NPARSEC: NTT Parallaxes of Southern Extremely Cool objects. Goals, targets, procedures and first results

Autor:	Smart, R. L., Tinney, C. G., Bucciarelli, B., Marocco, F., Abbas, U., Andrei, A., Bernardi, G., Burningham, B., Cardoso, C., Costa, E., Crosta, M. T., Dapra, M., Day-Jones, A., Goldman, B., Jones, H. R. A., Lattanzi, M. G., Leggett, S. K., Lucas, P., Mendez, R., Penna, J. L., Pinfield, D., Smith, L., Sozzetti, A., Vecchiato, A.
Rok vydání:	2013
Předmět:	Astrophysics - Solar and Stellar Astrophysics Astrophysics - Instrumentation and Methods for Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1093/mnras/stt876
Popis:	The discovery and subsequent detailed study of T dwarfs has provided many surprises and pushed the physics and modeling of cool atmospheres in unpredicted directions. Distance is a critical parameter for studies of these objects to determine intrinsic luminosities, test binarity and measure their motion in the Galaxy. We describe a new observational program to determine distances across the full range of T dwarf sub-types using the NTT/SOFI telescope/instrument combination. We present preliminary results for ten objects, five of which represent new distances. Comment: 11 pages, 6 figrues, accepted by MNRAS
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1306.4527 Zobrazit plný text záznamu View this record from Arxiv