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Revista mexicana de astronomía y astrofísica
Print version ISSN 0185-1101
Rev. mex. astron. astrofis vol.46 n.1 Ciudad de México Apr. 2010
Age Estimation And Masss Functions of TTauri Stars in The Taurus Auriga Molecular Cloud
I. Küçük1 and I. Akkaya1
1 Department of Astronomy and Space Sciences, Faculty of Arts and Sciences, Erciyes University, Talas Yolu, 38039, Kayseri, Turkey. (kucuk@erciyes.edu.tr, akkaya@erciyes.edu.tr).
Received 2009 July 10
Accepted 2009 December 14
RESUMEN
En este trabajo se han calculado las funciones de masas en la actualidad (PDMF) de las estrellas TTauri (TTS) que están en la fase evolutiva de presecuencia principal (PMS) en el complejo de nubes moleculares de TaurusAuriga. Con este fin, mediante la aplicación de nuestro código modificado de evolución estelar se utilizan modelos estelares en el intervalo de masa de 0.1 2.5 para determinar la masa y la masa de edad de las TTS. La función de la masa obtenida se compara con la función de masa de Miller & Scalo (1979). La edad encontrada para las TTS es de alrededor de 1 3 × 106 años y la función de masa es de aproximadamente 0.6440.348. De estos resultados, hemos calculado la tasa de formación estelar como de alrededor de 1.3 × 107 año1 en esta región.
ABSTRACT
In this work the present day mass functions (PDMF) of TTauri Stars (TTS) which are in the premain sequence (PMS) evolutionary phase of their evolution in the TaurusAuriga Molecular Cloud Complex have been calculated. For this purpose, by applying our modified stellar evolutionary code, stellar models in the mass range 0.1 2.5 are used to determine the mass and age mass of TTS. The obtained mass function is compared with the mass function of Miller & Scalo (1979). The age found for TTS is around 1 3 × 106 yr and the mass function is about 0.6440.348. From these results, we have calculated the stellar birthrate as about 1.3 × 107 yr 1 in this region.
Key Words: open clusters and associations: general stars: evolution stars: fundamental parameters stars: premain sequence.
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ACKNOWLEDGMENTS
This work was supported by the Section of Scientic Research Projects (EUBAP) of the Erciyes University, Project number: FBT0536.
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