Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/WolszczantagA2776tp.pdf Дата изменения: Thu Sep 20 00:06:02 2012 Дата индексирования: Sat Mar 1 02:13:25 2014 Кодировка: Поисковые слова: http astrokuban.info astrokuban

Proposal Identification No.:

A2776

Date Received:

2012-Sep-04 13:39:29

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Continuum Galactic 170 Hours 2 hours

A continuation of the Arecibo survey of ultracool dwarfs

We have been interested in exploring the brown dwarf - massive planet boundary using magnetic fields as a diagnostic tool. A possibility to probe magnetic fields of the coolest, lowest-mass dwarfs may shed new light on the much debated transition from brown dwarfs to planets, the associated differences in structure, and the most proper way to distinguish between these two types of ob jects. In addition, magnetic field detections in the coolest dwarfs indicate that they may also be detectable in hot, young, but less massive exoplanets, which would have very interesting consequences for studies of planetary habitability. Encouraged by the results of our previous surveys (detection of flares from two ultracool dwarfs), we propose to continue this program using the Arecibo telescope with the S-band "high" and C-band receivers, and the Mock spectrometer to search for flares from a list of 40 recently discovered brown dwarf targets.

Name Alexander Wolszczan

Institution Penn State University

E-mail alex@astro.psu.edu

Phone 814 863 1756

Student no

Remote Observing Request

Observer will travel to AO X Remote Observing In Absentia (instructions to operator)

Instrument Setup
C S-high

Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none 1


RFI Considerations Frequency Ranges Planned

2