论文标题
GMOSS：大型均匀领域的银河系调查和星系种群
The gMOSS: the galaxy survey and galaxy populations of the large homogeneous field
论文作者
论文摘要
我们介绍了$ \ sim $ \ sim $ 19,000星系的GMOSS（中型一米施密特望远镜调查的中型星系）中的GMOSS（4个宽带SDSS和16个中型频带过滤器）。我们在HS47.5-22场的中央部分观察到2.386 $ \ MATHRM {deg^2} $，其中包括Byurakan天体物理天文台的1-M Schmidt望远镜。 GMOSS是完整的通量限制星系样本，其阈值幅度为$ r $ sdss $ \ le $ 22.5 ab。从具有16个中型滤波器和$ U $ SDSS的光度测量值，我们可以为现场中的每个对象提供光谱能量分布，用于进一步分析。基于光谱模板与斑马软件匹配的光谱模板的星系分类和光度红移估计。获得的红移精度为$σ_\ mathrm {nmad} <0.0043 $。 Using the SED-fitting CIGALE code, we obtained the main properties of the stellar population of galaxies, such as rest-frame $(u - r)_{\mathrm{res}}$ colour, stellar mass, extinction, and mass-weighted age with a precision of $0.16 \pm 0.07$ mag, $0.14 \pm 0.04$ dex, $0.27 \pm 0.1$ mag,和$ 0.08 \ pm 0.04 $ dex。使用尘埃校正的颜色质量图，我们将完整的样品分为红色和蓝色星系的种群，并考虑了恒星质量与年龄之间的依赖关系。在整个宇宙时间里，红色序列星系比蓝色云星系更老，更大。在红移范围内选择的星系的完整子样本$ 0.05 \ le z \ le0.015 $，带有<$ \ mathrm {log} m \ mathrm {>} _ \ mathrm {[m_ \ odot]} $ 8.3显示了$ zfrd sim proved $ sim process，$ s \ sims crounp n of sim proved 3显示了$ sford c的增加，
We present the gMOSS (Galaxies of Medium-band One-meter Schmidt telescope Survey) catalog of $\sim$ 19,000 galaxies in 20 filters (4 broadband SDSS and 16 medium-band filters). We observed 2.386 $\mathrm{deg^2}$ on the central part of the HS47.5-22 field with the 1-m Schmidt telescope of the Byurakan Astrophysical Observatory. The gMOSS is a complete flux-limited sample of galaxies with a threshold magnitude of $r$ SDSS $\le$ 22.5 AB. From photometric measurements with 16 medium-band filters and $u$ SDSS, we get spectral energy distributions for each object in the field, which are used for further analysis. Galaxy classification and photometric redshift estimation based on spectral template matching with ZEBRA software. The obtained redshift accuracy is $σ_\mathrm{NMAD} < 0.0043$. Using the SED-fitting CIGALE code, we obtained the main properties of the stellar population of galaxies, such as rest-frame $(u - r)_{\mathrm{res}}$ colour, stellar mass, extinction, and mass-weighted age with a precision of $0.16 \pm 0.07$ mag, $0.14 \pm 0.04$ dex, $0.27 \pm 0.1$ mag, and $0.08 \pm 0.04$ dex, respectively. Using a dust-corrected colour-mass diagram, we divided the full sample into populations of red and blue galaxies and considered the dependencies between stellar mass and age. Throughout cosmic time, red sequence galaxies remain older and more massive than blue cloud galaxies. The star formation history of a complete subsample of galaxies selected in the redshift range $0.05\le z\le0.015$ with <$\mathrm{log} M \mathrm{>}_\mathrm{[M_\odot]}$>8.3 shows an increase in the SFRD up to $z\sim3$, under the results obtained in earlier studies.
