Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Barbara Lanzoni"'
Autor:
Francesco R. Ferraro, Alessio Mucciarelli, Barbara Lanzoni, Cristina Pallanca, Mario Cadelano, Alex Billi, Alison Sills, Enrico Vesperini, Emanuele Dalessandro, Giacomo Beccari, Lorenzo Monaco, Mario Mateo
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract Blue stragglers are anomalously luminous core hydrogen-burning stars formed through mass-transfer in binary/triple systems and stellar collisions. Their physical and evolutionary properties are largely unknown and unconstrained. Here we anal
Externí odkaz:
https://doaj.org/article/2bd65591a28f4ef493009f2e39ee7bfe
Autor:
Alex Billi, Francesco R. Ferraro, Alessio Mucciarelli, Barbara Lanzoni, Mario Cadelano, Lorenzo Monaco, Mario Mateo, John I. Bailey III, Megan Reiter, Edward W. Olszewski
Publikováno v:
The Astrophysical Journal, Vol 956, Iss 2, p 124 (2023)
We used high-resolution spectra acquired with the Magellan Telescope to measure radial and rotational velocities of approximately 200 stars in the Galactic globular cluster NGC 3201. The surveyed sample includes blue straggler stars (BSSs) and refere
Externí odkaz:
https://doaj.org/article/6e751f44ceda426e87097060b3cd9c58
Autor:
Camilla Giusti, Mario Cadelano, Francesco R. Ferraro, Barbara Lanzoni, Silvia Leanza, Cristina Pallanca, Enrico Vesperini, Emanuele Dalessandro, Alessio Mucciarelli
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 2, p 125 (2023)
In the context of a project aimed at characterizing the dynamical evolution of old globular clusters in the Large Magellanic Cloud, we have secured deep HST/WFC3 images of the massive cluster NGC 1835. In the field of view of the acquired images, at
Externí odkaz:
https://doaj.org/article/d26251e22ef242a59c1cd90a6c8d24c3
Autor:
Donatella Romano, Francesco R. Ferraro, Livia Origlia, Simon Portegies Zwart, Barbara Lanzoni, Chiara Crociati, Davide Massari, Emanuele Dalessandro, Alessio Mucciarelli, R. Michael Rich, Francesco Calura, Francesca Matteucci
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 85 (2023)
Terzan 5 is a heavily obscured stellar system located in the inner Galaxy. It has been postulated to be a stellar relic, a bulge fossil fragment witnessing the complex history of the assembly of the Milky Way bulge. In this paper, we follow the chemi
Externí odkaz:
https://doaj.org/article/f6603fb06c0542faa570cbbb0b0a4e3a
Autor:
Chiara Crociati, Elena Valenti, Francesco R. Ferraro, Cristina Pallanca, Barbara Lanzoni, Mario Cadelano, Cristiano Fanelli, Livia Origlia, Silvia Leanza, Emanuele Dalessandro, Alessio Mucciarelli, R. Michael Rich
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 1, p 17 (2023)
In the context of a project aimed at characterizing the properties of the so-called Bulge Fossil Fragments (the fossil remnants of the bulge formation epoch), here we present the first determination of the metallicity distribution of Liller 1. For a
Externí odkaz:
https://doaj.org/article/766fe22514bb4bd69d66c0148c4ac0bd
Autor:
Jianxing Chen, Francesco R. Ferraro, Maurizio Salaris, Mario Cadelano, Barbara Lanzoni, Cristina Pallanca, Leandro G. Althaus, Santi Cassisi
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 155 (2023)
Recently, slowly cooling white dwarfs (WDs) are a new class of WD that have been identified in two globular clusters (namely M13 and NGC 6752), showing a horizontal branch (HB) morphology with an extended blue tail. The cooling rate of these WDs is r
Externí odkaz:
https://doaj.org/article/5f3cbc902b2745c7a8bdcded6687b99b
Autor:
Francesco R. Ferraro, Barbara Lanzoni, Enrico Vesperini, Mario Cadelano, Dan Deras, Cristina Pallanca
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 145 (2023)
We have used the “dynamical clock” to measure the level of dynamical evolution reached by three Galactic globular clusters (namely, NGC 3201, NGC 6316, and NGC 6440). This is an empirical method that quantifies the level of central segregation of
Externí odkaz:
https://doaj.org/article/14ca1de18be2490dac3cda86720923b4
Autor:
Cristina Pallanca, Silvia Leanza, Francesco R. Ferraro, Barbara Lanzoni, Emanuele Dalessandro, Mario Cadelano, Enrico Vesperini, Livia Origlia, Alessio Mucciarelli, Elena Valenti, Andrea Miola
Publikováno v:
The Astrophysical Journal, Vol 950, Iss 2, p 138 (2023)
In the context of a project aimed at characterizing the properties of star clusters in the Galactic bulge, here we present the determination of the internal kinematics and structure of the massive globular cluster NGC 6569. The kinematics has been st
Externí odkaz:
https://doaj.org/article/be31746a0ebb4ee3b93038f282e7b709
Autor:
Jianxing Chen, Mario Cadelano, Cristina Pallanca, Francesco R. Ferraro, Barbara Lanzoni, Alina G. Istrate, Marta Burgay, Paulo C. C. Freire, Tasha Gautam, Andrea Possenti, Alessandro Ridolfi
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 84 (2023)
We report on the discovery of the companion star to the millisecond pulsar PSR J1835−3259B in the Galactic globular cluster NGC 6652. Taking advantage of deep photometric archival observations acquired through the Hubble Space Telescope in near-UV
Externí odkaz:
https://doaj.org/article/56f32c49008f4b7f83ea56f954e2ae82
Autor:
Silvia Leanza, Cristina Pallanca, Francesco R. Ferraro, Barbara Lanzoni, Emanuele Dalessandro, Mario Cadelano, Enrico Vesperini, Livia Origlia, Alessio Mucciarelli, Elena Valenti
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 2, p 162 (2023)
In the context of the ESO-VLT Multi-Instrument Kinematic Survey of Galactic globular clusters, here we present the line-of-sight velocity dispersion profile of NGC 6440, a massive globular cluster located in the Galactic bulge. By combining the data
Externí odkaz:
https://doaj.org/article/d043ed57216c44c1a4f8e22a55cb6a1e