Search Publications
The Herschel census of infrared SEDs through cosmic time
Berta, S.; Magnelli, B.; Nordon, R. +57 more
Using Herschel data from the deepest SPIRE and PACS surveys (HerMES and PEP) in COSMOS, GOODS-S and GOODS-N, we examine the dust properties of infrared (IR)-luminous (LIR > 1010 L⊙) galaxies at 0.1 < z < 2 and determine how these evolve with cosmic time. The unique angle of this work is the rigorous analys…
Dust and star formation properties of a complete sample of local galaxies drawn from the Planck Early Release Compact Source Catalogue
Baccigalupi, C.; Bonavera, L.; Clements, D. L. +16 more
We combine Planck High Frequency Instrument data at 857, 545, 353 and 217 GHz with data from Wide-field Infrared Survey Explorer (WISE), Spitzer, IRAS and Herschel to investigate the properties of a well-defined, flux-limited sample of local star-forming galaxies. A 545 GHz flux density limit was chosen so that the sample is 80 per cent complete a…
The dusty aftermath of the V1309 Sco binary merger.
Udalski, A.; Pietrukowicz, P.; Poleski, R. +9 more
We present mid-IR photometry and spectra of the merged binary V1309 Sco taken between 18 and 23 months after outburst. Strong mid-IR emission and a solid-state absorption feature indicate the presence of a significant amount of dust in the circumstellar environment. The absence of detectable mid-IR emission before the outburst suggests that this d…
The ring nebula around the blue supergiant SBW1: pre-explosion snapshot of an SN 1987A twin
Filippenko, Alexei V.; Smith, Nathan; Ginsburg, Adam +2 more
SBW1 is a B-type supergiant surrounded by a ring nebula that is a nearby twin of SN 1987A's progenitor and its circumstellar ring. We present images and spectra of SBW1 obtained with the Hubble Space Telescope (HST), the Spitzer Space Telescope and Gemini South. HST images of SBW1 do not exhibit long Rayleigh-Taylor (RT) fingers, which are presume…
On the hadronic γ-ray emission from tycho's supernova remnant.
Zhang, X.; Chen, Y.; Li, H. +1 more
Hadronic γ-ray emission from supernova remnants (SNRs) is an important tool to test shock acceleration of cosmic-ray protons. Tycho is one of nearly a dozen Galactic SNRs which are suggested to emit hadronic γ-ray emission. Among them, however, it is the only one in which the hadronic emission is proposed to arise from the interaction with a low-d…
The NGC 3341 minor merger: a panchromatic view of the active galactic nucleus in a dwarf companion
Fiore, Fabrizio; Mathur, Smita; Bianchi, Stefano +4 more
We present X-ray (Chandra), radio (Expanded Very Large Array and European VLBI Network) and archival optical data of the triple-merging system in NGC 3341. Our panchromatic analysis confirms the presence of a Seyfert 2 active galactic nucleus (AGN) in NGC 3341B, one of the secondary dwarf companions. On the other hand, the nucleus of the primary g…
Variable dust formation by the colliding-wind Wolf-Rayet system HD 36402 in the Large Magellanic Cloud
Gruendl, R. A.; Chu, Y. -H.; Guerrero, M. A. +1 more
Infrared photometry of the probable triple WC4(+O?)+O8I: Wolf-Rayet system HD 36402 (= BAT99-38) in the Large Magellanic Cloud shows emission characteristic of heated dust. The dust emission is variable on a time-scale of years, with a period near 4.7 yr, possibly associated with orbital motion of the O8 supergiant and the inner P ≃ 3.03-d WC4+O b…
A family of cometary globules at the periphery of Cyg OB1: the star HBHA 3703-01 and the reflection nebula GM 2-39
Lozinskaya, T. A.; Arkhipova, V. P.; Egorov, O. V. +7 more
The interstellar medium in the region of a family of cometary globules including the reflection nebula GM 2-39 has been analysed based on our observations with a slit spectrograph, the results of our previous observations with a Fabry-Perot interferometer in the Hα line and Spitzer archival data (Hora et al.), together with CO microwave data (Leun…
Investigation of dust properties of the proto-planetary nebula IRAS 18276-1431
Maud, L. T.; Izumiura, H.; Murakawa, K. +1 more
We investigate the circumstellar dust properties of the oxygen-rich bipolar proto-planetary nebula (PPN) IRAS 18276-1431 by means of two-dimensional radiative transfer simulations of the circumstellar dust shell. The model geometry is assumed to have a torus and an envelope which consists of a pair of bipolar lobes and a spherical asymptotic giant…
Detection of Hα emission from z > 3.5 submillimetre luminous galaxies with AKARI-FUHYU spectroscopy
Oyabu, Shinki; Smail, Ian; Pearson, Chris +9 more
We present tentative Hα emission line detections of four submillimetre-detected galaxies at z > 3.5: the radio galaxies 8C1909+722 and 4C60.07 at signal-to-noise ratios (SNRs) of 3.1 and 2.5, and two submillimetre-selected galaxies (SMGs) near the first of these at SNRs of 10.0 and 2.4, made with the AKARI space telescope as part of the Follow-…