Absolute properties of the highly eccentric eclipsing binary star LV Herculis (2009)
Torres, Guillermo, Lacy, Claud H. Sandberg, Claret, Antonio
We report extensive spectroscopic and differential V-band photometric observations of the 18.4-day detached double-lined eclipsing binary LV Her (F9V), which has the highest eccentricity (e = 0.613)...
Refined stellar, orbital and planetary parameters of the eccentric HAT-P-2 planetary system (2009)
Pál, András, Bakos, Gáspár Á., Torres, Guillermo, Noyes, Robert W., Fischer, Debra A., Johnson, John A., ...
We present refined parameters for the extrasolar planetary system HAT-P-2 (also known as HD 147506), based on new radial velocity and photometric data. HAT-P-2b is a transiting extrasolar planet that...
Irwin, Jonathan, Charbonneau, David, Berta, Zachory K., Quinn, Samuel N., Latham, David W., Torres, Guillermo, ...
We report the detection of eclipses in GJ 3236, a bright (I = 11.6) very low mass binary system with an orbital period of 0.77 days. Analysis of light- and radial velocity curves of the system...
Mass and radius determinations for five transiting M-dwarf stars (2009)
Fernandez, Jose M., Latham, David W., Torres, Guillermo, Everett, Mark E., Mandushev, Georgi, Charbonneau, David, ...
We have derived masses and radii for both components in five short-period single-lined eclipsing binary stars discovered by the TrES wide-angle photometric survey for transiting planets. All these...
Binary orbit, physical properties, and evolutionary state of Capella (alpha Aurigae) (2009)
Torres, Guillermo, Claret, Antonio, Young, Patrick A.
We report extensive radial-velocity measurements of the two giant components of the detached, 104-day period binary system of Capella. Our highly accurate three-dimensional orbital solution based on...
HR 8257: a three-dimensional orbit and basic properties (2009)
Fekel, Francis C., Boden, Andrew F., Tomkin, Jocelyn, Torres, Guillermo
We have used interferometric and spectroscopic observations of HR 8257 to determine a three-dimensional orbit of the system. The orbit has a period of 12.21345 days and an eccentricity of 0.2895. The...
The Transit Light Curve Project. XII. Six Transits of the Exoplanet XO-2b (2009)
Fernandez, Jose M., Holman, Matthew J., Winn, Joshua N., Torres, Guillermo, Shporer, Avi, Mazeh, Tsevi, ...
We present photometry of six transits of the exoplanet XO-2b. By combining the light-curve analysis with theoretical isochrones to determine the stellar properties, we find the planetary radius to be...
Sozzetti, Alessandro, Torres, Guillermo, Charbonneau, David, Winn, Joshua N., Korzennik, Sylvain G., Holman, Matthew J., ...
We report new spectroscopic and photometric observations of the parent stars of the recently discovered transiting planets TrES-3 and TrES-4. A detailed abundance analysis based on high-resolution...
Absolute properties of the low-mass eclipsing binary CM Draconis (2009)
Morales, Juan Carlos, Ribas, Ignasi, Jordi, Carme, Torres, Guillermo, Gallardo, José, Guinan, Edward F., ...
12 pages, 7 figures.-- ArXiv pre-print available at: http://arxiv.org/abs/0810.1541
Sozzetti, Alessandro, Torres, Guillermo, Charbonneau, David, Winn, Joshua N., Korzennik, Sylvain G., Holman, Matthew J., ...
We report new spectroscopic and photometric observations of the parent stars of the recently discovered transiting planets TrES-3 and TrES-4. A detailed abundance analysis based on high-resolution...
Winn, Joshua N., Holman, Matthew J., Carter, Joshua A., Torres, Guillermo, Osip, David J., Beatty, Thomas
We present photometry of two transits of the giant planet WASP-4b with a photometric precision of 400-800 parts per million and a time sampling of 25-40 seconds. The two midtransit times are...
Latham, David W., Bakos, Gáspár Á., Torres, Guillermo, Stefanik, Robert P., Noyes, Robert W., Kovács, Géza, ...
We report the identification of 32 transiting-planet candidates in HATNet field G205. We describe the procedures that we have used to follow up these candidates with spectroscopic and photometric...
T-Lyr1-17236 : a long-period low-mass eclipsing binary (2008)
Devor, Jonathan, Charbonneau, David, Torres, Guillermo, Blake, Cullen H., White, Russel J., Rabus, Markus, ...
We describe the discovery of a 0.68+0.52 M⊙ eclipsing binary (EB) with an 8.4 day orbital period, found through a systematic search of 10 fields of the Trans-atlantic Exoplanet Survey (TrES). Such...
Absolute dimensions of the F-type eclipsing binary star VZ Cephei (2008)
Torres, Guillermo, Lacy, Claud H. Sandberg
We present new V-band differential photometry and radial-velocity measurements of the unevolved 1.18-day period F+G-type double-lined eclipsing binary VZ Cep. We determine accurate values for the...
The Transit Light Curve Project. X. A Christmas Transit of HD 17156b (2008)
Winn, Joshua N., Holman, Matthew J., Henry, Gregory W., Torres, Guillermo, Fischer, Debra, Johnson, John Asher, ...
Photometry is presented of the Dec. 25, 2007 transit of HD 17156b, which has the longest orbital period and highest orbital eccentricity of all the known transiting exoplanets. New measurements of...
Absolute properties of the spotted eclipsing binary star CV Bootis (2008)
Torres, Guillermo, Vaz, Luiz Paulo R., Lacy, Claud H. Sandberg
We present new V-band differential brightness measurements as well as new radial-velocity measurements of the detached, circular, 0.84-day period, double-lined eclipsing binary system CV Boo. These...
Raghavan, Deepak, McAlister, Harold A., Torres, Guillermo, Latham, David W., Mason, Brian D., Boyajian, Tabetha S., ...
We present an updated spectroscopic orbit and a new visual orbit for the double-lined spectroscopic binary \sigma^2 Coronae Borealis based on radial velocity measurements at the Oak Ridge Observatory...
T-Lyr1-17236: A Long-Period Low-Mass Eclipsing Binary (2008)
Devor, Jonathan, Charbonneau, David, Torres, Guillermo, Blake, Cullen H., White, Russel J., Rabus, Markus, ...
We describe the discovery of a 0.68+0.52 solar mass eclipsing binary (EB) with an 8.4-day orbital period, found through a systematic search of ten fields of the Trans-atlantic Exoplanet Survey...
Pál, András, Bakos, Gáspár Á., Noyes, Robert W., Torres, Guillermo
The recently discovered transiting very hot Jupiter, HAT-P-7b, a planet detected by the telescopes of HATNet, turned out to be among the ones subjected to the highest irradiation from the parent...
Toward a homogeneous set of transiting planet parameters (2008)
Torres, Guillermo, Winn, Joshua N., Holman, Matthew J.
With 40 or more transiting exoplanets now known, the time is ripe to seek patterns and correlations among their observed properties, which may give important insights into planet formation,...
HAT-P-9b: A Low Density Planet Transiting a Moderately Faint F star (2008)
Shporer, Avi, Bakos, Gaspar A., Bouchy, Francois, Pont, Frederic, Kovacs, Geza, Latham, Dave W., ...
We report the discovery of a planet transiting a moderately faint (V=12.3 mag) late F star, with an orbital period of 3.92289 +/- 0.00004 days. From the transit light curve and radial velocity...
Report IAU Comm. 42, Close Binary Stars (2008)
Rucinski, Slavek M., Ribas, Ignasi, Scarfe, Colin D., Torres, Guillermo, Rucinski, Slavek M., Sion, Edward M., ...
Brief summaries are given about (1) close binary research from the perspective of the Bibliography of Close Binaries, (2) low-mass binaries and model discrepancies, (3) W UMa-type binaries, (4)...
The Transit Light Curve Project. IX. Evidence for a Smaller Radius of the Exoplanet XO-3b (2008)
Winn, Joshua N., Holman, Matthew J., Torres, Guillermo, McCullough, Peter, Johns-Krull, Christopher M., Latham, David W., ...
We present photometry of 13 transits of XO-3b, a massive transiting planet on an eccentric orbit. Previous data led to two inconsistent estimates of the planetary radius. Our data strongly favor the...
A Spectroscopic Binary at the M/L Transition (2008)
Blake, Cullen H., Charbonneau, David, White, Russel J., Torres, Guillermo, Marley, Mark S., Saumon, Didier
We report the discovery of a single-lined spectroscopic binary with an Ultra Cool Dwarf (UCD) primary with a spectral type between M8 and L0.5. This system was discovered during the course of an...
Devor, Jonathan, Charbonneau, David, O'Donovan, Francis T., Mandushev, Georgi, Torres, Guillermo
In recent years, we have witnessed an explosion of photometric time-series data, collected for the purpose of finding a small number of rare sources, such as transiting extrasolar planets and...
TrES-1: The Transiting Planet of a Bright K0V Star (2008)
Roi Alonso Timothy, Timothy M. Brown, Guillermo Torres, Davidw. Latham, Georgi M, Juana. Belmonte, ...
Instituto de Astrofsica de Canarias, 38200 La Laguna, Tenerife, SPAIN High Altitude Observatory/National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80307 USA Harvard-Smithsonian...
Devor, Jonathan, Charbonneau, David, O'Donovan, Francis T., Mandushev, Georgi, Torres, Guillermo
In recent years we have witnessed an explosion of photometric time-series data, collected for the purpose of finding a small number of rare sources, such as transiting extrasolar planets and...
Dynamical Masses for Pre-Main-Sequence Stars: A Preliminary Physical Orbit for V773 Tau A (2007)
Boden, Andrew F., Torres, Guillermo, Sargent, Anneila I., Akeson, Rachel L., Carpenter, John M., Boboltz, David A., ...
We report on interferometric and radial velocity observations of the double-lined 51 day period binary (A) component of the quadruple pre-main-sequence (PMS) system V773 Tau. With these observations...
High-resolution spectroscopic follow-up of OGLE planetary (2007)
Transit Candidates In, Maciej Konacki, Guillermo Torres, Dimitar D. Sasselov, Saurabh Jha
We report the results of our campaign to follow-up spectroscopically several candidate extrasolar transiting planets from the OGLE-III survey in the direction of the Galactic center, announced in...
New Data and Improved Parameters for the Transiting Planet OGLE-TR-56b (2007)
Guillermo Torres, Maciej Konacki, Dimitar D. Sasselov, Saurabh Jha
We report new spectroscopic observations of the recently discovered transiting planet OGLE-TR-56b with the Keck/HIRES instrument. Our radial velocity measurements with errors of 100 m s 1 show clear...
Five New Transits of the Super-Neptune HD 149026 (2007)
Winn, Joshua N., Henry, Gregory W., Torres, Guillermo, Holman, Matthew J.
We present new photometry of HD 149026 spanning five transits of its "super-Neptune" planet. In combination with previous data, we improve upon the determination of the planet-to-star radius ratio:...
Knowledge of the stellar parameters for the parent stars of transiting exoplanets is pre-requisite for establishing the planet properties themselves, and often relies on stellar evolution models. GJ...
HIPPARCOS Astrometric Orbit and Evolutionary Status of HR 6046 (2007)
The previously known, 6-yr spectroscopic binary HR 6046 has been speculated in the past to contain a compact object as the secondary. A recent study has re-determined the orbit with great accuracy,...
TrES-4: A Transiting Hot Jupiter of Very Low Density (2007)
Mandushev, Georgi, O'Donovan, Francis T., Charbonneau, David, Torres, Guillermo, Latham, David W., Bakos, Gáspár Á., ...
We report the discovery of TrES-4, a hot Jupiter that transits the star GSC 02620-00648 every 3.55 days. From high-resolution spectroscopy of the star we estimate a stellar effective temperature of...
The Transit Light Curve (TLC) Project. VI. Three Transits of the Exoplanet TrES-2 (2007)
Holman, Matthew J., Winn, Joshua N., Latham, David W., O'Donovan, Francis T., Charbonneau, David, Torres, Guillermo, ...
Of the nearby transiting exoplanets that are amenable to detailed study, TrES-2 is both the most massive and the one with the largest impact parameter. We present z-band photometry of three transits...
A New Low-Mass Eclipsing Binary from SDSS-II (2007)
Blake, Cullen H., Torres, Guillermo, Bloom, Joshua S., Gaudi, B. Scott
We present observations of a new low-mass double-lined eclipsing binary system discovered using repeat observations of the celestial equator from the Sloan Digital Sky Survey II. Using near-infrared...
TrES-3: A Nearby, Massive, Transiting Hot Jupiter in a 31-Hour Orbit (2007)
O'Donovan, Francis T., Charbonneau, David, Bakos, Gáspár Á., Mandushev, Georgi, Dunham, Edward W., Brown, Timothy M., ...
We describe the discovery of a massive transiting hot Jupiter with a very short orbital period (1.30619 d), which we name TrES-3. From spectroscopy of the host star GSC 03089-00929, we measure T_eff...
The Transit Light Curve Project. VI. Three Transits of the Exoplanet TrES-2 (2007)
Holman, Matthew J., Winn, Joshua N., Latham, David W., O'Donovan, Francis T., Charbonneau, David, Torres, Guillermo, ...
Of the nearby transiting exoplanets that are amenable to detailed study, TrES-2 is both the most massive and has the largest impact parameter. We present z-band photometry of three transits of...
Torres, Guillermo, Latham, David W., Stefanik, R. P.
We develop a technique to measure radial velocities of stars from spectra that present four sets of lines. The algorithm is an extension of the two-dimensional cross-correlation method TODCOR to four...
The Mercury-Manganese star Phi Her is a well known spectroscopic binary that has been the subject of a recent study by Zavala et al. (2006), in which they resolved the companion using long-baseline...
A FIVE NEW TRANSITS OF THE SUPER-NEPTUNE HD 149026b (2007)
Joshua N. Winn, Gregory W. Henry, Guillermo Torres, Matthew J. Holman
We present new photometry of HD 149026 spanning five transits of its ‘‘super-Neptune’ ’ planet. In combination with previous data, we improve on the determination of the planet-to-star radius...
Neuhaeuser, Ralph, Mugrauer, Markus, Fukagawa, Misato, Torres, Guillermo, Schmidt, Tobias
The star gamma Cep is known as a single-lined spectroscopic triple system at a distance of 13.8 pc, composed of a K1 III-IV primary star with V = 3.2 mag, a stellar-mass companion in a 66--67 year...
Outcome of Six Candidate Transiting Planets from a TrES Field in Andromeda (2006)
O'Donovan, Francis T., Charbonneau, David, Alonso, Roi, Brown, Timothy M., Mandushev, Georgi, Dunham, Edward W., ...
Driven by the incomplete understanding of the formation of gas giant extrasolar planets and of their mass-radius relationship, several ground-based, wide-field photometric campaigns are searching the...
The bright K1 III-IV star gamma Cep has been reported previously to have a companion in a 2.5-yr orbit that is possibly substellar, and also has a stellar companion at a larger separation that has...
TrES-2: The First Transiting Planet in the Kepler Field (2006)
O'Donovan, Francis T., Charbonneau, David, Mandushev, Georgi, Dunham, Edward W., Latham, David W., Torres, Guillermo, ...
We announce the discovery of the second transiting hot Jupiter discovered by the Trans-atlantic Exoplanet Survey. The planet, which we dub TrES-2, orbits the nearby star GSC 03549-02811 every 2.47063...
O'Donovan, Francis T., Charbonneau, David, Torres, Guillermo, Mandushev, Georgi, Dunham, Edward W., Latham, David W., ...
Ground-based wide-field surveys for nearby transiting gas giants are yielding far fewer true planets than astrophysical false positives, of which some are difficult to reject. Recent experience has...
A Physical Orbit for the High Proper Motion Binary HD 9939 (2006)
Boden, Andrew F., Torres, Guillermo, Latham, David W.
We report spectroscopic and interferometric observations of the high-proper motion double-lined binary system HD 9939, with an orbital period of approximately 25 days. By combining our...
The Multiple System HD 27638 (2005)
We report spectroscopic observations of HD 27638B, the secondary in a visual binary in which the physically associated primary (separation approximately 19 arcsec) is a B9V star. The secondary shows...
Torres, Guillermo, Lacy, Claud H. Sandberg, Marschall, Laurence A., Sheets, Holly A., Mader, Jeff A.
(Abridged) We present spectroscopic and photometric observations of the eclipsing system V1061 Cyg (P = 2.35 days). We show that it is a hierarchical triple in which the third star is visible in the...
The Astrometric-Spectroscopic Binary System HIP 50796: An Overmassive Companion (2005)
We report spectroscopic observations of the star HIP 50796, previously considered (but later rejected) as a candidate member of the TW Hya association. Our measurements reveal it to be a single-lined...
The Transit Light Curve Project. IV. Five Transits of the Exoplanet OGLE-TR-10b (2005)
Holman, Matthew J., Winn, Joshua N., Fuentes, Cesar I., Hartman, Joel D., Stanek, K. Z., Torres, Guillermo, ...
We present I and B photometry of five distinct transits of the exoplanet OGLE-TR-10b. By modeling the light curves, we find the planetary radius to be R_P = 1.06 +/- 0.08 R_Jup and the stellar radius...
Detection of Thermal Emission from an Extrasolar Planet (2005)
Charbonneau, David, Allen, Lori E., Megeath, S. Thomas, Torres, Guillermo, Alonso, Roi, Brown, Timothy M., ...
We present Spitzer Space Telescope infrared photometric time series of the transiting extrasolar planet system TrES-1. The data span a predicted time of secondary eclipse, corresponding to the...
Testing Stellar Models With An Improved Physical Orbit for 12 Bootis (2005)
Boden, Andrew F., Torres, Guillermo, Hummel, Christian A.
We report on a significantly improved determination of the physical orbit of the double-lined spectroscopic binary system 12 Boo. We have a 12 Boo interferometry dataset spanning six years with the...
The Challenge of Wide-Field Transit Surveys: The Case of GSC 01944-02289 (2005)
Mandushev, Georgi, Torres, Guillermo, Latham, David W., Charbonneau, David, Alonso, Roi, White, Russel J., ...
Wide-field searches for transiting extra-solar giant planets face the difficult challenge of separating true transit events from the numerous false positives caused by isolated or blended eclipsing...
Detection of Thermal Emission from an Extrasolar Planet (2005)
David Charbonneau, Lori E. Allen, S. Thomas Megeath, Guillermo Torres, Roi Alonso, Timothy M. Brown, ...
We present Spitzer Space Telescope infrared photometric time series of the transiting extrasolar planet system TrES-1. The data span a predicted time of secondary eclipse, corresponding to the...
A transiting extrasolar giant planet around the star OGLE-TR-10 (2004)
Konacki, Maciej, Torres, Guillermo, Sasselov, Dimitar D., Jha, Saurabh
We report a transiting extrasolar giant planet around the star OGLE-TR-10 (orbital period = 3.1 days), which was uncovered as a candidate by the OGLE team in their photometric survey towards the...
Testing blend scenarios for extrasolar transiting planet candidates. II. -- OGLE-TR-56 (2004)
Torres, Guillermo, Konacki, Maciej, Sasselov, Dimitar D., Jha, Saurabh
We re-examine the photometric and spectroscopic evidence available for the star OGLE-TR-56, recently discovered to harbor a giant planet presenting transits and orbiting with a period of 1.21 days....
TrES-1: The Transiting Planet of a Bright K0V Star (2004)
Alonso, Roi, Brown, Timothy M., Torres, Guillermo, Latham, David W., Sozzetti, Alessandro, Mandushev, Georgi, ...
We report the detection of a transiting Jupiter-sized planet orbiting a relatively bright (V=11.79) K0V star. We detected the transit light-curve signature in the course of the TrES multi-site...
Torres, Guillermo, Konacki, Maciej, Sasselov, Dimitar D., Jha, Saurabh
We report high-resolution spectroscopic follow-up observations of the faint transiting planet candidate OGLE-TR-33 (V = 14.7), located in the direction of the Galactic center. Small changes in the...
Torres, Guillermo, Konacki, Maciej, Sasselov, Dimitar D., Jha, Saurabh
In early 2003 our team announced the discovery of the second extrasolar transiting planet, around the faint star OGLE-TR-56 (V = 16.6), based on the detection of small changes in the radial velocity...
A transiting extrasolar giant planet around the star OGLE-TR-113 (2004)
Konacki, Maciej, Torres, Guillermo, Sasselov, Dimitar D., Pietrzynski, Grzegorz, Udalski, Andrzej, Jha, Saurabh, ...
We report the independent discovery of a new extrasolar transiting planet around OGLE-TR-113, a candidate star from the Optical Gravitational Lensing Experiment. Small radial-velocity variations have...
Combining Astrometry and Spectroscopy (2003)
Orbital solutions for binary or multiple stellar systems that combine astrometry (e.g., position angles and angular separations) with spectroscopy (radial velocities) have important advantages over...
A double-lined spectroscopic orbit for the young star HD 34700 (2003)
We report high-resolution spectroscopic observations of the young star HD 34700, which confirm it to be a double-lined spectroscopic binary. We derive an accurate orbital solution with a period of...
New Data and Improved Parameters for the Transiting Planet OGLE-TR-56b (2003)
Torres, Guillermo, Konacki, Maciej, Sasselov, Dimitar D., Jha, Saurabh
We report new spectroscopic observations of the recently discovered transiting planet OGLE-TR-56b with the Keck/HIRES instrument. Our radial velocity measurements with errors of ~100 m/s show clear...
Konacki, Maciej, Torres, Guillermo, Sasselov, Dimitar D., Jha, Saurabh
We report the results of our campaign to follow-up spectroscopically several candidate extrasolar transiting planets from the OGLE-III survey in the direction of the Galactic center, announced in...
Torres, Guillermo, Mader, Jeff A., Marschall, Laurence A., Neuhaeuser, Ralph, Duffy, Alaine S.
We present new photometric observations in the BVRI bands of the double-lined eclipsing binary BD+05 706 conducted over three observing seasons, as well as new X-ray observations obtained with the...
Radial velocity survey of members and candidate members of the TW Hydrae association (2003)
Torres, Guillermo, Guenther, Eike W., Marschall, Laurence A., Neuhäuser, Ralph, Latham, David W., Stefanik, Robert P.
We report spectroscopic observations of stars belonging to the young nearby group known as the TW Hydrae association, as well as of a number of potential members of the association identified in...
Radial-velocity survey of members and candidate members of the TW Hydrae association (2002)
Torres, Guillermo, Guenther, Eike W., Marschall, Laurence A., Neuhaeuser, Ralph, Latham, David W., Stefanik, Robert P.
We report our spectroscopic observations of stars belonging to the young nearby group known as the TW Hydrae association, as well as of a number of potential members of the association identified in...
Torres, Guillermo, Boden, Andrew F., Latham, David W., Pan, Margaret, Stefanik, Robert P.
We report spectroscopic and interferometric observations of the moderately metal-poor double-lined binary system HD 195987, with an orbital period of 57.3 days. By combining our radial-velocity and...
Torres, Guillermo, Neuhäuser, Ralph, Guenther, Eike W.
We report the results of our radial velocity monitoring of spectroscopic binary systems in a sample of X-ray sources from the ROSAT All Sky Survey south of the Taurus-Auriga star- forming region. The...
Preparing for the VLTI: a search for pre-main sequence spectroscopic binaries (2002)
Guenther, Eike, Joergens, Viki, Torres, Guillermo, Neuhäuser, Ralph, Fernandez, Matilde, Mundt, Reinhard
Preparing for the VLTI: A Search for Pre-Main Sequence Spectroscopic Binaries (2002)
Guenther, Eike, Joergens, Viki, Torres, Guillermo, Neuhäuser, Ralph, Fernández, Matilde, Mundt, Reinhard
El judo en la educación física escolar : unidades didácticas (2002)
Villamón Herrera, Miguel, Brousse, Michel, Carratala, Vicente, Castarlenas, Josep Ll., Pere Molina, J., Mansilla, Mirella, ...
Se presenta una propuesta práctica para la enseñanza del judo en el contexto escolar español. Está estructurada en tres niveles: la aceptación del contacto corporal a través de actividades que...
Torres, Guillermo, Neuhaeuser, Ralph, Guenther, Eike W.
We report the results of our radial-velocity monitoring of spectroscopic binary systems in a sample of X-ray sources from the ROSAT All Sky Survey south of the Taurus-Auriga star-forming region. The...
Torres, Guillermo, Ribas, Ignasi
We present new spectroscopic observations of the detached late-type double-lined eclipsing binary YY Gem, a member of the Castor sextuple system and one of the benchmarks for the comparison between...
Radial-Velocity Monitoring of Members and Candidate Members of the TW Hydrae Association (2001)
Torres, Guillermo, Neuhaeuser, Ralph, Latham, David W.
We present our spectroscopic measurements of the radial velocity, effective temperature, and projected rotational velocity of several of the known members of the TW Hya association, as well as...
Studies of multiple stellar systems - IV. The triple-lined spectroscopic system Gliese 644 (2001)
Mazeh, Tsevi, Latham, David W., Goldberg, Elad, Torres, Guillermo, Stefanik, Robert P., Henry, Todd J., ...
We present a radial-velocity study of the triple-lined system Gliese 644 and derive spectroscopic elements for the inner and outer orbits with periods of 2.9655 and 627 days. We also utilize old...
The change in the inclination angle of the non-eclipsing binary SS Lacertae: future eclipses (2000)
Eclipses in the 14.4-day period double-lined binary SS Lac were observed photographically and visually early in the 20th century, but stopped some 50 or 60 years ago. This has been explained by the...
Jha, Saurabh, Torres, Guillermo, Stefanik, Robert P., Latham, David W., Mazeh, Tsevi
The triple-lined spectroscopic triple system HD 109648 has one of the shortest periods known for the outer orbit in a late-type triple, 120.5 days, and the ratio between the periods of the outer and...