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- W2034885749 abstract "view Abstract Citations (71) References (18) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Photometric variations of Orion population stars. II. Ae-irregular variables and T Tauri stars. Herbst, W. ; Holtzman, J. A. ; Klasky, R. S. Abstract UBVRI and H-alpha photometry of five T Tauri stars and three Ae-irregular variables obtained during the 1982/83 observing season at VVO and KPNO is presented. RY Tau shows very little change in color with brightness, except in (V-R) where it actually becomes bluer as it fades. The 'turnaround' in (U-B) suggested in last year's data on CO Ori has been confirmed when faint, the star ceases becoming redder as it dims and begins to get bluer. The turnaround is also now clearly seen in B - V. Similar turnarounds are found in two of the Ae stars, BF Ori and UX Ori, the latter confirming Zajtseva's (1973) result. These 'blueing' trends make interpretations of the variability based on dust obscuration implausible. The Ae stars monitored were nearly indistinguishable in their photometric behavior from the G-type weak emission line T Tauri stars SU Aur and CO Ori, suggesting a common mechanism for their variability. A general scheme for integrating the diverse properties of these variables is proposed, which involves photospheric and chromospheric responses to strong surface magnetic fields. Publication: The Astronomical Journal Pub Date: November 1983 DOI: 10.1086/113455 Bibcode: 1983AJ.....88.1648H Keywords: A Stars; H Alpha Line; Irregular Variable Stars; Stellar Spectrophotometry; T Tauri Stars; Variable Stars; Chromosphere; Orion Constellation; Stellar Color; Stellar Magnitude; Tables (Data); Astronomy; Ae Stars:Light Curves; Light Curves:Ae Stars; Light Curves:T Tauri Stars; Photometry:T Tauri Stars; T Tauri Stars:Light Curves; T Tauri Stars:Photometry full text sources ADS | data products SIMBAD (19) Related Materials (4) Part 1: 1982AJ.....87.1710H Part 3: 1984AJ.....89.1716H Part 4: 1986AJ.....92.1387H Part 5: 1987AJ.....94..137H" @default.
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- W2034885749 date "1983-11-01" @default.
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- W2034885749 title "Photometric variations of Orion population stars. II Ae-irregular variables and T Tauri stars" @default.
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