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Frontier Fields

Hubble Deep Field Initiative

STScI Newsletter article

HDFI SWG Report 2102

Bauer, A., et al. 2015, MNRAS, 453, 3593 - 2015MNRAS.453.3593B
    "Hydrogen reionization in the Illustris universe"

Zavala, J. A., et al. 2015, MNRAS, 453, L88 - 2015MNRAS.453L..88Z
    "Early science with the Large Millimeter Telescope: dust constraints in a z ˜ 9.6 galaxy"

Boylan-Kolchin, M., et al. 2015, MNRAS, 453, 1503 - 2015MNRAS.453.1503B
    "The Local Group as a time machine: studying the high-redshift Universe with nearby galaxies"

Ciardi, B., et al. 2015, MNRAS, 453, 101 - 2015MNRAS.453..101C
    "Simulating the 21 cm forest detectable with LOFAR and SKA in the spectra of high-z GRBs"

Kaviraj, S., et al. 2015, MNRAS, 452, 2845 - 2015MNRAS.452.2845K
    "Galaxy merger histories and the role of merging in driving star formation at z > 1"

Bowler, R. A. A., et al. 2015, MNRAS, 452, 1817 - 2015MNRAS.452.1817B
    "The galaxy luminosity function at z ≃ 6 and evidence for rapid evolution in the bright end from z ≃ 7 to 5"

Jauzac, M., et al. 2015, MNRAS, 452, 1437 - 2015MNRAS.452.1437J
    "Hubble Frontier Fields: a high-precision strong-lensing analysis of the massive galaxy cluster Abell 2744 using ˜180 multiple images"

Lapi, A., & Danese, L. 2015, JCAP, 9, 003 - 2015JCAP...09..003L
    "Cold or warm? Constraining dark matter with primeval galaxies and cosmic reionization after Planck"

Wang, X., et al. 2015, ApJ, 811, 29 - 2015ApJ...811...29W
    "The Grism Lens-amplified Survey from Space (GLASS). IV. Mass Reconstruction of the Lensing Cluster Abell 2744 from Frontier Field Imaging and GLASS Spectroscopy"

Finkelstein, S. L., et al. 2015, ApJ, 810, 71 - 2015ApJ...810...71F
    "The Evolution of the Galaxy Rest-frame Ultraviolet Luminosity Function over the First Two Billion Years"

Diego, J. M., et al. 2015, MNRAS, 451, 3920 - 2015MNRAS.451.3920D
    "Hubble Frontier Field free-form mass mapping of the massive multiple-merging cluster MACSJ0717.5+3745"

Duncan, K., & Conselice, C. J. 2015, MNRAS, 451, 2030 - 2015MNRAS.451.2030D
    "Powering reionization: assessing the galaxy ionizing photon budget at z < 10"

Shibuya, T., Ouchi, M., & Harikane, Y. 2015, ApJS, 219, 15 - 2015ApJS..219...15S
    "Morphologies of ∼190,000 Galaxies at z = 0–10 Revealed with HST Legacy Data. I. Size Evolution"

McLeod, D. J., et al. 2015, MNRAS, 450, 3032 - 2015MNRAS.450.3032M
    "New redshift z ≃ 9 galaxies in the Hubble Frontier Fields: implications for early evolution of the UV luminosity density"

Oesch, P. A., et al. 2015, ApJ, 808, 104 - 2015ApJ...808..104O
    "First Frontier Field Constraints on the Cosmic Star Formation Rate Density at z ∼ 10—The Impact of Lensing Shear on Completeness of High-redshift Galaxy Samples"

Holwerda, B. W., et al. 2015, ApJ, 808, 6 - 2015ApJ...808....6H
    "The Sizes of Candidate z∼9-10 Galaxies: Confirmation of the Bright CANDELS Sample and Relation with Luminosity and Mass."

O’Shea, B. W., et al. 2015, ApJ, 807, L12 - 2015ApJ...807L..12O
    "Probing the Ultraviolet Luminosity Function of the Earliest Galaxies with the Renaissance Simulations"

Barone-Nugent, R. L., et al. 2015, MNRAS, 450, 1224 - 2015MNRAS.450.1224B
    "The impact of strong gravitational lensing on observed Lyman-break galaxy numbers at 4 ≤ z ≤ 8 in the GOODS and the XDF blank fields"

Smith, A., et al. 2015, MNRAS, 449, 4336 - 2015MNRAS.449.4336S
    "The Lyman α signature of the first galaxies"

Fialkov, A., & Loeb, A. 2015, ApJ, 806, 256 - 2015ApJ...806..256F
    "Distortion of the Luminosity Function of High-redshift Galaxies by Gravitational Lensing"

Dressler, A., et al. 2015, ApJ, 806, 19 - 2015ApJ...806...19D
    "Confirmation of a Steep Luminosity Function for Lyα Emitters at z = 5.7: a Major Component of Reionization"

Merten, J., et al. 2015, ApJ, 806, 4 - 2015ApJ...806....4M
    "CLASH: The Concentration-Mass Relation of Galaxy Clusters"

Morioka, M., & Futamase, T. 2015, ApJ, 805, 184 - 2015ApJ...805..184M
    "Lens Statistics with Gravitationally Lensed yet Morphologically Regular Images"

Diego, J. M., et al. 2015, MNRAS, 449, 588 - 2015MNRAS.449..588D
    "The orthogonally aligned dark halo of an edge-on lensing galaxy in the Hubble Frontier Fields: a challenge for modified gravity"

Zitrin, A., et al. 2015, ApJ, 805, L7 - 2015ApJ...805L...7Z
    "A Pilot Survey for C III] Emission in the Reionization Era: Gravitationally Lensed z ∼ 7–8 Galaxies in the Frontier Fields Cluster Abell 2744"

Mason, C. A., et al. 2015, ApJ, 805, 79 - 2015ApJ...805...79M
    "Correcting the z ∼ 8 Galaxy Luminosity Function for Gravitational Lensing Magnification Bias"

Kawamata, R., et al. 2015, ApJ, 804, 103 - 2015ApJ...804..103K
    "The Sizes of z ∼ 6–8 Lensed Galaxies from the Hubble Frontier Fields Abell 2744 Data"

Oguri, M. 2015, MNRAS, 449, L86 - 2015MNRAS.449L..86O
    "Predicted properties of multiple images of the strongly lensed supernova SN Refsdal"

DeMaio, T., et al. 2015, MNRAS, 448, 1162 - 2015MNRAS.448.1162D
    "On the origin of the intracluster light in massive galaxy clusters"

Schirmer, M., et al. 2015, ApJS, 217, 33 - 2015ApJS..217...33S
    "Gemini Frontier Fields: Wide-field Adaptive Optics Ks-band Imaging of the Galaxy Clusters MACS J0416.1-2403 and Abell 2744"

Robertson, B. E., et al. 2015, ApJ, 802, L19 - 2015ApJ...802L..19R
    "Cosmic Reionization and Early Star-forming Galaxies: A Joint Analysis of New Constraints from Planck and the Hubble Space Telescope"

Kelly, P. L., et al. 2015, Sci, 347, 1123 - 2015Sci...347.1123K
    "Multiple images of a highly magnified supernova formed by an early-type cluster galaxy lens"

Pacucci, F., & Ferrara, A. 2015, MNRAS, 448, 104 - 2015MNRAS.448..104P
    "Simulating the growth of Intermediate Mass Black Holes"

Diego, J. M., et al. 2015, MNRAS, 447, 3130 - 2015MNRAS.447.3130D
    "Free-form lensing implications for the collision of dark matter and gas in the frontier fields cluster MACS J0416.1-2403"

Bayliss, M. B., Sharon, K., & Johnson, T. 2015, ApJ, 802, L9 - 2015ApJ...802L...9B
    "Quantifying the Impact of Cosmological Parameter Uncertainties on Strong-lensing Models with an Eye Toward the Frontier Fields"

Zitrin, A., et al. 2015, ApJ, 801, 44 - 2015ApJ...801...44Z
    "Hubble Space Telescope Combined Strong and Weak Lensing Analysis of the CLASH Sample: Mass and Magnification Models and Systematic Uncertainties"

Huang, X., et al. 2015, ApJ, 801, 12 - 2015ApJ...801...12H
    "CLASH: Extreme Emission-line Galaxies and Their Implication on Selection of High-redshift Galaxies"

Jones, T., et al. 2015, AJ, 149, 107 - 2015AJ....149..107J
    "The Grism Lens-Amplified Survey from Space (GLASS). II. Gas-Phase Metallicity and Radial Gradients in an Interacting System At Z ≃ 2"

Grazian, A., et al. 2015, A&A, 575, A96 - 2015A&A...575A..96G
    "The galaxy stellar mass function at 3.5 ≤z ≤ 7.5 in the CANDELS/UDS, GOODS-South, and HUDF fields"

Laporte, N., et al. 2015, A&A, 575, A92 - 2015A&A...575A..92L
    "Frontier Fields: Combining HST, VLT, and Spitzer data to explore the z ~ 8 Universe behind the lensing cluster MACSJ0416.1-2403"

Jauzac, M., et al. 2015, MNRAS, 446, 4132 - 2015MNRAS.446.4132J
    "Hubble Frontier Fields: the geometry and dynamics of the massive galaxy cluster merger MACSJ0416.1-2403"

Bleem, L. E., et al. 2015, ApJS, 216, 27 - 2015ApJS..216...27B
    "Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-Square-Degree SPT-SZ Survey"

Sharon, K., & Johnson, T. L. 2015, ApJ, 800, L26 - 2015ApJ...800L..26S
    "Revised Lens Model for the Multiply Imaged Lensed Supernova, “SN Refsdal” in MACS J1149+2223"

Coe, D., Bradley, L., & Zitrin, A. 2015, ApJ, 800, 84 - 2015ApJ...800...84C
    "Frontier Fields: High-redshift Predictions and Early Results"

Grillo, C., et al. 2015, ApJ, 800, 38 - 2015ApJ...800...38G
    "CLASH-VLT: Insights on the Mass Substructures in the Frontier Fields Cluster MACS J0416.1–2403 through Accurate Strong Lens Modeling"

Atek, H., et al. 2015, ApJ, 800, 18 - 2015ApJ...800...18A
    "New Constraints on the Faint End of the UV Luminosity Function at z ~ 7-8 Using the Gravitational Lensing of the Hubble Frontier Fields Cluster A2744"

Cooke, R. J., Pettini, M., & Jorgenson, R. A. 2015, ApJ, 800, 12 - 2015ApJ...800...12C
    "The Most Metal-poor Damped Lyα Systems: An Insight into Dwarf Galaxies at High-redshift"

Karman, W., et al. 2015, A&A, 574, A11 - 2015A&A...574A..11K
    "MUSE integral-field spectroscopy towards the Frontier Fields cluster Abell S1063. I. Data products and redshift identifications"

Richard, J., et al. 2015, MNRAS, 446, L16 - 2015MNRAS.446L..16R
    "MUSE observations of the lensing cluster SMACSJ2031.8-4036: new constraints on the mass distribution in the cluster core"

Diego, J. M., et al. 2015, MNRAS, 446, 683 - 2015MNRAS.446..683D
    "A free-form lensing grid solution for A1689 with new multiple images"

Behroozi, P. S., & Silk, J. 2015, ApJ, 799, 32 - 2015ApJ...799...32B
    "A Simple Technique for Predicting High-redshift Galaxy Evolution"

Ishigaki, M., et al. 2015, ApJ, 799, 12 - 2015ApJ...799...12I
    "Hubble Frontier Fields First Complete Cluster Data: Faint Galaxies at z ~ 5-10 for UV Luminosity Functions and Cosmic Reionization"

D'Aloisio, A., Natarajan, P., & Shapiro, P. R. 2014, MNRAS, 445, 3581 - 2014MNRAS.445.3581D
    "The effect of large-scale structure on the magnification of high-redshift sources by cluster lenses"

Stark, D. P., et al. 2014, MNRAS, 445, 3200 - 2014MNRAS.445.3200S
    "Ultraviolet emission lines in young low-mass galaxies at z ≃ 2: physical properties and implications for studies at z > 7"

Dayal, P., et al. 2014, MNRAS, 445, 2545 - 2014MNRAS.445.2545D
    "Essential physics of early galaxy formation"

Lam, D., et al. 2014, ApJ, 797, 98 - 2014ApJ...797...98L
    "A Rigorous Free-form Lens Model of A2744 to Meet the Hubble Frontier Fields Challenge"

Johnson, T. L., et al. 2014, ApJ, 797, 48 - 2014ApJ...797...48J
    "Lens Models and Magnification Maps of the Six Hubble Frontier Fields Clusters"

Robertson, B. E., et al. 2014, ApJ, 796, L27 - 2014ApJ...796L..27R
    "Accounting for Cosmic Variance in Studies of Gravitationally Lensed High-redshift Galaxies in the Hubble Frontier Field Clusters"

Bouwens, R. J., et al. 2014, ApJ, 795, 126 - 2014ApJ...795..126B
    "A Census of Star-forming Galaxies in the Z ~ 9-10 Universe based on HST+Spitzer Observations over 19 Clash Clusters: Three Candidate Z ~ 9-10 Galaxies and Improved Constraints on the Star Formation Rate Density at Z ~ 9.2"

Zheng, W., et al. 2014, ApJ, 795, 93 - 2014ApJ...795...93Z
    "Young Galaxy Candidates in the Hubble Frontier Fields. I. A2744"

Schenker, M. A., et al. 2014, ApJ, 795, 20 - 2014ApJ...795...20S
    "Line-emitting Galaxies beyond a Redshift of 7: An Improved Method for Estimating the Evolving Neutrality of the Intergalactic Medium"

Richard, J., et al. 2014, MNRAS, 444, 268 - 2014MNRAS.444..268R
    "Mass and magnification maps for the Hubble Space Telescope Frontier Fields clusters: implications for high-redshift studies"

Montes, M., & Trujillo, I. 2014, ApJ, 794, 137 - 2014ApJ...794..137M
    "Intracluster Light at the Frontier: A2744"

Bouwens, R. J., et al. 2014, ApJ, 793, 115 - 2014ApJ...793..115B
    "UV-continuum Slopes of >4000 z ~ 4-8 Galaxies from the HUDF/XDF, HUDF09, ERS, CANDELS-South, and CANDELS-North Fields"

Lefor, A. T., & Futamase, T. 2014, A&C, 6, 28 - 2014A&C.....6...28L
    "Comparison of strong gravitational lens model software I. Redshift and model dependence of time delay and mass calculations"

Boylan-Kolchin, M., Bullock, J. S., & Garrison-Kimmel, S. 2014, MNRAS, 443, L44 - 2014MNRAS.443L..44B
    "Near-field limits on the role of faint galaxies in cosmic reionization"

Yue, B., et al. 2014, MNRAS, 443, L20 - 2014MNRAS.443L..20Y
    "Ultra-faint high-redshift galaxies in the Frontier Fields"

Jauzac, M., et al. 2014, MNRAS, 443, 1549 - 2014MNRAS.443.1549J
    "Hubble Frontier Fields: a high-precision strong-lensing analysis of galaxy cluster MACSJ0416.1-2403 using ˜200 multiple images"

Zitrin, A., et al. 2014, ApJ, 793, L12 - 2014ApJ...793L..12Z
    "A Geometrically Supported z ~ 10 Candidate Multiply Imaged by the Hubble Frontier Fields Cluster A2744"

Barone-Nugent, R. L., et al. 2014, ApJ, 793, 17 - 2014ApJ...793...17B
    "Measurement of Galaxy Clustering at z ~ 7.2 and the Evolution of Galaxy Bias from 3.8 < z < 8 in the XDF, GOODS-S, and GOODS-N"

To, C.-H., Wang, W.-H., & Owen, F. N. 2014, ApJ, 792, 139 - 2014ApJ...792..139T
    "Star Formation Rate and Extinction in Faint z ~ 4 Lyman Break Galaxies"

Bradley, L. D., et al. 2014, ApJ, 792, 76 - 2014ApJ...792...76B
    "CLASH: A Census of Magnified Star-forming Galaxies at z ~ 6-8"

Redlich, M., Waizmann, J.-C., & Bartelmann, M. 2014, A&A, 569, A34 - 2014A&A...569A..34R
    "The strongest gravitational lenses. IV. The order statistics of the largest Einstein radii with cluster mergers"

Wise, J. H., et al. 2014, MNRAS, 442, 2560 - 2014MNRAS.442.2560W
    "The birth of a galaxy - III. Propelling reionization with the faintest galaxies"

Schultz, C., et al. 2014, MNRAS, 442, 1597 - 2014MNRAS.442.1597S
    "The high-z universe confronts warm dark matter: Galaxy counts, reionization and the nature of dark matter"

Gruen, D., et al. 2014, MNRAS, 442, 1507 - 2014MNRAS.442.1507G
    "Weak lensing analysis of SZ-selected clusters of galaxies from the SPT and Planck surveys"

Madau, P., & Dickinson, M. 2014, ARA&A, 52, 415 - 2014ARA&A..52..415M
    "Cosmic Star-Formation History"

Rawle, T. D., et al. 2014, MNRAS, 442, 196 - 2014MNRAS.442..196R
    "Star formation in the massive cluster merger Abell 2744"

Zitrin, A., Redlich, M., & Broadhurst, T. 2014, ApJ, 789, 51 - 2014ApJ...789...51Z
    "Consistent Use of Type Ia Supernovae Highly Magnified by Galaxy Clusters to Constrain the Cosmological Parameters"

Chen, C.-C., et al. 2014, ApJ, 789, 12 - 2014ApJ...789...12C
    "SMA Observations on Faint Submillimeter Galaxies with S 850 < 2 mJy: Ultra Dusty Low-luminosity Galaxies at High Redshift"

Rodney, S. A., et al. 2014, AJ, 148, 13 - 2014AJ....148...13R
    "Type Ia Supernova Rate Measurements to Redshift 2.5 from CANDELS: Searching for Prompt Explosions in the Early Universe"

Ryan, R. E., Jr., et al. 2014, ApJ, 786, L4 - 2014ApJ...786L...4R
    "Measuring the Stellar Masses of z ~ 7 Galaxies with the Spitzer UltRaFaint SUrvey Program (SURFS UP)"

Oesch, P. A., et al. 2014, ApJ, 786, 108 - 2014ApJ...786..108O
    "The Most Luminous z ~ 9-10 Galaxy Candidates Yet Found: The Luminosity Function, Cosmic Star-formation Rate, and the First Mass Density Estimate at 500 Myr"

Atek, H., et al. 2014, ApJ, 786, 60 - 2014ApJ...786...60A
    "Probing the z > 6 Universe with the First Hubble Frontier Fields Cluster A2744"

Schmidt, K. B., et al. 2014, ApJ, 786, 57 - 2014ApJ...786...57S
    "The Luminosity Function at z ~ 8 from 97 Y-band Dropouts: Inferences about Reionization"

Patel, B., et al. 2014, ApJ, 786, 9 - 2014ApJ...786....9P
    "Three Gravitationally Lensed Supernovae behind CLASH Galaxy Clusters"

Stanway, E. R., & Davies, L. J. M. 2014, MNRAS, 439, 2474 - 2014MNRAS.439.2474S
    "Establishing an analogue population for the most distant galaxies"

Ebeling, H., Ma, C.-J., & Barrett, E. 2014, ApJS, 211, 21 - 2014ApJS..211...21E
    "Spectroscopic Redshifts of Galaxies within the Frontier Fields"

Bradač, M., et al. 2014, ApJ, 785, 108 - 2014ApJ...785..108B
    "Spitzer Ultra Faint SUrvey Program (SURFS UP). I. An Overview"

Wilkins, S. M., Stanway, E. R., & Bremer, M. N. 2014, MNRAS, 439, 1038 - 2014MNRAS.439.1038W
    "High-redshift galaxies and low-mass stars"

Smit, R., et al. 2014, ApJ, 784, 58 - 2014ApJ...784...58S
    "Evidence for Ubiquitous High-equivalent-width Nebular Emission in z ~ 7 Galaxies: Toward a Clean Measurement of the Specific Star-formation Rate Using a Sample of Bright, Magnified Galaxies"

Vanzella, E., et al. 2014, ApJ, 783, L12 - 2014ApJ...783L..12V
    "Characterizing Faint Galaxies in the Reionization Epoch: LBT Confirms Two L < 0.2 Lsstarf Sources at z = 6.4 Behind the CLASH/Frontier Fields Cluster MACS0717.5+3745"

Bayliss, M. B., et al. 2014, ApJ, 783, 41 - 2014ApJ...783...41B
    "Line-of-sight Structure toward Strong Lensing Galaxy Clusters"

Graur, O., et al. 2014, ApJ, 783, 28 - 2014ApJ...783...28G
    "Type-Ia Supernova Rates to Redshift 2.4 from CLASH: The Cluster Lensing And Supernova Survey with Hubble"

Frederiksen, T. F., et al. 2014, A&A, 563, A140 - 2014A&A...563A.140F
    "Spectroscopic identification of a redshift 1.55 supernova host galaxy from the Subaru Deep Field Supernova Survey"

Lazio, J. W., et al. 2014, PASP, 126, 196 - 2014PASP..126..196L
    "Radio Astronomy in LSST Era"

Monna, A., et al. 2014, MNRAS, 438, 1417 - 2014MNRAS.438.1417M
    "CLASH: z ˜ 6 young galaxy candidate quintuply lensed by the frontier field cluster RXC J2248.7-4431"

Schmidt, K. B., et al. 2014, ApJ, 782, L36 - 2014ApJ...782L..36S
    "Through the Looking GLASS: HST Spectroscopy of Faint Galaxies Lensed by the Frontier Fields Cluster MACSJ0717.5+3745"

Laporte, N., et al. 2014, A&A, 562, L8 - 2014A&A...562L...8L
    "The first Frontier Fields cluster: 4.5 μm excess in a z ~ 8 galaxy candidate in Abell 2744"

Sendra, I., et al. 2014, MNRAS, 437, 2642 - 2014MNRAS.437.2642S
    "Enabling non-parametric strong lensing models to derive reliable cluster mass distributions - WSLAP+"

Alavi, A., et al. 2014, ApJ, 780, 143 - 2014ApJ...780..143A
    "Ultra-faint Ultraviolet Galaxies at z ~ 2 behind the Lensing Cluster A1689: The Luminosity Function, Dust Extinction, and Star Formation Rate Density"

Bromm, V. 2014, MmSAI, 85, 202 - 2014MmSAI..85..202B
    "Metal production and dispersal from the first stars"

Mashian, N., & Loeb, A. 2013, JCAP, 12, 017 - 2013JCAP...12..017M
    "Constraining the minimum luminosity of high redshift galaxies through gravitational lensing"

Muñoz, J. A., & Furlanetto, S. R. 2013, MNRAS, 435, 2676 - 2013MNRAS.435.2676M
    "Molecular cloud properties and CO line emission in z ≳ 6 galaxies"

Sayers, J., et al. 2013, ApJ, 778, 52 - 2013ApJ...778...52S
    "A Measurement of the Kinetic Sunyaev-Zel'dovich Signal Toward MACS J0717.5+3745"

Medezinski, E., et al. 2013, ApJ, 777, 43 - 2013ApJ...777...43M
    "CLASH: Complete Lensing Analysis of the Largest Cosmic Lens MACS J0717.5+3745 and Surrounding Structures"

Balestra, I., et al. 2013, A&A, 559, L9 - 2013A&A...559L...9B
    "CLASH-VLT: spectroscopic confirmation of a z = 6.11 quintuply lensed galaxy in the Frontier Fields cluster RXC J2248.7-4431"

Pacucci, F., Mesinger, A., & Haiman, Z. 2013, MNRAS, 435, L53 - 2013MNRAS.435L..53P
    "Focusing on warm dark matter with lensed high-redshift galaxies"

Pan, T., & Loeb, A. 2013, MNRAS, 435, L33 - 2013MNRAS.435L..33P
    "Finding core-collapse supernovae from the epoch of reionization behind cluster lenses"

Oesch, P. A., et al. 2013, ApJ, 773, 75 - 2013ApJ...773...75O
    "Probing the Dawn of Galaxies at z ~ 9-12: New Constraints from HUDF12/XDF and CANDELS data"

Zitrin, A., et al. 2013, ApJ, 770, L15 - 2013ApJ...770L..15Z
    "A Highly Elongated Prominent Lens at z = 0.87: First Strong-lensing Analysis of El Gordo"

Schenker, M. A., et al. 2013, ApJ, 768, 196 - 2013ApJ...768..196S
    "The UV Luminosity Function of Star-forming Galaxies via Dropout Selection at Redshifts z ~ 7 and 8 from the 2012 Ultra Deep Field Campaign"

Robertson, B. E., et al. 2013, ApJ, 768, 71 - 2013ApJ...768...71R
    "New Constraints on Cosmic Reionization from the 2012 Hubble Ultra Deep Field Campaign"