Hintze Centre for Astrophysical Surveys

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SN 2015bn: a detailed multi-wavelength view of a nearby superluminous supernova

(2016)

Authors:

M Nicholl, E Berger, SJ Smartt, R Margutti, A Kamble, KD Alexander, T-W Chen, C Inserra, I Arcavi, PK Blanchard, R Cartier, KC Chambers, MJ Childress, R Chornock, PS Cowperthwaite, M Drout, HA Flewelling, M Fraser, A Gal-Yam, L Galbany, J Harmanen, TW-S Holoien, G Hosseinzadeh, DA Howell, ME Huber, A Jerkstrand, E Kankare, CS Kochanek, Z-Y Lin, R Lunnan, EA Magnier, K Maguire, C McCully, M McDonald, BD Metzger, D Milisavljevic, A Mitra, T Reynolds, J Saario, BJ Shappee, KW Smith, S Valenti, VA Villar, C Waters, DR Young
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The type Iax supernova, SN 2015H: a white dwarf deflagration candidate

(2016)

Authors:

MR Magee, R Kotak, SA Sim, M Kromer, D Rabinowitz, SJ Smartt, C Baltay, HC Campbell, T-W Chen, M Fink, A Gal-Yam, L Galbany, W Hillebrandt, C Inserra, E Kankare, L Le Guillou, JD Lyman, K Maguire, R Pakmor, FK Röpke, AJ Ruiter, IR Seitenzahl, M Sullivan, S Valenti, DR Young
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Furiously Fast and Red: Sub-second Optical Flaring in V404 Cyg during the 2015 Outburst Peak

(2016)

Authors:

P Gandhi, SP Littlefair, LK Hardy, VS Dhillon, TR Marsh, AW Shaw, D Altamirano, MD Caballero-Garcia, J Casares, P Casella, AJ Castro-Tirado, PA Charles, Y Dallilar, S Eikenberry, RP Fender, RI Hynes, C Knigge, E Kuulkers, K Mooley, T Muñoz-Darias, M Pahari, F Rahoui, DM Russell, JV Hernández Santisteban, T Shahbaz, DM Terndrup, J Tomsick, DJ Walton
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A pilot ASKAP survey of radio transient events in the region around the intermittent pulsar PSR J1107−5907

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 456:4 (2016) 3948-3960

Authors:

G Hobbs, I Heywood, ME Bell, M Kerr, A Rowlinson, S Johnston, RM Shannon, MA Voronkov, C Ward, J Banyer, PJ Hancock, Tara Murphy, JR Allison, SW Amy, L Ball, K Bannister, DC-J Bock, D Brodrick, M Brothers, AJ Brown, JD Bunton, J Chapman, AP Chippendale, Y Chung, D DeBoer, P Diamond, PG Edwards, R Ekers, RH Ferris, R Forsyth, R Gough, A Grancea, N Gupta, L Harvey-Smith, S Hay, DB Hayman, AW Hotan, S Hoyle, B Humphreys, B Indermuehle, CE Jacka, CA Jackson, S Jackson, K Jeganathan, J Joseph, R Kendall, D Kiraly, B Koribalski, M Leach, E Lenc, A MacLeod, S Mader, M Marquarding, J Marvil, N McClure-Griffiths, D McConnell, P Mirtschin, S Neuhold, A Ng, RP Norris, J O'Sullivan, S Pearce, CJ Phillips, A Popping, RY Qiao, JE Reynolds, P Roberts, RJ Sault, AET Schinckel, P Serra, R Shaw, TW Shimwell, M Storey, AW Sweetnam, A Tzioumis, T Westmeier, M Whiting, CD Wilson
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KROSS: Mapping the Ha emission across the star-formation sequence at z~1

Monthly Notices Of The Royal Astronomical Society Oxford University Press 456:4 (2016) 4533-4541

Authors:

Georgios E Magdis, Martin Bureau, JP Stott, A Tiley, AM Swinbank, R Bower, AJ Bunker, Matthew Jarvis, H Johnson, R Sharples

Abstract:

We present first results from the KMOS Redshift One Spectroscopic Survey (KROSS), an ongoing large kinematical survey of a thousand, z~1 star forming galaxies, with VLT KMOS. Out of the targeted galaxies (~500 so far), we detect and spatially resolve Ha emission in ~90% and 77% of the sample respectively. Based on the integrated Ha flux measurements and the spatially resolved maps we derive a median star formation rate (SFR) of ~7.0 Msun/yr and a median physical size of = 5.1kpc. We combine the inferred SFRs and effective radii measurements to derive the star formation surface densities ({\Sigma}SFR) and present a "resolved" version of the star formation main sequence (MS) that appears to hold at sub-galactic scales, with similar slope and scatter as the one inferred from galaxy integrated properties. Our data also yield a trend between {\Sigma}SFR and {\Delta}(sSFR) (distance from the MS) suggesting that galaxies with higher sSFR are characterised by denser star formation activity. Similarly, we find evidence for an anti-correlation between the gas phase metallicity (Z) and the {\Delta}(sSFR), suggesting a 0.2dex variation in the metal content of galaxies within the MS and significantly lower metallicities for galaxies above it. The origin of the observed trends between {\Sigma}SFR - {\Sigma}(sSFR) and Z - {\Delta}(sSFR) could be driven by an interplay between variations of the gas fraction or the star formation efficiency of the galaxies along and off the MS. To address this, follow-up observations of the our sample that will allow gas mass estimates are necessary.
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