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arXiv 1504.05960astro-ph.GA
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活动星系核的宽带光学和红外星等到单色连续光光度的经验转换

Empirical Conversions of Broad-Band Optical and Infrared Magnitudes to Monochromatic Continuum Luminosities for Active Galactic Nuclei

Szymon Kozłowski

摘要:

我们使用来自斯隆数字巡天(SDSS)数据发布7(DR 7)的105783个类星体的公共数据,包括5100 nm,3000 nm和1350 nm的光谱单色光度,以及相应的观测到的宽带ugriz,VRI(转换),JHK和WISE等,并推导出独立于宇宙学模型的宽带单色光度比。该比值跨越z=0.1-4.9的红移范围,并且可以作为测量测热光度、宽线区(BLR)半径和/或黑洞质量的代理,只要通量校准光谱不可用或现有光谱具有低信噪比。它们以表格和参数形式提供。

英文摘要:

We use public data for 105783 quasars from The Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) that include spectral monochromatic luminosities at 5100Å, 3000Å, and 1350Å, and the corresponding observed broad-band ugriz, VRI (converted), JHK and WISE magnitudes, and derive broad-band-to-monochromatic luminosity ratios independent of a cosmological model. The ratios span the redshift range of z=0.1-4.9 and may serve as a proxy for measuring the bolometric luminosity, broad line region (BLR) radii and/or black hole masses, whenever flux-calibrated spectra are unavailable or the existing spectra have low signal-to-noise ratios. They are provided both in tabular and parametric form.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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