The Dwarf Galaxy Population at $z\sim 0.7$: A Catalog of Emission Lines and Redshifts from Deep Keck Observations
John Pharo, Yicheng Guo, Guillermo Barro Calvo, Timothy Carleton, S. M. Faber, Puragra Guhathakurta, Susan A. Kassin, David C. Koo, Jack Lonergan, Teja Teppala,… 展开作者
John Pharo, Yicheng Guo, Guillermo Barro Calvo, Timothy Carleton, S. M. Faber, Puragra Guhathakurta, Susan A. Kassin, David C. Koo, Jack Lonergan, Teja Teppala, Weichen Wang, Hassen M. Yesuf, Fuyan Bian, Romeel Dave, John C. Forbes, Dusan Keres, Pablo Perez-Gonzalez, Alec Martin, A. J. Puleo, Lauryn Williams, Benjamin Winningham
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23 pages, 19 Figures, updated to version accepted by ApJS
We present a catalog of spectroscopically measured redshifts over $0 < z < 2$ and emission line fluxes for 1440 galaxies. The majority ($\sim$65\%) of the galaxies come from the HALO7D survey, with the remainder from the DEEPwinds program. This catalog includes redshifts for 646 dwarf galaxies with $\log(M_{\star}/M_{\odot}) < 9.5$. 810 catalog galaxies did not have previously published spectroscopic redshifts, including 454 dwarf galaxies. HALO7D used the DEIMOS spectrograph on the Keck II telescope to take very deep (up to 32 hours exposure, with a median of $\sim$7 hours) optical spectroscopy in the COSMOS, EGS, GOODS-North, and GOODS-South CANDELS fields, and in some areas outside CANDELS. We compare our redshift results to existing spectroscopic and photometric redshifts in these fields, finding only a 1\% rate of discrepancy with other spectroscopic redshifts. We measure a small increase in median photometric redshift error (from 1.0\% to 1.3\%) and catastrophic outlier rate (from 3.5\% to 8\%) with decreasing stellar mass. We obtained successful redshift fits for 75\% of massive galaxies, and demonstrate a similar 70-75\% successful redshift measurement rate in $8.5 < \log(M_{\star}/M_{\odot}) < 9.5$ galaxies, suggesting similar survey sensitivity in this low-mass range. We describe the redshift, mass, and color-magnitude distributions of the catalog galaxies, finding HALO7D galaxies representative of CANDELS galaxies up to \textit{i}-band magnitudes of 25. The catalogs presented will enable studies of star formation (SF), the mass-metallicity relation, SF-morphology relations, and other properties of the $z\sim0.7$ dwarf galaxy population.
A Catalog of GALEX Ultraviolet Emission from Spectroscopically Confirmed M Dwarfs
我们提出了一个目录的GALEX近紫外（NUV）和远紫外（FUV）测光的Palomar/MSU和SDSS DR 7光谱M矮星目录。该目录包含与577颗光谱确认的M矮星相匹配的NUV测量值和与150颗光谱确认的M矮星相匹配的FUV测量值。利用这些数据，我们发现NUV和FUV光度与Hα发射强烈相关，H α发射是M矮星磁活动的典型指标。我们还研究了在NUV波长下具有不同程度的强线发射的M矮星的分数。我们的研究结果表明，M矮星的NUV发射频率在中间光谱类型达到峰值，至少有30%的年轻M4-M5矮星具有一定的活动水平。对于中间型M矮星，我们表明，NUV的排放量随着距离银河系平面，恒星年龄的代理。我们完整的匹配源目录可在线获得。
The Keck/DEIMOS Stellar Archive: I. Uniform Velocities and Metallicities for 78 Milky Way Dwarf Galaxies and Globular Clusters
Yale University（耶鲁大学）；University of California Observatories, University of California, Santa Cruz（加州大学天文台，加州大学圣克鲁兹分校）；Kavli Institute for the Physics and Mathematics of the Universe（卡弗里宇宙物理与数学研究所）；Division of Science, National Astronomical Observatory of Japan（日本国立天文台科学部）；Max-Planck-Institut für Astronomie（马克斯·普朗克天体物理学研究所）；University of California, Santa Barbara（加州大学圣塔芭芭拉分校）
The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies-VIII. A Census of Long-Period Variable Stars across the Andromeda Dwarf Satellite System
Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences（孔科利天文台，HUN-REN 地球与天文学研究中心）；School of Astronomy, Institute for Research in Fundamental Sciences (IPM)（基础科学研究所天文学院）；Lennard-Jones Laboratories, Keele University（基尔大学伦纳德-琼斯实验室）；Department of Physical Sciences, The Open University（开放大学物理科学系）；School of Physics & Astronomy, University of Southampton（南安普顿大学物理与天文学院）；Iranian National Observatory, Institute for Research in Fundamental Sciences (IPM)（伊朗国家天文台，基础科学研究所）
Value-added catalogs of M type stars in LAMOST DR5
在这项工作中，我们提出了新的目录M巨星和M矮星从LAMOST DR 5。总共有39，796颗M巨星和501，152颗M矮星从分类管道中识别出来。模板拟合结果包括M巨星和M矮星，M巨星有7个温度亚型（从M0到M6），M矮星有18个温度亚型（从K7.0到M8.5），M矮星有12个金属丰度亚型（从dMr到usdMp）。我们交叉匹配我们的M型目录与2 MASS和WISE目录，以获得红外星等和颜色。采用由\gaia{} DR 2中的视差导出的距离，M_G vs.（G_bp-G_rp）_0图表明，在我们的M型星样本中还包括早型星和白矮星-M矮星双星，M巨星的污染率约为4.6%，M矮星的污染率约为0.48%.我们发现，CaH光谱指数是一个有效的选择标准的碳星。从M巨星样品中总共鉴定出289颗碳星，并通过LAMOST光谱得到进一步证实。
The POKEMON Speckle Survey of Nearby M dwarfs. IV. Distance-Limited Catalog (POKEMON-DLC)
California Institute of Technology（加州理工学院）；Northern Arizona University（北亚利桑那大学）；NSF National Optical-Infrared Astronomy Research Laboratory（美国国家光学红外天文研究实验室）；Bay Area Environmental Research Institute（湾区环境研究所）；NASA Ames Research Center（NASA艾姆斯研究中心）；Lowell Observatory（洛厄尔天文台）；Carnegie Science（卡内基科学）
