Download or read book The Long Period Variable Star with Particular Reference to Variables of Class S written by Dorothy Nell Davis and published by . This book was released on 1934 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Variable Stars written by John Stephen Glasby and published by Constable. This book was released on 1969 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pulsation Properties of Mira Long Period Variables written by Julius H. Cahn and published by . This book was released on 1980 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of Long Period Variables written by Leon Campbell and published by . This book was released on 1955 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Plan for Securing Observations of the Variable Stars written by Edward Charles Pickering and published by . This book was released on 1882 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Changes of Period in Long period Variables written by Theodore E. Sterne and published by . This book was released on 1937 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Maxima and Minima of Long Period Variables 1949 1975 written by Janet Akyüz Mattei and published by . This book was released on 1990 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Long Period Variable Stars and the Globular Cluster NGC 5927 written by Liam Daly and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long period variable stars (LPV) are pulsating variables with very long periods in the range of 30 to 1000 days. As a consequence, they have proved challenging to study effectively and are therefore poorly understood. This study focuses on the study and classification of the LPVs in the metal-rich globular cluster NGC 5927, which has not had a variable star focused investigation since a search using photographic plates in 1977, at which point 11 LPV stars were discovered but only five were assigned a period. The data used in this study comes from the PROMPT5 telescope at Cerro Tololo Inter-American Observatory in Chile. CCD images were captured in the V and I bands between January 2009 and October 2014. Photometry was performed on the images using the image subtraction software ISIS in order to generate lightcurves. Additional data for potential NGC 5927 variables was mined from the ASAS-SN online variable star database. A color-magnitude diagram of NGC 5927 was generated using the DAOPHOT software. Of the 11 previously known LPVs, eight were captured in the ISIS field of view, leading to updated periods and variable type classification for those eight LPVs. Additionally, four new LPVs were discovered with high confidence, while 14 additional LPVs were identified with low confidence, and 14 further potential variables were identified but not able to be confirmed with the data. The lower confidence variables are correspondingly lower amplitude and less evolved. Future efforts to shore up the low confidence variables and inspect the possible variables would advance the understanding of LPVs even further.

Download or read book Variable Stars of Long Period written by Sidney Dean Townley and published by . This book was released on 1892 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Tentative Classification of Long Period Variables written by Leon Campbell and published by . This book was released on 1925 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to the Study of Variable Stars written by Caroline Ellen Furness and published by . This book was released on 1915 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Pulsation Theory of Variable Stars written by Svein Rosseland and published by . This book was released on 1949 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Pulsation Theory of Long period Variables written by Roderic M. Scott and published by . This book was released on 1941 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Light Curves of Long Period Variables written by and published by . This book was released on 1975 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparison Stars for 252 Variables of Long Period written by and published by . This book was released on 1908 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Light Curves of Long Period Variables written by and published by . This book was released on 1970 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observing Variable Stars written by David H. Levy and published by Cambridge University Press. This book was released on 1998-04-16 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: David Levy's entertaining, well-researched book is aimed at the amateur enthusiast who likes to learn enjoyably. Beginning with advice on binoculars and telescopes, and how to observe the night sky effectively, the author goes on to describe thoroughly the field of variable star observation, a field in which amateurs have made important contributions. He shows how to interpret variations in light output in terms of the life of a star, from birth through to sometimes violent death. All of the major variable stars are described and classified, as well as other variable objects such as active galaxies, asteroids, comets and the sun. The book also contains a guide to the seasonal night sky. Throughout, practical observations serve to complement the text, producing an exciting, very readable introduction to this fascinating subject.