Search for the suspected brown dwarf companion to Giclas 29-38 using IR-slit-scans

Details Search for the suspected brown dwarf companion to Giclas 29-38 using IR-slit-scans Search for the suspected brown dwarf companion to Giclas 29-38 using IR-slit-scans

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...230...87h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 230, no. 1, April 1990, p. 87-90.

Astronomy and Astrophysics

Astrophysics

6

Brown Dwarf Stars, Companion Stars, White Dwarf Stars, Binary Stars, Infrared Interferometers, Speckle Interferometry

Scientific paper

Near-infrared slit-scan observations indicate that the white dwarf G 29-38 is not a point source but shows a slight north-south extension. The data do not allow inference of the cause producing this extension, but fits with a binary model yield a separation of 0.23 arcsec with a formal standard deviation of + or - 0.04 arcsec for a possible brown dwarf companion. Future observations by means of high resolution imaging techniques seem a promising way to clarify this question.

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