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1. The Apache Point Observatory Galactic Evolution Experiment (APOGEE) Spectrographs

Author

Wilson, J. C., Hearty, F. R., Skrutskie, M. F., Majewski, S. R., Holtzman, J. A., Eisenstein, D., Gunn, J., Blank, B., Henderson, C., Smee, S., Nelson, M., Nidever, D., Arns, J., Barkhouser, R., Barr, J., Beland, S., Bershady, M. A., Blanton, M. R., Brunner, S., Burton, A., Carey, L., Carr, M., Colque, J. P., Crane, J., Damke, G. J., Davidson Jr., J. W., Dean, J., Di Mille, F., Don, K. W., Ebelke, G., Evans, M., Fitzgerald, G., Gillespie, B., Hall, M., Harding, A., Harding, P., Hammond, R., Hancock, D., Harrison, C., Hope, S., Horne, T., Karakla, J., Lam, C., Leger, F., MacDonald, N., Maseman, P., Matsunari, J., Melton, S., Mitcheltree, T., O'Brien, T., O'Connell, R. W., Patten, A., Richardson, W., Rieke, G., Rieke, M., Roman-Lopes, A., Schiavon, R. P., Sobeck, J. S., Stolberg, T., Stoll, R., Tembe, M., Trujillo, J. D., Uomoto, A., Vernieri, M., Walker, E., Weinberg, D. H., Young, E., Anthony-Brumfield, B., Bizyaev, D., Breslauer, B., De Lee, N., Downey, J., Halverson, S., Huehnerhoff, J., Klaene, M., Leon, E., Long, D., Mahadevan, S., Malanushenko, E., Nguyen, D. C., Owen, R., Sanchez-Gallego, J. R., Sayres, C., Shane, N., Shectman, S. A., Shetrone, M., Skinner, D., Stauffer, F., and Zhao, B.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We describe the design and performance of the near-infrared (1.51--1.70 micron), fiber-fed, multi-object (300 fibers), high resolution (R = lambda/delta lambda ~ 22,500) spectrograph built for the Apache Point Observatory Galactic Evolution Experiment (APOGEE). APOGEE is a survey of ~ 10^5 red giant stars that systematically sampled all Milky Way populations (bulge, disk, and halo) to study the Galaxy's chemical and kinematical history. It was part of the Sloan Digital Sky Survey III (SDSS-III) from 2011 -- 2014 using the 2.5 m Sloan Foundation Telescope at Apache Point Observatory, New Mexico. The APOGEE-2 survey is now using the spectrograph as part of SDSS-IV, as well as a second spectrograph, a close copy of the first, operating at the 2.5 m du Pont Telescope at Las Campanas Observatory in Chile. Although several fiber-fed, multi-object, high resolution spectrographs have been built for visual wavelength spectroscopy, the APOGEE spectrograph is one of the first such instruments built for observations in the near-infrared. The instrument's successful development was enabled by several key innovations, including a "gang connector" to allow simultaneous connections of 300 fibers; hermetically sealed feedthroughs to allow fibers to pass through the cryostat wall continuously; the first cryogenically deployed mosaic volume phase holographic grating; and a large refractive camera that includes mono-crystalline silicon and fused silica elements with diameters as large as ~ 400 mm. This paper contains a comprehensive description of all aspects of the instrument including the fiber system, optics and opto-mechanics, detector arrays, mechanics and cryogenics, instrument control, calibration system, optical performance and stability, lessons learned, and design changes for the second instrument., Comment: 81 pages, 67 figures, PASP, accepted

Published
2019
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2. The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra

Author

Ahumada, R, Prieto, CA, Almeida, A, Anders, F, Anderson, SF, Andrews, BH, Anguiano, B, Arcodia, R, Armengaud, E, Aubert, M, Avila, S, Avila-Reese, V, Badenes, C, Balland, C, Barger, K, Barrera-Ballesteros, JK, Basu, S, Bautista, J, Beaton, RL, Beers, TC, Benavides, BIT, Bender, CF, Bernardi, M, Bershady, M, Beutler, F, Bidin, CM, Bird, J, Bizyaev, D, Blanc, GA, Blanton, MR, Boquien, M, Borissova, J, Bovy, J, Brandt, WN, Brinkmann, J, Brownstein, JR, Bundy, K, Bureau, M, Burgasser, A, Burtin, E, Cano-Díaz, M, Capasso, R, Cappellari, M, Carrera, R, Chabanier, S, Chaplin, W, Chapman, M, Cherinka, B, Chiappini, C, Doohyun Choi, P, Chojnowski, SD, Chung, H, Clerc, N, Coffey, D, Comerford, JM, Comparat, J, Da Costa, L, Cousinou, MC, Covey, K, Crane, JD, Cunha, K, Ilha, GDS, Dai, YS, Damsted, SB, Darling, J, Davidson, JW, Davies, R, Dawson, K, De, N, De La Macorra, A, De Lee, N, Queiroz, ABDA, Deconto Machado, A, De La Torre, S, Dell'Agli, F, Du Mas Des Bourboux, H, Diamond-Stanic, AM, Dillon, S, Donor, J, Drory, N, Duckworth, C, Dwelly, T, Ebelke, G, Eftekharzadeh, S, Davis Eigenbrot, A, Elsworth, YP, Eracleous, M, Erfanianfar, G, Escoffier, S, Fan, X, Farr, E, Fernández-Trincado, JG, Feuillet, D, Finoguenov, A, Fofie, P, Fraser-Mckelvie, A, Frinchaboy, PM, Fromenteau, S, Fu, H, and Galbany, L

Subjects
astro-ph.GA, astro-ph.CO, astro-ph.IM, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Astronomy & Astrophysics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

This paper documents the 16th data release (DR16) from the Sloan Digital Sky Surveys (SDSS), the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of data from the Southern Hemisphere survey of the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new data from APOGEE-2 North are also included. DR16 is also notable as the final data release for the main cosmological program of the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), and all raw and reduced spectra from that project are released here. DR16 also includes all the data from the Time Domain Spectroscopic Survey and new data from the SPectroscopic IDentification of ERosita Survey programs, both of which were co-observed on eBOSS plates. DR16 has no new data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey (or the MaNGA Stellar Library "MaStar"). We also preview future SDSS-V operations (due to start in 2020), and summarize plans for the final SDSS-IV data release (DR17).

Published
2020

3. The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA-derived Quantities, Data Visualization Tools, and Stellar Library

Author

Aguado, DS, Ahumada, R, Almeida, A, Anderson, SF, Andrews, BH, Anguiano, B, Ortiz, EA, Aragón-Salamanca, A, Argudo-Fernández, M, Aubert, M, Avila-Reese, V, Badenes, C, Barboza Rembold, S, Barger, K, Barrera-Ballesteros, J, Bates, D, Bautista, J, Beaton, RL, Beers, TC, Belfiore, F, Bernardi, M, Bershady, M, Beutler, F, Bird, J, Bizyaev, D, Blanc, GA, Blanton, MR, Blomqvist, M, Bolton, AS, Boquien, M, Borissova, J, Bovy, J, Nielsen Brandt, W, Brinkmann, J, Brownstein, JR, Bundy, K, Burgasser, A, Byler, N, Cano Diaz, M, Cappellari, M, Carrera, R, Cervantes Sodi, B, Chen, Y, Cherinka, B, Doohyun Choi, P, Chung, H, Coffey, D, Comerford, JM, Comparat, J, Covey, K, Da Silva Ilha, G, Da Costa, L, Sophia Dai, Y, Damke, G, Darling, J, Davies, R, Dawson, K, De Sainte Agathe, V, Deconto Machado, A, Del Moro, A, De Lee, N, Diamond-Stanic, AM, Dominguez Sánchez, H, Donor, J, Drory, N, Du Mas Des Bourboux, H, Duckworth, C, Dwelly, T, Ebelke, G, Emsellem, E, Escoffier, S, Fernández-Trincado, JG, Feuillet, D, Fischer, JL, Fleming, SW, Fraser-Mckelvie, A, Freischlad, G, Frinchaboy, PM, Fu, H, Galbany, L, Garcia-Dias, R, Garcia-Hernández, DA, Alberto Garma Oehmichen, L, Antonio Geimba Maia, M, Gil-Marin, H, Grabowski, K, Gu, M, Guo, H, Ha, J, Harrington, E, Hasselquist, S, Hayes, CR, Hearty, F, Hernandez Toledo, H, Hicks, H, Hogg, DW, Holley-Bockelmann, K, Holtzman, JA, Hsieh, BC, and Hunt, JAS

Subjects
atlases, catalogs, surveys, astro-ph.IM, Astronomy & Astrophysics, Astronomical and Space Sciences, Organic Chemistry, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

Twenty years have passed since first light for the Sloan Digital Sky Survey (SDSS). Here, we release data taken by the fourth phase of SDSS (SDSS-IV) across its first three years of operation (2014 July-2017 July). This is the third data release for SDSS-IV, and the 15th from SDSS (Data Release Fifteen; DR15). New data come from MaNGA - we release 4824 data cubes, as well as the first stellar spectra in the MaNGA Stellar Library (MaStar), the first set of survey-supported analysis products (e.g., stellar and gas kinematics, emission-line and other maps) from the MaNGA Data Analysis Pipeline, and a new data visualization and access tool we call "Marvin." The next data release, DR16, will include new data from both APOGEE-2 and eBOSS; those surveys release no new data here, but we document updates and corrections to their data processing pipelines. The release is cumulative; it also includes the most recent reductions and calibrations of all data taken by SDSS since first light. In this paper, we describe the location and format of the data and tools and cite technical references describing how it was obtained and processed. The SDSS website (www.sdss.org) has also been updated, providing links to data downloads, tutorials, and examples of data use. Although SDSS-IV will continue to collect astronomical data until 2020, and will be followed by SDSS-V (2020-2025), we end this paper by describing plans to ensure the sustainability of the SDSS data archive for many years beyond the collection of data.

Published
2019

4. 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

Author

Abolfathi, B, Aguado, DS, Aguilar, G, Prieto, CA, Almeida, A, Ananna, TT, Anders, F, Anderson, SF, Andrews, BH, Anguiano, B, Aragón-Salamanca, A, Argudo-Fernández, M, Armengaud, E, Ata, M, Aubourg, E, Avila-Reese, V, Badenes, C, Bailey, S, Balland, C, Barger, KA, Barrera-Ballesteros, J, Bartosz, C, Bastien, F, Bates, D, Baumgarten, F, Bautista, J, Beaton, R, Beers, TC, Belfiore, F, Bender, CF, Bernardi, M, Bershady, MA, Beutler, F, Bird, JC, Bizyaev, D, Blanc, GA, Blanton, MR, Blomqvist, M, Bolton, AS, Boquien, M, Borissova, J, Bovy, J, Bradna Diaz, CA, Nielsen Brandt, W, Brinkmann, J, Brownstein, JR, Bundy, K, Burgasser, AJ, Burtin, E, Busca, NG, Canãs, CI, Cano-Diáz, M, Cappellari, M, Carrera, R, Casey, AR, Sodi, BC, Chen, Y, Cherinka, B, Chiappini, C, Choi, PD, Chojnowski, D, Chuang, CH, Chung, H, Clerc, N, Cohen, RE, Comerford, JM, Comparat, J, Do Nascimento, JC, Da Costa, L, Cousinou, MC, Covey, K, Crane, JD, Cruz-Gonzalez, I, Cunha, K, Ilha, GDS, Damke, GJ, Darling, J, Davidson, JW, Dawson, K, De Icaza Lizaola, MAC, MacOrra, ADL, De La Torre, S, De Lee, N, Sainte Agathe, VD, Deconto MacHado, A, Dell'Agli, F, Delubac, T, Diamond-Stanic, AM, Donor, J, Downes, JJ, Drory, N, Mas Des Bourboux, HD, Duckworth, CJ, Dwelly, T, Dyer, J, Ebelke, G, Eigenbrot, AD, Eisenstein, DJ, Elsworth, YP, and Emsellem, E

Subjects
atlases, catalogs, surveys, astro-ph.GA, astro-ph.IM, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014-2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V.

Published
2018

5. The 13th Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey Mapping Nearby Galaxies at Apache Point Observatory

Author

Albareti, FD, Prieto, CA, Almeida, A, Anders, F, Anderson, S, Andrews, BH, Aragón-Salamanca, A, Argudo-Fernández, M, Armengaud, E, Aubourg, E, Avila-Reese, V, Badenes, C, Bailey, S, Barbuy, B, Barger, K, Barrera-Ballesteros, J, Bartosz, C, Basu, S, Bates, D, Battaglia, G, Baumgarten, F, Baur, J, Bautista, J, Beers, TC, Belfiore, F, Bershady, M, De Lis, SB, Bird, JC, Bizyaev, D, Blanc, GA, Blanton, M, Blomqvist, M, Bolton, AS, Borissova, J, Bovy, J, Brandt, WN, Brinkmann, J, Brownstein, JR, Bundy, K, Burtin, E, Busca, NG, Chavez, HOC, Diaz, MC, Cappellari, M, Carrera, R, Chen, Y, Cherinka, B, Cheung, E, Chiappini, C, Chojnowski, D, Chuang, CH, Chung, H, Cirolini, RF, Clerc, N, Cohen, RE, Comerford, JM, Comparat, J, Correa Do Nascimento, J, Cousinou, MC, Covey, K, Crane, JD, Croft, R, Cunha, K, Darling, J, Davidson, JW, Dawson, K, Da Costa, L, Da Silva Ilha, G, Machado, AD, Delubac, T, De Lee, N, De La Macorra, A, De La Torre, S, Diamond-Stanic, AM, Donor, J, Downes, JJ, Drory, N, Du, C, Du Mas Des Bourboux, H, Dwelly, T, Ebelke, G, Eigenbrot, A, Eisenstein, DJ, Elsworth, YP, Emsellem, E, Eracleous, M, Escoffier, S, Evans, ML, Falcón-Barroso, J, Fan, X, Favole, G, Fernandez-Alvar, E, Fernandez-Trincado, JG, Feuillet, D, Fleming, SW, Font-Ribera, A, Freischlad, G, Frinchaboy, P, Fu, H, and Gao, Y

Subjects
atlases, catalogs, surveys, astro-ph.GA, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) began observations in 2014 July. It pursues three core programs: the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2), Mapping Nearby Galaxies at APO (MaNGA), and the Extended Baryon Oscillation Spectroscopic Survey (eBOSS). As well as its core program, eBOSS contains two major subprograms: the Time Domain Spectroscopic Survey (TDSS) and the SPectroscopic IDentification of ERosita Sources (SPIDERS). This paper describes the first data release from SDSS-IV, Data Release 13 (DR13). DR13 makes publicly available the first 1390 spatially resolved integral field unit observations of nearby galaxies from MaNGA. It includes new observations from eBOSS, completing the Sloan Extended QUasar, Emission-line galaxy, Luminous red galaxy Survey (SEQUELS), which also targeted variability-selected objects and X-ray-selected objects. DR13 includes new reductions of the SDSS-III BOSS data, improving the spectrophotometric calibration and redshift classification, and new reductions of the SDSS-III APOGEE-1 data, improving stellar parameters for dwarf stars and cooler stars. DR13 provides more robust and precise photometric calibrations. Value-added target catalogs relevant for eBOSS, TDSS, and SPIDERS and an updated red-clump catalog for APOGEE are also available. This paper describes the location and format of the data and provides references to important technical papers. The SDSS web site, http://www.sdss.org, provides links to the data, tutorials, examples of data access, and extensive documentation of the reduction and analysis procedures. DR13 is the first of a scheduled set that will contain new data and analyses from the planned ∼6 yr operations of SDSS-IV.

Published
2017

6. A New RR Lyrae Metallicity Calibration

Author

Spalding, E., Wilhelm, R., and De Lee, N.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We have begun developing a new metallicity calibration for RR Lyrae stars that includes high-temperature phase regions. Our calibration is an updated and expanded version of the Delta-S, equivalent width method, but which is applicable for most phases of the pulsation, and for the hotter, shorter-period RRc stars. This calibration will be constructed from spectral observations of well studied, bright RR Lyrae stars with metallicities from published high-resolution studies, within the range $-2.5 < [Fe/H] < -0.3$. Phase information for our calibration stars were taken from the AAVSO website, and the MacAdam Student Observatory at the University of Kentucky. Low-resolution spectroscopy $(R \sim 1000)$ was obtained using the McDonald Observatory, 2.1 meter telescope. Here we present our preliminary data, and find the phase region where the calibration will break down., Comment: Presented at the "40 Years of Variable Stars: A Celebration of Contributions by Horace A. Smith" conference (arXiv:1310.0149). 4 pages, 2 figures

Published
2013

7. Physical Parameters for RR Lyrae Stars in the SDSS Filter System

Author

Catelan, M., Torrealba, G. I., Caceres, C., Smith, H. A., De Lee, N., and Fitzgerald, M.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

We present a calibration of the metallicity and physical parameters (temperature, luminosity, gravity, mass, radius) for RR Lyrae stars using the ugriz SDSS photometric system. Our work is based on calculations of synthetic horizontal branches (HBs), fully taking into account evolutionary effects for a wide range in metallicities and HB morphologies. We provide analytical fits that are able to provide all quantities mentioned with very high (internal) precision, based solely on mean SDSS magnitudes and colors., Comment: 4 pages, contributed paper, proceedings IAU Symp. 289

Published
2013
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8. The Leo IV dwarf spheroidal galaxy: color-magnitude diagram and pulsating stars

Author

Moretti, M. I., Dall'Ora, M., Ripepi, V., Clementini, G., Di Fabrizio, L., Smith, H., De Lee, N., Kuehn, C., Catelan, M., Marconi, M., Musella, I., Beers, T., and Kinemuchi, K.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We present the first V, B-V color-magnitude diagram of the Leo IV dwarf spheroidal galaxy, a faint Milky Way satellite recently discovered by the Sloan Digital Sky Survey. We have obtained B,V time-series photometry reaching about half a magnitude below the Leo IV turnoff, which we detect at V= 24.7 mag, and have performed the first study of the variable star population. We have identified three RR Lyrae stars (all fundamental-mode pulsators, RRab) and one SX Phoenicis variable in the galaxy. In the period-amplitude diagram the Leo IV RR Lyrae stars are located close to the loci of Oosterhoff type I systems and the evolved fundamental-mode RR Lyrae stars in the Galactic globular cluster M3. However, their mean pulsation period, $$=0.655 days, would suggest an Oosterhoff type II classification for this galaxy. The RR Lyrae stars trace very well the galaxy's horizontal branch, setting its average magnitude at $= 21.48 \pm 0.03$ mag (standard deviation of the mean). This leads to a distance modulus of $\mu_{0}=20.94 \pm 0.07$ mag, corresponding to a distance of $154 \pm 5$ kpc, by adopting for the Leo IV dSph a reddening $E(B-V) = 0.04 \pm 0.01$ mag and a metallicity of [Fe/H] = -2.31 $\pm$ 0.10., Comment: 14 pages, 4 figures, accepted for publication on The Astrophysical Journal Letters

Published
2009
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9. The tenth data release of the Sloan digital sky survey: First spectroscopic data from the SDSS-iii apache point observatory galactic evolution experiment

Author

Gott, JR, Mack, CE, Ahn, CP, Alexandroff, R, Allende Prieto, C, Anders, F, Anderson, SF, Anderton, T, Andrews, BH, Aubourg, E, Bailey, S, Bastien, FA, Bautista, JE, Beers, TC, Beifiori, A, Bender, CF, Berlind, AA, Beutler, F, Bhardwaj, V, Bird, JC, Bizyaev, D, Blake, CH, Blanton, MR, Blomqvist, M, Bochanski, JJ, Bolton, AS, Borde, A, Bovy, J, Bradley, AS, Brandt, WN, Brauer, D, Brinkmann, J, Brownstein, JR, Busca, NG, Carithers, W, Carlberg, JK, Carnero, AR, Carr, MA, Chiappini, C, Chojnowski, SD, Chuang, CH, Comparat, J, Crepp, JR, Cristiani, S, Croft, RAC, Cuesta, AJ, Cunha, K, Da Costa, LN, Dawson, KS, De Lee, N, Dean, JDR, Delubac, T, Deshpande, R, Dhital, S, Ealet, A, Ebelke, GL, Edmondson, EM, Eisenstein, DJ, Epstein, CR, Escoffier, S, Esposito, M, Evans, ML, Fabbian, D, Fan, X, Favole, G, Femenía Castellá, B, Fernández Alvar, E, Feuillet, D, Filiz Ak, N, Finley, H, Fleming, SW, Font-Ribera, A, Frinchaboy, PM, Galbraith-Frew, JG, García-Hernández, DA, Pérez, AEG, Ge, J, Génova-Santos, R, Gillespie, BA, Girardi, L, González Hernández, JI, Gunn, JE, Guo, H, Halverson, S, Harding, P, Harris, DW, Hasselquist, S, Hawley, SL, Hayden, M, Hearty, FR, Herrero Davó, A, Ho, S, Hogg, DW, Holtzman, JA, Honscheid, K, Huehnerhoff, J, Ivans, II, Jackson, KM, Jiang, P, and Johnson, JA

Subjects
atlases, catalogs, surveys, astro-ph.IM, astro-ph.CO, astro-ph.GA, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

The Sloan Digital Sky Survey (SDSS) has been in operation since 2000 April. This paper presents the Tenth Public Data Release (DR10) from its current incarnation, SDSS-III. This data release includes the first spectroscopic data from the Apache Point Observatory Galaxy Evolution Experiment (APOGEE), along with spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS) taken through 2012 July. The APOGEE instrument is a near-infrared R 22,500 300 fiber spectrograph covering 1.514-1.696 μm. The APOGEE survey is studying the chemical abundances and radial velocities of roughly 100,000 red giant star candidates in the bulge, bar, disk, and halo of the Milky Way. DR10 includes 178,397 spectra of 57,454 stars, each typically observed three or more times, from APOGEE. Derived quantities from these spectra (radial velocities, effective temperatures, surface gravities, and metallicities) are also included. DR10 also roughly doubles the number of BOSS spectra over those included in the Ninth Data Release. DR10 includes a total of 1,507,954 BOSS spectra comprising 927,844 galaxy spectra, 182,009 quasar spectra, and 159,327 stellar spectra selected over 6373.2 deg2. © 2014. The American Astronomical Society. All rights reserved..

Published
2014

10. Variable stars in the Fornax dSph Galaxy. I. The Globular Cluster Fornax 4

Author

Greco, C., Clementini, G., Catelan, M., Held, E. V., Poretti, E., Gullieuszik, M., Maio, M., Rest, A., De Lee, N., Smith, H. A., and Pritzl, B. J.

Subjects
Astrophysics
Abstract

Variable stars have been identified for the first time in Fornax 4, the globular cluster located near the center of the Fornax dwarf spheroidal galaxy. By applying the image subtraction technique to B,V time series photometry obtained with the MagIC camera of the 6.5-m Magellan/Clay telescope and with the wide field imager of the 4-m Blanco/CTIO telescope, we detected 27 RR Lyrae stars (22 fundamental mode, 3 first overtone, and 2 double-mode pulsators) in a 2.4'x2.4' area centered on Fornax 4. The average and minimum periods of the ab-type RR Lyrae stars, = 0.594 d and P(ab,min)=0.5191 d, respectively, as well as the revised position of the cluster in the horizontal branch type--metallicity plane, all consistently point to an Oosterhoff-intermediate status for the cluster, unlike what is seen for the vast majority of Galactic globular clusters, but in agreement with previous indications for the other globular clusters in Fornax. The average apparent magnitude of the RR Lyrae stars located within 30 arcsec from the cluster center is =21.43 +/- 0.03 mag (sigma=0.10 mag, average on 12 stars), leading to a true distance modulus of (m-M)o=20.64 +/- 0.09 mag or (m-M)o=20.53 +/- 0.09 mag, depending on whether a low ([Fe/H]=-2.0) or a moderately high ([Fe/H]=-1.5) metallicity is adopted., Comment: Apj, in press

Published
2007
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11. Completing the Census of (Bright) Variable Stars in Galactic Globular Clusters

Author

Catelan, M., Smith, H. A., Pritzl, B. J., Borissova, J., Cacciari, C., Contreras, R., Corwin, T. M., De Lee, N., Escobar, M. E., Layden, A. C., Navarro, C., Prieto, G., Salinas, R., Stetson, P. B., Sweigart, A. V., Vidal, E., Zoccali, M., and Zorotovic, M.

Subjects
Astrophysics
Abstract

We present a long-term project aimed at completing the census of (bright) variable stars in Galactic globular clusters. While our main aim is to obtain a reliable assessment of the populations of RR Lyrae and type II Cepheid stars in the Galactic globular cluster system, due attention is also being paid to other types of variables, including SX Phoenicis stars, long-period variables, and eclipsing binaries., Comment: 4 pages, 4 figures. MSAIt, in press

Published
2005

12. Variable stars in Fornax dwarf spheroidal galaxy

Author

Greco, C., Clementini, G., Held, E. V., Poretti, E., Catelan, M., Dell'Arciprete, L., Gullieuszik, M., Maio, M., Rizzi, L., Smith, H. A., Pritzl, B. J., Rest, A., and De Lee, N.

Subjects
Astrophysics
Abstract

We present the first results of a variable star search in the field and in the globular clusters of the Fornax dwarf spheroidal galaxy. Variable stars were identified using the Image Subtraction Technique (Alard 2000) on time-series data obtained with the ESO 2.2 m and the Magellan 6.5 m telescopes. The variable star sample includes RR Lyrae stars, Dwarf Cepheids and Anomalous Cepheids. The pulsation properties (namely: periods, light curves, period-amplitude relations and classification in Oosterhoff types) of Fornax variables from the present study are discussed in some detail., Comment: 10 pages, 9 figures, to appear in the Proceedings of "Resolved Stellar Populations", 2005, Cancun, Mexico

Published
2005

13. uvbyCaHbeta CCD Photometry of Clusters. III. The Most Metal-Rich Open Cluster, NGC 6253

Author

Twarog, B. A., Anthony-Twarog, B. J., and De Lee, N.

Subjects
Astrophysics
Abstract

CCD photometry on the intermediate-band uvbyCaH-beta system is presented for the old open cluster, NGC 6253. Despite a high level of field star contamination due to its location toward the galactic center, combination of the data from the multiple color indices with the core cluster sample derived from radial star counts leads to the identification of a set of highly probable, single cluster members. Photometric analysis of a select sample of 71 turnoff stars produces a reddening value of E(b-y) = 0.190 +/-0.002 (s.e.m.) or E(B-V) = 0.260 +/- 0.003 (s.e.m.) from 71 stars. The metallicity indices, delta-m1 and delta-hk, both identify this cluster as the most metal-rich object studied on either system to date. Simple extrapolation of the available metallicity calibrations leads to [Fe/H] ranging from +0.7 to +0.9. Metal-rich isochrones with overshoot imply an age between 2.5 and 3.5 Gyr, with an apparent distance modulus between (m-M)= 11.6 and 12.2, depending upon the isochrones used. The improvement in the fit using alpha-enhanced isochrones may indicate that the cluster [Fe/H] is closer to +0.4, but the photometric indices are distorted by an elemental distribution other than a scaled solar. The galacto- centric position of the cluster, in conjunction with data for other clusters and Cepheids, is consistent with the inner disk reaching and maintaining a metallicity well above solar since the early history of the disk, unlike the solar neighborhood., Comment: Accepted for March 2003 AJ; 19 pages in preprint format; 12 compressed jpeg figures; 1 postscript table, and 1 data table accessible at http://kubarb.phsx.ukans.edu/~anthony/6253.tab1.txt

Published
2002
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14. The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar, and APOGEE-2 Data

Author

Abdurro'Uf, Accetta, K, Aerts, C, Silva Aguirre, V, Ahumada, R, Ajgaonkar, N, Filiz Ak, N, Alam, S, Allende Prieto, C, Almeida, A, Anders, F, Anderson, SF, Andrews, BH, Anguiano, B, Aquino-Ortíz, E, Aragón-Salamanca, A, Argudo-Fernández, M, Ata, M, Aubert, M, Avila-Reese, V, Badenes, C, Barbá, RH, Barger, K, Barrera-Ballesteros, JK, Beaton, RL, Beers, TC, Belfiore, F, Bender, CF, Bernardi, M, Bershady, MA, Beutler, F, Bidin, CM, Bird, JC, Bizyaev, D, Blanc, GA, Blanton, MR, Boardman, NF, Bolton, AS, Boquien, M, Borissova, J, Bovy, J, Brandt, WN, Brown, J, Brownstein, Brusa, M, Buchner, J, Bundy, K, Burchett, JN, Bureau, M, Burgasser, A, Cabang, TK, Campbell, S, Cappellari, M, Carlberg, JK, Wanderley, FC, Carrera, R, Cash, J, Chen, YP, Chen, WH, Cherinka, B, Chiappini, C, Choi, PD, Chojnowski, SD, Chung, H, Clerc, N, Cohen, RE, Comerford, JM, Comparat, J, Da Costa, L, Covey, K, Crane, JD, Cruz-Gonzalez, I, Culhane, C, Cunha, K, Dai, YS, Damke, G, Darling, J, Davidson, JW, Davies, R, Dawson, K, De Lee, N, Diamond-Stanic, AM, Cano-Díaz, M, Sánchez, HD, Donor, J, Duckworth, C, Dwelly, T, Eisenstein, DJ, Elsworth, YP, Emsellem, E, Eracleous, M, Escoffier, S, Fan, X, Farr, E, Feng, S, Fernández-Trincado, JG, Feuillet, D, Filipp, A, Fillingham, SP, Frinchaboy, PM, Silva Aguirre, V [0000-0002-6137-903X], Ajgaonkar, N [0000-0003-1469-8246], Filiz Ak, N [0000-0003-3016-5490], Allende Prieto, C [0000-0002-0084-572X], Andrews, BH [0000-0001-8085-5890], Anguiano, B [0000-0001-5261-4336], Aquino-Ortíz, E [0000-0003-1083-9208], Aragón-Salamanca, A [0000-0001-8215-1256], Argudo-Fernández, M [0000-0002-0789-2326], Ata, M [0000-0002-5934-9018], Avila-Reese, V [0000-0002-3461-2342], Badenes, C [0000-0003-3494-343X], Barger, K [0000-0001-5817-0932], Barrera-Ballesteros, JK [0000-0003-2405-7258], Beaton, RL [0000-0002-1691-8217], Beers, TC [0000-0003-4573-6233], Belfiore, F [0000-0002-2545-5752], Bender, CF [0000-0003-4384-7220], Bershady, MA [0000-0002-3131-4374], Bizyaev, D [0000-0002-3601-133X], Blanc, GA [0000-0003-4218-3944], Blanton, MR [0000-0003-1641-6222], Boquien, M [0000-0003-0946-6176], Borissova, J [0000-0002-5936-7718], Bovy, J [0000-0001-6855-442X], Brandt, WN [0000-0002-0167-2453], Brownstein, JR [0000-0002-8725-1069], Brusa, M [0000-0002-5059-6848], Buchner, J [0000-0003-0426-6634], Bundy, K [0000-0001-9742-3138], Burchett, JN [0000-0002-1979-2197], Bureau, M [0000-0003-4980-1012], Burgasser, A [0000-0002-6523-9536], Cappellari, M [0000-0002-1283-8420], Carlberg, JK [0000-0001-5926-4471], Chen, YP [0000-0001-8821-0309], Cherinka, B [0000-0002-4289-7923], Chojnowski, SD [0000-0001-9984-0891], Comparat, J [0000-0001-9200-1497], Da Costa, L [0000-0002-7731-277X], Covey, K [0000-0001-6914-7797], Cruz-Gonzalez, I [0000-0002-2653-1120], Cunha, K [0000-0001-6476-0576], Dai, YS [0000-0002-7928-416X], Darling, J [0000-0003-2511-2060], Davies, R [0000-0001-7897-3812], Dawson, K [0000-0002-0553-3805], De Lee, N [0000-0002-3657-0705], Cano-Díaz, M [0000-0001-9553-8230], Eisenstein, DJ [0000-0002-2929-3121], Emsellem, E [0000-0002-6155-7166], Eracleous, M [0000-0002-3719-940X], Escoffier, S [0000-0002-2847-7498], Fan, X [0000-0003-3310-0131], Feng, S [0000-0002-9767-9237], Feuillet, D [0000-0002-3101-5921], Fillingham, SP [0000-0002-8425-0351], Frinchaboy, PM [0000-0002-0740-8346], and Apollo - University of Cambridge Repository

Subjects
Particle and Plasma Physics, 5101 Astronomical Sciences, Molecular, Nuclear, Astronomy & Astrophysics, Atomic, 51 Physical Sciences, Astronomical and Space Sciences, Physical Chemistry (incl. Structural)
Abstract

This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete release of the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, which reached its goal of surveying over 10,000 nearby galaxies. The complete release of the MaNGA Stellar Library accompanies this data, providing observations of almost 30,000 stars through the MaNGA instrument during bright time. DR17 also contains the complete release of the Apache Point Observatory Galactic Evolution Experiment 2 survey that publicly releases infrared spectra of over 650,000 stars. The main sample from the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), as well as the subsurvey Time Domain Spectroscopic Survey data were fully released in DR16. New single-fiber optical spectroscopy released in DR17 is from the SPectroscipic IDentification of ERosita Survey subsurvey and the eBOSS-RM program. Along with the primary data sets, DR17 includes 25 new or updated value-added catalogs. This paper concludes the release of SDSS-IV survey data. SDSS continues into its fifth phase with observations already underway for the Milky Way Mapper, Local Volume Mapper, and Black Hole Mapper surveys.

Published
2022
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15. Final Targeting Strategy for the Sloan Digital Sky Survey IV Apache Point Observatory Galactic Evolution Experiment 2 North Survey

Author

Beaton, RL, Beaton, RL, Oelkers, RJ, Hayes, CR, Covey, KR, Chojnowski, SD, De Lee, N, Sobeck, JS, Majewski, SR, Cohen, RE, Fernández-Trincado, J, Longa-Pea, P, O'Connell, JE, Santana, FA, Stringfellow, GS, Zasowski, G, Aerts, C, Anguiano, B, Bender, C, Caas, CI, Cunha, K, Donor, J, Fleming, SW, Frinchaboy, PM, Feuillet, D, Harding, P, Hasselquist, S, Holtzman, JA, Johnson, JA, Kollmeier, JA, Kounkel, M, Mahadevan, S, Price-Whelan, AM, Rojas-Arriagada, A, Román-Zúiga, C, Schlafly, EF, Schultheis, M, Shetrone, M, Simon, JD, Stassun, KG, Stutz, AM, Tayar, J, Teske, J, Tkachenko, A, Troup, N, Albareti, FD, Bizyaev, D, Bovy, J, Burgasser, AJ, Comparat, J, Downes, JJ, Geisler, D, Inno, L, Manchado, A, Ness, MK, Pinsonneault, MH, Prada, F, Roman-Lopes, A, Simonian, GVA, Smith, VV, Yan, R, Zamora, O, Beaton, RL, Beaton, RL, Oelkers, RJ, Hayes, CR, Covey, KR, Chojnowski, SD, De Lee, N, Sobeck, JS, Majewski, SR, Cohen, RE, Fernández-Trincado, J, Longa-Pea, P, O'Connell, JE, Santana, FA, Stringfellow, GS, Zasowski, G, Aerts, C, Anguiano, B, Bender, C, Caas, CI, Cunha, K, Donor, J, Fleming, SW, Frinchaboy, PM, Feuillet, D, Harding, P, Hasselquist, S, Holtzman, JA, Johnson, JA, Kollmeier, JA, Kounkel, M, Mahadevan, S, Price-Whelan, AM, Rojas-Arriagada, A, Román-Zúiga, C, Schlafly, EF, Schultheis, M, Shetrone, M, Simon, JD, Stassun, KG, Stutz, AM, Tayar, J, Teske, J, Tkachenko, A, Troup, N, Albareti, FD, Bizyaev, D, Bovy, J, Burgasser, AJ, Comparat, J, Downes, JJ, Geisler, D, Inno, L, Manchado, A, Ness, MK, Pinsonneault, MH, Prada, F, Roman-Lopes, A, Simonian, GVA, Smith, VV, Yan, R, and Zamora, O

Abstract

The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is a dual-hemisphere, near-infrared (NIR), spectroscopic survey with the goal of producing a chemodynamical mapping of the Milky Way. The targeting for APOGEE-2 is complex and has evolved with time. In this paper, we present the updates and additions to the initial targeting strategy for APOGEE-2N presented in Zasowski et al. (2017). These modifications come in two implementation modes: (i) "Ancillary Science Programs"competitively awarded to Sloan Digital Sky Survey IV PIs through proposal calls in 2015 and 2017 for the pursuit of new scientific avenues outside the main survey, and (ii) an effective 1.5 yr expansion of the survey, known as the Bright Time Extension (BTX), made possible through accrued efficiency gains over the first years of the APOGEE-2N project. For the 23 distinct ancillary programs, we provide descriptions of the scientific aims, target selection, and how to identify these targets within the APOGEE-2 sample. The BTX permitted changes to the main survey strategy, the inclusion of new programs in response to scientific discoveries or to exploit major new data sets not available at the outset of the survey design, and expansions of existing programs to enhance their scientific success and reach. After describing the motivations, implementation, and assessment of these programs, we also leave a summary of lessons learned from nearly a decade of APOGEE-1 and APOGEE-2 survey operations. A companion paper, F. Santana et al. (submitted; AAS29036), provides a complementary presentation of targeting modifications relevant to APOGEE-2 operations in the Southern Hemisphere.

Published
2021

17. Precision Stellar Astrophysics and Galactic Archaeology: 2020

Author

Kollmeier, J., Fuller, J., Gaensicke, B., Gaudi, S., Nataf, D., Rix, H., Aerts, C., Anderson, S., Anderson, L., Anguiano, B., Basu, S., Bird, J., Brown, A., Bullock, J., Cunha, K., De Lee, N., Hekker, S., Johnson, J., Lane, R., Ness, M., Pinsonneault, M., Schwope, A., Aguirre, V., Steinmetz, M., Stevens, D., Teske, J., Tkachenko, A., Stassun, K., Ting, Y., Stutz, A., Weinberg, D., and Zasowski, G.

Subjects
Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Physics::History of Physics, Astrophysics::Galaxy Astrophysics
Abstract

This white paper is meant to capture many different elements of stellar astrophysics and galactic archaeology that highlight the important role this science will play in the 2020s era of precision astronomy.

Published
2019

18. The APOGEE-2 Survey of the Orion Star-forming Complex. I. Target Selection and Validation with Early Observations

Author

Cottle, J., Covey, K., Suárez, G., Román-Zúñiga, C., Schlafly, E., Downes, J., Ybarra, J., Hernandez, J., Stassun, K., Stringfellow, G., Getman, K., Feigelson, E., Borissova, J., Kim, J., Roman-Lopes, A., Da Rio, N., De Lee, N., Frinchaboy, P., Kounkel, M., Majewski, S., Mennickent, R., Nidever, D., Nitschelm, C., Pan, K., Shetrone, M., Zasowski, G., Chambers, K., Magnier, E., and Valenti, J.

Abstract

The Orion Star-forming Complex (OSFC) is a central target for the APOGEE-2 Young Cluster Survey. Existing membership catalogs span limited portions of the OSFC, reflecting the difficulty of selecting targets homogeneously across this extended, highly structured region. We have used data from wide-field photometric surveys to produce a less biased parent sample of young stellar objects (YSOs) with infrared (IR) excesses indicative of warm circumstellar material or photometric variability at optical wavelengths across the full 420 square degree extent of the OSFC. When restricted to YSO candidates with H < 12.4, to ensure S/N ̃ 100 for a six-visit source, this uniformly selected sample includes 1307 IR excess sources selected using criteria vetted by Koenig & Liesawitz (2014) and 990 optical variables identified in the Pan-STARRS1 3π survey: 319 sources exhibit both optical variability and evidence of circumstellar disks through IR excess. Objects from this uniformly selected sample received the highest priority for targeting, but required fewer than half of the fibers on each APOGEE-2 plate. We filled the remaining fibers with previously confirmed and new color- magnitude selected candidate OSFC members. Radial velocity measurements from APOGEE-1 and new APOGEE-2 observations taken in the survey’s first year indicate that ̃90% of the uniformly selected targets have radial velocities consistent with Orion membership. The APOGEE-2 Orion survey will include >1100 bona fide YSOs whose uniform selection function will provide a robust sample for comparative analyses of the stellar populations and properties across all sub-regions of Orion.

Published
2018

19. Binary Companions of Evolved Stars in APOGEE DR14: Search Method and Catalog of ∼5000 Companions

Author

Price-Whelan, A., Hogg, D., Rix, H., De Lee, N., Majewski, S., Nidever, D., Troup, N., Fernández-Trincado, J., García-Hernández, D., Longa-Peña, P., Nitschelm, C., Sobeck, J., and Zamora, O.

Subjects
Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Multi-epoch radial velocity measurements of stars can be used to identify stellar, substellar, and planetary-mass companions. Even a small number of observation epochs can be informative about companions, though there can be multiple qualitatively different orbital solutions that fit the data. We have custom-built a Monte Carlo sampler (The Joker) that delivers reliable (and often highly multimodal) posterior samplings for companion orbital parameters given sparse radial velocity data. Here we use The Joker to perform a search for companions to 96,231 red giant stars observed in the APOGEE survey (DR14) with ≥3 spectroscopic epochs. We select stars with probable companions by making a cut on our posterior belief about the amplitude of the variation in stellar radial velocity induced by the orbit. We provide (1) a catalog of 320 companions for which the stellar companion’s properties can be confidently determined, (2) a catalog of 4898 stars that likely have companions, but would require more observations to uniquely determine the orbital properties, and (3) posterior samplings for the full orbital parameters for all stars in the parent sample. We show the characteristics of systems with confidently determined companion properties and highlight interesting systems with candidate compact object companions.

Published
2018

20. Transiting Exoplanet Survey Satellite (TESS)

Author

Ricker, G.~R., Winn, J.~N., Vanderspek, R, Latham, D.~W., Bakos, G.~Á., Bean, J.~L., Berta-Thompson, Z.~K., Brown, T.~M., Buchhave, L, Butler, N.~R., Butler, R.~P., Chaplin, W.~J., Charbonneau, D, Christensen-Dalsgaard, J, Clampin, M, Deming, D, Doty, J, De Lee, N, Dressing, C, Dunham, E.~W., Endl, M, Fressin, F, Ge, J, Henning, T, Holman, M.~J., Howard, A.~W., IDA, SHIGERU, Jenkins, J.~M., Jernigan, G, Johnson, J.~A., Kaltenegger, L, Kawai, Nobuyuki, Kjeldsen, H, Laughlin, G, Levine, A.~M., Lin, D, Lissauer, J.~J., MacQueen, P, Marcy, G, McCullough, P.~R., Morton, T.~D., Narita, N, Paegert, M, Palle, E, Pepe, F, Pepper, J, Quirrenbach, A, Rinehart, S.~A., Sasselov, D, Sato, Bunei, Seager, S, Sozzetti, A, Stassun, K.~G., Sullivan, P, Szentgyorgyi, A, Torres, G, Udry, S, and Villasenor, J

Published
2015

24. Broadband UBVR cIc photometry of horizontal-branch and metal-poor candidates from the HK and Hamburg/ESO surveys. I.

Author

Beers, T. C., Flynn, C., Rossi, S., Sommer-Larsen, J., Wilhelm, R., Marsteller, B., Lee, Y S., De Lee, N., Krugler, J., Deliyanni, C P., Zickgraf, F-J, Holmberg, J., Önehag, A., Eriksson, A., Trendrup, M. D., Salim, S., Andersen, Johannes, Nordström, Birgitta, Christlieb, N., Frebel, A., Beers, T. C., Flynn, C., Rossi, S., Sommer-Larsen, J., Wilhelm, R., Marsteller, B., Lee, Y S., De Lee, N., Krugler, J., Deliyanni, C P., Zickgraf, F-J, Holmberg, J., Önehag, A., Eriksson, A., Trendrup, M. D., Salim, S., Andersen, Johannes, Nordström, Birgitta, Christlieb, N., and Frebel, A.

Abstract

Udgivelsesdato: Jan.

Published
2007

25. Looking for building blocks of the Galactic halo: variable stars in the Fornax, Bootes I, Canes Venatici II dwarfs and in NGC 2419

Author

Greco, Claudia, primary, Clementini, Gisella, additional, Held, E. V., additional, Poretti, E., additional, Catelan, M., additional, Federici, L., additional, Maio, M., additional, Gullieuszik, M., additional, Ripepi, V., additional, Dall'Ora, M., additional, Di Fabrizio, L., additional, Kinemuchi, K., additional, Di Crescienzo, M., additional, Marconi, M., additional, Musella, I., additional, Pritzl, B., additional, Rest, A., additional, De Lee, N., additional, and Smith, H., additional

Published
2009
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26. The Oosterhoff types of the Fornax dSph Globular Clusters

Author

Greco, C., primary, Clementini, G., additional, Catelan, M., additional, Poretti, E., additional, Held, E. V., additional, Gullieuszik, M., additional, Maio, M., additional, Rest, A., additional, De Lee, N., additional, Smith, H. A., additional, and Pritzl, B. J., additional

Published
2006
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28. The 16th Data Release of the Sloan Digital Sky Surveys : First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra

Author

Romina Ahumada, Carlos Allende Prieto, Andrés Almeida, Friedrich Anders, Scott F. Anderson, Brett H. Andrews, Borja Anguiano, Riccardo Arcodia, Eric Armengaud, Marie Aubert, Santiago Avila, Vladimir Avila-Reese, Carles Badenes, Christophe Balland, Kat Barger, Jorge K. Barrera-Ballesteros, Sarbani Basu, Julian Bautista, Rachael L. Beaton, Timothy C. Beers, B. Izamar T. Benavides, Chad F. Bender, Mariangela Bernardi, Matthew Bershady, Florian Beutler, Christian Moni Bidin, Jonathan Bird, Dmitry Bizyaev, Guillermo A. Blanc, Michael R. Blanton, Médéric Boquien, Jura Borissova, Jo Bovy, W. N. Brandt, Jonathan Brinkmann, Joel R. Brownstein, Kevin Bundy, Martin Bureau, Adam Burgasser, Etienne Burtin, Mariana Cano-Díaz, Raffaella Capasso, Michele Cappellari, Ricardo Carrera, Solène Chabanier, William Chaplin, Michael Chapman, Brian Cherinka, Cristina Chiappini, Peter Doohyun Choi, S. Drew Chojnowski, Haeun Chung, Nicolas Clerc, Damien Coffey, Julia M. Comerford, Johan Comparat, Luiz da Costa, Marie-Claude Cousinou, Kevin Covey, Jeffrey D. Crane, Katia Cunha, Gabriele da Silva Ilha, Yu Sophia Dai, Sanna B. Damsted, Jeremy Darling, James W. Davidson, Roger Davies, Kyle Dawson, Nikhil De, Axel de la Macorra, Nathan De Lee, Anna Bárbara de Andrade Queiroz, Alice Deconto Machado, Sylvain de la Torre, Flavia Dell’Agli, Hélion du Mas des Bourboux, Aleksandar M. Diamond-Stanic, Sean Dillon, John Donor, Niv Drory, Chris Duckworth, Tom Dwelly, Garrett Ebelke, Sarah Eftekharzadeh, Arthur Davis Eigenbrot, Yvonne P. Elsworth, Mike Eracleous, Ghazaleh Erfanianfar, Stephanie Escoffier, Xiaohui Fan, Emily Farr, José G. Fernández-Trincado, Diane Feuillet, Alexis Finoguenov, Patricia Fofie, Amelia Fraser-McKelvie, Peter M. Frinchaboy, Sebastien Fromenteau, Hai Fu, Lluís Galbany, Rafael A. Garcia, D. A. García-Hernández, Luis Alberto Garma Oehmichen, Junqiang Ge, Marcio Antonio Geimba Maia, Doug Geisler, Joseph Gelfand, Julian Goddy, Violeta Gonzalez-Perez, Kathleen Grabowski, Paul Green, Catherine J. Grier, Hong Guo, Julien Guy, Paul Harding, Sten Hasselquist, Adam James Hawken, Christian R. Hayes, Fred Hearty, S. Hekker, David W. Hogg, Jon A. Holtzman, Danny Horta, Jiamin Hou, Bau-Ching Hsieh, Daniel Huber, Jason A. S. Hunt, J. Ider Chitham, Julie Imig, Mariana Jaber, Camilo Eduardo Jimenez Angel, Jennifer A. Johnson, Amy M. Jones, Henrik Jönsson, Eric Jullo, Yerim Kim, Karen Kinemuchi, Charles C. Kirkpatrick IV, George W. Kite, Mark Klaene, Jean-Paul Kneib, Juna A. Kollmeier, Hui Kong, Marina Kounkel, Dhanesh Krishnarao, Ivan Lacerna, Ting-Wen Lan, Richard R. Lane, David R. Law, Jean-Marc Le Goff, Henry W. Leung, Hannah Lewis, Cheng Li, Jianhui Lian, Lihwai Lin, Dan Long, Penélope Longa-Peña, Britt Lundgren, Brad W. Lyke, J. Ted Mackereth, Chelsea L. MacLeod, Steven R. Majewski, Arturo Manchado, Claudia Maraston, Paul Martini, Thomas Masseron, Karen L. Masters, Savita Mathur, Richard M. McDermid, Andrea Merloni, Michael Merrifield, Szabolcs Mészáros, Andrea Miglio, Dante Minniti, Rebecca Minsley, Takamitsu Miyaji, Faizan Gohar Mohammad, Benoit Mosser, Eva-Maria Mueller, Demitri Muna, Andrea Muñoz-Gutiérrez, Adam D. Myers, Seshadri Nadathur, Preethi Nair, Kirpal Nandra, Janaina Correa do Nascimento, Rebecca Jean Nevin, Jeffrey A. Newman, David L. Nidever, Christian Nitschelm, Pasquier Noterdaeme, Julia E. O’Connell, Matthew D. Olmstead, Daniel Oravetz, Audrey Oravetz, Yeisson Osorio, Zachary J. Pace, Nelson Padilla, Nathalie Palanque-Delabrouille, Pedro A. Palicio, Hsi-An Pan, Kaike Pan, James Parker, Romain Paviot, Sebastien Peirani, Karla Peña Ramŕez, Samantha Penny, Will J. Percival, Ismael Perez-Fournon, Ignasi Pérez-Ràfols, Patrick Petitjean, Matthew M. Pieri, Marc Pinsonneault, Vijith Jacob Poovelil, Joshua Tyler Povick, Abhishek Prakash, Adrian M. Price-Whelan, M. Jordan Raddick, Anand Raichoor, Amy Ray, Sandro Barboza Rembold, Mehdi Rezaie, Rogemar A. Riffel, Rogério Riffel, Hans-Walter Rix, Annie C. Robin, A. Roman-Lopes, Carlos Román-Zúñiga, Benjamin Rose, Ashley J. Ross, Graziano Rossi, Kate Rowlands, Kate H. R. Rubin, Mara Salvato, Ariel G. Sánchez, Laura Sánchez-Menguiano, José R. Sánchez-Gallego, Conor Sayres, Adam Schaefer, Ricardo P. Schiavon, Jaderson S. Schimoia, Edward Schlafly, David Schlegel, Donald P. Schneider, Mathias Schultheis, Axel Schwope, Hee-Jong Seo, Aldo Serenelli, Arman Shafieloo, Shoaib Jamal Shamsi, Zhengyi Shao, Shiyin Shen, Matthew Shetrone, Raphael Shirley, Víctor Silva Aguirre, Joshua D. Simon, M. F. Skrutskie, Anže Slosar, Rebecca Smethurst, Jennifer Sobeck, Bernardo Cervantes Sodi, Diogo Souto, David V. Stark, Keivan G. Stassun, Matthias Steinmetz, Dennis Stello, Julianna Stermer, Thaisa Storchi-Bergmann, Alina Streblyanska, Guy S. Stringfellow, Amelia Stutz, Genaro Suárez, Jing Sun, Manuchehr Taghizadeh-Popp, Michael S. Talbot, Jamie Tayar, Aniruddha R. Thakar, Riley Theriault, Daniel Thomas, Zak C. Thomas, Jeremy Tinker, Rita Tojeiro, Hector Hernandez Toledo, Christy A. Tremonti, Nicholas W. Troup, Sarah Tuttle, Eduardo Unda-Sanzana, Marica Valentini, Jaime Vargas-González, Mariana Vargas-Magaña, Jose Antonio Vázquez-Mata, M. Vivek, David Wake, Yuting Wang, Benjamin Alan Weaver, Anne-Marie Weijmans, Vivienne Wild, John C. Wilson, Robert F. Wilson, Nathan Wolthuis, W. M. Wood-Vasey, Renbin Yan, Meng Yang, Christophe Yèche, Olga Zamora, Pauline Zarrouk, Gail Zasowski, Kai Zhang, Cheng Zhao, Gongbo Zhao, Zheng Zheng, Guangtun Zhu, Hu Zou, Department of Physics, Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Instituto de Astrofisica de Canarias (IAC), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Universidad Nacional Autónoma de México (UNAM), Department of Astrophysical Sciences [Princeton], Princeton University, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Department of Astronomy, Yale University [New Haven], University of Notre Dame [Indiana] (UND), Department of Physics and Astronomy [Philadelphia], University of Pennsylvania [Philadelphia], University of Wisconsin-Madison, Texas Tech University Health Sciences Center, Texas Tech University [Lubbock] (TTU), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - 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CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), New York University [New York] (NYU), NYU System (NYU), Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, New Mexico State University, Pennsylvania State University (Penn State), Penn State System, Princess Margaret Hospital, University of Toronto, Cognition, Langues, Langage, Ergonomie (CLLE-ERSS), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Toulouse - Jean Jaurès (UT2J)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS), J. A. 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(SKLCS), Institute of Software Chinese Academy of Sciences [Beijing], Nanjing University of Information Science and Technology (NUIST), Laboratoire de Chimie - UMR5182 (LC), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon)-Institut de Chimie du CNRS (INC), Johns Hopkins University (JHU), Universidad Nacional Autónoma de México = National Autonomous University of Mexico (UNAM), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), University of Pennsylvania, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), University of Oxford-University of Oxford, University of California (UC)-University of California (UC), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Universidad Autónoma de Madrid (UAM), University of Virginia, Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), University of California [Irvine] (UC Irvine), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Bordeaux Montaigne (UBM)-Centre National de la Recherche Scientifique (CNRS), Carnegie Institution for Science, Institute of Science and Technology [Klosterneuburg, Austria] (IST Austria), Harvard University-Smithsonian Institution, Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), University of Oxford, Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Ahumada R., Prieto C.A., Almeida A., Anders F., Anderson S.F., Andrews B.H., Anguiano B., Arcodia R., Armengaud E., Aubert M., Avila S., Avila-Reese V., Badenes C., Balland C., Barger K., Barrera-Ballesteros J.K., Basu S., Bautista J., Beaton R.L., Beers T.C., Benavides B.I.T., Bender C.F., Bernardi M., Bershady M., Beutler F., Bidin C.M., Bird J., Bizyaev D., Blanc G.A., Blanton M.R., Boquien M., Borissova J., Bovy J., Brandt W.N., Brinkmann J., Brownstein J.R., Bundy K., Bureau M., Burgasser A., Burtin E., Cano-Diaz M., Capasso R., Cappellari M., Carrera R., Chabanier S., Chaplin W., Chapman M., Cherinka B., Chiappini C., Doohyun Choi P., Chojnowski S.D., Chung H., Clerc N., Coffey D., Comerford J.M., Comparat J., Da Costa L., Cousinou M.-C., Covey K., Crane J.D., Cunha K., Ilha G.D.S., Dai Y.S., Damsted S.B., Darling J., Davidson J.W., Davies R., Dawson K., De N., De La Macorra A., De Lee N., Queiroz A.B.D.A., Deconto Machado A., De La Torre S., Dell'Agli F., Du Mas Des Bourboux H., Diamond-Stanic A.M., Dillon S., Donor J., Drory N., Duckworth C., Dwelly T., Ebelke G., Eftekharzadeh S., Davis Eigenbrot A., Elsworth Y.P., Eracleous M., Erfanianfar G., Escoffier S., Fan X., Farr E., Fernandez-Trincado J.G., Feuillet D., Finoguenov A., Fofie P., Fraser-Mckelvie A., Frinchaboy P.M., Fromenteau S., Fu H., Galbany L., Garcia R.A., Garcia-Hernandez D.A., Oehmichen L.A.G., Ge J., Maia M.A.G., Geisler D., Gelfand J., Goddy J., Gonzalez-Perez V., Grabowski K., Green P., Grier C.J., Guo H., Guy J., Harding P., Hasselquist S., Hawken A.J., Hayes C.R., Hearty F., Hekker S., Hogg D.W., Holtzman J.A., Horta D., Hou J., Hsieh B.-C., Huber D., Hunt J.A.S., Chitham J.I., Imig J., Jaber M., Angel C.E.J., Johnson J.A., Jones A.M., Jonsson H., Jullo E., Kim Y., Kinemuchi K., Kirkpatrick Iv C.C., Kite G.W., Klaene M., Kneib J.-P., Kollmeier J.A., Kong H., Kounkel M., Krishnarao D., Lacerna I., Lan T.-W., Lane R.R., Law D.R., Le Goff J.-M., Leung H.W., Lewis H., Li C., Lian J., Lin L., Long D., Longa-Peña P., Lundgren B., Lyke B.W., Ted Mackereth J., Macleod C.L., Majewski S.R., Manchado A., Maraston C., Martini P., Masseron T., Masters K.L., Mathur S., McDermid R.M., Merloni A., Merrifield M., Meszaros S., Miglio A., Minniti D., Minsley R., Miyaji T., Mohammad F.G., Mosser B., Mueller E.-M., Muna D., Muñoz-Gutierrez A., Myers A.D., Nadathur S., Nair P., Nandra K., Do Nascimento J.C., Nevin R.J., Newman J.A., Nidever D.L., Nitschelm C., Noterdaeme P., O'Connell J.E., Olmstead M.D., Oravetz D., Oravetz A., Osorio Y., Pace Z.J., Padilla N., Palanque-Delabrouille N., Palicio P.A., Pan H.-A., Pan K., Parker J., Paviot R., Peirani S., Ramrez K.P., Penny S., Percival W.J., Perez-Fournon I., Perez-Rafols I., Petitjean P., Pieri M.M., Pinsonneault M., Poovelil V.J., Povick J.T., Prakash A., Price-Whelan A.M., Raddick M.J., Raichoor A., Ray A., Rembold S.B., Rezaie M., Riffel R.A., Riffel R., Rix H.-W., Robin A.C., Roman-Lopes A., Roman-Zuñiga C., Rose B., Ross A.J., Rossi G., Rowlands K., Rubin K.H.R., Salvato M., Sanchez A.G., Sanchez-Menguiano L., Sanchez-Gallego J.R., Sayres C., Schaefer A., Schiavon R.P., Schimoia J.S., Schlafly E., Schlegel D., Schneider D.P., Schultheis M., Schwope A., Seo H.-J., Serenelli A., Shafieloo A., Shamsi S.J., Shao Z., Shen S., Shetrone M., Shirley R., Aguirre V.S., Simon J.D., Skrutskie M.F., Slosar A., Smethurst R., Sobeck J., Sodi B.C., Souto D., Stark D.V., Stassun K.G., Steinmetz M., Stello D., Stermer J., Storchi-Bergmann T., Streblyanska A., Stringfellow G.S., Stutz A., Suarez G., Sun J., Taghizadeh-Popp M., Talbot M.S., Tayar J., Thakar A.R., Theriault R., Thomas D., Thomas Z.C., Tinker J., Tojeiro R., Toledo H.H., Tremonti C.A., Troup N.W., Tuttle S., Unda-Sanzana E., Valentini M., Vargas-Gonzalez J., Vargas-Magaña M., Vazquez-Mata J.A., Vivek M., Wake D., Wang Y., Weaver B.A., Weijmans A.-M., Wild V., Wilson J.C., Wilson R.F., Wolthuis N., Wood-Vasey W.M., Yan R., Yang M., Yeche C., Zamora O., Zarrouk P., Zasowski G., Zhang K., Zhao C., Zhao G., Zheng Z., Zhu G., Zou H., Alfred P. Sloan Foundation, and Department of Energy (US)

Subjects
Optical telescopes, SAMPLE, Astrophysics, 01 natural sciences, Astronomi, astrofysik och kosmologi, Infrared astronomy, Observatory, Astronomy, Astrophysics and Cosmology, Astrophysics::Solar and Stellar Astrophysics, REDSHIFT 0.8, redshift surveys, stellar spectral lines, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS, media_common, Astronomy databases, Redshift surveys, Physics, Astrophysics::Instrumentation and Methods for Astrophysics, stellar properties, CATALOG, astro-ph.CO, astronomy databases, Data release, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], infrared astonomy, TELESCOPE, astro-ph.GA, media_common.quotation_subject, Astrophysics::Cosmology and Extragalactic Astrophysics, MASS, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Galactic abundances, Stellar properties, 0103 physical sciences, Astrophysics::Galaxy Astrophysics, DISTANCES, Stellar spectral lines, 010308 nuclear & particles physics, Astronomy and Astrophysics, optical telescopes, 115 Astronomy, Space science, Galaxy, GALAXY, [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], STELLAR, 13. Climate action, Space and Planetary Science, Sky, [SDU]Sciences of the Universe [physics], galactic abundances, MILKY, astro-ph.IM, SDSS-IV MANGA
Abstract

This paper documents the 16th data release (DR16) from the Sloan Digital Sky Surveys (SDSS), the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of data from the Southern Hemisphere survey of the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new data from APOGEE-2 North are also included. DR16 is also notable as the final data release for the main cosmological program of the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), and all raw and reduced spectra from that project are released here. DR16 also includes all the data from the Time Domain Spectroscopic Survey and new data from the SPectroscopic IDentification of ERosita Survey programs, both of which were co-observed on eBOSS plates. DR16 has no new data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey (or the MaNGA Stellar Library "MaStar"). We also preview future SDSS-V operations (due to start in 2020), and summarize plans for the final SDSS-IV data release (DR17)., Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah. The SDSS website is www.sdss.org.

Published
2020

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