A NEW POPULATION OF HIGH-z, DUSTY Ly{alpha} EMITTERS AND BLOBS DISCOVERED BY WISE: FEEDBACK CAUGHT IN THE ACT?

Bridge, Carrie R.; Blain, Andrew; Borys, Colin J. K.; Griffith, Roger L.; Tsai, Chao-Wei; Petty, Sara; Farrah, Duncan; Benford, Dominic; Eisenhardt, Peter; Stern, Daniel; Jingwen, Wu; Jarrett, Tom; Lonsdale, Carol; Stanford, Spencer A.

doi:10.1088/0004-637X/769/2/91

Title: A NEW POPULATION OF HIGH-z, DUSTY Ly{alpha} EMITTERS AND BLOBS DISCOVERED BY WISE: FEEDBACK CAUGHT IN THE ACT?

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Abstract

By combining data from the NASA Wide-field Infrared Survey Explorer (WISE) mission with optical spectroscopy from the W. M. Keck telescope, we discover a mid-IR color criterion that yields a 78% success rate in identifying rare, typically radio-quiet, 1.6 {approx}< z {approx}< 4.6 dusty Ly{alpha} emitters (LAEs). Of these, at least 37% have emission extended on scales of 30-100 kpc and are considered Ly{alpha} ''blobs'' (LABs). The objects have a surface density of only {approx}0.1 deg{sup -2}, making them rare enough that they have been largely missed in deep, small area surveys. We measured spectroscopic redshifts for 92 of these galaxies, and find that the LAEs (LABs) have a median redshift of 2.3 (2.5). The WISE photometry coupled with data from Herschel (Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA) reveals that these galaxies are in the Hyper Luminous IR galaxy regime (L{sub IR} {approx}> 10{sup 13}-10{sup 14} L{sub Sun }) and have warm colors. They are typically more luminous and warmer than other dusty, z {approx} 2 populations such as submillimeter-selected galaxies and dust-obscured galaxies. These traits are commonly associated with the dust being illuminated bymore »« less

Authors:

Bridge, Carrie R. ^[1]; Blain, Andrew ^[2]; Borys, Colin J. K.; Griffith, Roger L.; Tsai, Chao-Wei ^[3]; Petty, Sara; Farrah, Duncan ^[4]; Benford, Dominic ^[5]; Eisenhardt, Peter; Stern, Daniel; Jingwen, Wu ^[6]; Jarrett, Tom ^[7]; Lonsdale, Carol ^[8]; Stanford, Spencer A. ^[9]

California Institute of Technology, MS249-17, Pasadena, CA 91125 (United States)
Department of Physics and Astronomy, University of Leicester, LE1 7RH Leicester (United Kingdom)
Infrared Processing and Analysis Center, California Institute of Technology, MS 100-22, Pasadena, CA 91125 (United States)
Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 (United States)
NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109 (United States)
Astronomy Department, University of Cape Town, Rondebosch 7701 (South Africa)
National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States)
Department of Physics, University of California Davis, One Shields Ave., Davis, CA 95616 (United States)

Publication Date:: Sat Jun 01 00:00:00 EDT 2013

OSTI Identifier:: 22126592

Resource Type:: Journal Article

Journal Name:: Astrophysical Journal

Additional Journal Information:: Journal Volume: 769; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COLOR; DENSITY; DUSTS; EMISSION; FEEDBACK; GALAXIES; INFRARED SURVEYS; NASA; PHOTOMETRY; RED SHIFT; SPACE; SPECTROSCOPY; SURFACES; TELESCOPES

Citation Formats


                    Bridge, Carrie R., Blain, Andrew, Borys, Colin J. K., Griffith, Roger L., Tsai, Chao-Wei, Petty, Sara, Farrah, Duncan, Benford, Dominic, Eisenhardt, Peter, Stern, Daniel, Jingwen, Wu, Jarrett, Tom, Lonsdale, Carol, Stanford, Spencer A., and Wright, Edward L., E-mail: bridge@astro.caltech.edu. A NEW POPULATION OF HIGH-z, DUSTY Ly{alpha} EMITTERS AND BLOBS DISCOVERED BY WISE: FEEDBACK CAUGHT IN THE ACT?.  United States: N. p., 2013. 
        Web.  doi:10.1088/0004-637X/769/2/91.

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                    Bridge, Carrie R., Blain, Andrew, Borys, Colin J. K., Griffith, Roger L., Tsai, Chao-Wei, Petty, Sara, Farrah, Duncan, Benford, Dominic, Eisenhardt, Peter, Stern, Daniel, Jingwen, Wu, Jarrett, Tom, Lonsdale, Carol, Stanford, Spencer A., & Wright, Edward L., E-mail: bridge@astro.caltech.edu. A NEW POPULATION OF HIGH-z, DUSTY Ly{alpha} EMITTERS AND BLOBS DISCOVERED BY WISE: FEEDBACK CAUGHT IN THE ACT?.  United States.  https://doi.org/10.1088/0004-637X/769/2/91

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                    Bridge, Carrie R., Blain, Andrew, Borys, Colin J. K., Griffith, Roger L., Tsai, Chao-Wei, Petty, Sara, Farrah, Duncan, Benford, Dominic, Eisenhardt, Peter, Stern, Daniel, Jingwen, Wu, Jarrett, Tom, Lonsdale, Carol, Stanford, Spencer A., and Wright, Edward L., E-mail: bridge@astro.caltech.edu. 2013.  
        "A NEW POPULATION OF HIGH-z, DUSTY Ly{alpha} EMITTERS AND BLOBS DISCOVERED BY WISE: FEEDBACK CAUGHT IN THE ACT?".  United States.  https://doi.org/10.1088/0004-637X/769/2/91.

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@article{osti_22126592,

  title        = {A NEW POPULATION OF HIGH-z, DUSTY Ly{alpha} EMITTERS AND BLOBS DISCOVERED BY WISE: FEEDBACK CAUGHT IN THE ACT?},

  author       = {Bridge, Carrie R. and Blain, Andrew and Borys, Colin J. K. and Griffith, Roger L. and Tsai, Chao-Wei and Petty, Sara and Farrah, Duncan and Benford, Dominic and Eisenhardt, Peter and Stern, Daniel and Jingwen, Wu and Jarrett, Tom and Lonsdale, Carol and Stanford, Spencer A. and Wright, Edward L., E-mail: bridge@astro.caltech.edu},

  abstractNote = {By combining data from the NASA Wide-field Infrared Survey Explorer (WISE) mission with optical spectroscopy from the W. M. Keck telescope, we discover a mid-IR color criterion that yields a 78% success rate in identifying rare, typically radio-quiet, 1.6 {approx}< z {approx}< 4.6 dusty Ly{alpha} emitters (LAEs). Of these, at least 37% have emission extended on scales of 30-100 kpc and are considered Ly{alpha} ''blobs'' (LABs). The objects have a surface density of only {approx}0.1 deg{sup -2}, making them rare enough that they have been largely missed in deep, small area surveys. We measured spectroscopic redshifts for 92 of these galaxies, and find that the LAEs (LABs) have a median redshift of 2.3 (2.5). The WISE photometry coupled with data from Herschel (Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA) reveals that these galaxies are in the Hyper Luminous IR galaxy regime (L{sub IR} {approx}> 10{sup 13}-10{sup 14} L{sub Sun }) and have warm colors. They are typically more luminous and warmer than other dusty, z {approx} 2 populations such as submillimeter-selected galaxies and dust-obscured galaxies. These traits are commonly associated with the dust being illuminated by intense active galactic nucleus activity. We hypothesize that the combination of spatially extended Ly{alpha}, large amounts of warm IR-luminous dust, and rarity (implying a short-lived phase) can be explained if the galaxies are undergoing brief, intense ''feedback'' transforming them from an extreme dusty starburst/QSO into a mature galaxy.},

  doi          = {10.1088/0004-637X/769/2/91},

  url          = {https://www.osti.gov/biblio/22126592},
  journal      = {Astrophysical Journal},

  issn         = {0004-637X},

  number       = 2,

  volume       = 769,

  place        = {United States},

  year         = {Sat Jun 01 00:00:00 EDT 2013},

  month        = {Sat Jun 01 00:00:00 EDT 2013}

}

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