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Titolo:
On the Wilson-Bappu relationship in the MgII k line
Autore:
Cassatella, A; Altamore, A; Badiali, M; Cardini, D;
Indirizzi:
CNR, Ist Astrofis Spaziale, Area Ric Tor Vergata, I-00133 Rome, Italy CNRRome Italy I-00133 aziale, Area Ric Tor Vergata, I-00133 Rome, Italy Univ Roma Tre, Dipartimento Fis E Amaldi, I-00146 Rome, Italy Univ Roma Tre Rome Italy I-00146 mento Fis E Amaldi, I-00146 Rome, Italy
Titolo Testata:
ASTRONOMY & ASTROPHYSICS
fascicolo: 3, volume: 374, anno: 2001,
pagine: 1085 - 1091
SICI:
1432-0746(200108)374:3<1085:OTWRIT>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
HIGH-RESOLUTION SPECTRA; INES SYSTEM; STARS; MIRA;
Keywords:
stars : distances; stars : late-type; ultraviolet : general; line : profiles; catalogs;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Cardini, D CNR, Ist Astrofis Spaziale, Area Ric Tor Vergata, Via Fosso Cavaliere 100,I-00133 Rome, Italy CNR Via Fosso Cavaliere 100 Rome Italy I-00133 133 Rome, Italy
Citazione:
A. Cassatella et al., "On the Wilson-Bappu relationship in the MgII k line", ASTRON ASTR, 374(3), 2001, pp. 1085-1091

Abstract

An investigation is carried out on the Wilson-Bappu effect in the Mg II k line at 2796.34 Angstrom. The work is based on a selection of 230 stars observed by both the IUE and HIPPARCOS satellites, covering a wide range of spectral types (F to M) and absolute visual magnitudes (-5.4 less than or equal to M-V less than or equal to 9.0). A semi-automatic procedure is used tomeasure the line widths, which applies also in the presence of strong central absorption reversal. The Wilson-Bappu relationship here provided is considered to represent an improvement over previous recent results for the considerably larger data sample used, as well as for a proper consideration of the measurement errors. No evidence has been found for a possible dependence of the WB effect on stellar metallicity and effective temperature.

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Documento generato il 04/12/20 alle ore 13:08:17