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Title: SDSS-IV/MaNGA: Spectrophotometric calibration technique

Abstract

Mapping Nearby Galaxies at Apache Point Observatory (MaNGA), one of three core programs in the Sloan Digital Sky Survey-IV, is an integral-field spectroscopic survey of roughly 10,000 nearby galaxies. It employs dithered observations using 17 hexagonal bundles of 2'' fibers to obtain resolved spectroscopy over a wide wavelength range of 3600-10300 Å. To map the internal variations within each galaxy, we need to perform accurate spectral surface photometry, which is to calibrate the specific intensity at every spatial location sampled by each individual aperture element of the integral field unit. The calibration must correct only for the flux loss due to atmospheric throughput and the instrument response, but not for losses due to the finite geometry of the fiber aperture. This then requires the use of standard star measurements to strictly separate these two flux loss factors (throughput versus geometry), a difficult challenge with standard single-fiber spectroscopy techniques due to various practical limitations. Thus, we developed a technique for spectral surface photometry using multiple small fiber-bundles targeting standard stars simultaneously with galaxy observations. We discuss the principles of our approach and how they compare to previous efforts, and we demonstrate the precision and accuracy achieved. MaNGA's relative calibration between themore » wavelengths of Hα and Hβ has an rms of 1.7%, while that between [N ii] λ6583 and [O ii] λ3727 has an rms of 4.7%. In using extinction-corrected star formation rates and gas-phase metallicities as an illustration, this level of precision guarantees that flux calibration errors will be sub-dominant when estimating these quantities. The absolute calibration is better than 5% for more than 89% of MaNGA's wavelength range.« less

Authors:
 [1];  [2];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [2];  [12];  [13];  [10];  [1];  [14];  [15];  [16] more »;  [17];  [1] « less
+ Show Author Affiliations
  1. Univ. of Kentucky, Lexington, KY (United States). Dept. of Physics and Astronomy
  2. Univ. of Wisconsin, Madison, WI (United States). Dept. of Astronomy
  3. Space Telescope Science Inst., Baltimore, MD (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Physics Division
  5. Univ. of Tokyo (Japan). Kavli IPMU (WPI)
  6. Univ. of Texas, Austin, TX (United States). Dept. of Astronomy
  7. Univ. of Washington, Seattle, WA (United States). Dept. of Astronomy
  8. Apache Point Observatory, Sunspot, NM (United States); Moscow State Univ., Moscow (Russian Federation). Sternberg Astronomical Inst.
  9. Univ. of Chile, Santiago (Chile). Dept. of Astronomy; Center for Astrophysics and Related Technologies (CATA), Santiago (Chile); Observatories of the Carnegie Inst. for Science, Pasadena, CA (United States)
  10. New York Univ. (NYU), NY (United States). Center for Cosmology and Particle Physics
  11. Univ. of Toronto, ON (Canada). Dunlap Inst. for Astronomy and Astrophysics
  12. Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences
  13. Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Astronomy
  14. National Autonomous Univ. of Mexico (Mexico). Inst. of Astronomy
  15. Univ. of Wisconsin, Madison, WI (United States). Dept. of Astronomy; Open Univ., Milton Keynes (United Kingdom). Dept. of Physical Sciences
  16. Univ. of St. Andrews, Scotland (United Kingdom). School of Physics and Astronomy
  17. Shanghai Astronomical Observatory (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1378987
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
The Astronomical Journal (Online)
Additional Journal Information:
Journal Name: The Astronomical Journal (Online); Journal Volume: 151; Journal Issue: 1; Journal ID: ISSN 1538-3881
Publisher:
IOP Publishing - AAAS
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; atmospheric effects; methods: observational; surveys; techniques: imaging spectroscopy

Citation Formats

Yan, Renbin, Tremonti, Christy, Bershady, Matthew A., Law, David R., Schlegel, David J., Bundy, Kevin, Drory, Niv, MacDonald, Nicholas, Bizyaev, Dmitry, Blanc, Guillermo A., Blanton, Michael R., Cherinka, Brian, Eigenbrot, Arthur, Gunn, James E., Harding, Paul, Hogg, David W., Sánchez-Gallego, José R., Sánchez, Sebastian F., Wake, David A., Weijmans, Anne-Marie, Xiao, Ting, and Zhang, Kai. SDSS-IV/MaNGA: Spectrophotometric calibration technique. United States: N. p., 2015. Web. doi:10.3847/0004-6256/151/1/8.
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Yan, Renbin, Tremonti, Christy, Bershady, Matthew A., Law, David R., Schlegel, David J., Bundy, Kevin, Drory, Niv, MacDonald, Nicholas, Bizyaev, Dmitry, Blanc, Guillermo A., Blanton, Michael R., Cherinka, Brian, Eigenbrot, Arthur, Gunn, James E., Harding, Paul, Hogg, David W., Sánchez-Gallego, José R., Sánchez, Sebastian F., Wake, David A., Weijmans, Anne-Marie, Xiao, Ting, & Zhang, Kai. SDSS-IV/MaNGA: Spectrophotometric calibration technique. United States. https://doi.org/10.3847/0004-6256/151/1/8
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Yan, Renbin, Tremonti, Christy, Bershady, Matthew A., Law, David R., Schlegel, David J., Bundy, Kevin, Drory, Niv, MacDonald, Nicholas, Bizyaev, Dmitry, Blanc, Guillermo A., Blanton, Michael R., Cherinka, Brian, Eigenbrot, Arthur, Gunn, James E., Harding, Paul, Hogg, David W., Sánchez-Gallego, José R., Sánchez, Sebastian F., Wake, David A., Weijmans, Anne-Marie, Xiao, Ting, and Zhang, Kai. Mon . "SDSS-IV/MaNGA: Spectrophotometric calibration technique". United States. https://doi.org/10.3847/0004-6256/151/1/8. https://www.osti.gov/servlets/purl/1378987.
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@article{osti_1378987,
title = {SDSS-IV/MaNGA: Spectrophotometric calibration technique},
author = {Yan, Renbin and Tremonti, Christy and Bershady, Matthew A. and Law, David R. and Schlegel, David J. and Bundy, Kevin and Drory, Niv and MacDonald, Nicholas and Bizyaev, Dmitry and Blanc, Guillermo A. and Blanton, Michael R. and Cherinka, Brian and Eigenbrot, Arthur and Gunn, James E. and Harding, Paul and Hogg, David W. and Sánchez-Gallego, José R. and Sánchez, Sebastian F. and Wake, David A. and Weijmans, Anne-Marie and Xiao, Ting and Zhang, Kai},
abstractNote = {Mapping Nearby Galaxies at Apache Point Observatory (MaNGA), one of three core programs in the Sloan Digital Sky Survey-IV, is an integral-field spectroscopic survey of roughly 10,000 nearby galaxies. It employs dithered observations using 17 hexagonal bundles of 2'' fibers to obtain resolved spectroscopy over a wide wavelength range of 3600-10300 Å. To map the internal variations within each galaxy, we need to perform accurate spectral surface photometry, which is to calibrate the specific intensity at every spatial location sampled by each individual aperture element of the integral field unit. The calibration must correct only for the flux loss due to atmospheric throughput and the instrument response, but not for losses due to the finite geometry of the fiber aperture. This then requires the use of standard star measurements to strictly separate these two flux loss factors (throughput versus geometry), a difficult challenge with standard single-fiber spectroscopy techniques due to various practical limitations. Thus, we developed a technique for spectral surface photometry using multiple small fiber-bundles targeting standard stars simultaneously with galaxy observations. We discuss the principles of our approach and how they compare to previous efforts, and we demonstrate the precision and accuracy achieved. MaNGA's relative calibration between the wavelengths of Hα and Hβ has an rms of 1.7%, while that between [N ii] λ6583 and [O ii] λ3727 has an rms of 4.7%. In using extinction-corrected star formation rates and gas-phase metallicities as an illustration, this level of precision guarantees that flux calibration errors will be sub-dominant when estimating these quantities. The absolute calibration is better than 5% for more than 89% of MaNGA's wavelength range.},
doi = {10.3847/0004-6256/151/1/8},
journal = {The Astronomical Journal (Online)},
number = 1,
volume = 151,
place = {United States},
year = {Mon Dec 21 00:00:00 EST 2015},
month = {Mon Dec 21 00:00:00 EST 2015}
}
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    • Durazo, R.; Hernandez, X.; Cervantes Sodi, B.
    • The Astrophysical Journal, Vol. 863, Issue 1
    • DOI: 10.3847/1538-4357/aacf97

    What Determines the Local Metallicity of Galaxies: Global Stellar Mass, Local Stellar Mass Surface Density, or Star Formation Rate?
    journal, November 2018

    Anomalously Low-metallicity Regions in MaNGA Star-forming Galaxies: Accretion Caught in Action?
    journal, February 2019

    • Hwang, Hsiang-Chih; Barrera-Ballesteros, Jorge K.; Heckman, Timothy M.
    • The Astrophysical Journal, Vol. 872, Issue 2
    • DOI: 10.3847/1538-4357/aaf7a3

    SDSS-IV MaNGA: Inside-out versus Outside-in Quenching of Galaxies in Different Local Environments
    journal, February 2019

    Interpreting the Star Formation–Extinction Relation with MaNGA
    journal, February 2019

    Alignment between Filaments and Galaxy Spins from the MaNGA Integral-field Survey
    journal, May 2019

    • Krolewski, Alex; Ho, Shirley; Chen, Yen-Chi
    • The Astrophysical Journal, Vol. 876, Issue 1
    • DOI: 10.3847/1538-4357/ab1010

    On the Elevation and Suppression of Star Formation within Galaxies
    journal, June 2019

    • Wang, Enci; Lilly, Simon J.; Pezzulli, Gabriele
    • The Astrophysical Journal, Vol. 877, Issue 2
    • DOI: 10.3847/1538-4357/ab1c5b

    Signatures of Stellar Accretion in MaNGA Early-type Galaxies
    journal, July 2019

    • Oyarzún, Grecco A.; Bundy, Kevin; Westfall, Kyle B.
    • The Astrophysical Journal, Vol. 880, Issue 2
    • DOI: 10.3847/1538-4357/ab297c

    Resolved and Integrated Stellar Masses in the SDSS-iv/MaNGA Survey. I. PCA Spectral Fitting and Stellar Mass-to-light Ratio Estimates
    journal, September 2019

    • Pace, Zachary J.; Tremonti, Christy; Chen, Yanmei
    • The Astrophysical Journal, Vol. 883, Issue 1
    • DOI: 10.3847/1538-4357/ab3723

    Resolved and Integrated Stellar Masses in the SDSS-IV/MaNGA Survey. II. Applications of PCA-based Stellar Mass Estimates
    journal, September 2019

    • Pace, Zachary J.; Tremonti, Christy; Chen, Yanmei
    • The Astrophysical Journal, Vol. 883, Issue 1
    • DOI: 10.3847/1538-4357/ab3726

    SDSS-IV MaStar: A Large and Comprehensive Empirical Stellar Spectral Library—First Release
    journal, October 2019

    The Correlated Variations of ${\rm{C}}\,{\rm{IV}}$ Narrow Absorption Lines and Quasar Continuum
    journal, June 2018

    • Chen, Zhi-Fu; Pang, Ting-Ting; He, Bing
    • The Astrophysical Journal Supplement Series, Vol. 236, Issue 2
    • DOI: 10.3847/1538-4365/aabcd4

    Narrow C iv Absorption Lines with Multi-epoch Observations
    journal, December 2018

    • Chen, Zhi-Fu; Yao, Min; Pang, Ting-Ting
    • The Astrophysical Journal Supplement Series, Vol. 239, Issue 2
    • DOI: 10.3847/1538-4365/aaeac3

    The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA-derived Quantities, Data Visualization Tools, and Stellar Library
    journal, January 2019

    • Aguado, D. S.; Ahumada, Romina; Almeida, Andrés
    • The Astrophysical Journal Supplement Series, Vol. 240, Issue 2
    • DOI: 10.3847/1538-4365/aaf651

    Spatially Resolved Studies of Local Massive Red Spiral Galaxies
    journal, September 2019

    SDSS IV MaNGA - Spatially resolved diagnostic diagrams: A proof that many galaxies are LIERs
    text, January 2016

    • Belfiore, Francesco; Maiolino, Roberto; Maraston, Claudia
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.317

    Mildly suppressed star formation in central regions of MaNGA Seyfert galaxies
    text, January 2019

    • Bing, L.; Shi, Y.; Chen, Y.
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.33990

    SDSS-IV MaNGA: Inside-out versus Outside-in Quenching of Galaxies in Different Local Environments
    text, January 2019

    • Lin, L.; Hsieh, Bc; Pan, Ha
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.51823

    SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies
    text, January 2018

    • Belfiore, F.; Maiolino, Roberto; Bundy, K.
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.33392

    Widespread star formation inside galactic outflows
    text, January 2019

    • Gallagher, R.; Maiolino, Roberto; Belfiore, F.
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.36663

    Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
    text, January 2017

    • Blanton, Mr; Bershady, Ma; Abolfathi, B.
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.25008

    SDSS IV MaNGA – metallicity and nitrogen abundance gradients in local galaxies
    text, January 2017

    • Belfiore, Francesco; Maiolino, Roberto; Tremonti, C.
    • Apollo - University of Cambridge Repository
    • DOI: 10.17863/cam.10966

    SDSS IV MaNGA - Spatially resolved diagnostic diagrams: A proof that many galaxies are LIERs
    text, January 2016

    SDSS IV MaNGA: The global and local stellar mass assemby histories of galaxies
    text, January 2016

    Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
    text, January 2017

    SDSS IV MaNGA - sSFR profiles and the slow quenching of discs in green valley galaxies
    text, January 2017

    SDSS-IV MaNGA: The Spatially Resolved Stellar Initial Mass Function in $\sim$400 Early-Type Galaxies
    text, January 2018

    The first 62 AGN observed with SDSS-IV MaNGA - II: resolved stellar populations
    text, January 2018

    SDSS IV MaNGA - An archaeological view of the Cosmic Star Formation History
    text, January 2018

    SDSS-IV MaNGA: Signatures of halo assembly in kinematically misaligned galaxies
    text, January 2018

    SDSS-IV MaNGA: local and global chemical abundance patterns in early-type galaxies
    text, January 2018

    Marvin: A Toolkit for Streamlined Access and Visualization of the SDSS-IV MaNGA Data Set
    text, January 2018

    The Data Analysis Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey: Overview
    text, January 2019

    Precessing winds from the nucleus of the prototype Red Geyser?
    text, January 2019

    The first 62 AGN observed with SDSS-IV MaNGA - IV: gas excitation and star-formation rate distributions
    text, January 2019

    What drives the velocity dispersion of ionized gas in star-forming galaxies?
    text, January 2019

    SDSS-IV MaNGA: Effects of Morphology in the global and local Star Formation Main Sequences
    text, January 2019

    Post-Starburst Galaxies in SDSS-IV MaNGA
    text, January 2019

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