文章基本信息

标题：Total ALFALFA Neutral Hydrogen Fluxes for Extended Sources
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作者：G. Lyle Hoffman ; Jayce Dowell ; Martha P. Haynes 等
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2019
卷号：157
期号：5
页码：1-11
DOI：10.3847/1538-3881/ab14f6
语种：English
出版社：American Institute of Physics
摘要：A procedure is presented to improve on measurement of total H I fluxes for extended sources in the Arecibo Legacy Fast Arecibo L-band Feed Array (ALFALFA) survey of neutral hydrogen sources in the nearby universe. A number of tests of the procedure are detailed, and we verify that we recover all of the flux measured with much larger telescope beams. Total fluxes are reported for all sources (1) exceeding 10 Jy kms −1 in the α.100 catalog, or (2) with Uppsala General Catalog diameters 3.0arcmin or more, or (3) ALFALFA pipeline isophotal ellipse area more than 3.0 times the Arecibo beam. Total fluxes are also provided for a number of confused pairs and small groups including one or more of those high-flux sources. These data should be of use in baryonic Tully Fisher studies and other applications where the measurement of the total reservoir of neutral atomic gas is important.
关键词：irregular;galaxies: spiral;intergalactic medium;radio lines: galaxies Supporting material: machine-readable tables