An IPHAS-based search for accreting very low-mass objects using VO tools

Details An IPHAS-based search for accreting very low-mass objects using VO tools An IPHAS-based search for accreting very low-mass objects using VO tools

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009mavo.proc..175v&link_type=abstract

Multi-wavelength Astronomy and Virtual Observatory, Proceedings of the EURO-VO Workshop, held at the European Space Astronomy Ce

Astronomy and Astrophysics

Astronomy

Scientific paper

We prove that accreting very low-mass (VLM) stars and brown dwarfs (BDs) can be identified in IPHAS, an Hα emission survey of the northern Milky Way. Full exploitation of the IPHAS database and a future extension of it in the southern hemisphere will be useful in identifying VLM accreting objects near to and far from well-known star-forming regions. We have used Virtual Observatory (VO) tools to cross-match the IPHAS catalogue with the 2MASS catalogue. We defined photometric criteria to identify Hα emission sources with near-infrared colours similar to those of known young VLM stars and BDs. 4000 candidates were identified that met our criteria over an area of 1600 square degrees.

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