Search Publications
The miniJPAS survey. Cluster and galaxy group detections with AMICO
Finoguenov, A.; Diego, J. M.; Zitrin, A. +32 more
Context. Samples of galaxy clusters allow us to better understand the physics at play in galaxy formation and to constrain cosmological models once the mass, position (for clustering studies), and redshift are known. In this context, large optical datasets play a crucial role.
Aims: We investigate the capabilities of the Javalambre-Physics of…
Did the Milky Way just light up? The recent star formation history of the Galactic disc
Rix, Hans-Walter; Zari, Eleonora; Frankel, Neige
We map the stellar age distribution (≲1 Gyr) across a 6 kpc × 6 kpc area of the Galactic disc in order to constrain our Galaxy's recent star formation history. Our modelling draws on a sample that encompasses all presumed disc O-, B-, and A-type stars (∼500 000 sources) with G < 16. To be less sensitive to reddening, we did not forward-model th…
The ALMA view of MP Mus (PDS 66): A protoplanetary disk with no visible gaps down to 4 au scales
Duchêne, G.; Dent, W. R. F.; de Gregorio-Monsalvo, I. +12 more
Aims: We aim to characterize the protoplanetary disk around the nearby (d ~ 100 pc), young solar analog MP Mus (PDS 66) and to reveal any signs of planets or ongoing planet formation in the system.
Methods: We present new ALMA observations of MP Mus at 0.89 mm, 1.3 mm, and 2.2 mm with angular resolutions of ~1″, 0.05″, and 0.25″, respect…
Kinematic differences between multiple populations in Galactic globular clusters
Pechetti, Renuka; Weilbacher, Peter M.; Krajnović, Davor +7 more
Aims: The formation process of multiple populations in globular clusters is still up for debate. These populations are characterized by different light-element abundances. Kinematic differences between the populations are particularly interesting in this respect because they allow us to distinguish between single-epoch formation scenarios and…
Solar flare hard X-rays from the anchor points of an eruptive filament
Volpara, Anna; Massa, Paolo; Krucker, Säm +7 more
Context. We present an analysis of a GOES M1.8 flare with excellent observational coverage in UV, extreme-UV (EUV), and X-ray, including observations from the Interface Region Imaging Spectrograph (IRIS), from the Solar Dynamics Observatory (SDO) with the Atmospheric Imaging Assembly (AIA), from the Hinode/EUV Imaging Spectrometer (EIS), from the …
The Gaia-ESO Survey: Old super-metal-rich visitors from the inner Galaxy
Gilmore, G.; Guiglion, G.; Randich, S. +12 more
Context. The solar vicinity is currently populated by a mix of stars with various chemo-dynamic properties, including stars with a high metallicity compared to the Sun. Dynamical processes such as churning and blurring are expected to relocate such metal-rich stars from the inner Galaxy to the solar region.
Aims: We report the identification …
Comparing the host galaxy ages of X-ray selected AGN in COSMOS. Obscured AGN are associated with older galaxies
Georgantopoulos, I.; Lanzuisi, G.; Mountrichas, G. +3 more
We explore the properties of the host galaxies of X-ray selected AGN in the COSMOS field using the Chandra Legacy sample and the LEGA-C survey VLT optical spectra. Our main goal is to compare the relative ages of the host galaxies of the obscured and unobscured AGN by means of the calcium break Dn(4000) and the Hδ Balmer line…
A characterization of ASAS-SN core-collapse supernova environments with VLT+MUSE. I. Sample selection, analysis of local environments, and correlations with light curve properties
Lyman, J. D.; Galbany, L.; Gutiérrez, C. P. +17 more
Context. The analysis of core-collapse supernova (CCSN) environments can provide important information on the life cycle of massive stars and constrain the progenitor properties of these powerful explosions. The MUSE instrument at the Very Large Telescope (VLT) enables detailed local environment constraints of the progenitors of large samples of C…
Spitzer thermal phase curve of WASP-121 b
Morello, G.; Lagage, P. -O.; Tan, J. C. +2 more
Aims: We analyse unpublished Spitzer observations of the thermal phase-curve of WASP-121 b, a benchmark ultra-hot Jupiter.
Methods: We adopted the wavelet pixel-independent component analysis technique to remove challenging instrumental systematic effects in these datasets and we fit them simultaneously with parametric light-curve models…
Spectroscopy of the supernova H0pe host galaxy at redshift 1.78
Ryan, R. E.; Yun, M. S.; Dole, H. +42 more
Supernova (SN) H0pe was discovered as a new transient in James Webb Space Telescope (JWST) NIRCam images of the galaxy cluster