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HD 35786


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Photometric variations of Orion population stars. V - A search for periodicities
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1987AJ.....94..137H&db_key=AST

Photometric variations of Orion population stars. II Ae-irregular variables and T Tauri stars
UBVRI and H-alpha photometry of five T Tauri stars and threeAe-irregular variables obtained during the 1982/83 observing season atVVO and KPNO is presented. RY Tau shows very little change in color withbrightness, 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 hasbeen confirmed when faint, the star ceases becoming redder as it dimsand 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 UXOri, the latter confirming Zajtseva's (1973) result. These 'blueing'trends make interpretations of the variability based on dust obscurationimplausible. The Ae stars monitored were nearly indistinguishable intheir photometric behavior from the G-type weak emission line T Tauristars SU Aur and CO Ori, suggesting a common mechanism for theirvariability. A general scheme for integrating the diverse properties ofthese variables is proposed, which involves photospheric andchromospheric responses to strong surface magnetic fields.

Optical monitoring of Orion population stars. I - Results for some T Tauri and Herbig Ae/Be stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1982AJ.....87.1710H&db_key=AST

Rote Nebel in der Wintermilchstraβe. Mit 1 Textabbildung
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Datos observacionales y astrométricos

Constelación:Orión
Ascensión Recta:05h27m42.19s
Declinación:+11°28'15.2"
Magnitud Aparente:8.557
Movimiento Propio en Ascensión Recta:18.8
Movimiento Propio en Declinación:-43.8
B-T magnitude:9.723
V-T magnitude:8.654

Catálogos y designaciones:
Nombres Propios   (Edit)
HD 1989HD 35786
TYCHO-2 2000TYC 708-577-1
USNO-A2.0USNO-A2 0975-01620106

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