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16 papers · 2 filters
J1234+3901: an extremely metal-deficient compact star-forming dwarf galaxy at redshift 0.133
Y. I. Izotov, T. X. Thuan, N. G. Guseva
We have obtained optical spectroscopy of one of the most metal-poor dwarf star-forming galaxies (SFG) in the local Universe, J1234+3901, with the Large Binocular Telescope (LBT)/Mu…
The host galaxies of luminous type 2 AGN at 0.3-0.4
J. J. Urbano-Mayorgas, M. Villar Martín, F. Buitrago +7
We study the morphological and structural properties of the host galaxies associated with 57 optically-selected luminous type 2 AGN at 0.3-0.4: 16 high-luminosity Seyfert 2…
A headless tadpole galaxy: the high gas-phase metallicity of the ultra-diffuse galaxy UGC 2162
J. Sanchez Almeida, A. Olmo-Garcia, B. G. Elmegreen +5
The cosmological numerical simulations tell us that accretion of external metal-poor gas drives star-formation (SF) in galaxy disks. One the best pieces of observational evidence s…
Chemical abundances and radial velocities in the extremely metal-poor galaxy DDO 68
F. Annibali, V. La Torre, M. Tosi +9
We present chemical abundances and radial velocities of six HII regions in the extremely metal-poor star-forming dwarf galaxy DDO 68. They are derived from deep spectra in the wave…
Dust spectrum and polarisation at 850 um in the massive IRDC G035.39-00.33
Mika Juvela, Vincent Guillet, Tie Liu +18
The dust sub-millimetre polarisation of star-forming clouds carries information on dust and the role of magnetic fields in cloud evolution. With observations of a dense filamentary…
Fossil group origins IX. Probing the formation of fossil galaxy groups with stellar population gradients of their central galaxies
E. M. Corsini, L. Morelli, S. Zarattini +7
Fossil groups (FGs) are galaxy aggregates with an extended and luminous X-ray halo, which are dominated by a very massive early-type galaxy and lack of L* objects. FGs are indeed c…
The faint end of the Centaurus A satellite luminosity function
D. Crnojević, D. J. Sand, P. N. Bennet +9
The Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS) is constructing a wide-field map of the resolved stellar populations in the extended halos of these two nearby, prom…
Dramatic X-ray spectral variability of a Compton-thick type-1 QSO at
Torben Simm, Johannes Buchner, Andrea Merloni +6
We report on the discovery of a dramatic X-ray spectral variability event observed in a broad line type-1 QSO. The XMM-Newton spectrum from the year 2000 is characterized…
Observations of the MIssing Baryons in the warm-hot intergalactic medium
F. Nicastro, J. Kaastra, Y. Krongold +18
It has been known for decades that the observed number of baryons in the local universe falls about 30-40% short of the total number of baryons predicted by Big-Bang Nucleosynthesi…
ALMA observations of a metal-rich damped Lyα absorber at z = 2.5832: evidence for strong galactic winds in a galaxy group
J. P. U. Fynbo, K. E. Heintz, M. Neeleman +7
We report on the results of a search for CO(3-2) emission from the galaxy counterpart of a high-metallicity Damped Ly-alpha Absorber (DLA) at z=2.5832 towards the quasar Q0918+1636…
Molecular gas in the northern nucleus of Mrk273: Physical and chemical properties of the disk and its outflow
R. Aladro, S. König, S. Aalto +12
Aiming to characterise the properties of the molecular gas in the ultraluminous infrared galaxy Mrk273 and its outflow, we used the NOEMA interferometer to image the dense gas mole…
The strong rotation of M5 (NGC 5904) as seen from the MIKiS Survey of Galactic Globular Clusters
B. Lanzoni, F. R. Ferraro, A. Mucciarelli +10
In the context of the ESO-VLT Multi-Instrument Kinematic Survey (MIKiS) of Galactic globular clusters, we present the line-of-sight rotation curve and velocity dispersion profile o…
J-PLUS: The Javalambre Photometric Local Universe Survey
A. J. Cenarro, M. Moles, D. Cristóbal-Hornillos +119
J-PLUS is an ongoing 12-band photometric optical survey, observing thousands of square degrees of the Northern hemisphere from the dedicated JAST/T80 telescope at the Observatorio…
Massive, Absorption-selected Galaxies at Intermediate Redshifts
N. Kanekar, J. X. Prochaska, L. Christensen +7
The nature of absorption-selected galaxies and their connection to the general galaxy population have been open issues for more than three decades, with little information availabl…
Spectroscopic decomposition of NGC 3521: unveiling the properties of the bulge and disc
Lodovico Coccato, Maximilian H. Fabricius, Roberto P. Saglia +4
We study the kinematics and the stellar populations of the bulge and disc of the spiral galaxy NGC 3521. At each position in the field of view, we separate the contributions of the…
The local rotation curve of the Milky Way based on SEGUE and RAVE data
K. Sysoliatina, A. Just, O. Golubov +13
We construct the rotation curve of the Milky Way in the extended solar neighbourhood using a sample of SEGUE (Sloan Extension for Galactic Understanding and Exploration) G-dwarfs.…