Celebrating 30 years of science from the James Clerk Maxwell Telescope by Ian Robson, Wayne S. Holland, Per Friberg

“…The James Clerk Maxwell Telescope (JCMT) has been the world’s most successful single-dish telescope at submillimetre wavelengths since it began operations in 1987. …”
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HARPACSIS: A submillimetre spectral imaging system on the James Clerk Maxwell Telescope by Buckle, J, Hills, R, Smith, H, Dent, W, Bell, G, Curtis, E, Dace, R, Gibson, H, Graves, S, Leech, J, Richer, J, Williamson, R, Withington, S, Yassin, G, Bennett, R, Hastings, P, Laidlaw, I, Lightfoot, J, Burgess, T, Dewdney, P, Hovey, G, Willis, A, Redman, R, Wooff, B, Berry, D

“…This paper describes a new Heterodyne Array Receiver Program (HARP) and Auto-Correlation Spectral Imaging System (ACSIS) that have recently been installed and commissioned on the James Clerk Maxwell Telescope. The 16-element focal-plane array receiver, operating in the submillimetre from 325 to 375 GHz, offers high (three-dimensional) mapping speeds, along with significant improvements over single-detector counterparts in calibration and image quality. …”

HARP/ACSIS: A submillimetre spectral imaging system on the James Clerk Maxwell Telescope by Buckle, J, Hills, R, Smith, H, Dent, W, Bell, G, Curtis, E, Dace, R, Gibson, H, Graves, S, Leech, J, Richer, J, Williamson, R, Withington, S, Yassin, G, Bennett, R, Hastings, P, Laidlaw, I, Lightfoot, J, Burgess, T, Dewdney, P, Hovey, G, Willis, A, Redman, R, Wooff, B, Berry, D

“…This paper describes a new Heterodyne Array Receiver Programme (HARP) and Auto-Correlation Spectral Imaging System (ACSIS) that have recently been installed and commissioned on the James Clerk Maxwell Telescope (JCMT). The 16-element focal-plane array receiver, operating in the submillimetre from 325 to 375 GHz, offers high (three-dimensional) mapping speeds, along with significant improvements over single-detector counterparts in calibration and image quality. …”

The James Clerk Maxwell Telescope Legacy Survey of Nearby Star-forming Regions in the Gould Belt by Ward-Thompson, D, Francesco, J, Hatchell, J, Hogerheijde, MR, Bastien, P, Basu, S, Bonnell, I, Bowey, J, Brunt, C, Buckle, J, Butner, H, Cavanagh, B, Chrysostomou, A, Curtis, E, Davis, C, Dent, W, Dishoeck, E, Edmunds, MG, Fich, M, Fiege, J, Fissel, L, Friberg, P, Friesen, R, Frieswijk, W, Fuller, G

“…This paper describes a James Clerk Maxwell Telescope (JCMT) legacy survey that has been awarded roughly 500 hrs of observing time to be carried out from 2007 to 2009. …”

Clump-scale Gas Infall in High-mass Star Formation: A Multitransition View with James Clerk Maxwell Telescope HCN (4–3) Mapping by Fengwei Xu, Ke Wang, Yuxin He, Jingwen Wu, Lei Zhu, Diego Mardones

“…In this study, we present the results of an HCN (4–3) mapping survey conducted with the James Clerk Maxwell Telescope, toward 38 massive clumps exhibiting blue profiles in HCO ^+ (3–2). …”
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The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey - IX. (CO)-C-12 J=3 -> 2 observations of NGC 2976 and NGC 3351 by Tan, B, Leech, J, Rigopoulou, D, Warren, B, Wilson, C, Attewell, D, Azimlu, M, Bendo, G, Butner, H, Brinks, E, Chanial, P, Clements, D, Heesen, V, Israel, F, Knapen, J, Matthews, H, Mortier, A, Muehle, S, Sanchez-Gallego, JR, Tilanus, R, Usero, A, van der Werf, P, Zhu, M

“…We present 12CO J = 3→2 maps of NGC 2976 and NGC 3351 obtained with the James Clerk Maxwell Telescope (JCMT), both early targets of the JCMT Nearby Galaxy Legacy Survey (NGLS). …”

SIS focal plane imaging array for 350 GHz by Leech, J, Withington, S, Yassin, G

“…When attached to the James Clerk Maxwell Telescope in Hawaii the array will offer greatly improved mapping speeds of extended objects complementing existing bolometer detectors and planned millimetre wave aperture synthesis telescopes. …”

Design of a 350 GHz circular waveguide superconductor-insulator-superconductor mixer for array applications by Tan, B, Wenninger, J, Kittara, P, Noptosporn, P, Jaroenjittichai, P, Singwong, D, Bernete, IG, Chaumont, C, Boussaha, F

“…The mixer is designed to operate from 275–375 GHz, covering a similar frequency range to the HARP-B receiver of the James Clerk Maxwell Telescope. Each antenna probe is connected to a separate but identical mixer circuit comprising three SIS junctions connected in series to reduce the parasitic capacitance, and the relevant tuning circuits and RF chokes. …”

The initial conditions of isolated star formation - X. A suggested evolutionary diagram for pre-stellar cores by Simpson, R, Johnstone, D, Nutter, D, Ward-Thompson, D, Whitworth, A

“…We propose an evolutionary path for pre-stellar cores on the radius-mass diagram, which is analogous to stellar evolutionary paths on the Hertzsprung-Russell diagram. Using James Clerk Maxwell Telescope (JCMT) observations of L1688 in the Ophiuchus star-forming complex, we analyse the HCO + (J= 4 → 3) spectral line profiles of pre-stellar cores. …”

The HASHTAG Project: the first submillimeter images of the Andromeda galaxy from the ground by Smith, WL, Eales, SA, Williams, TG, Bureau, M, Rigopoulou, D

“…Using this technique, we are carrying out the HARP and SCUBA-2 High Resolution Terahertz Andromeda Galaxy Survey (HASHTAG), an international Large Program on the James Clerk Maxwell Telescope, with one aim being to produce the first high-fidelity high-resolution submillimeter images of Andromeda. …”

The JCMT Nearby Galaxies Legacy Survey - VIII. CO data and the L CO(3-2)-L FIR correlation in the SINGS sample by Wilson, C, Warren, B, Israel, F, Serjeant, S, Attewell, D, Bendo, G, Butner, H, Chanial, P, Clements, D, Golding, J, Heesen, V, Irwin, J, Leech, J, Matthews, H, Mühle, S, Mortier, A, Petitpas, G, Sánchez-Gallego, JR, Sinukoff, E, Shorten, K, Tan, B, Tilanus, R, Usero, A, Vaccari, M, Wiegert, T

“…The James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey (NGLS) comprises an Hi-selected sample of 155 galaxies spanning all morphological types with distances less than 25Mpc. …”

High-redshift radio galaxies and quasars at sub-millimetre wavelengths: assessing their evolutionary status by Hughes, D, Dunlop, J, Rawlings, S

“…The observations were made at 800$\mu m$, using the single-element bolometer UKT14 on the James Clerk Maxwell Telescope (JCMT), reaching a typical r.m.s. sensitivity of $\sigma_{rms} \sim 4$ mJy and represent some of the deepest submillimetre extragalactic measurements made to date. …”

The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- II. Submillimetre maps, catalogue and number counts by Coppin, K, Chapin, E, Mortier, A, Scott, SE, Borys, C, Dunlop, J, Halpern, M, Hughes, D, Pope, A, Scott, D, Serjeant, S, Wagg, J, Alexander, D, Almaini, O, Aretxaga, I, Babbedge, T, Best, P, Blain, A, Chapman, S, Clements, D, Crawford, M, Dunne, L, Eales, SA, Edge, A, Farrah, D

“…Using the Submillimetre Common-User Bolometer Array (SCUBA) on the James Clerk Maxwell Telescope (JCMT), SHADES mapped two separate regions of sky: the Subaru/XMM-Newton Deep Field (SXDF) and the Lockman Hole East (LH). …”

Extreme jet ejections from the black hole X-ray binary V404 Cygni by Tetarenko, A, Sivakoff, G, Miller-Jones, J, Rosolowsky, E, Petitpas, G, Gurwell, M, Wouterloot, J, Fender, R, Heinz, S, Maitra, D, Markoff, S, Migliari, S, Rupen, M, Rushton, A, Russell, D, Russell, T, Sarazin, C

“…Our 4 h long set of overlapping observations with the Very Large Array, the Sub-millimeter Array and the James Clerk Maxwell Telescope (SCUBA-2) covers eight different frequency bands (including the first detection of aBHXBjet at 666 GHz/450 μm), providing an unprecedented multifrequency view of the extraordinary flaring activity seen during this period of the outburst. …”

Development of 230 GHz finline SIS mixers for next-generation large array receivers and HARP instrument upgrade by Liu, K-Y, Tan, B-K, Wang, M-J, Kittara, P, Singwong, D, Janphuang, P, Ho, P, Chen, M-T, Rujopakarn, W, Pen, U-L, Fuller, GA, Liu, J, Jiang, X-J, Boussaha, F, Chaumont, C, Chen, T-J, Chang, Y-P, Lu, W-C, Chiu, C-P, Larkaew, C, Kriettisak, N, Jiang, L, Wang, Y, Wang, Y-J, Bell, G, Peña-Herazo, HA, Mizuno, I, Li, S, Oliveira, RN, Cookson, J, Bintley, D

“… In pursuit of advancing large array receiver capabilities and enhancing the 16-element Heterodyne Array Receiver Program (HARP) instrument on the James Clerk Maxwell Telescope (JCMT), we have successfully fabricated 230 GHz finline superconductor-insulator-superconductor (SIS) mixers. …”

The Magnetic Fields of Starburst Galaxies. I. Identification and Characterization of the Thermal Polarization in the Galactic Disk and Outflow by Enrique Lopez-Rodriguez

“…We present a comprehensive study of the B-fields in three nearby (3.5–17.2 Mpc) starbursts (M82, NGC 253, and NGC 2146) at 5 pc–1.5 kpc resolutions using publicly available 53–890 μ m imaging polarimetric observations with Stratospheric Observatory for Infrared Astronomy/HAWC+, James Clerk Maxwell Telescope/POL-2, and ALMA. We find that the polarized spectral energy distributions (SEDs) of the full galaxies are dominated by the polarized SEDs of the outflows with dust temperatures of ${T}_{{\rm{d}},\mathrm{outflow}}^{\mathrm{PI}}\sim 45$ K and an emissive index of ${\beta }_{\mathrm{outflow}}^{\mathrm{PI}}\sim 2.3$ . …”
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AzTEC Half Square Degree Survey of the SHADES Fields -- I. Maps, Catalogues, and Source Counts by Austermann, J, Dunlop, J, Perera, T, Scott, K, Wilson, G, Aretxaga, I, Hughes, D, Almaini, O, Chapin, E, Chapman, S, Cirasuolo, M, Clements, D, Coppin, K, Dunne, L, Dye, S, Eales, SA, Egami, E, Farrah, D, Ferrusca, D, Flynn, S, Haig, D, Halpern, M, Ibar, E, Ivison, R, Kampen, E

“…These results are derived from maps covering over 0.7 deg^2, made at 1.1mm, using the AzTEC continuum camera mounted on the James Clerk Maxwell Telescope. The maps were made in the two fields originally targeted at 0.85mm with SCUBA in the SHADES project, namely the Lockman Hole East (mapped to a depth of 0.9-1.3 mJy rms) and the Subaru XMM Deep Field (1.0-1.7 mJy rms). …”

The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450um-selected galaxies and their contribution to the cosmic infrared background by Geach, J, Chapin, E, Coppin, K, Dunlop, J, Halpern, M, Smail, I, Werf, P, Serjeant, S, Farrah, D, Roseboom, I, Targett, T, Arumugam, V, Asboth, V, Blain, A, Chrysostomou, A, Clarke, C, Ivison, R, Jones, S, Karim, A, Mackenzie, T, Meijerink, R, Michalowski, M, Scott, D, Simpson, J, Swinbank, A

“…The first deep blank-field 450um map (1-sigma~1.3mJy) from the SCUBA-2 Cosmology Legacy Survey (S2CLS), conducted with the James Clerk Maxwell Telescope (JCMT) is presented. Our map covers 140 arcmin^2 of the COSMOS field, in the footprint of the HST CANDELS area. …”

WISDOM project – XVIII. Molecular gas distributions and kinematics of three megamaser galaxies by Liang, F-H, Smith, MD, Bureau, M, Gao, F, Davis, TA, Cappellari, M, Elford, JS, Greene, JE, Iguchi, S, Lelli, F, Lu, A, Ruffa, I, Williams, TG, Zhang, H

“…¹²CO (2–1) and ¹²CO (3–2) observations with the James Clerk Maxwell Telescope are compared with the ALMA observations. …”

RESOLVING THE INNER JET STRUCTURE OF 1924-292 WITH THE EVENT HORIZON TELESCOPE by Fish, Vincent L., Weintroub, Jonathan, Bower, Geoffrey C., Freund, Robert, Friberg, Per, Ho, Paul T. P., Honma, Mareki, Inoue, Makoto, Krichbaum, Thomas P., Marrone, Daniel P., Moran, James M., Oyama, Tomoaki, Plambeck, Richard, Primiani, Rurik, Shen, Zhi-Qiang, Tilanus, Remo P. J., Wright, Melvyn, Young, Ken H., Ziurys, Lucy M., Zensus, J. Anton, Lu, Rusen, Doeleman, Sheperd Samuel

“…The model image of the quasar 1924-292 was obtained with four telescopes at three observatories: the James Clerk Maxwell Telescope on Mauna Kea in Hawaii, the Arizona Radio Observatory's Submillimeter Telescope in Arizona, and two telescopes of the Combined Array for Research in Millimeter-wave Astronomy in California in 2009 April. …”
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