Young stellar objects polarimetry & SPARC4 pipeline

• Grant number: 13/11473-7
• Support Opportunities: Research Grants - Visiting Researcher Grant - International
• Start date: August 01, 2013
• End date: January 31, 2014
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Astronomical Instrumentation
• Principal Investigator: Cláudia Vilega Rodrigues
• Grantee: Cláudia Vilega Rodrigues
• Visiting researcher: Antonio Armstrong Pereyra Quirós
• Visiting researcher institution: Instituto de Astrofísica de Canarias (IAC), Spain
• Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovação (Brasil). São José dos Campos , SP, Brazil

Abstract

In this project we will study the circumstellar envelopes of young stellar objects (YSO) using measurements of near infrared (NIR) polarimetry and Halpha spectropolarimetry. Our aim is to constrain the properties of the polarizing agent which is present in the envelopes of these objects. The asymmetries associated to YSOs, including disks and jets, will be contrasted with the information obtained from the NIR polarimetry and spectropolarimetry trying to constrain the physical properties and geometry of the envelopes. The project includes the analysis and publication of data gathered with the NIR camera CamIV along with the IAGPOL polarimeter at the Pico dos Dias Observatory. In addition, spectropolarimetric data gathered with the ESPaDOnS spectrograph at the Canada France Hawaii Telescope (3.6m) in Hawaii also will be considered.A second part of the project will be the support to the pipeline development of the SPARC4 instrument. In particular, we will schematize the sequence of basics routines needed to gather pre-reduced data after an observation night. We will assess the best way of integration for the available softwares in the different observational modes of SPARC4. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PEREYRA, A.; RODRIGUES, C. V.; MARTIOLI, E.. Measuring the continuum polarization with ESPaDOnS. Astronomy & Astrophysics, v. 573, JAN 2015. (13/11473-7, 10/01584-8)