Browsing by Author "Brahm, R."

Now showing 1 - 20 of 29
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    A 0.24+0.18 M-circle dot double-lined eclipsing binary from the HATSouth survey
    (2015) Zhou, G.; Bayliss, D.; Hartman, J.; Rabus, Markus; Bakos, G.; Jordán Colzani, Andrés Cristóbal; Brahm, R.; Penev, K.; Csubry, Z.; Mancini, L.; Espinoza, N.; De Val-Borro, M.; Bhatti, W.; Ciceri, S.; Henning, T.; Schmidt, B.; Murphy, S.; Butler, R.; Suc, V.
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    A high obliquity orbit for the hot-jupiter Hats-14b Transiting A 5400 K Star
    (2015) Zhou, G.; Bayliss, D.; Hartman, J. D.; Fulton, B. J.; Bakos, G. Á.; Howard, A. W.; Isaacson, H.; Marcy, G. W.; Schmidt, B. P.; Jordán Colzani, Andrés Cristóbal; Brahm, R.
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    A Highly Eccentric Warm Jupiter Orbiting TIC 237913194
    (2020) Schlecker, M.; Kossakowski, D.; Brahm, R.; Espinoza, N.; Henning, T.; Carone, L.; Molaverdikhani, K.; Trifonov, T.; Molliere, P.; Rojas Henriquez, Felipe Ignacio; Hobson, M. J.; Jordán Colzani, Andrés Cristóbal; Klahr, H.; Sarkis, P.; Bakos, G. A.; Bhatti, W.; Osip, D.; Suc, V.; Ricker, G.; Vanderspek, R.; Latham, D. W.; Seager, S.; Winn, J. N.; Jenkins, J. M.; Vezie, M.; Villasenor, J. N.; Rose, M. E.; Rodríguez, D. R.; Rodríguez, J. E.; Quinn, S. N.; Shporer, A.
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    Four Jovian planets around low-luminosity giant stars observed by the EXPRESS and PPPS
    (2021) Jones, M. I.; Wittenmyer, R.; Aguilera-Gomez, C.; Soto, M. G.; Torres, P.; Trifonov, T.; Jenkins, J. S.; Zapata, A.; Sarkis, P.; Zakhozhay, O.; Brahm, R.; Ramirez, R.; Santana, F.; Vines, J. I.; Diaz, M. R.; Vuckovic, M.; Pantoja, B.
    We report the discovery of planetary companions orbiting four low-luminosity giant stars with M-star between 1.04 and 1.39 M-circle dot. All four host stars have been independently observed by the EXoPlanets aRound Evolved StarS (EXPRESS) program and the Pan-Pacific Planet Search (PPPS). The companion signals were revealed by multi-epoch precision radial velocities obtained in nearly a decade. The planetary companions exhibit orbital periods between similar to 1.2 and 7.1 yr, minimum masses of m(p)sin i similar to 1.8-3.7 M-J, and eccentricities between 0.08 and 0.42. With these four new systems, we have detected planetary companions to 11 out of the 37 giant stars that are common targets in the EXPRESS and PPPS. After excluding four compact binaries from the common sample, we obtained a fraction of giant planets (m(p) greater than or similar to 1- 2 M-J) orbiting within 5 AU from their parent star of f = 33.3(-7.1)(+9.0)%. This fraction is slightly higher than but consistent at the 1 sigma level with previous results obtained by different radial velocity surveys. Finally, this value is substantially higher than the fraction predicted by planet formation models of gas giants around stars more massive than the Sun.
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    Four new planets around giant stars and the mass-metallicity correlation of planet-hosting stars
    (2016) Jones Fernández, Matías Ignacio; Jenkins, J.; Brahm, R.; Wittenmyer, R; Olivares, F.; Melo, C.; Rojo, P.; Jordán Colzani, Andrés Cristóbal; Drass, Holger; Butler, R.; Wang, L.
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    HATS-11B AND HATS-12B : TWO TRANSITING HOT JUPITERS ORBITING SUBSOLAR METALLICITY STARS SELECTED FOR THE K2 CAMPAIGN 7
    (2016) Rabus, Markus; Jordán Colzani, Andrés Cristóbal; Hartman, J.; Bakos, G.; Espinoza, N.; Brahm, R.; Penev, K.; Ciceri, S.; Zhou, G.; Bayliss, D.; Mancini, L.; Bhatti, W.; De Val-Borro, M.; Csbury, Z.; Sato, B.; Tan,T.; Henning, T.; Schmidt, B.
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    HATS-13b and HATS-14b: two transiting hot Jupiters from the HATSouth survey
    (2015) Mancini, L.; Hartman, J.; Penev, K.; Bakos, G.; Brahm, R.; Ciceri S.; Henning, T.; Csubry, Z.; Bayliss, D.; Jordán Colzani, Andrés Cristóbal; Zhou, G.; Rabus, Markus; De Val-Borro, M.; Espinoza, N.; Suc, V.; Bhatti, W.; Schmidt, B.; Sato, B.
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    HATS-15b and HATS-16b : Two Massive Planets Transiting Old G Dwarf Stars
    (2016) Brahm, R.; Rabus, Markus; Espinoza, N.; Suc, V.; Ciceri, S.; Mancini, L.; Henning, T.; Bakos, G.; Penev, K.; Jordán Colzani, Andrés Cristóbal; Zhou, G.; Hartman, J.; Bayliss, D.; Csubry, Z.; De Val, M.; Bhatti, W.; Schmidt, B.; Noyes, R.; Howard, A.; Fulton, B.
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    HATS-17b : A TRANSITING COMPACT WARM JUPITER IN A 16.3 DAY CIRCULAR ORBIT
    (2016) Brahm, R.; Jordán Colzani, Andrés Cristóbal; Bakos G.; Penev K.; Espinoza Pérez, Néstor; Rabus, Markus; Hartman J.; Bayliss D.; Ciceri S.; Zhou G.; Mancini, L.; Tan, T.; De Val, M.; Bhatti, W.; Csubry, Z.; Henning, T.; Schmidt, B; Rojas, F.; Suc, V.; Lazar, J.; Papp, I.; Sari, P.
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    HATS-18B : AN EXTREME SHORT-PERIOD MASSIVE TRANSITING PLANET SPINNING UP ITS STAR
    (2016) Penev, K.; Hartman, J.; Bakos, G.; Ciceri, S.; Brahm, R.; Bayliss, D.; Bento, J.; Jordán Colzani, Andrés Cristóbal; Csubry, Z.; Bhatti, W.; De Val-Borro, M.; Espinoza, N.; Zhou, G.; Mancini, L.; Rabus, Markus; Suc, V.
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    HATS-1b: The first transiting planet discovered by the HATSouth survey
    (2013) Penev, K.; Bakos, G.; Bayliss, D.; Jordán Colzani, Andrés Cristóbal; Mohler, M.; Zhou, G.; Suc, V.; Rabus, Markus; Brahm, R.; Espinoza, N.
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    HATS-25B THROUGH HATS-30B: A HALF-DOZEN NEW INFLATED TRANSITING HOT JUPITERS FROM THE HATSOUTH SURVEY
    (2016) Espinoza, N.; Bayliss, D.; Hartman, J. D.; Bakos, G. A.; Jordán Colzani, Andrés Cristóbal; Zhou, G.; Mancini, L.; Brahm, R.; Ciceri, S.; Bhatti, W.; Csubry, Z.; Rabus, Markus; Penev, K.; Bento, J.; De Val-Borro, M.; Henning, T; Schmidt, B.; Suc, V.; Wright, D. J.; Tinney, C. G.; Tan, T. G.; Noyes, R.
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    HATS-2b: A transiting extrasolar planet orbiting a K-type star showing starspot activity
    (2013) Mohler-Fischer, M.; Mancini, L.; Hartman, J. D.; Bakos, G. A.; Penev, K.; Bayliss, D.; Jordan, A.; Csubry, Z.; Zhou, G.; Rabus, M.; Nikolov, N.; Brahm, R.; Espinoza, N.; Buchhave, L. A.; Beky, B.; Suc, V.; Csak, B.; Henning, T.; Wright, D. J.; Tinney, C. G.; Addison, B. C.; Schmidt, B.; Noyes, R. W.; Papp, I.; Lazar, J.; Sari, P.; Conroy, P.
    We report the discovery of HATS-2b, the second transiting extrasolar planet detected by the HATSouth survey. HATS-2b is moving on a circular orbit around a V = 13.6 mag, K-type dwarf star (GSC 6665-00236), at a separation of 0.0230 +/- 0.0003 AU and with a period of 1.3541 days. The planetary parameters have been robustly determined using a simultaneous fit of the HATSouth, MPG/ESO 2.2m/GROND, Faulkes Telescope South/Spectral transit photometry, and MPG/ESO 2.2m/FEROS, Euler 1.2m/CORALIE, AAT 3.9m/CYCLOPS radial-velocity measurements. HATS-2b has a mass of 1.37 +/- 0.16 MJ, a radius of 1.14 +/- 0.03 RJ, and an equilibrium temperature of 1567 +/- 30 K. The host star has a mass of 0.88 +/- 0.04 M fi and a radius of 0.89 +/- 0.02 R fi, and it shows starspot activity. We characterized the stellar activity by analyzing two photometric follow-up transit light curves taken with the GROND instrument, both obtained simultaneously in four optical bands (covering the wavelength range of 3860 9520 angstrom). The two light curves contain anomalies compatible with starspots on the photosphere of the host star along the same transit chord.
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    HATS-31B THROUGH HATS-35B : FIVE TRANSITING HOT JUPITERS DISCOVERED BY THE HATSOUTH SURVEY
    (2016) De Val-Borro, M.; Bakos, G.; Brahm, R.; Hartman, J.; Espinoza, N.; Penev, K.; Ciceri, S.; Jordán Colzani, Andrés Cristóbal; Bhatti, W.; Csubry, Z.; Bayliss, D.; Bento, J.; Zhou, G.; Rabus, Markus; Mancini, L.; Suc, V.
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    HATS-4b : A DENSE HOT JUPITER TRANSITING A SUPER METAL-RICH G STAR
    (2014) Jordán Colzani, Andrés Cristóbal; Brahm, R.; Suc, V.; Espinoza, N.; Bakos, G.; Bayliss, D.; Penev, K.; Rabus, Markus
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    HATS-5b : A TRANSITING HOT SATURN FROM THE HATSouth SURVEY
    (2014) Zhou, G.; Bayliss, D.; Penev, K.; Bakos, G. A.; Hartman, J. D.; Jordán Colzani, Andrés Cristóbal; Mancini, L.; Mohler, M.; Csubry, Z.; Ciceri, S.; Brahm, R.; Rabus, Markus
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    HATS-6b: A warm Saturn transiting an early M dwarf star, and a set of empirical relations for characterizing K and M dwarf planet hosts
    (2015) Hartman, J. D.; Bayliss, D.; Brahm, R.; Bakos, G. Á.; Mancini, L.; Jordán Colzani, Andrés Cristóbal; Penev, K.; Rabus, Markus; Zhou, G.; Butler, R. P.; Espinoza, N.; de Val-Borro, M.; Bhatti, W.; Csubry, Z.; Ciceri, S.; Henning, T.; Schmidt, B.; Arriagada, P.; Shectman, S.; Crane, J.; Thompson, I.; Suc, V.; Csák, B.; Tan, T. G.; Noyes, R. W.; Lázár, J.; Papp, I.; Sári, P.
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    HATS-7b : A HOT SUPER NEPTUNE TRANSITING A QUIET K DWARF STAR
    (2015) Bakos, G. Á.; Penev, K.; Bayliss, D.; Hartman, J. D.; Zhou, G.; Brahm, R.; Mancini, L.; De Val-Borro, M.; Bhatti, W.; Jordán Colzani, Andrés Cristóbal; Rabus, Markus; Espinoza, N.; Csubry, Z.; Howard, A.; Fulton, B.; Suc, V.
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    HATS-8b: A LOW-DENSITY TRANSITING SUPER-NEPTUNE
    (2015) Bayliss, D.; Hartman, J.; Bakos, G.; Penev, K.; Zhou, G.; Brahm, R.; Rabus, Markus; Jordán Colzani, Andrés Cristóbal; Mancini, L.; De Val-Borro, M.; Bhatti, W.; Espinoza, N.; Csubry, Z.; Howard, A.; Fulton, B.; Buchhave, L.; Henning, T.; Schmidt, B.; Suc, V.
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    HATS9-b AND HATS10-b : TWO COMPACT HOT JUPITERS IN FIELD 7 OF THE K2 MISSION
    (2015) Brahm, R.; Jordán Colzani, Andres Cristóbal; Hartman, J. D.; Bakos, G. Á.; Bayliss, D.; Penev, K.; Zhou, G.; Ciceri, S.; Rabus, Markus; Espinoza, N.; Mancini, L.; De Val-Borro, M.; Bhatti, W.; Sato, B.; Tan, T. G.; Csubry, Z.; Buchhave, L.; Henning, T.; Schmidt, B.; Suc, V.; Noyes, R. W.; Papp, I.; Lázár, J.; Sári, P.; Brahm, R.; Jordán Colzani, Andrés Cristóbal; Hartman, J. D.; Bakos, G. Á.; Bayliss, D.; Penev, K.; Zhou, G.; Ciceri, S.; Rabus, Markus; Espinoza, N.; Mancini, L.; De Val-Borro, M.; Bhatti, W.; Sato, B.; Tan, T. G.; Csubry, Z.; Buchhave, L.; Henning, T.; Schmidt, B.; Suc, V.; Noyes, R. W.; Papp, I.; Lázár, J.; Sári, P.