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The JCMT Nearby Galaxies Legacy Survey - VIII. CO data and the LCO(3-2)-LFIR correlation in the SINGS sample

Monthly Notices of the Royal Astronomical Society 424:4 (2012) 3050-3080

Authors:

CD Wilson, BE Warren, FP Israel, S Serjeant, D Attewell, GJ Bendo, HM Butner, P Chanial, DL Clements, J Golding, V Heesen, J Irwin, J Leech, HE Matthews, S Mühle, AMJ Mortier, G Petitpas, JR Sánchez-Gallego, E Sinukoff, K Shorten, BK Tan, RPJ Tilanus, A Usero, M Vaccari, T Wiegert, M Zhu, DM Alexander, P Alexander, M Azimlu, P Barmby, R Brar, C Bridge, E Brinks, S Brooks, K Coppin, S Côté, P Côté, S Courteau, J Davies, S Eales, M Fich, M Hudson, DH Hughes, RJ Ivison, JH Knapen, M Page, TJ Parkin, D Rigopoulou, E Rosolowsky, ER Seaquist, K Spekkens, N Tanvir, JM van der Hulst, P van der Werf, C Vlahakis, TM Webb, B Weferling, GJ White

Abstract:

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. We describe the scientific goals of the survey, the sample selection and the observing strategy. We also present an atlas and analysis of the CO J=3 - 2 maps for the 47 galaxies in the NGLS which are also part of the Spitzer Infrared Nearby Galaxies Survey. We find a wide range of molecular gas mass fractions in the galaxies in this sample and explore the correlation of the far-infrared luminosity, which traces star formation, with the CO luminosity, which traces the molecular gas mass. By comparing the NGLS data with merging galaxies at low and high redshift, which have also been observed in the CO J=3 - 2 line, we show that the correlation of far-infrared and CO luminosity shows a significant trend with luminosity. This trend is consistent with a molecular gas depletion time which is more than an order of magnitude faster in the merger galaxies than in nearby normal galaxies. We also find a strong correlation of the LFIR/LCO(3-2) ratio with the atomic-to-molecular gas mass ratio. This correlation suggests that some of the far-infrared emission originates from dust associated with atomic gas and that its contribution is particularly important in galaxies where most of the gas is in the atomic phase. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS.
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The Atlas3D project - XV. Benchmark for early-type galaxies scaling relations from 260 dynamical models: mass-to-light ratio, dark matter, Fundamental Plane and Mass Plane

(2012)

Authors:

Michele Cappellari, Nicholas Scott, Katherine Alatalo, Leo Blitz, Maxime Bois, Frederic Bournaud, M Bureau, Alison F Crocker, Roger L Davies, Timothy A Davis, PT de Zeeuw, Pierre-Alain Duc, Eric Emsellem, Sadegh Khochfar, Davor Krajnovic, Harald Kuntschner, Richard M McDermid, Raffaella Morganti, Thorsten Naab, Tom Oosterloo, Marc Sarzi, Paolo Serra, Anne-Marie Weijmans, Lisa M Young
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The Atlas3D project - XX. Mass-size and mass-sigma distributions of early-type galaxies: bulge fraction drives kinematics, mass-to-light ratio, molecular gas fraction and stellar initial mass function

(2012)

Authors:

Michele Cappellari, Richard M McDermid, Katherine Alatalo, Leo Blitz, Maxime Bois, Frederic Bournaud, M Bureau, Alison F Crocker, Roger L Davies, Timothy A Davis, PT de Zeeuw, Pierre-Alain Duc, Eric Emsellem, Sadegh Khochfar, Davor Krajnovic, Harald Kuntschner, Raffaella Morganti, Thorsten Naab, Tom Oosterloo, Marc Sarzi, Nicholas Scott, Paolo Serra, Anne-Marie Weijmans, Lisa M Young
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Publisher’s Note: Observable signatures of extreme mass-ratio inspiral black hole binaries embedded in thin accretion disks [Phys. Rev. D 84, 024032 (2011)]

Physical Review D American Physical Society (APS) 86:4 (2012) 049907

Authors:

Bence Kocsis, Nicolas Yunes, Abraham Loeb
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The Herschel Multi-tiered Extragalactic Survey: HerMES

Monthly Notices of the Royal Astronomical Society 424:3 (2012) 1614-1635

Authors:

SJ Oliver, J Bock, B Altieri, A Amblard, V Arumugam, H Aussel, T Babbedge, A Beelen, M Béthermin, A Blain, A Boselli, C Bridge, D Brisbin, V Buat, D Burgarella, N Castro-Rodríguez, A Cava, P Chanial, M Cirasuolo, DL Clements, A Conley, L Conversi, A Cooray, CD Dowell, EN Dubois, E Dwek, S Dye, S Eales, D Elbaz, D Farrah, A Feltre, P Ferrero, N Fiolet, M Fox, A Franceschini, W Gear, E Giovannoli, J Glenn, Y Gong, EA González Solares, M Griffin, M Halpern, M Harwit, E Hatziminaoglou, S Heinis, P Hurley, HS Hwang, A Hyde, E Ibar, O Ilbert, K Isaak, RJ Ivison, G Lagache, E Le Floc'h, L Levenson, BL Faro, N Lu, S Madden, B Maffei, G Magdis, G Mainetti, L Marchetti, G Marsden, J Marshall, AMJ Mortier, HT Nguyen, B O'Halloran, A Omont, MJ Page, P Panuzzo, A Papageorgiou, H Patel, CP Pearson, I Pérez-Fournon, M Pohlen, JI Rawlings, G Raymond, D Rigopoulou, L Riguccini, D Rizzo, G Rodighiero, IG Roseboom, M Rowan-Robinson, M Sánchez Portal, B Schulz, D Scott, N Seymour, DL Shupe, AJ Smith, JA Stevens, M Symeonidis, M Trichas, KE Tugwell, M Vaccari, I Valtchanov, JD Vieira, M Viero, L Vigroux, L Wang, R Ward

Abstract:

The Herschel Multi-tiered Extragalactic Survey (HerMES) is a legacy programme designed to map a set of nested fields totalling ~380deg2. Fields range in size from 0.01 to ~20deg2, using the Herschel-Spectral and Photometric Imaging Receiver (SPIRE) (at 250, 350 and 500μm) and the Herschel-Photodetector Array Camera and Spectrometer (PACS) (at 100 and 160μm), with an additional wider component of 270deg2 with SPIRE alone. These bands cover the peak of the redshifted thermal spectral energy distribution from interstellar dust and thus capture the reprocessed optical and ultraviolet radiation from star formation that has been absorbed by dust, and are critical for forming a complete multiwavelength understanding of galaxy formation and evolution. The survey will detect of the order of 100000 galaxies at 5σ in some of the best-studied fields in the sky. Additionally, HerMES is closely coordinated with the PACS Evolutionary Probe survey. Making maximum use of the full spectrum of ancillary data, from radio to X-ray wavelengths, it is designed to facilitate redshift determination, rapidly identify unusual objects and understand the relationships between thermal emission from dust and other processes. Scientific questions HerMES will be used to answer include the total infrared emission of galaxies, the evolution of the luminosity function, the clustering properties of dusty galaxies and the properties of populations of galaxies which lie below the confusion limit through lensing and statistical techniques. This paper defines the survey observations and data products, outlines the primary scientific goals of the HerMES team, and reviews some of the early results. © 2012 The Authors. Monthly Notices of the Royal Astronomical Society © 2012 RAS.
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