Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Short-Term H ? Line Variations in Classical Be Stars: 59 Cyg and OT Gem Subject The topic of the resource Be; circumstellar matter; OT Gem); Stars: emission-line; stars: individual (59 Cyg; stars: rotation; techniques: spectroscopic Description An account of the resource We present the optical spectroscopic study of two classical Be stars, 59 Cyg and OT Gem obtained over a period of few months in 2009. We detected a rare triple-peak H ? emission phase in 59 Cyg and a rapid decrease in the emission strength of H ? in OT Gem, which are used to understand their circumstellar disks. We find that 59 Cyg is likely to be rapid rotator, rotating at a fractional critical rotation of ?0.80. The radius of the H ? emission region for 59 Cyg is estimated to be Rd/R? ? 10.0, assuming a Keplerian disk, suggesting that it has a large disk. We classify stars which have shown triple-peaks into two groups and find that the triple-peak emission in 59 Cyg is similar to ? Tau. OT Gem is found to have a fractional critical rotation of ?0.30, suggesting that it is either a slow rotator or viewed in low inclination. In OT Gem, we observed a large reduction in the radius of the H ? emission region from ?6.9 to ?1.7 in a period of three months, along with the reduction in the emission strength. Our observations suggest that the disk is lost from outside to inside during this disk loss phase in OT Gem. 2017, Indian Academy of Sciences. Creator An entity primarily responsible for making the resource Paul K.T.; Shruthi S.B.; Subramaniam A. Source A related resource from which the described resource is derived Journal of Astrophysics and Astronomy, Vol-38, No. 1 Publisher An entity responsible for making the resource available Springer India Date A point or period of time associated with an event in the lifecycle of the resource 2017-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1007/s12036-017-9426-0" target="_blank" rel="noreferrer noopener">https://doi.org/10.1007/s12036-017-9426-0</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015679205&amp;doi=10.1007%2Fs12036-017-9426-0&amp;partnerID=40&amp;md5=8d30b2bc47c4c8ec2cb96bb7984e5801" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85015679205&amp;doi=10.1007%2fs12036-017-9426-0&amp;partnerID=40&amp;md5=8d30b2bc47c4c8ec2cb96bb7984e5801</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 2506335 Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Paul K.T., Department of Physics, Christ University, Bangalore, 560 029, India; Shruthi S.B., Department of Physics, Christ University, Bangalore, 560 029, India; Subramaniam A., Indian Institute of Astrophysics, II Block, Korrmangala, Bangalore, 560 034, India