Zobrazeno 1 - 10
of 688
pro vyhledávání: '"Lanzoni, B."'
Autor:
Dalessandro, E., Cadelano, M., Della Croce, A., Aros, F. I., White, E. B., Vesperini, E., Fanelli, C., Ferraro, F. R., Lanzoni, B., Leanza, S., Origlia, L.
Publikováno v:
A&A 691, A94 (2024)
We present the first 3D kinematic analysis of multiple stellar populations (MPs) in a representative sample of 16 Galactic globular clusters (GCs). For each GC in the sample we studied the MP line-of-sight, plane-of-the-sky and 3D rotation as well as
Externí odkaz:
http://arxiv.org/abs/2409.03827
Autor:
Della Croce, A., Aros, F. I., Vesperini, E., Dalessandro, E., Lanzoni, B., Ferraro, F. R., Bhat, B.
Context. Globular clusters (GCs) are suggested to host many stellar-mass black holes (BHs) at their centers, thus resulting in ideal testbeds for BH formation and retention theories. BHs are expected to play a major role in GC structural and dynamica
Externí odkaz:
http://arxiv.org/abs/2409.01400
Autor:
Fanelli, C., Origlia, L., Rich, R. M., Ferraro, F. R., Garay, D. A. Alvarez, Chiappino, L., Lanzoni, B., Pallanca, C., Crociati, C., Dalessandro, E.
We present a high resolution chemical study of a representative sample of 21 luminous giant stars of Liller~1, a complex stellar system in the Galactic bulge, based on H band spectra acquired with the Near InfraRed Spectrograph at KeckII. 15 stars tu
Externí odkaz:
http://arxiv.org/abs/2408.12649
Autor:
Fanelli, C., Origlia, L., Mucciarelli, A., Ferraro, F. R., Rich, R. M., Lanzoni, B., Massari, D., Pallanca, C., Dalessandro, E., Loriga, M.
We used near-infrared spectroscopy at medium-high resolution (R=8,000$-$25,000) to perform the first comprehensive chemical study of the intermediate luminosity bulge globular cluster Terzan~6. We derived detailed abundances and abundance patterns of
Externí odkaz:
http://arxiv.org/abs/2406.07180
Autor:
Garay, D. A. Alvarez, Fanelli, C., Origlia, L., Pallanca, C., Mucciarelli, A., Chiappino, L., Crociati, C., Lanzoni, B., Ferraro, F. R., Rich, R. M., Dalessandro, E.
We present the first comprehensive chemical study of a representative sample of 27 luminous red giant branch (RGB) stars belonging to Liller 1, a complex stellar system in the Galactic bulge. This study is based on medium-resolution near-infrared spe
Externí odkaz:
http://arxiv.org/abs/2404.14130
Autor:
Chen, J., Cadelano, M., Pallanca, C., Ferraro, F., Lanzoni, B., Istrate, A., Burgay, M., Freire, P., Gautam, T., Possenti, A., Ridolfi, A.
We report on the discovery of the companion star to the millisecond pulsar PSR J1835-3259B in the Galactic globular cluster NGC 6652. Taking advantage of deep photometric archival observations acquired through the Hubble Space Telescope in near-ultra
Externí odkaz:
http://arxiv.org/abs/2303.11263
Autor:
Dalessandro, E., Crociati, C., Cignoni, M., Ferraro, F. R., Lanzoni, B., Origlia, L., Pallanca, C., Rich, R. M., Saracino, S., Valenti, E.
Liller 1 and Terzan 5 are two massive systems in the Milky-Way bulge hosting populations characterized by significantly different ages ($\Delta t>7-8$ Gyr) and metallicities ($\Delta$[Fe/H]$\sim1$ dex). Their origin is still strongly debated in the l
Externí odkaz:
http://arxiv.org/abs/2210.05694
Autor:
Chen, J., Ferraro, F. R., Cadelano, M., Salaris, M., Lanzoni, B., Pallanca, C., Althaus, L. G., Cassisi, S., Dalessandro, E.
Recently, a new class of white dwarfs (``slowly cooling WDs'') has been identified in the globular cluster M13. The cooling time of these stars is increased by stable thermonuclear hydrogen burning in their residual envelope. These WDs are thought to
Externí odkaz:
http://arxiv.org/abs/2206.10039
Autor:
Libralato, M., Bellini, A., Vesperini, E., Piotto, G., Milone, A. P., van der Marel, R. P., Anderson, J., Aparicio, A., Barbuy, B., Bedin, L. R., Borsato, L., Cassisi, S., Dalessandro, E., Ferraro, F. R., King, I. R., Lanzoni, B., Nardiello, D., Ortolani, S., Sarajedini, A., Sohn, S. T.
A number of studies based on data collected by the $\textit{Hubble Space Telescope}$ ($\textit{HST}$) GO-13297 program "HST Legacy Survey of Galactic Globular Clusters: Shedding UV Light on Their Populations and Formation" have investigated the photo
Externí odkaz:
http://arxiv.org/abs/2206.09924
Autor:
Leanza, S., Pallanca, C., Ferraro, F. R., Lanzoni, B., Dalessandro, E., Origlia, L., Mucciarelli, A., Valenti, E., Tiongco, M., Varri, A. L., Vesperini, E.
We present an investigation of the internal kinematic properties of M79 (NGC 1904). Our study is based on radial velocity measurements obtained from the ESO-VLT Multi-Instrument Kinematic Survey (MIKiS) of Galactic globular clusters for more than 170
Externí odkaz:
http://arxiv.org/abs/2203.07294