Search Publications
One-dimensional delayed-detonation models of Type Ia supernovae: confrontation to observations at bolometric maximum
Hillier, D. John; Dessart, Luc; Blondin, Stéphane +1 more
The delayed-detonation explosion mechanism applied to a Chandrasekhar-mass white dwarf offers a very attractive model to explain the inferred characteristics of Type Ia supernovae (SNe Ia). The resulting ejecta are chemically stratified, have the same mass and roughly the same asymptotic kinetic energy, but exhibit a range in 56Ni mass.…
Massive starburst galaxies in a z = 2.16 proto-cluster unveiled by panoramic Hα mapping
Smail, Ian; Koyama, Yusei; Kodama, Tadayuki +5 more
We present a panoramic narrow-band study of Hα emitters in the field of the z = 2.16 proto-cluster around PKS 1138-262 using MOIRCS on the Subaru Telescope. We find 83 Hα emitters down to a star formation rate of SFR (Hα) ∼ 10 M⊙ yr-1 across a ∼ 7 × 7 arcmin2 region centred on the radio galaxy, and identify ∼10-Mpc…
The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450-µm-selected galaxies and their contribution to the cosmic infrared background
Ivison, R. J.; Clements, D. L.; Smail, Ian +50 more
The first deep blank-field 450 µm map (1σ ≈ 1.3 mJy) from the Submillimetre Common-User Bolometer Array-2 SCUBA-2 Cosmology Legacy Survey (S2CLS), conducted with the James Clerk Maxwell Telescope (JCMT) is presented. Our map covers 140 arcmin2 of the Cosmological Evolution Survey field, in the footprint of the Hubble Space Telesco…
Peanuts at an angle: detecting and measuring the three-dimensional structure of bars in moderately inclined galaxies
Debattista, Victor P.; Erwin, Peter
We show that direct detection and measurement of the vertically thickened parts of bars (so-called `boxy' or `peanut-shaped' bulges) are possible not only for edge-on galaxies but also for galaxies with moderate inclinations (i < 70°), and that examples are relatively common in the nearby Universe. The analysis of a sample of 78 nearby, moderat…
The origin of the lag spectra observed in AGN: Reverberation and the propagation of X-ray source fluctuations
Fabian, A. C.; Wilkins, D. R.
The X-ray emission from active galactic nuclei (AGN) is highly variable. Measurements of time lags (characterized by lag spectra) between variability in the light curves in energy bands corresponding to directly observed continuum emission from the corona around the black hole and to X-rays reflected from the accretion disc add a further dimension…
The closest look at 1H0707-495: X-ray reverberation lags with 1.3 Ms of data
Fabian, A. C.; Steiner, J. F.; Uttley, P. +4 more
Reverberation lags in active galactic nuclei (AGN) were first discovered in the NLS1 galaxy, 1H0707-495. We present a follow-up analysis using 1.3 Ms of data, which allows for the closest ever look at the reverberation signature of this remarkable source. We confirm previous findings of a hard lag of ∼100 s at frequencies ν ∼ [0.5-4] × 10-4
HST hot Jupiter transmission spectral survey: detection of water in HAT-P-1b from WFC3 near-IR spatial scan observations
Aigrain, S.; Pont, F.; Fortney, J. J. +13 more
We present Hubble Space Telescope near-infrared transmission spectroscopy of the transiting hot-Jupiter HAT-P-1b. We observed one transit with Wide Field Camera 3 using the G141 low-resolution grism to cover the wavelength range 1.087-1.678 µm. These time series observations were taken with the newly available spatial-scan mode that increase…
Candidate type II quasars at 2 < z < 4.3 in the Sloan Digital Sky Survey III
Brandt, W. N.; Petitjean, Patrick; Ross, Nicholas P. +12 more
At low redshifts, dust-obscured quasars often have strong yet narrow permitted lines in the rest-frame optical and ultraviolet, excited by the central active nucleus, earning the designation type II quasars. We present a sample of 145 candidate type II quasars at redshifts between 2 and 4.3, encompassing the epoch at which quasar activity peaked i…
First results from the Herschel Gould Belt Survey in Taurus
Abergel, A.; Bernard, J. -P.; Hill, T. +26 more
The whole of the Taurus region (a total area of 52 deg2) has been observed by the Herschel Spectral and Photometric Imaging Receiver (SPIRE) and Photodetector Array Camera and Spectrometer (PACS) instruments at wavelengths of 70, 160, 250, 350 and 500 µm as part of the Herschel Gould Belt Survey. In this paper we present the first…
Constraining globular cluster formation through studies of young massive clusters - I. A lack of ongoing star formation within young clusters
Cabrera-Ziri, I.; Bastian, N.; Larsen, S. S. +1 more
We present a survey of 130 Galactic and extragalactic young massive clusters (YMCs, 104 < M/M⊙ < 108, 10 < t/Myr < 1000) with integrated spectroscopy or resolved stellar photometry (40 presented here and 90 from the literature) and use the sample to search for evidence of ongoing star formation within t…