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== Discussions == === 2015 === ==== 2015.06.23 ==== <i> Li: 星團 IMF </i> PADOVA isochrone test <i> Zhong: M35 Proper Motion </i> PM+Spatial --> high prob. mem. comp. with LAMOST RV. (need phot info. to support the results) ==== 2015.06.18 ==== <i> Lin: 跟中央大學談的合作事項。</i> 1. PTF 在星團中的變星 -- 饒兆聰,楊庭彰 (造父變星、RR Ly) 2. NGC752 科學文章 -- 陳文屏 (蒸發、潮汐的成員,動力自行成員、金屬豐度) 3. 星團中的 Brown Dwarfs -- 陳文屏 ==== 2015.06.08 ==== <i> Lin: 說明用密度找PS1星團,分析距離年齡的方法。 </i> 整理出[[star cluster catalog]]以及[[Be star catalog]]。 <i> Zhong: LAMOST在星團中的觀測還不足。 </i> <i> Li: 學習Chi-square fitting方法。 </i> == Star Clusters == === in LAMOST === === in APGOEE === DR12 APOGEE Total Survey Visits [http://www.sdss.org/] [[ File:APOGEE DR12 sky coverage nvisits galactic color.png|640px]] * [SouthOpenClusters] * [NorthOpenClusters] ==== NOTE ==== * https://trac.sdss.org/wiki/APOGEE2/DR13Path * The current plan for DR13 is to have a public data release of all of APOGEE-1 data with improvements made since DR12 in July 2016. This public release will not have any APOGEE-2 data. * ASPCAP => APOGEE Stellar Parameters and Chemical Abundances Pipeline === in Pan-STARRS === === in 2MASS === === in Kepler === == Catalogs == === open clusters === === globular clusters === === variable stars === Star cluster sample from (186) Dias et al. 2002[http://vizier.china-vo.org/viz-bin/VizieR-3?-source=B/ocl&-out.max=20&-out.add=_r&-out.add=_RAJ,_DEJ&-sort=_r] and (320) Kharchenko et al. 2013. [http://vizier.china-vo.org/viz-bin/VizieR?-source=J/A+A/558/A53&-to=3] with age > 10^9 years and 0 < Dec < 80 deg. === Be stars === ==== APOGEE1&2 ==== https://trac.sdss.org/wiki/APOGEE2/BeStars ==== NGC 6830 ==== REPORTING OF NEWLY DISCOVERED BE STARS IN THE OPEN CLUSTER NGC6830 (in prep.) ABSTRACT We report 10 newly discovered Be stars in the open cluster NGC6830 with the Hα imaging photometry of the Palomar Transient Factory Survey. Stellar membership of the candidates was verified with photometric and kinematic memberships using 2MASS data and proper motions. The spectroscopic observations were carried out for two objects by the new spectrograph SED-Machine that is mounted on the Palomar 60 inch Telescope. Our preliminary results of the SED-Machine shows strong Hα emission lines, which are further confirmed by the Hiyoyu spectrograph of Lulin One-meter Telescope. Most of the Be stars (9/11) are located in the outer region of the cluster, suggesting gravitational disruption over time could result in this spatial distribution. ==== NGC 663 ==== SEARCHING FOR Be STARS IN THE OPEN CLUSTER NGC 663[http://adsabs.harvard.edu/abs/2015AJ....149...43Y] ABSTRACT We present Be star candidates in the open cluster NGC663, identified by Hα imaging photometry with the Palomar Transient Factory Survey, as a pilot program to investigate how the Be star phenomena, the emission spectra, extended circumstellar envelopes, and fast rotation, correlate with massive stellar evolution. Stellar membership of the candidates was verified by 2MASS magnitudes and colors and by proper motions (PMs). We discover four new Be stars and exclude one known Be star from being a member due to its inconsistent PMs. The fraction of Be stars to member stars [N(Be)/N(members)] in NGC663 is 3.5%. The spectral type of the 34 Be stars in NGC663 shows bimodal peaks at B0–B2 and B5–B7, which is consistent with the statistics in most star clusters. Additionally, we also discover 23 emission-line stars of different types, including non-member Be stars, dwarfs, and giants. === Brown dwarfs === [[Candidates in the LAMOST by 王有芬]] == bookmarks == Local Group Astrostatistics Conference http://dept.astro.lsa.umich.edu/lgastrostatistics/ [[Category:Internal]]
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