Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-11T02:27:40.692Z Has data issue: false hasContentIssue false
  • English
  • Français

The NGC 2419 project: preliminary results on stellar variability

Published online by Cambridge University Press:  01 December 2006

M. Di Criscienzo ,
C. Greco ,
M. Dall'Ora ,
V. Ripepi ,
G. Clementini ,
I. Musella ,
M. Marconi ,
L. Federici ,
L. Di Fabrizio  and
Baldacci
...Show all authors
M. Di Criscienzo
Affiliation:
INAF–Osservatorio Astronomico di Capodimonte, Napoli, Italy email: dicrisci@na.astro.it
C. Greco
Affiliation:
INAF–Osservatorio Astronomico di Bologna, Italy
M. Dall'Ora
Affiliation:
INAF–Osservatorio Astronomico di Capodimonte, Napoli, Italy email: dicrisci@na.astro.it
V. Ripepi
Affiliation:
INAF–Osservatorio Astronomico di Capodimonte, Napoli, Italy email: dicrisci@na.astro.it
G. Clementini
Affiliation:
INAF–Osservatorio Astronomico di Bologna, Italy
I. Musella
Affiliation:
INAF–Osservatorio Astronomico di Capodimonte, Napoli, Italy email: dicrisci@na.astro.it
M. Marconi
Affiliation:
INAF–Osservatorio Astronomico di Capodimonte, Napoli, Italy email: dicrisci@na.astro.it
L. Federici
Affiliation:
INAF–Osservatorio Astronomico di Bologna, Italy
L. Di Fabrizio
Affiliation:
INAF–Osservatorio Astronomico di Bologna, Italy
Baldacci
Affiliation:
INAF–Osservatorio Astronomico di Bologna, Italy
M. Maio
Affiliation:
INAF–Osservatorio Astronomico di Bologna, Italy
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We have combined B, V, I time-series photometry from three different telescopes (SUBARU, TNG and HST) to study the variable star population of the remote Galactic globular cluster NGC 2419 and derive hints on a possible extragalactic origin for this cluster. We have discovered 40 new variables (34 RR Lyrae stars, 3 SX Phoenicis stars, Scuti 1 eclipsing binary system and 2 red irregular variables) doubling the number of known variable stars in NGC 2419.

Keywords

(Galaxy:) globular clusters: individual (NGC 2419)stars: variables: other
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S241: Stellar Populations as Building Blocks of Galaxies , December 2006 , pp. 243 - 244
Copyright
Copyright © International Astronomical Union 2007

References

Alard, C. 2000, A & A 144, 363Google Scholar
Mackey, & van den Berg, 2005, MNRAS 360, 631CrossRefGoogle Scholar
Oosterhoff, P.Th. 1939, Observatory 62, 104Google Scholar
Pinto, G. & Rosino, L. 1977, A & A 28, 427Google Scholar
Stetson, P.B. 1994, PASP 106, 250CrossRefGoogle Scholar
Stetson, P.B. 1996, User's Manual for DAOPHOT IIGoogle Scholar