output
19932026
most citedThe Gaia mission

7.1k citations

Showing 2015 · astro-ph.GAShow all

39 papers · 2 filters

astro-ph.GA2015★ 32 cited

Evidence for a chemically differentiated outflow in Mrk 231

J. E. Lindberg, S. Aalto, S. Muller +7

Aims: Our goal is to study the chemical composition of the outflows of active galactic nuclei and starburst galaxies. Methods: We obtained high-resolution interferometric observati…

astro-ph.GA2015★ 13 cited

The XXL Survey XI: ATCA 2.1 GHz continuum observations

Vernesa Smolcic, Jacinta Delhaize, Minh Huynh +16

We present 2.1 GHz imaging with the Australia Telescope Compact Array (ATCA) of a 6.5 deg^2 region within the XXM-Newton XXL South field using a band of 1.1-3.1 GHz. We achieve an…

astro-ph.GA2015★ 90 cited

The interstellar chemistry of H2C3O isomers

Jean-Christophe Loison, Marcelino Agúndez, Núria Marcelino +6

We present the detection of two H2C3O isomers, propynal and cyclopropenone, toward various starless cores and molecular clouds, together with upper limits for the third isomer prop…

astro-ph.GA2015★ 117 cited

Very-high-energy gamma-rays from the Universe's middle age: detection of the z=0.940 blazar PKS 1441+25 with MAGIC

MAGIC Collaboration, M. L. Ahnen, S. Ansoldi +246

The flat-spectrum radio quasar PKS 1441+25 at a redshift of z = 0.940 is detected between 40 and 250 GeV with a significance of 25.5 σ using the MAGIC telescopes. Together with the…

astro-ph.GA2015★ 26 cited

The Planck-ATCA Co-eval Observations (PACO) project: analysis of radio source properties between 5 and 217 GHz

Marcella Massardi, Anna Bonaldi, Laura Bonavera +3

The Planck-ATCA Co-eval Observations (PACO) project has yielded observations of 464 sources with the Australia Telescope Compact Array (ATCA) between 4.5 and 40 GHz. The main purpo…

astro-ph.GA2015★ 3 cited

The Lockman Hole with LOFAR - Searching for GPS and CSS sources at low frequencies

Elizabeth K. Mahony, Raffaella Morganti, Isabella Prandoni +1

The Lockman Hole Project is a wide international collaboration aimed at exploiting the multi-band extensive and deep information available for the Lockman Hole region, with the aim…

astro-ph.GA2015★ 75 cited

X-ray high-resolution spectroscopy reveals feedback in a Seyfert galaxy from an ultra fast wind with complex ionization and velocity structure

Anna Lia Longinotti, Yair Krongold, Matteo Guainazzi +5

Winds outflowing from Active Galactic Nuclei (AGNs) may carry significant amount of mass and energy out to their host galaxies. In this paper we report the detection of a sub-relat…

astro-ph.GA2015★ 92 cited

The VIMOS Public Extragalactic Redshift Survey (VIPERS). Environmental effects shaping the galaxy stellar mass function

I. Davidzon, O. Cucciati, M. Bolzonella +38

We exploit the first public data release of VIPERS to investigate environmental effects in galaxy evolution between and . The large number of spectroscopic redshift…

astro-ph.GA2015★ 66 cited

Radio properties of Compact Steep Spectrum and GHz-Peaked Spectrum radio sources

M. Orienti

Compact steep spectrum (CSS) and GHz-peaked spectrum (GPS) radio sources represent a large fraction of the extragalactic objects in flux density-limited samples. They are compact,…

astro-ph.GA2015★ 18 cited

ALMA Probes the Molecular Gas Reservoirs in the Changing-Look Seyfert Galaxy Mrk 590

J. Y. Koay, M. Vestergaard, V. Casasola +2

We investigate if the active galactic nucleus (AGN) of Mrk 590, whose supermassive black hole was until recently highly accreting, is turning off due to a lack of central gas to fu…

astro-ph.GA2015★ 1 cited

A possible link between high rotation measure and CSS-GPS sources

Alice Pasetto, Alex Kraus, Karl-Heinz Mack +2

We report here the study, in the radio band, of a sample of candidates of high Rotation Measure (RM). The point-like objects (at kpc scale) were selected by choosing unpolarised so…

astro-ph.GA2015★ 21 cited

A study of a sample of high rotation measure AGNs through multifrequency single dish observations

Alice Pasetto, Alex Kraus, Karl-Heinz Mack +2

We characterised and studied, in the radio band, a sample of candidates of high Rotation Measure (RM). These point-like objects show a strong depolarisation at 21cm. This feature s…

astro-ph.GA2015★ 28 cited

The new class of FR0 radio galaxies

Ranieri D. Baldi, Alessandro Capetti, Gabriele Giovannini

Are the FRI and FRII radio galaxies representative of the radio-loud (RL) AGN population in the local Universe? Recent studies on the local low-luminosity radio sources cast lights…

astro-ph.GA2015★ 1 cited

Fast outflows in broad absorption line quasars and their connection with CSS/GPS sources

G. Bruni, K. -H. Mack, F. M. Montenegro-Montes +2

Broad absorption line quasars are among the objects presenting the fastest outflows. The launching mechanism itself is not completely understood. Models in which they could be laun…

astro-ph.GA2015★ 28 cited

AGN duty cycle estimates for the ultra-steep spectrum radio relic VLSS J1431.8+1331

A. Shulevski, R. Morganti, P. D. Barthel +19

Steep spectrum radio sources associated with active galactic nuclei (AGN) may contain remnants of past AGN activity episodes. Novel instruments like the LOw Frequency ARray (LOFAR)…

astro-ph.GA2015★ 35 cited

Wide-field LOFAR imaging of the field around the double-double radio galaxy B1834+620: A fresh view on a restarted AGN and doubeltjes

E. Orrú, S. van Velzen, R. F. Pizzo +8

The existence of double-double radio galaxies (DDRGs) is evidence for recurrent jet activity in AGN, as expected from standard accretion models. A detailed study of these rare sour…

astro-ph.GA2015★ 40 cited

A multiwavelength view of the galaxy cluster Abell 523 and its peculiar diffuse radio source

M. Girardi, W. Boschin, F. Gastaldello +7

We study the structure of the galaxy cluster Abell 523 (A523) at z=0.104 using new spectroscopic data for 132 galaxies acquired at the Telescopio Nazionale Galileo, new photometric…

astro-ph.GA2015★ 125 cited

Velocity-resolved [CII] emission and [CII]/FIR Mapping along Orion with Herschel

J. R. Goicoechea, D. Teyssier, M. Etxaluze +22

We present the first 7.5'x11.5' velocity-resolved map of the [CII]158um line toward the Orion molecular cloud-1 (OMC-1) taken with the Herschel/HIFI instrument. In combination with…

astro-ph.GA2015★ 22 cited

(Sub)millimetre interferometric imaging of a sample of COSMOS/AzTEC submillimetre galaxies - II. The spatial extent of the radio-emitting regions

Oskari Miettinen, Mladen Novak, Vernesa Smolčić +9

Radio emission at cm wavelengths from highly star-forming galaxies, such as SMGs, is dominated by synchrotron radiation arising from supernova activity. Using deep, high-resolution…

astro-ph.GA2015★ 14 cited

The faint radio source population at 15.7 GHz - II. Multi-wavelength properties

I. H. Whittam, J. M. Riley, D. A. Green +2

A complete, flux density limited sample of 96 faint ( mJy) radio sources is selected from the 10C survey at 15.7 GHz in the Lockman Hole. We have matched this sample to a ra…

astro-ph.GA2015★ 23 cited

HELP : The Herschel Extragalactic Legacy Project & The Coming of Age of Multi-Wavelength Astrophysics

Mattia Vaccari, The HELP Consortium

How did galaxies form and evolve? This is one of the most challenging questions in astronomy today. Answering it requires a careful combination of observational and theoretical wor…

astro-ph.GA2015★ 7 cited

Far-UV to mid-IR properties of nearby radio galaxies

Hans R. de Ruiter, Paola Parma, Roberto Fanti +1

We investigate whether the far-UV continuum of nearby radio galaxies reveals evidence for the presence of star forming or non-stellar components. If a UV excess due to an extra rad…

astro-ph.GA2015★ 23 cited

Gas-phase oxygen abundances and radial metallicity gradients in the two nearby spiral galaxies NGC7793 and NGC4945

Letizia Stanghellini, Laura Magrini, Viviana Casasola

Gas-phase abundances in HII regions of two spiral galaxies, NGC7793 and NGC4945, have been studied to determine their radial metallicity gradients. We used the strong-line method t…

astro-ph.GA2015★ 41 cited

Filaments in the Lupus molecular clouds

M. Benedettini, E. Schisano, S. Pezzuto +19

We have studied the filaments extracted from the column density maps of the nearby Lupus 1, 3, and 4 molecular clouds, derived from photometric maps observed with the Herschel sate…