Zobrazeno 1 - 10
of 30
pro vyhledávání: '"L. Lovisi"'
Autor:
Alessio Mucciarelli, E. Lapenna, Emanuele Dalessandro, Livia Origlia, Antonio Sollima, Francesco R. Ferraro, C. Pallanca, Barbara Lanzoni, Filippo Contenta, Enrico Vesperini, L. Lovisi
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 462:1937-1951
We present an observational estimate of the fraction and distribution of dark mass in the innermost region of the two Galactic globular clusters NGC 6218 (M12) and NGC 288. Such an assessment has been made by comparing the dynamical and luminous mass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df938ec0a32b16d19107efea6a96e2a9
https://doi.org/10.1093/mnras/stw1779
https://doi.org/10.1093/mnras/stw1779
Autor:
Rodrigo A. Ibata, Emanuele Dalessandro, L. Lovisi, Davide Massari, Alessio Mucciarelli, R. M. Rich, Francesco R. Ferraro, Livia Origlia, Barbara Lanzoni, Michele Bellazzini, David Reitzel
As part of a study aimed at determining the kinematical and chemical properties of Terzan 5, we present the first characterization of the bulge stars surrounding this puzzling stellar system. We observed 615 targets located well beyond the tidal radi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::247de18d80b9eba789f84b0c3717ea3d
Autor:
Elena Valenti, Davide Massari, Emanuele Dalessandro, Francesco R. Ferraro, Alessio Mucciarelli, Rodrigo A. Ibata, Livia Origlia, David Reitzel, Michele Bellazzini, R. M. Rich, L. Lovisi, Barbara Lanzoni
We present new determinations of the iron abundance for 220 stars belonging to the stellar system Terzan 5 in the Galactic bulge. The spectra have been acquired with FLAMES at the Very Large Telescope of the European Southern Observatory and DEIMOS a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d67dd28d6fe9c9dd15f65882f0c2080
We present the helium abundance of the two metal-poor clusters M30 and NGC6397. Helium estimates have been obtained by using the high-resolution spectrograph FLAMES at the ESO Very Large Telescope and by measuring the HeI line at 4471 A in 24 and 35
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5eff18a129fd033ca36a8fddecc44d98
Autor:
Marcella Marconi, Alessio Mucciarelli, Emanuele Dalessandro, Giuseppe Bono, Francesco R. Ferraro, Barbara Lanzoni, L. Lovisi, Giuliana Fiorentino
We present a new set of nonlinear, convective radial pulsation models for main sequence stars computed assuming three metallicities: Z=0.0001, 0.001 and 0.008. These chemical compositions bracket the metallicity of stellar systems hosting SX Phoenici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84441bedbc9cb608b8570051193a2e47
http://arxiv.org/abs/1507.06603
http://arxiv.org/abs/1507.06603
Autor:
Giacomo Beccari, Alison Sills, Barbara Lanzoni, Andrea Bellini, Davide Massari, L. Lovisi, F. R. Ferraro, Paolo Miocchi, Emanuele Dalessandro, Steinn Sigurdsson, Alessio Mucciarelli
We used high-quality images acquired with the Wide Field Camera 3 on board the Hubble Space Telescope to probe the blue straggler star (BSS) population of the galactic globular cluster NGC 362. We have found two distinct sequences of BSSs: this is th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58fcfde50c7738513cd30684245be99d
http://hdl.handle.net/11585/388332
http://hdl.handle.net/11585/388332
Autor:
Barbara Lanzoni, Francesco R. Ferraro, Alessio Mucciarelli, Emanuele Dalessandro, Lorenzo Monaco, L. Lovisi
We present spectroscopic observations acquired with FLAMES and XSHOOTER at the Very Large Telescope for a sample of 15 blue straggler stars (BSSs) in the globular cluster (GC) M30. The targets have been selected to sample the two BSS sequences discov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a635251571c7b06bfc0497fdb5cc4cb3
http://hdl.handle.net/11585/388325
http://hdl.handle.net/11585/388325
Autor:
R. Contreras Ramos, Emanuele Dalessandro, F. R. Ferraro, Alessio Mucciarelli, R. G. Gratton, L. Lovisi, Barbara Lanzoni
We used three sets of high-resolution spectra acquired with the multifiber facility FLAMES at the Very Large Telescope of the European Southern Observatory to investigate the chemical and kinematical properties of a sample of 42 horizontal branch (HB
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d55529700821604d796769f447e58dc1
http://hdl.handle.net/11585/127954
http://hdl.handle.net/11585/127954
Publikováno v:
Ecology of Blue Straggler Stars ISBN: 9783662444337
This chapter presents an overview of the main observational results obtained to date about Blue Straggler Stars (BSSs) in Galactic Globular Clusters (GCs). The BSS specific frequency, radial distribution, chemical composition and rotational propertie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abc9b5c110ce1df501f3ebc8b918e383
http://hdl.handle.net/11585/548885
http://hdl.handle.net/11585/548885
Autor:
Francesco R. Ferraro, Barbara Lanzoni, Emanuele Dalessandro, Lorenzo Monaco, Alessio Mucciarelli, L. Lovisi
By using high-resolution spectra acquired with FLAMES-GIRAFFE at the ESO/VLT, we measured radial and rotational velocities for 110 Blue Straggler stars (BSSs) in Omega Centauri, the globular cluster-like stellar system harboring the largest known BSS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::579172e56ca075db736897169b41df01
http://arxiv.org/abs/1410.2275
http://arxiv.org/abs/1410.2275