TIC 278956474: Two Close Binaries in One Young Quadruple System Identified by TESS

Pamela Rowden; Tamás Borkovits; Jon M. Jenkins; Keivan G. Stassun; Joseph D. Twicken; Elisabeth R. Newton; Carl Ziegler; Coel Hellier; Aylin Garcia Soto; Elisabeth C. Matthews; Ulrich Kolb; George R. Ricker; Roland Vanderspek; David W. Latham; S. Seager; Joshua N. Winn; Luke G. Bouma; César Brice&ntilde;o; David Charbonneau; William Fong; Ana Glidden; Natalia M. Guerrero; Nicholas Law; Andrew W. Mann; Mark E. Rose; Joshua Schlieder; Peter Tenenbaum; Eric B. Ting

doi:10.3847/1538-3881/ab9d20

TIC 278956474: Two Close Binaries in One Young Quadruple System Identified by TESS

Pamela Rowden, Tamás Borkovits, Jon M. Jenkins, Keivan G. Stassun, Joseph D. Twicken, Elisabeth R. Newton, Carl Ziegler, Coel Hellier, Aylin Garcia Soto, Elisabeth C. Matthews, Ulrich Kolb, George R. Ricker, Roland Vanderspek, David W. Latham, S. Seager, Joshua N. Winn, Luke G. Bouma, César Briceño, David Charbonneau, William FongAna Glidden, Natalia M. Guerrero, Nicholas Law, Andrew W. Mann, Mark E. Rose, Joshua Schlieder, Peter Tenenbaum, Eric B. Ting

Astrophysical Sciences

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Abstract

We have identified a quadruple system with two close eclipsing binaries in Transiting Exoplanet Survey Satellite (TESS) data. The object is unresolved in Gaia and appears as a single source at parallax 1.08 ± 0.01 mas. Both binaries have observable primary and secondary eclipses and were monitored throughout TESS Cycle 1 (sectors 1-13), falling within the TESS Continuous Viewing Zone. In one eclipsing binary (P = 5.488 days), the smaller star is completely occluded by the larger star during the secondary eclipse; in the other (P = 5.674 days) both eclipses are grazing. Using these data, spectroscopy, speckle photometry, spectral energy distribution analysis, and evolutionary stellar tracks, we have constrained the masses and radii of the four stars in the two eclipsing binaries. The Li i equivalent width indicates an age of 10-50 Myr and, with an outer period of 858+7-5 days, our analysis indicates this is one of the most compact young 2 + 2 quadruple systems known.

Original language	English (US)
Article number	76
Journal	Astronomical Journal
Volume	160
Issue number	2
DOIs	https://doi.org/10.3847/1538-3881/ab9d20
State	Published - Aug 2020

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Rowden, P., Borkovits, T., Jenkins, J. M., Stassun, K. G., Twicken, J. D., Newton, E. R., Ziegler, C., Hellier, C., Soto, A. G., Matthews, E. C., Kolb, U., Ricker, G. R., Vanderspek, R., Latham, D. W., Seager, S., Winn, J. N., Bouma, L. G., Briceño, C., Charbonneau, D., ... Ting, E. B. (2020). TIC 278956474: Two Close Binaries in One Young Quadruple System Identified by TESS. Astronomical Journal, 160(2), Article 76. https://doi.org/10.3847/1538-3881/ab9d20

@article{4690582ae9984c93a5caa77eb637fc49,

title = "TIC 278956474: Two Close Binaries in One Young Quadruple System Identified by TESS",

abstract = "We have identified a quadruple system with two close eclipsing binaries in Transiting Exoplanet Survey Satellite (TESS) data. The object is unresolved in Gaia and appears as a single source at parallax 1.08 ± 0.01 mas. Both binaries have observable primary and secondary eclipses and were monitored throughout TESS Cycle 1 (sectors 1-13), falling within the TESS Continuous Viewing Zone. In one eclipsing binary (P = 5.488 days), the smaller star is completely occluded by the larger star during the secondary eclipse; in the other (P = 5.674 days) both eclipses are grazing. Using these data, spectroscopy, speckle photometry, spectral energy distribution analysis, and evolutionary stellar tracks, we have constrained the masses and radii of the four stars in the two eclipsing binaries. The Li i equivalent width indicates an age of 10-50 Myr and, with an outer period of 858+7-5 days, our analysis indicates this is one of the most compact young 2 + 2 quadruple systems known.",

author = "Pamela Rowden and Tam{\'a}s Borkovits and Jenkins, {Jon M.} and Stassun, {Keivan G.} and Twicken, {Joseph D.} and Newton, {Elisabeth R.} and Carl Ziegler and Coel Hellier and Soto, {Aylin Garcia} and Matthews, {Elisabeth C.} and Ulrich Kolb and Ricker, {George R.} and Roland Vanderspek and Latham, {David W.} and S. Seager and Winn, {Joshua N.} and Bouma, {Luke G.} and C{\'e}sar Briceño and David Charbonneau and William Fong and Ana Glidden and Guerrero, {Natalia M.} and Nicholas Law and Mann, {Andrew W.} and Rose, {Mark E.} and Joshua Schlieder and Peter Tenenbaum and Ting, {Eric B.}",

year = "2020",

month = aug,

doi = "10.3847/1538-3881/ab9d20",

language = "English (US)",

volume = "160",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "2",

}

Rowden, P, Borkovits, T, Jenkins, JM, Stassun, KG, Twicken, JD, Newton, ER, Ziegler, C, Hellier, C, Soto, AG, Matthews, EC, Kolb, U, Ricker, GR, Vanderspek, R, Latham, DW, Seager, S, Winn, JN, Bouma, LG, Briceño, C, Charbonneau, D, Fong, W, Glidden, A, Guerrero, NM, Law, N, Mann, AW, Rose, ME, Schlieder, J, Tenenbaum, P & Ting, EB 2020, 'TIC 278956474: Two Close Binaries in One Young Quadruple System Identified by TESS', Astronomical Journal, vol. 160, no. 2, 76. https://doi.org/10.3847/1538-3881/ab9d20

TY - JOUR

T1 - TIC 278956474

T2 - Two Close Binaries in One Young Quadruple System Identified by TESS

AU - Rowden, Pamela

AU - Borkovits, Tamás

AU - Jenkins, Jon M.

AU - Stassun, Keivan G.

AU - Twicken, Joseph D.

AU - Newton, Elisabeth R.

AU - Ziegler, Carl

AU - Hellier, Coel

AU - Soto, Aylin Garcia

AU - Matthews, Elisabeth C.

AU - Kolb, Ulrich

AU - Ricker, George R.

AU - Vanderspek, Roland

AU - Latham, David W.

AU - Seager, S.

AU - Winn, Joshua N.

AU - Bouma, Luke G.

AU - Briceño, César

AU - Charbonneau, David

AU - Fong, William

AU - Glidden, Ana

AU - Guerrero, Natalia M.

AU - Law, Nicholas

AU - Mann, Andrew W.

AU - Rose, Mark E.

AU - Schlieder, Joshua

AU - Tenenbaum, Peter

AU - Ting, Eric B.

PY - 2020/8

Y1 - 2020/8

N2 - We have identified a quadruple system with two close eclipsing binaries in Transiting Exoplanet Survey Satellite (TESS) data. The object is unresolved in Gaia and appears as a single source at parallax 1.08 ± 0.01 mas. Both binaries have observable primary and secondary eclipses and were monitored throughout TESS Cycle 1 (sectors 1-13), falling within the TESS Continuous Viewing Zone. In one eclipsing binary (P = 5.488 days), the smaller star is completely occluded by the larger star during the secondary eclipse; in the other (P = 5.674 days) both eclipses are grazing. Using these data, spectroscopy, speckle photometry, spectral energy distribution analysis, and evolutionary stellar tracks, we have constrained the masses and radii of the four stars in the two eclipsing binaries. The Li i equivalent width indicates an age of 10-50 Myr and, with an outer period of 858+7-5 days, our analysis indicates this is one of the most compact young 2 + 2 quadruple systems known.

AB - We have identified a quadruple system with two close eclipsing binaries in Transiting Exoplanet Survey Satellite (TESS) data. The object is unresolved in Gaia and appears as a single source at parallax 1.08 ± 0.01 mas. Both binaries have observable primary and secondary eclipses and were monitored throughout TESS Cycle 1 (sectors 1-13), falling within the TESS Continuous Viewing Zone. In one eclipsing binary (P = 5.488 days), the smaller star is completely occluded by the larger star during the secondary eclipse; in the other (P = 5.674 days) both eclipses are grazing. Using these data, spectroscopy, speckle photometry, spectral energy distribution analysis, and evolutionary stellar tracks, we have constrained the masses and radii of the four stars in the two eclipsing binaries. The Li i equivalent width indicates an age of 10-50 Myr and, with an outer period of 858+7-5 days, our analysis indicates this is one of the most compact young 2 + 2 quadruple systems known.

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U2 - 10.3847/1538-3881/ab9d20

DO - 10.3847/1538-3881/ab9d20

M3 - Article

AN - SCOPUS:85089832555

SN - 0004-6256

VL - 160

JO - Astronomical Journal

JF - Astronomical Journal

IS - 2

M1 - 76

ER -

TIC 278956474: Two Close Binaries in One Young Quadruple System Identified by TESS

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