Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Paola Focardi"'
Autor:
Birgit, Kelm, Paola, Focardi
Publikováno v:
Astron.Astrophys. 418 (2004) 937-946
The nature of Compact Groups (CGs) is investigated by comparing the luminosities and morphologies of CG galaxies, CG Neighbours and Isolated galaxies. CGs turn out to include more early type galaxies than Isolated galaxies and fewer low-luminosity ga
Externí odkaz:
http://arxiv.org/abs/astro-ph/0306414
Autor:
Paola Focardi, C. Pallanca, Barbara Lanzoni, Giacomo Beccari, Emanuele Dalessandro, Alessio Mucciarelli, Francesco R. Ferraro, M. Cadelano, Silvia Raso
We used resolved star counts from Hubble Space Telescope images to determine the center of gravity and the projected density profiles of 6 old globular clusters in the Large Magellanic Cloud (LMC), namely NGC 1466, NGC 1841, NGC 1898, NGC 2210, NGC 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d1b9511409b20608b08b4d7eda2a05e
http://arxiv.org/abs/1911.01928
http://arxiv.org/abs/1911.01928
Publikováno v:
The Astrophysical Journal
We used optical images acquired with the UVIS channel of the Wide Field Camera 3 on board of the Hubble Space Telescope to construct the first high-resolution extinction map in the direction of NGC 6440, a globular cluster located in the bulge of our
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::433fddc6ded97b656d1344fb5bc8048f
http://arxiv.org/abs/1908.09708
http://arxiv.org/abs/1908.09708
Publikováno v:
Astronomy & Astrophysics. 456:467-472
We present a new sample of bright galaxy pairs extracted applying an objective selection code to UZC catalog.The sample is volume limited to M$_{zw}$ = -18.9 +5 log ${\it h}$ and contains 89 galaxy pairs.We analyze the kinematical, morphological and
Publikováno v:
Astronomy & Astrophysics. 442:117-124
We examine the relative fractions of passive (Type 1), quiet-SF (Type 2) and active-SF (Type 3+4) galaxies as a function of luminosity and number of neighbours in several volume limited samples selected from the 2dFGRS. Neighbours are counted within
Autor:
Paola Focardi, B. Kelm
Publikováno v:
Astronomy & Astrophysics. 391:35-46
Applying an automatic neighbour search algorithm to the 3D UZC galaxy catalogue (Falco 1999) we have identified 291 compact groups (CGs) with redshifts between 1000 and 10000 km/s. The sample is analysed to investigate whether Triplets display kinema
Publikováno v:
International Astronomical Union Colloquium. 174:90-99
A method of searching for multiplets in a large catalogue of galaxies with measured redshifts is described. Compact Groups samples having different local and global characteristics are generated when the algorithm is applied to ZCAT catalogue. Both l
Autor:
Paola Focardi, Nicola Malavasi
We investigate the effect of the environment on the Faber Jackson (FJ) relation, using a sample of 384 nearby elliptical galaxies and estimating objectively their environment on the typical scale of galaxy clusters. We show that the intrinsic scatter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69955d1d2c2e76dff316337583036681
We investigate the X-ray properties of four isolated elliptical galaxies, selected from the Updated Zwicky Catalog according to strict isolation criteria. Isolated galaxies are not influenced by the group/cluster environment, and their X-ray emission
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94206eaefc094cce50570bb1c697d191
Based on a new survey of AGN activity in Compact Groups of Galaxies, we report a remarkable deficiency of Broad Line AGNs as compared to Narrow Line AGNs. The cause of such deficiency could be related to the average low luminosity of AGNs in CGs: $10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca0302a4dc433aa18e0dcbab28d37589
http://hdl.handle.net/11585/72137
http://hdl.handle.net/11585/72137