First Determination of the Distance and Fundamental Properties of an Eclipsing Binary in the Andromeda Galaxy

Ribas, I.; Jordi, C.; Vilardell, F.; Fitzpatrick, E. L.; Hilditch, R. W.; Guinan, E. F.

doi:10.1086/499161

Cited by 135 publications

(135 citation statements)

References 25 publications

(32 reference statements)

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“…These results are again consistent with previous studies (Stanek & Garnavich 1998;Ribas et al 2005;Vilardell et al 2006Vilardell et al , 2010Riess et al 2012;Valls-Gabaud 2013). The values of mean distance modulus for M31 Cepheids obtained using both Galaxy and LMC as calibrators are given in Table 11.…”

Section: The Distance To M31supporting

confidence: 93%

Large Magellanic Cloud Near-Infrared Synoptic Survey. Ii. The Wesenheit Relations and Their Application to the Distance Scale

Bhardwaj

Kanbur

Macri

et al. 2016

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Section: The Distance To M31supporting

confidence: 93%

Large Magellanic Cloud Near-Infrared Synoptic Survey. Ii. The Wesenheit Relations and Their Application to the Distance Scale

Bhardwaj

Kanbur

Macri

et al. 2016

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“…Hilditch et al 2005;North et al 2010). Finally, spectroscopy and radial velocities of several EBs in the Andromeda Galaxy (Ribas et al 2005;Vilardell et al 2010a,b) and M33 (Bonanos et al 2006) were obtained, indicating the distance modulus fully compatible with other findings.…”

Section: Introductionsupporting

confidence: 71%

Tracing the structure of the Milky Way with detached eclipsing binaries from the VVV survey – I. The method and initial results★

Hełminiak

Devor

Minniti

et al. 2013

Monthly Notices of the Royal Astronomical Society

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We present the first results of a project aiming to trace the spatial structure of the Milky Way using detached eclipsing binaries (DEBs) as distance indicators. A sample of DEBs from the OGLE-II catalogue was selected and their near infrared photometry was taken from the Vista Variables in the Via Lactea (VVV) survey. The I band OGLE-II light curves are used to create models of the DEBs, which together with the VVV photometry are compared with a set of theoretical isochrones. After correcting for stellar reddening, we find a set of absolute physical parameters of components of a given binary, including absolute magnitudes and distances.With this approach we can calculate the distances with the precision better than 5 per cent. Even though we have a few systems, the distribution is not homogeneous along the line of sight, and appears to follow the overall structure of the Galaxyseveral spiral arms and the Bulge are distinguishable. A number of systems can be seen behind the Bulge, reaching even the distance to the Sagittarius dwarf galaxy.

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“…To our knowledge this is the first use of multi-object A&A 520, A74 (2010) spectroscopy in the field of extragalactic EBs. Recently, even the distance to large spiral galaxies were measured on the basis of two EBs in M31 (Ribas et al 2005;Vilardell et al 2010) and one in M 33 (Bonanos et al 2006).…”

Section: Introductionmentioning

confidence: 99%

VLT multi-object spectroscopy of 33 eclipsing binaries in the Small Magellanic Cloud

North¹,

Gauderon²,

Barblan

et al. 2010

A&A

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Aims. Our purpose is to provide reliable stellar parameters for a significant sample of eclipsing binaries, which are representative of a whole dwarf and metal-poor galaxy. We also aim at providing a new estimate of the mean distance to the SMC and of its depth along the line of sight for the observed field of view. Methods. We use radial velocity curves obtained with the ESO FLAMES facility at the VLT and light curves from the OGLE-II photometric survey. The radial velocities were obtained by least-squares fits of the observed spectra to synthetic ones, excluding the hydrogen Balmer lines. Results. Our sample contains 23 detached, 9 semi-detached and 1 overcontact systems. Most detached systems have properties consistent with stellar evolution calculations from single-star models at the standard SMC metalicity Z = 0.004, though they tend to be slightly overluminous. The few exceptions are probably due to third-light contribution or insufficient signal-to-noise ratio. The mass ratios are consistent with a flat distribution, both for detached and semi-detached/contact binaries. A mass-luminosity relation valid from ∼4 to ∼18 M is derived. The uncertainties are in the ±2 to ±11% range for the masses, in the ±2 to ±5% range for the radii and in the ±1 to ±6% range for the effective temperatures. The average distance modulus is 19.11 ± 0.03 (66.4 ± 0.9 kpc). The moduli derived from the V and from the I data are consistent within 0.01 mag. The 2σ depth of the SMC is, for our field, of 0.25 mag or 7.6 kpc under the assumption of a Gaussian distribution of stars along the line of sight. Three systems show significant apsidal motion, one of them with an apsidal period of 7.6 years, the shortest known to date for a detached system with main sequence stars.

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First Determination of the Distance and Fundamental Properties of an Eclipsing Binary in the Andromeda Galaxy

Cited by 135 publications

References 25 publications

Large Magellanic Cloud Near-Infrared Synoptic Survey. Ii. The Wesenheit Relations and Their Application to the Distance Scale

Large Magellanic Cloud Near-Infrared Synoptic Survey. Ii. The Wesenheit Relations and Their Application to the Distance Scale

Tracing the structure of the Milky Way with detached eclipsing binaries from the VVV survey – I. The method and initial results★

VLT multi-object spectroscopy of 33 eclipsing binaries in the Small Magellanic Cloud

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