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Do the Pre-Main Sequence δ Scuti Stars Really Exist?

Published online by Cambridge University Press:  12 April 2016

J.H. Peña ,
R. Peniche ,
J.C. Plascencia ,
M.A. Hobart ,
C. de la Cruz ,
A. Garcia Cole ,
F. Cervantes ,
J.P. Sareyan ,
L. Parrao  and
M. Carrillo
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J.H. Peña
Affiliation:
Instituto de Astronomía, UNAM, México
R. Peniche
Affiliation:
Instituto de Astronomía, UNAM, México
J.C. Plascencia
Affiliation:
Facultad de Ciencias, UNAM, México
M.A. Hobart
Affiliation:
Facultad de Fisica, UV, México
C. de la Cruz
Affiliation:
Facultad de Fisica, UV, México
A. Garcia Cole
Affiliation:
CCH Sur, UNAM, México
F. Cervantes
Affiliation:
Instituto de Astronomía, UNAM, México
J.P. Sareyan
Affiliation:
Observatoire de la Cote d’Azur, France
L. Parrao
Affiliation:
Instituto de Astronomía, UNAM, México
M. Carrillo
Affiliation:
Facultad de Ciencias, UNAM, México
T. Valdes
Affiliation:
Instituto de Física, UNAM, México
I. Prada
Affiliation:
Instituto de Física, UNAM, México

Extract

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Recently, new views of the current status of δ Scuti stars have been developed by Rodríguez & Breger (2001) who carried out an excellent review, listing 8 pre-main-sequence (PMS) δ Scuti candidates and examined the possibility of the existence of PMS δ Scuti variable stars. Here we discuss the nature of 4 stars from their list: 2 said to be members of NGC 2264 and 2 of NGC 6823.

Type
Part 2.4. Delta Scuti Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 346 - 347
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

Breger, M. 1972 ApJ, 171, 539 Google Scholar
Kurtz, D.W. 2000, in ASP Conf. Ser., Vol. 210, Delta Scuti and Related Stars, eds. Breger, M. & Montgomery, M., (San Francisco ASP), 287 Google Scholar
Lang, K.R. 1991 Astrophysical Data: Planets, Stars, (Springer-Verlag Berlin)Google Scholar
Peña, J.H., Peniche, R., Cervantes, F., Garcia, R., & Sareyan, J.P. 2000, ASP Conf. Ser., Vol. 203, The Impact of Large Scale Surveys on Variable Star Research, eds. Szabados, L. & Kurtz, D., (San Francisco ASP), 465 Google Scholar
Pigulski, A., Kolaczkowski, Z., & Kopacki, G. 2000, Acta Astron., 50, 113 Google Scholar
Rodríguez, E. & Breger, M. 2001, A&A 366, 178 Google Scholar