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Strong lensing considerations for the LSST observing strategy

(2018)

Authors:

Aprajita Verma, T Collett, GP Smith

Abstract:

Strong gravitational lensing enables a wide range of science: probing cosmography; testing dark matter models; understanding galaxy evolution; and magnifying the faint, small and distant Universe. However to date exploiting strong lensing as a tool for these numerous cosmological and astrophysical applications has been severely hampered by limited sample sized. LSST will drive studies of strongly lensed galaxies, galaxy groups and galaxy clusters into the statistical age. Time variable lensing events, e.g. measuring cosmological time delays from strongly lensed supernovae and quasars, place the strongest constraints on LSST's observing strategy and have been considered in the DESC observing strategy white papers. Here we focus on aspects of `static' lens discovery that will be affected by the observing strategy. In summary, we advocate (1) ensuring comparable (sub-arcsecond) seeing in the g-band as in r and i to facilitate discovery of gravitational lenses, and (2) initially surveying the entire observable extragalactic sky as rapidly as possible to enable early science spanning a broad range of static and transient interests.

Doing Good Online: The Changing Relationships Between Motivations, Activity, and Retention Among Online Volunteers

Nonprofit and Voluntary Sector Quarterly SAGE Publications 47:5 (2018) 1031-1056

Authors:

Joe Cox, Eun Young Oh, Brooke Simmons, Gary Graham, Anita Greenhill, Chris Lintott, Karen Masters, Jamie Woodcock

Resolving Star Formation on Sub-Kiloparsec Scales in the High-Redshift Galaxy SDP.11 Using Gravitational Lensing

ArXiv 1809.0963 (2018)

Authors:

C Lamarche, A Verma, A Vishwas, GJ Stacey, D Brisbin, C Ferkinhoff, T Nikola, SJU Higdon, J Higdon, M Tecza

JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies: I. Survey overview and first results

(2018)

Authors:

Amelie Saintonge, Christine D Wilson, Ting Xiao, Lihwai Lin, Ho Seong Hwang, Tomoka Tosaki, Martin Bureau, Phillip J Cigan, Christopher JR Clark, David L Clements, Ilse De Looze, Thavisha Dharmawardena, Yang Gao, Walter K Gear, Joshua Greenslade, Isabella Lamperti, Jong Chul Lee, Cheng Li, Michal J Michalowski, Angus Mok, Hsi-An Pan, Anne E Sansom, Mark Sargent, Matthew WL Smith, Thomas Williams, Chentao Yang, Ming Zhu, Gioacchino Accurso, Pauline Barmby, Nathan Bourne, Elias Brinks, Toby Brown, Aeree Chung, Eun Jung Chung, Anna Cibinel, Kristen Coppin, Jonathan Davies, Timothy A Davis, Steve Eales, Lapo Fanciullo, Taotao Fang, Yu Gao, David HW Glass, Haley L Gomez, Thomas Greve, Jinhua He, Luis C Ho, Feng Huang, Hyunjin Jeong, Xuejian Jiang, Qian Jiao, Francisca Kemper, Ji Hoon Kim, Minjin Kim, Taehyun Kim, Jongwan Ko, Xu Kong, Kevin Lacaille, Cedric G Lacey, Bumhyun Lee, Joon Hyeop Lee, Wing-Kit Lee, Karen Masters, Se-Heon Oh, Padelis Papadopoulos, Changbom Park, Sung-Joon Park, Harriet Parsons, Kate Rowlands, Peter Scicluna, Jillian M Scudder, Ramya Sethuram, Stephen Serjeant, Yali Shao, Yun-Kyeong Sheen, Yong Shi, Hyunjin Shim, Connor MA Smith, Kristine Spekkens, An-Li Tsai, Sheona Urquhart, Aprajita Verma, Giulio Violino, Serena Viti, David Wake, Junfeng Wang, Jan Wouterloot, Yujin Yang, Kijeong Yim, Fangting Yuan, Zheng Zheng

JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies - I. Survey overview and first results

Monthly Notices of the Royal Astronomical Society 91̽»¨ University Press 481:3 (2018) 3497-3519

Authors:

A Saintonge, CD Wilson, T Xiao, L Lin, HS Hwang, T Tosaki, Martin Bureau, PJ Cigan, CJR Clark, DL Clements, ID Looze, T Dharmawardena, Y Gao, WK Gear, J Greenslade, I Lamperti, JC Lee, C Li, MJ Michałowski, A Mok, HA Pan, AE Sansom, M Sargent, MW Matthew, T Williams, C Yang, M Zhu, G Accurso, P Barmby, E Brinks, N Bourne, T Brown, A Chung, EJ Chung, A Cibinel, K Coppin, J Davies, TA Davis, S Eales, L Fanciullo, T Fang, Y Gao, DHW Glass, HL Gomez, T Greve, J He, LC Ho, F Huang, H Jeong, X Jiang

Abstract:

JINGLE is a new JCMT legacy survey designed to systematically study the cold interstellar medium of galaxies in the local Universe. As part of the survey we perform 850 µm continuum measurements with SCUBA-2 for a representative sample of 193 Herschel-selected galaxies with M* > 109 M⊙, as well as integrated CO(2–1) line fluxes with RxA3m for a subset of 90 of these galaxies. The sample is selected from fields covered by the Herschel-ATLAS survey that are also targeted by the MaNGA optical integral-field spectroscopic survey. The new JCMT observations combined with the multiwavelength ancillary data will allow for the robust characterization of the properties of dust in the nearby Universe, and the benchmarking of scaling relations between dust, gas, and global galaxy properties. In this paper we give an overview of the survey objectives and details about the sample selection and JCMT observations, present a consistent 30-band UV-to-FIR photometric catalogue with derived properties, and introduce the JINGLE Main Data Release. Science highlights include the non-linearity of the relation between 850 µm luminosity and CO line luminosity (log LCO(2–1) =  1.372 logL850–1.376), and the serendipitous discovery of candidate z > 6 galaxies.