Bundy, Kevin and Bershady, Matthew A. and Law, David R. and Yan, Renbin and Drory, Niv and MacDonald, Nicholas and Wake, David A. and Cherinka, Brian and Sánchez-Gallego, José R. and Weijmans, Anne-Marie and Thomas, Daniel and Tremonti, Christy and Masters, Karen and Coccato, Lodovico and Diamond-Stanic, Aleksandar M. and Aragón-Salamanca, Alfonso and Avila-Reese, Vladimir and Badenes, Carles and Falcón-Barroso, Jésus and Belfiore, Francesco and Bizyaev, Dmitry and Blanc, Guillermo A. and Bland-Hawthorn, Joss and Blanton, Michael R. and Brownstein, Joel R. and Byler, Nell and Cappellari, Michele and Conroy, Charlie and Dutton, Aaron A. and Emsellem, Eric and Etherington, James and Frinchaboy, Peter M. and Fu, Hai and Gunn, James E. and Harding, Paul and Johnston, Evelyn J. and Kauffmann, Guinevere and Kinemuchi, Karen and Klaene, Mark A. and Knapen, Johan H. and Leauthaud, Alexie and Li, Cheng and Lin, Lihwai and Maiolino, Roberto and Malanushenko, Viktor and Malanushenko, Elena and Mao, Shude and Maraston, Claudia and McDermid, Richard M. and Merrifield, Michael R. and Nichol, Robert C. and Oravetz, Daniel and Pan, Kaike and Parejko, John K. and Sanchez, Sebastian F. and Schlegel, David and Simmons, Audrey and Steele, Oliver and Steinmetz, Matthias and Thanjavur, Karun and Thompson, Benjamin A. and Tinker, Jeremy L. and van den Bosch, Remco C. E. and Westfall, Kyle B. and Wilkinson, David and Wright, Shelley and Xiao, Ting and Zhang, Kai
Overview of the SDSS-IV MaNGA survey: mapping nearby galaxies at Apache Point Observatory.
Astrophysical Journal, 798
We present an overview of a new integral field spectroscopic survey called MaNGA (Mapping Nearby Galaxies at Apache Point Observatory), one of three core programs in the fourth-generation Sloan Digital Sky Survey (SDSS-IV) that began on 2014 July 1. MaNGA will investigate the internal kinematic structure and composition of gas and stars in an unprecedented sample of 10,000 nearby galaxies. We summarize essential characteristics of the instrument and survey design in the context of MaNGA's key science goals and present prototype observations to demonstrate MaNGA's scientific potential. MaNGA employs dithered observations with 17 fiber-bundle integral field units that vary in diameter from 12'' (19 fibers) to 32'' (127 fibers). Two dual-channel spectrographs provide simultaneous wavelength coverage over 3600-10300 Å at R ~ 2000. With a typical integration time of 3 hr, MaNGA reaches a target r-band signal-to-noise ratio of 4-8 (Å–1 per 2'' fiber) at 23 AB mag arcsec–2, which is typical for the outskirts of MaNGA galaxies. Targets are selected with M * 109 M ☉ using SDSS-I redshifts and i-band luminosity to achieve uniform radial coverage in terms of the effective radius, an approximately flat distribution in stellar mass, and a sample spanning a wide range of environments. Analysis of our prototype observations demonstrates MaNGA's ability to probe gas ionization, shed light on recent star formation and quenching, enable dynamical modeling, decompose constituent components, and map the composition of stellar populations. MaNGA's spatially resolved spectra will enable an unprecedented study of the astrophysics of nearby galaxies in the coming 6 yr.
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