The sensitivity of the C I 538.0 nm Fe I 537.9 nm and Ti II 538.1 nm lines to solar active regions

Autor: B. Caccin, V. Penza, D. Del Moro

Publikováno v: Astronomy & Astrophysics. 427:345-351

Using spectroscopy to probe stellar global parameters, such as effective temperature, is much exploited in the litera- ture. In the solar case it can be used as an indicator of magnetic cycle variations. In this work we study the sensitivity to brigh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb9b8d42f210135ad7c8f2403196bcc3
https://doi.org/10.1051/0004-6361:20041151

Spectral line ratios as ${\vec T}_{\bf \sf eff}$ indicators in solar-like stars

Autor: B. Caccin, V. Penza, M. T. Gomez

Publikováno v: Astronomy & Astrophysics. 386:286-295

The ratios of spectral line depths are often used as indicators of the stellar eective temperature Te. In particular, Gray & Livingston (1997a) calibrated the temperature sensitivity of the ratios between the central depths of the line C I 538.032 nm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e57bf846be33545c2493b885909ab38
https://doi.org/10.1051/0004-6361:20020217

The Backus-Gilbert inversion method and the processing of sampled data

Autor: B. Caccin, C. Roberti, P. Russo, L. A. Smaldone

Publikováno v: IEEE Transactions on Signal Processing. 40:2823-2825

The Backus-Gilbert (BG) method, an inversion method for solving integral equations, is treated. It is shown that, given a set of idealized delta -function kernels in the BG formalism, it is possible to derive an interpolation formula for a bandlimite

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ed35952f84344b1adc2428b6bc65274
https://doi.org/10.1109/78.165672

2-D multiline spectroscopy of the solar photosphere

Autor: Giuseppe Consolini, B. Caccin, Ermanno Pietropaolo, Francesco Berrilli, Fabio Lepreti, V. Penza

Publikováno v: 381 (2002): 253–264.
info:cnr-pdr/source/autori:Berrilli F., Consolini G., Pietropaolo E., Caccin B., Penza V., Lepreti F./titolo:2-D multiline spectroscopy of the solar photosphere/doi:/rivista:/anno:2002/pagina_da:253/pagina_a:264/intervallo_pagine:253–264/volume:381
Scopus-Elsevier

The structure and dynamics of the photosphere are investigated, with time series of broadband and monochromatic images of quiet granulation, at the solar disk center. Images were acquired with the IPM ob- serving mode at the THEMIS telescope. Velocit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2401b4721cb0a44b7da39ea7042a362
https://publications.cnr.it/doc/5993

Variations of the Chromospheric Network with the Solar Cycle

Autor: Ilaria Ermolli, B. Caccin, A. M. Sambuco, M. Fofi

Publikováno v: Solar Electromagnetic Radiation Study for Solar Cycle 22 ISBN: 9789401060998

We have digitized a small sample of Ca II K spectroheliograms from the photographic archive of Arcetri Observatory for the period 1950–1970. For each digitized plate, active regions have been automatically identified and masked by applying an algor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e7eabc30aaba91af28275e30951e04dd
https://doi.org/10.1007/978-94-011-5000-2_25