Browsing by Author "Schmidt, B."

Now showing 1 - 12 of 12
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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 NEW POPULATION OF ULTRA-LONG DURATION GAMMA-RAY BURSTS
    (IOP PUBLISHING LTD, 2014) Levan, A. J.; Tanvir, N. R.; Starling, R. L. C.; Wiersema, K.; Page, K. L.; Perley, D. A.; Schulze, S.; Wynn, G. A.; Chornock, R.; Hjorth, J.; Cenko, S. B.; Fruchter, A. S.; O'Brien, P. T.; Brown, G. C.; Tunnicliffe, R. L.; Malesani, D.; Jakobsson, P.; Watson, D.; Berger, E.; Bersier, D.; Cobb, B. E.; Covino, S.; Cucchiara, A.; de Ugarte Postigo, A.; Fox, D. B.; Gal Yam, A.; Goldoni, P.; Gorosabel, J.; Kaper, L.; Kruehler, T.; Karjalainen, R.; Osborne, J. P.; Pian, E.; Sanchez Ramirez, R.; Schmidt, B.; Skillen, I.; Tagliaferri, G.; Thoene, C.; Vaduvescu, O.; Wijers, R. A. M. J.; Zauderer, B. A.
    We present comprehensive multiwavelength observations of three gamma-ray bursts (GRBs) with durations of several thousand seconds. We demonstrate that these events are extragalactic transients; in particular, we resolve the long-standing conundrum of the distance of GRB 101225A (the "Christmas-day burst"), finding it to have a redshift z = 0.847 and showing that two apparently similar events (GRB 111209A and GRB 121027A) lie at z = 0.677 and z = 1.773, respectively. The systems show extremely unusual X-ray and optical light curves, very different from classical GRBs, with long-lasting, highly variable X-ray emission and optical light curves that exhibit little correlation with the behavior seen in the X-ray. Their host galaxies are faint, compact, and highly star-forming dwarf galaxies, typical of "blue compact galaxies." We propose that these bursts are the prototypes of a hitherto largely unrecognized population of ultra-long GRBs, which while observationally difficult to detect may be astrophysically relatively common. The long durations may naturally be explained by the engine-driven explosions of stars of much larger radii than normally considered for GRB progenitors, which are thought to have compact Wolf-Rayet progenitor stars. However, we cannot unambiguously identify supernova signatures within their light curves or spectra. We also consider the alternative possibility that they arise from the tidal disruption of stars by massive black holes and conclude that the associated timescales are only consistent with the disruption of compact stars (e. g., white dwarfs) by black holes of relatively low mass (<10(5) M-circle dot).
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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-22b, HATS-23b and HATS-24b: three new transiting super-Jupiters from the HATSouth project
    (2017) Bento, J.; Schmidt, B.; Hartman, J. D.; Bakos, G. Á.; Ciceri, S.; Bayliss, D.; Espinza, N.; Jordán Colzani, Andrés Cristóbal; Brahm Scott, Rafael; Rabus, Markus; Espinoza, N.; Zhou, G.; Bhatti, W.; Penev, K.; Csubry, Z.; Mancini, L.; Henning, T.; de Val-Borro, M.; Tinney, C. G.; Wright, D. J.; Durkan, S.; Suc, V.; Noyes, R.; Lázár, J.; Papp, I.; Sári, P.
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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-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-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.
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    PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
    (2015) Smartt, S. J.; Valenti, S.; Fraser, M.; Inserra, C.; Young, D. R.; Sullivan, M.; Bauer, Franz Erik; Clocchiatti, Alejandro; Romero Cañizales, Cristina; Schulze, S.; Pastorello, A.; Benetti, S.; Gal-Yam, A.; Knapic, C.; Molinaro, M.; Smareglia, R.; Smith, K. W.; Taubenberger, S.; Yaron, O.; Anderson, J. P.; Ashall, C.; Balland, C.; Baltay, C.; Barbarino, C.; Baumont, S.; Bersier, D.; Blagorodnova, N.; Bongard, S.; Botticella, M. T.; Bufano, F.; Bulla, M.; Cappellaro, E.; Campbell, H.; Cellier-Holzem, F.; Chen, T. W.; Childress, M. J.; Contreras, C.; Dall’Ora, M.; Danziger, J.; de Jaeger, T.; De Cia, A.; Della Valle, M.; Dennefeld, M.; Elias Rosa, N.; Elman, N.; Feindt, U.; Fleury, M.; Gall, E.; González Gaitan, S.; Galbany, L.; Morales Garoffolo, A.; Greggio, L.; Guillou, L. L.; Hachinger, S.; Hadjiyska, E.; Hage, P. E.; Hillebrandt, W.; Hodgkin, S.; Hsiao, E. Y.; James, P. A.; Jerkstrand, A.; Kangas, T.; Kankare, E.; Kotak, R.; Kromer, M.; Kuncarayakti, H.; Leloudas, G.; Lundqvist, P.; Lyman, J. D.; Hook, I. M.; Maguire, K.; Manulis, I.; Margheim, S. J.; Mattila, S.; Maund, J. R.; Mazzali, P. A.; McCrum, M.; McKinnon, R.; Moreno Raya, M. E.; Nicholl, M.; Nugent, P.; Pain, R.; Pignata, Giuliano; Phillips, M. M.; Polshaw, J.; Pumo, M. L.; Rabinowitz, D.; Reilly, E.; Scalzo, R.; Schmidt, B.; Sim, S.; Sollerman, J.; Taddia, F.; Tartaglia, L.; Terreran, G.; Tomasella, L.; Turatto, M.; Walker, E.; Walton, N. A.; Wyrzykowski, L.; Yuan, F.; Zampieri, L.