The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment

Abolfathi, Bela; Aguado, David S.; Aguilar, Gabriela; Prieto, C. Allende; Almeida, Andrés; Ananna, Tonima Tasnim; Anders, F.; Anderson, Scott F.; Andrews, Brett H.; Anguiano, Borja; Aragón-Salamanca, Alfonso; Argudo-Fernández, M.; Armengaud, E.; Ata, M.; Aubourg, É.; Avila-Reese, Vladimir; Badenes, Carles; Bailey, S.; Balland, C.; Barger, Kat; Barrera-Ballesteros, Jorge K.; Bartosz, Curtis; Bastien, Fabienne A.; Bates, Dominic; Baumgarten, Falk; Bautista, Julian; Beaton, Rachael L.; Beers, Timothy C.; Belfiore, Francesco; Bender, Chad F.; Bernardi, Mariangela; Bershady, Matthew A.; Beutler, Florian; Bird, Jonathan C.; Bizyaev, Dmitry; Blanc, Guillermo A.; Blanton, Michael R.; Blomqvist, Michael; Bolton, A.; Boquien, M.; Borissova, J.; Bovy, Jo; Diaz, Christian Andres Bradna; Brandt, W. N.; Brinkmann, J.; Brownstein, Joel R.; Bundy, Kevin; Burgasser, Adam J.; Burtin, E.; Busca, N. G.; Cañas, Caleb I.; Cano-Díaz, M.; Cappellari, Michele; Carrera, R.; Casey, Andrew R.; Sodi, Bernardo Cervantes; Chen, Yan Ping; Cherinka, Brian; Chiappini, Cristina; Choi, Peter Doohyun; Chojnowski, S. Drew; Chuang, Chia-Hsun; Chung, Haeun; Clerc, N.; Cohen, Roger E.; Comerford, Julia M.; Comparat, Johan; Nascimento, Janaina Correa do; Costa, L. N. da; Cousinou, M. C.; Covey, Kevin R.; Crane, Jeffrey D.; Cruz-González, I.; Cunha, Kátia; Ilha, Gabriele da Silva; Damke, G.; Darling, Jeremy; Davidson, James W.; Dawson, Kyle; Lizaola, Miguel Angel C. de Icaza; Macorra, Axel de la; Torre, S. de la; Lee, Nathan De; Agathe, Victoria de Sainte; Machado, Alice Deconto; Dell’Agli, F.; Delubac, Timothée; Diamond‐Stanic, Aleksandar M.; Donor, John; Downes, Juan José; Drory, Niv; Bourboux, Hélion du Mas des; Duckworth, Christopher; Dwelly, T.; Dyer, Jamie; Ebelke, Garrett; Eigenbrot, Arthur; Eisenstein, Daniel J.; Elsworth, Y.; Emsellem, Éric; Eracleous, Michael; Erfanianfar, G.; Escoffier, S.; Fan, Xiaohui; Alvar, Emma Fernández; Fernández-Trincado, J. G.; Cirolini, Rafael Fernando; Feuillet, Diane; Finoguenov, A.; Fleming, Scott W.; Font-Ribera, Andreu; Freischlad, Gordon; Frinchaboy, Peter M.; Fu, Hai; Chew, Y. Gómez Maqueo; Galbany, L.; Pérez, Ana E. García; Garcia‐Dias, Rafael; García–Hernández, D. A.; Oehmichen, Luis Alberto Garma; Gaulme, P.; Gelfand, Joseph D.; Gil-Marín, Héctor; Gillespie, Bruce; Goddard, Daniel; Hernández, J. I. González; González-Pérez, Violeta; Grabowski, Kathleen; Green, Paul; Grier, C. J.; Gueguen, A.; Guo, Hong; Guy, J.; Hagen, Alex; Hall, Patrick B.; Harding, Paul; Hasselquist, Sten; Hawley, Suzanne L.; Hayes, Christian R.; Hearty, Fred; Hekker, S.; Hernández, Jesús; Toledo, Hector Hernández; Hogg, David W.; Holley‐Bockelmann, Kelly; Holtzman, Jon A.; Hou, Jiamin; Hsieh, Bau-Ching; Hunt, Jason A. S.; Hutchinson, Timothy A.; Hwang, Ho Seong; Angel, Camilo Eduardo Jimenez; Johnson, Jennifer A.; Jones, Amy; Jönsson, Henrik; Jullo, Eric; Khan, Fahim Sakil; Kinemuchi, Karen; Kirkby, D.; Kirkpatrick, C. C.; Kitaura, Francisco-Shu; Knapp, G. R.; Kneib, Jean-Paul; Kollmeier, Juna A.; Lacerna, Iván; Lane, Richard R.; Lang, Dustin; Law, David R.; Goff, Jean-Marc Le; Lee, Young-Bae; Li, Hongyu; Li, Cheng; Lian, Jianhui; Yu, Li; Lima, M.; Lin, Lihwai; Long, D.; Lucatello, S.; Lundgren, Britt; Mackereth, J. Ted; MacLeod, Chelsea L.; Mahadevan, Suvrath; Maia, M. A. G.; Majewski, Steven R.; Manchado, A.; Maraston, Claudia; Vivek, M.; Marques-Chaves, R.; Masseron, T.; Masters, Karen L.; McDermid, Richard M.; McGreer, Ian D.; Melendez, Matthew; Meneses-Goytia, S.; Merloni, A.; Merrifield, M. R.; Mészáros, Szabolcs; Meza, Andrés; Minchev, Ivan; Minniti, D.; Mueller, Eva-Maria; Müller–Sánchez, F.; Muna, Demitri; Muñoz, Ricardo R.; Myers, Adam D.; Nair, Preethi; Nandra, K.; Ness, Melissa; Newman, Jeffrey A.; Nichol, R. C.; Nidever, David L.; Nitschelm, Christian; Noterdaeme, P.; O’Connell, Julia; Oelkers, Ryan J.; Oravetz, Audrey; Oravetz, Daniel; Aquino-Ortíz, E.; Osorio, Yeisson; Pace, Zachary J.; Padilla, Nelson; Palanque-Delabrouille, N.; Palicio, P. A.; Pan, Hsi-An; Pan, Kaike; Parikh, Taniya; Pâris, Isabelle; Park, Changbom; Peirani, Sébastien; Pellejero-Ibáñez, Marcos; Penny, Samantha J.; Percival, Will J.; Pérez-Fournón, I.; Petitjean, P.; Pieri, Matthew M.; Pinsonneault, Marc H.; Pisani, Alice; Prada, Francisco; Prakash, Abhishek; Queiroz, Anna Bárbara de Andrade; Raddick, M. Jordan; Raichoor, Anand; Rembold, Sandro Barboza; Richstein, Hannah; Riffel, Rogemar A.; Riffel, Rogério; Rix, Hans─Walter; Robin, A. C.; Torres, Sergio Rodríguez; Román-Zúñiga, C.; Ross, Ashley J.; Rossi, Graziano; Ruan, John J.; Ruggeri, Rossana; Ruiz, J. M. Jimenez; Salvato, M.; Sánchez, Ariel G.; Sanchez, Sebastian Francisco Sanchez; Alméida, J. Sánchez; Sánchez-Gallego, José R.; Rojas, Felipe; Santiago, B.; Schiavon, Ricardo P.; Schimoia, J. S.; Schlafly, Edward F.; Schlegel, David J.; Schneider, Donald P.; Schuster, W. J.; Schwope, A. D.; Seo, Hee-Jong; Serenelli, Aldo; Shen, Shiyin; Shen, Yue; Shetrone, Matthew; Shull, Michael; Aguirre, V. Silva; Simon, Joshua D.; Skrutskie, M. F.; Slosar, Anže; Smethurst, Rebecca; Smith, Verne V.; Sobeck, Jennifer; Somers, Garrett; Souter, B. J.; Souto, Diogo; Spindler, Ashley; Stark, David V.; Stassun, Keivan G.; Steinmetz, Matthias; Stello, Dennis; Storchi‐Bergmann, Thaisa; Streblyanska, A.; Stringfellow, Guy S.; Suárez, Genaro; Sun, Jing; Szigeti, László; Taghizadeh-Popp, Manuchehr; Talbot, Michael S.; Tang, Baitian; Tao, C.; Tayar, Jamie; Tembe, Mita; Teske, Johanna; Thakar, Aniruddha R.; Thomas, Daniel; Tissera, Patricia B.; Tojeiro, Rita; Tremonti, Christy; Troup, Nicholas; Urry, C. Megan; Valenzuela, O.; Bosch, Remco C. E. van den; Vargas-González, Jaime; Vargas-Magaña, Mariana; Vázquez, J. Alberto; Villanova, S.; Vogt, Nicole P.; Wake, David A.; Wang, Yuting; Weaver, B. A.; Weijmans, Anne-Marie; Weinberg, David H.; Westfall, Kyle B.; Whelan, David G.; Wilcots, Eric M.; Wild, Vivienne; Williams, Rob A.; Wilson, John C.; Wood‐Vasey, W. M.; Wylezalek, Dominika; Xiao, Ting; Yan, Renbin; Yang, Meng; Ybarra, Jason E.; Yèche, Ch; Zakamska, Nadia L.; Zamora, Olga; Zarrouk, Pauline; Zasowski, Gail; Zhang, K.; Zhao, Cheng; Zhao, Gong-Bo; Zheng, Zheng; Zhang, Zhimin; Zhu, Guangtun; Zinn, Joel; Zou, Hu

doi:10.3847/1538-4365/aa9e8a

Cited by 966 publications

(486 citation statements)

References 106 publications

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“…The BOSS CMASS galaxies represent about one-third of the full sample used in this work. These data are found in the SDSS Data Release 14 18 (Albofathi et al 2018). …”

Section: Datamentioning

confidence: 67%

The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample

Bautista

Vargas-Magaña

Dawson

et al. 2018

ApJ

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193

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The extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 sample includes 80,118 luminous red galaxies (LRGs). By combining these galaxies with the high-redshift tail of the BOSS galaxy sample, we form a sample of LRGs at an effective redshift z=0.72, covering an effective volume of 0.9 Gpc 3 . We account for spurious fluctuations caused by targeting and by redshift failures, which were validated on a set of mock catalogs. This analysis is sufficient to provide a 2.5% measurement of spherically averaged baryon acoustic oscillations (BAO), D z rr 0.72 2377 61,fid = = -+ ( ) ( )Mpc, at 2.8σ of significance. Together with the recent quasar-based BAO measurement at z=1.5 and forthcoming emission line galaxy-based measurements, this measurement demonstrates that eBOSS is fulfilling its remit of extending the range of redshifts covered by such measurements, laying the groundwork for forthcoming surveys such as the Dark Energy Spectroscopic Survey and Euclid.

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“…The BOSS CMASS galaxies represent about one-third of the full sample used in this work. These data are found in the SDSS Data Release 14 18 (Albofathi et al 2018). …”

Section: Datamentioning

confidence: 67%

The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample

Bautista

Vargas-Magaña

Dawson

et al. 2018

ApJ

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193

158

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“…This version is similar to v2_1_2 released in 2017 July as SDSS DR14 (Abolfathi et al 2018), but incorporates a number of custom modifications made specifically for the Deep Coma program. The baseline DRP first removes detector overscan regions and quadrant-dependent bias and extracts the spectrum of each fiber using an optimal profile-fitting technique.…”

Section: Data Reductionmentioning

confidence: 99%

Low Metallicities and Old Ages for Three Ultra-diffuse Galaxies in the Coma Cluster

Conroy

Law

et al. 2018

ApJ

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A large population of ultra-diffuse galaxies (UDGs) was recently discovered in the Coma cluster. Here we present optical spectra of three such UDGs, DF7, DF44, and DF17, which have central surface brightnesses of μ g ≈24.4-25.1 mag arcsec −2 . The spectra were acquired as part of an ancillary program within the SDSS-IV MaNGA Survey. We stacked 19 fibers in the central regions from larger integral field units (IFUs) per source. With over 13.5 hr of on-source integration, we achieved a mean signal-to-noise ratio in the optical of 9.5 Å −1 , 7.9 Å −1 , and 5.0 Å −1 , respectively, for DF7, DF44, and DF17. Stellar population models applied to these spectra enable measurements of recession velocities, ages, and metallicities. respectively. Their stellar masses are (3-6)×10 8 M e . The UDGs in our sample are as old or older than galaxies at similar stellar mass or velocity dispersion (only DF 44 has an independently measured dispersion). They all follow the well-established stellar mass-stellar metallicity relation, while DF44 lies below the velocity dispersionmetallicity relation. These results, combined with the fact that UDGs are unusually large for their stellar masses, suggest that stellar mass plays a more important role in setting stellar population properties for these galaxies than either size or surface brightness.

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“…APOGEE is a high-resolution (R ∼ 22,500) spectroscopic survey of Galactic stellar populations with H-band sensitivity that is well suited to the exploration of highly extinguished low-latitude targets, such as the TriAnd overdensity and the outer disk. Selecting from the ∼263,000 stars observed with the SDSS 2.5 m telescope (Gunn et al 2006) and analyzed by APOGEE in the 14th Data Release (DR14; Abolfathi et al 2018) of the Sloan Digital Sky Survey-IV (SDSS-IV; Blanton et al 2017), we use the abundances of six APOGEE-measured elements to compare TriAnd red giants to outer disk and Sgr dSph stars, and demonstrate that the TriAnd chemistry is more consistent with an extrapolation of outer MW disk chemical gradients than the abundance patterns of a prototypical dwarf galaxy of similar enrichment.…”

Section: Introductionmentioning

confidence: 99%

Disk-like Chemistry of the Triangulum-Andromeda Overdensity as Seen by APOGEE

Hayes

Majewski

Hasselquist

et al. 2018

ApJL

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The nature of the Triangulum-Andromeda (TriAnd) system has been debated since the discovery of this distant, low-latitude Milky Way (MW) overdensity more than a decade ago. Explanations for its origin are either as a halo substructure from the disruption of a dwarf galaxy, or a distant extension of the Galactic disk. We test these hypotheses using the chemical abundances of a dozen TriAnd members from the Sloan Digital Sky Survey-IV's (SDSS-IV's) 14th Data Release (DR14) of Apache Point Observatory Galactic Evolution Experiment (APOGEE) data to compare to APOGEE abundances of stars with similar metallicity from both the Sagittarius (Sgr) dSph and the outer MW disk. We find that TriAnd stars are chemically distinct from Sgr across a variety of elements, (C+N), Mg, K, Ca, Mn, and Ni, with a separation in [X/Fe] of about 0.1 to 0.4 dex depending on the element. Instead, the TriAnd stars, with a median metallicity of about −0.8, exhibit chemical abundance ratios similar to those of the lowest metallicity ([Fe/H] ∼ −0.7) stars in the outer Galactic disk, and are consistent with expectations of extrapolated chemical gradients in the outer disk of the MW. These results suggest that TriAnd is associated with the MW disk, and, therefore, that the disk extends to this overdensity-i.e., past a Galactocentric radius of 24 kpc -albeit vertically perturbed about 7 kpc below the nominal disk midplane in this region of the Galaxy.

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The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment

Abstract: The fourth generation of the Sloan

Cited by 966 publications

References 106 publications

The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample

The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample

Low Metallicities and Old Ages for Three Ultra-diffuse Galaxies in the Coma Cluster

Disk-like Chemistry of the Triangulum-Andromeda Overdensity as Seen by APOGEE

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