346 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National ObservatoryBR24 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Laboratório Nacional de AstrofísicaBR9 papers
- Instituto de Astrofísica de CanariasES8 papers
- Johns Hopkins UniversityUS7 papers
- Eötvös Loránd UniversityHU6 papers
- University of GenevaCH6 papers
- Instituto de Astrofísica de AndalucíaES5 papers
- Observatoire de ParisFR5 papers
- Space Telescope Science InstituteUS5 papers
- St Petersburg UniversityRU5 papers
- Universidad de La LagunaES5 papers
39 papers
No Significant Excess in Typical Variability in CLAS+ Changing-Look AGN Candidates in Rubin DP2
Lilianne Nakazono
Rubin Data Preview 2 (DP2) samples the CLAS+ changing-look AGN (CLAGN) candidates days after their comparison epochs, so it can test whether these objects retain…
The Narrow Line Region properties of ESO138-G001 unveiled by SOAR/SIFS observations
A. Rodríguez-Ardila, D. May, S. Panda +2
We study in detail the inner 600 pc of the Seyfert 2 galaxy ESO138-G001 by means of the SOAR Integral Field Spectrograph (SIFS) attached to the SOAR telescope. This source is known…
Reanalysis of neutron-capture elements in the benchmark r-rich star CS 31082-001
H. Ernandes, M. J. Castro, B. Barbuy +4
We revisit the abundances of neutron-capture elements in the metal-poor ([Fe/H]=-2.9) r-process-rich halo star CS 31082-001. Partly motivated by the development of the new near-ult…
Mapping the structure of the planetary 2:1 mean motion resonance. The TOI-216, K2-24, and HD27894 systems
Cristian Giuppone, Adrián Rodríguez, Viviam Alencastro +2
Mean motion resonances (MMR) are a frequent phenomenon among extrasolar planetary systems. Current observations indicate that many systems have planets that are close to or inside…
A Highly Magnified Star at Redshift 6.2
Brian Welch, Dan Coe, Jose M. Diego +26
Galaxy clusters magnify background objects through strong gravitational lensing. Typical magnifications for lensed galaxies are factors of a few but can also be as high as tens or…
Testing the key role of the stellar mass-halo mass relation in galaxy merger rates and morphologies via DECODE, a novel Discrete statistical sEmi-empiriCal mODEl
Hao Fu, Francesco Shankar, Mohammadreza Ayromlou +19
The relative roles of mergers and star formation in regulating galaxy growth are still a matter of intense debate. We here present our DECODE, a new Discrete statistical sEmi-empir…
The miniJPAS Survey: Detection of double-core Lyα morphology of two high-redshift (z>3) QSOs
P. T. Rahna, Zhen-Ya Zheng, Ana L. Chies-Santos +30
The Ly emission is an important tracer of neutral gas in a circum-galactic medium (CGM) around high-z QSOs. The origin of Lya emission around QSOs is still under debate which ha…
Coincidence between morphology and star-formation activity through cosmic time: the impact of the bulge growth
Paola Dimauro, Emanuele Daddi, Francesco Shankar +10
The origin of the quenching in galaxies is still highly debated. Different scenarios and processes are proposed. We use multi-band (400-1600 nm) bulge-disc decompositions of massiv…
Be, V and Cu in the halo star CS 31082-001 from near-UV spectroscopy
H. Ernandes, B. Barbuy, A. Friaça +5
The 'First Stars' programme revealed the metal-poor halo star CS 31082-001 to be r-process and actinide rich, including the first measurement of a uranium abundance for an old star…
Barium stars as tracers of s-process nucleosynthesis in AGB stars I. 28 stars with independently derived AGB mass
B. Cseh, B. Világos, M. P. Roriz +7
Barium (Ba) stars are polluted by material enriched in the slow neutron capture (s-process) elements synthesised in the interior of their former asymptotic giant branch (AGB) compa…
The miniJPAS Survey: A Study on Wavelength Dependence of the Photon Response Non-uniformity of the JPAS-{\it Pathfinder} Camera
Kai Xiao, Haibo Yuan, J. Varela +20
Understanding the origins of small-scale flats of CCDs and their wavelength-dependent variations plays an important role in high-precision photometric, astrometric, and shape measu…
The APOGEE Data Release 16 Spectral Line List
Verne V. Smith, Dmitry Bizyaev, Katia Cunha +15
The updated H-band spectral line list (from λ15,000 - 17,000Å) adopted by the Apache Point Observatory Galactic Evolution Experiment (APOGEE) for the SDSS IV Data Release 16 (DR16)…
Chemical abundances of hydrostatic and explosive alpha-elements in Sagittarius stream stars
Jeffrey L. Carlin, Allyson A. Sheffield, Katia Cunha +1
We analyze chemical abundances of stars in the Sagittarius (Sgr) tidal stream using high-resolution Gemini+GRACES spectra of 42 members of the highest surface brightness portions o…
Search for a heavy right-handed W boson and a heavy neutrino in events with two same-flavor leptons and two jets at 13 TeV
CMS Collaboration
A search for a heavy right-handed W boson (W) decaying to a heavy right-handed neutrino and a charged lepton in events with two same-flavor leptons (e or ) and two…
Orbital parameters and evolutionary status of the highly peculiar binary system HD 66051
E. Paunzen, M. Fedurco, K. G. Helminiak +8
The spectroscopic binary system HD 66051 (V414 Pup) consists of a highly peculiar CP3 (HgMn) star and an A-type component. It also shows out-of-eclipse variability that is due to c…
12C/13C isotopic ratios in red-giant stars of the open cluster NGC 6791
László Szigeti, Szabolcs Mészáros, Verne V. Smith +10
Carbon isotope ratios, along with carbon and nitrogen abundances, are derived in a sample of 11 red-giant members of one of the most metal-rich clusters in the Milky Way, NGC 6791.…
Invariant Solutions for the Einstein Field Equation
Marcelo Barbosa, Benedito Leandro, Romildo Pina
In this paper we provide a method capable of producing an infinite number of solutions for Einstein's equation on static spacetimes with perfect fluid as a matter field. All spacet…
The Correlation Between Mixing Length and Metallicity on the Giant Branch: Implications for Ages in the Gaia Era
Jamie Tayar, Garrett Somers, Marc H. Pinsonneault +28
In the updated APOGEE-Kepler catalog, we have asteroseismic and spectroscopic data for over 3000 first ascent red giants. Given the size and accuracy of this sample, these data off…
Influence of external magnetic field, finite-size effects and chemical potential on the phase transition of a complex scalar field
Erich Cavalcanti, Erick Castro, Cesar A. Linhares +1
A scalar model is built, as a quantum field theory defined on toroidal topologies, to describe phase transition in films subjected to periodic boundary conditions and influenced by…
The different origins of magnetic fields and activity in the Hertzsprung gap stars, OU Andromedae and 31 Comae
A. Borisova, M. Aurière, P. Petit +3
Context: When crossing the Hertzsprung gap, intermediate-mass stars develop a convective envelope. Fast rotators on the main sequence, or Ap star descendants, are expected to becom…
Chemical abundances and kinematics of barium stars
D. B. de Castro, C. B. Pereira, F. Roig +4
In this paper we present an homogeneous analysis of photospheric abundances based on high-resolution spectroscopy of a sample of 182 barium stars and candidates. We determined atmo…
GRACES observations of young [alpha/Fe]-rich stars
David Yong, Luca Casagrande, Kim A. Venn +10
We measure chemical abundance ratios and radial velocities in four massive (i.e., young) [alpha/Fe]-rich red giant stars using high-resolution high-S/N spectra from ESPaDOnS fed by…
Searching for new yellow symbiotic stars: positive identification of StHa63
N. O. Baella, C. B. Pereira, L. F. Miranda +1
Yellow symbiotic stars are useful targets to probe whether mass transfer has happened in these binary systems. However, the number of known yellow symbiotic stars is very scarce. W…
Chemical abundance gradients from open clusters in the Milky Way disk: results from the APOGEE survey
Katia Cunha, Peter M. Frinchaboy, Diogo Souto +23
Metallicity gradients provide strong constraints for understanding the chemical evolution of the Galaxy. We report on radial abundance gradients of Fe, Ni, Ca, Si, and Mg obtained…