J/ApJ/663/573 Sloan gi light curves of HAT-TR-205-012 (Beatty+, 2007)
The mass and radius of the unseen M dwarf companion in the single-lined
eclipsing binary HAT-TR-205-013.
Beatty T.G., Fernandez J.M., Latham D.W., Bakos G.A., Kovacs G.,
Noyes R.W., Stefanik R.P., Torres G., Everett M.E., Hergenrother C.W.
<Astrophys. J., 663, 573-582 (2007)>
=2007ApJ...663..573B 2007ApJ...663..573B
ADC_Keywords: Binaries, eclipsing ; Stars, M-type ; Photometry, SDSS
Keywords: binaries: eclipsing - binaries: spectroscopic -
stars: fundamental parameters - stars: low-mass, brown dwarfs -
stars: rotation
Abstract:
We derive masses and radii for both components in the single-lined
eclipsing binary HAT-TR-205-013, which consists of an F7 V primary
and a late M dwarf secondary. The system's period is short,
P=2.230736±0.000010 days, with an orbit indistinguishable from
circular, e=0.012±0.021. We demonstrate generally that the surface
gravity of the secondary star in a single-lined binary undergoing
total eclipses can be derived from characteristics of the light curve
and spectroscopic orbit.
Description:
The HAT-TR-205-013 system lies in HATnet survey field G205, centered
at RA=22:55, DE=+37:30; 3357 observations were made of this field by
the HATnet telescopes between 2003 October 5 and 2004 January 30.
To provide a high-quality light curve for the analysis of the primary
eclipse of HAT-TR-205-013, we used KeplerCam on the 1.2m telescope at
the Fred L. Whipple Observatory on Mount Hopkins, Arizona. We used the
predicted eclipse times from our spectroscopic orbit to schedule
observations on the night of 2005 October 22-23. We successfully
observed a full eclipse, alternating between the Sloan g and i bands.
Objects:
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RA (2000) DE Designation(s)
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23 08 08.4 +33 38 04 HAT-TR-205-013 = GSC 02755-00036
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 22 297 g Band Photometry
table5.dat 22 588 i Band Photometry
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Byte-by-byte Description of file: table4.dat table5.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d HJD Heliocentric Julian Date of the observation
16- 22 F7.5 --- NFlux Normalized Sloan g- or i- band flux
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 15-Aug-2009