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arXiv 2502.05830astro-ph.GAastro-ph.IM
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J-PLUS:空间分辨星系中 Hα 发射线图的光谱验证

J-PLUS: Spectroscopic validation of H$α$ emission line maps in spatially resolved galaxies

P. T. Rahna, M. Akhlaghi, C. López-Sanjuan, R. Logroño-García, D. J. Muniesa, H. Domínguez-Sánchez, J. A. Fernández-Ontiveros, David Sobral, A. Lumbreras-Calle,… 展开作者

P. T. Rahna, M. Akhlaghi, C. López-Sanjuan, R. Logroño-García, D. J. Muniesa, H. Domínguez-Sánchez, J. A. Fernández-Ontiveros, David Sobral, A. Lumbreras-Calle, A. L. Chies-Santos, J. E. Rodríguez-Martín, S. Eskandarlou, A. Ederoclite, A. Alvarez-Candal, H. Vázquez Ramió, A. J. Cenarro, A. Marín-Franch, J. Alcaniz, R. E. Angulo, D. Cristóbal-Hornillos, R. A. Dupke, C. Hernández-Monteagudo, M. Moles, L. Sodré, J. Varela

AI总结:

本文构建自动化流程生成 J-PLUS 近邻星系空间分辨 Hα+[NII] 图与 SED,并利用 PHANGS-MUSE、CALIFA 和 MaNGA 的 IFU 数据验证其可靠性。

摘要:

我们提出了一套专用自动化流程,用于构建空间分辨的 Hα+[NII] 发射图,并推导由 Javalambre Photometric Local Universe Survey(J-PLUS)观测的近邻星系(z < 0.0165)中 Hα 发射线区域在 12 个光学滤光片(5 个宽波段和 7 个窄/中波段)内的光谱能量分布(SED)。我们使用中心位于 6600 Å、宽度为 140 Å 的 J0660 滤光片来追踪 Hα + [NII] 发射,并使用 r 和 i 宽波段估计恒星连续谱。在扣除连续谱后,我们生成了纯发射线图像,并在其中检测 Hα 发射线区域。该方法还通过基于 J-PLUS 滤光片构建合成窄带,应用于来自 PHANGS-MUSE、CALIFA 和 MaNGA 巡天的积分场单元(IFU)光谱数据。研究样本包括这些 IFU 巡天与 J-PLUS 第三数据发布(DR3)的交叉匹配星表,在 z < 0.0165 范围内分别包含 2 个 PHANGS-MUSE、78 个 CALIFA 和 78 个 MaNGA 星系。我们比较了 J-PLUS 与 IFU 巡天得到的 Hα+[NII] 径向轮廓,发现二者在预期不确定度内具有良好一致性。我们还比较了在 J-PLUS 图像中检测到的发射线区域的 SED,复现了光谱数据中存在的主要光谱特征。最后,我们在考虑尺度差异后比较了 J-PLUS 与 IFU 巡天的发射流量,发现测量值差异仅为 2%,离散度为 7%。J-PLUS 数据为近邻星系提供了可靠的空间分辨 Hα+[NII] 发射图。我们提供了包含 IFU 数据的 158 个星系的 J-PLUS DR3 星表,其中包括发射图、恒星形成团块的 SED 以及径向轮廓。

英文摘要:

We present a dedicated automated pipeline to construct spatially resolved emission H$α$+[NII] maps and to derive the spectral energy distributions (SEDs) in 12 optical filters (five broad and seven narrow/medium) of H$α$ emission line regions in nearby galaxies (z $<$ 0.0165) observed by the Javalambre Photometric Local Universe Survey (J-PLUS). We used the $J0660$ filter of $140$Å width centered at $6600$Å to trace H$α$ + [NII] emission and $r$ and $i$ broad bands were used to estimate the stellar continuum. We create pure emission line images after the continnum subtraction, where the H$α$ emission line regions were detected. This method was also applied to Integral Field Unit (IFU) spectroscopic data from PHANGS-MUSE, CALIFA and MaNGA surveys by building synthetic narrow-bands based on J-PLUS filters. The studied sample includes the cross-matched catalog of these IFU surveys with J-PLUS third data release (DR3), amounting to $2$ PHANGS-MUSE, $78$ CALIFA, and $78$ MaNGA galaxies at $z < 0.0165$, respectively. We compared the H$α$+[NII] radial profiles from J-PLUS and the IFU surveys, finding good agreement within the expected uncertainties. We also compared the SEDs from the emission line regions detected in J-PLUS images, reproducing the main spectral features present in the spectroscopic data. Finally, we compared the emission fluxes from the J-PLUS and IFU surveys accounting for scale differences, finding a difference of only 2% with a dispersion of 7% in the measurements. The J-PLUS data provides reliable spatially resolved H$α$+[NII] emission maps for nearby galaxies. We provide the J-PLUS DR3 catalog for the $158$ galaxies with IFU data, including emission maps, SEDs of star-forming clumps, and radial profiles.

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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