https://astro.kias.re.kr/KSG/index.php?action=history&feed=atom&title=Ancillary_science_%ED%94%84%EB%A1%9C%ED%8F%AC%EC%9E%98_in_AS2 2026-05-21T02:14:01Z 이 문서의 편집 역사 MediaWiki 1.26.3 https://astro.kias.re.kr/KSG/index.php?title=Ancillary_science_%ED%94%84%EB%A1%9C%ED%8F%AC%EC%9E%98_in_AS2&diff=34&oldid=prev 2013-04-03T04:31:32Z

<p>새 문서: 현재 Sloan 팀에서는 SDSS가 끝나는 2008년 이후에 수행할 후속 탐사를 기획하고 있습니다. 주 서베이 이외에 수행할 서베이 제안을 받고 있습...</p> <p><b>새 문서</b></p><div>현재 Sloan 팀에서는 SDSS가 끝나는 2008년 이후에 수행할<br /> 후속 탐사를 기획하고 있습니다. 주 서베이 이외에 수행할 <br /> 서베이 제안을 받고 있습니다. 첨부 파일은 제가 보낸 프로포잘입니다.<br /> 아래는 스트라우스의 공지 편지입니다.<br /> <br /> ----<br /> <br /> Hello all,<br /> <br /> I wanted to summarize the response I have received to my call for<br /> ideas for ancillary targetting to the core AS2 science programs. Most<br /> of these ideas would be auxiliary targets to the BOSS program, and<br /> there may be fibers for up to 30 targets per square degree. The<br /> detailed program will be decided by the AS2 management committee. For<br /> them to make their decision, we need documents describing the<br /> following for each category of auxiliary target: <br /> <br /> -A detailed scientific case: why this project is scientifically<br /> compelling. One to two pages would be appropriate here. <br /> <br /> -Target selection details. How are the targets selected? Can<br /> the targets be selected right now, using existing data? <br /> <br /> -The density of targets on the sky. Can the sample be<br /> sparse-sampled? <br /> <br /> -Sky coverage of targets. Is it important that the selection be<br /> uniform over the whole survey footprint? Does it need to be<br /> tiled? Are there specific regions of the sky in which one needs<br /> to target? <br /> <br /> We need these quite soon: as was discussed at the SDSS collaboration<br /> meeting last week, we need to finalize a number of aspects of the AS2<br /> survey, including the targetting of ancillary targets, in the next<br /> month. So we would like the documents (posted to<br /> as2-general@astro.princeton.edu) by two weeks from today, i.e., <br /> April 16. One restriction to keep in mind is that we need to minimize<br /> the effect of cross-talk on the faint (g=22) targets in BOSS; in<br /> practice, this suggests that we can't target objects with fiber<br /> magnitude brighter than r~17. <br /> <br /> Here are the ideas I have heard thus far for ancillary programs:<br /> <br /> -Guinevere Kauffmann and Tim Heckman are interested in targetting<br /> luminous blue galaxies at all redshifts, to understand the<br /> evolution of luminous galaxies from z=0.7 to today. <br /> <br /> -Paco Prada is interested in targetting bright galaxies, especially<br /> those not properly targetted as part of the main SDSS sample due to<br /> problems with the photometric pipeline. (This program may be<br /> affected by the bright limit on targets). <br /> <br /> -There is interest in various SEGUE-related programs, such as<br /> spectroscopically targetting some of the high-density lumps in the<br /> Milky Way, or targetting a sparse sample of BHB stars uniformly<br /> across the survey area. The SEGUE team, and David Hogg, are<br /> interested in pursuing this. <br /> <br /> -Bob Nichol, Daniel Thomas and Claudia Maraston are interested in<br /> high S/N spectroscopy of nearby ellipticals for detailed star<br /> formation history/metallicity studies. <br /> <br /> -Xiaohui Fan is interested in various high-redshift quasar studies,<br /> including: <br /> -A complete i-band dropout survey<br /> -Going fainter in z&gt;4 quasars than the main SDSS survey<br /> -Targetting quasar candidates that were missed due to fiber<br /> collisions, to study the small-scale clustering of quasars<br /> <br /> -Changbom Park is interested in targetting satellite companions of<br /> low-redshift galaxies to study halo dynamics and the properties of<br /> low-luminosity galaxies. <br /> <br /> It is not too late to add to this list!<br /> <br /> -Michael Strauss</div>

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