information:
Journal Volume: 130; Journal Issue: 989; Journal ID: ISSN 0004-6280
Publisher:
Astronomical Society of the Pacific (ASP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics

Citation Formats

Soumagnac, Maayane T., and Ofek, Eran O. catsHTM: A Tool for Fast Accessing and Cross-matching Large Astronomical Catalogs. United States: N. p., 2018. Web. doi:10.1088/1538-3873/aac410.
Soumagnac, Maayane T., & Ofek, Eran O. catsHTM: A Tool for Fast Accessing and Cross-matching Large Astronomical Catalogs. United States. doi:10.1088/1538-3873/aac410.
Soumagnac, Maayane T., and Ofek, Eran O. Tue . "catsHTM: A Tool for Fast Accessing and Cross-matching Large Astronomical Catalogs". United States. doi:10.1088/1538-3873/aac410. https://www.osti.gov/servlets/purl/1543942.
@article{osti_1543942,
title = {catsHTM: A Tool for Fast Accessing and Cross-matching Large Astronomical Catalogs},
author = {Soumagnac, Maayane T. and Ofek, Eran O.},
abstractNote = {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.},
doi = {10.1088/1538-3873/aac410},
journal = {Publications of the Astronomical Society of the Pacific},
number = 989,
volume = 130,
place = {United States},
year = {2018},
month = {6}
}

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