The SDSS-IV MaNGA Sample: Design, Optimization, and Usage Considerations

被引：426

作者：

Wak, David A. ^{[1
,2
,3
]}

Bundy, Kevin ^{[4
,5
]}

Diamond-Stanic, Aleksandar M. ^{[2
,6
]}

Yan, Renbin ^{[7
]}

Blanton, Michael R. ^{[8
]}

Bershady, Matthew A. ^{[2
]}

Sanchez-Gallego, Jose R. ^{[9
]}

Drory, Niv ^{[10
]}

Jones, Amy ^{[11
]}

Kauffmann, Guinevere ^{[11
]}

Law, David R. ^{[12
]}

Li, Cheng ^{[13
,14
,15
]}

MacDonald, Nicholas ^{[9
]}

Masters, Karen ^{[16
]}

Thomas, Daniel ^{[16
]}

Tinker, Jeremy ^{[8
]}

Weijmans, Anne-Marie ^{[17
]}

Brownstein, Joel R. ^{[18
]}

机构：

[1] Open Univ, Sch Phys Sci, Milton Keynes MK7 6AA, Bucks, England

[2] Univ Wisconsin, Astron Dept, Madison, WI 53706 USA

[3] Univ North Carolina Asheville, Dept Phys, One Univ Hts, Asheville, NC 28804 USA

[4] UC Santa Cruz, Dept Astron & Astrophys, MS UCO LICK, 1156 High St, Santa Cruz, CA 95064 USA

[5] Univ Tokyo, Kavli IPMU WPI, UTIAS, Kashiwa, Chiba 2778583, Japan

[6] Bates Coll, Dept Phys & Astron, 44 Campus Ave,Carnegie Sci, Lewiston, ME 04240 USA

[7] Univ Kentucky, Dept Phys & Astron, 505 Rose St, Lexington, KY 40506 USA

[8] NYU, Dept Phys, Ctr Cosmol & Particle Phys, 4 Washington Pl, New York, NY 10003 USA

[9] Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA

[10] Univ Texas Austin, McDonald Observ, 1 Univ, Austin, TX 78712 USA

[11] Max Planck Inst Astrophys, D-85741 Garching, Germany

[12] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[13] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[14] Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China

[15] Shanghai Astron Observ, Nandan Rd 80, Shanghai 200030, Peoples R China

[16] Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth, Hants, England

[17] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[18] Univ Utah, Dept Phys & Astron, 115 S 1400 E, Salt Lake City, UT 84112 USA

来源：

ASTRONOMICAL JOURNAL | 2017年 / 154卷 / 03期

关键词：

galaxies: evolution; galaxies: general; galaxies: statistics; surveys; DIGITAL SKY SURVEY; TARGET SELECTION; CATALOG; STRATEGY;

D O I：

10.3847/1538-3881/aa7ecc

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe the sample design for the SDSS-IV MaNGA survey and present the final properties of the main samples along with important considerations for using these samples for science. Our target selection criteria were developed while simultaneously optimizing the size distribution of the MaNGA integral field units (IFUs), the IFU allocation strategy, and the target density to produce a survey defined in terms of maximizing signal-to-noise ratio, spatial resolution, and sample size. Our selection strategy makes use of redshift limits that only depend on i-band absolute magnitude (M-i), or, for a small subset of our sample, M-i and color (NUV - i). Such a strategy ensures that all galaxies span the same range in angular size irrespective of luminosity and are therefore covered evenly by the adopted range of IFU sizes. We define three samples: the Primary and Secondary samples are selected to have a flat number density with respect to M-i and are targeted to have spectroscopic coverage to 1.5 and 2.5 effective radii (R-e), respectively. The Color-Enhanced supplement increases the number of galaxies in the low-density regions of color-magnitude space by extending the redshift limits of the Primary sample in the appropriate color bins. The samples cover the stellar mass range 5 x 10(8) <= M-* 3 x 10(11) M-circle dot h(-2) and are sampled at median physical resolutions of 1.37 and 2.5 kpc for the Primary and Secondary samples, respectively. We provide weights that will statistically correct for our luminosity and color-dependent selection function and IFU allocation strategy, thus correcting the observed sample to a volume-limited sample.

引用

页数：26

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