Search Results - "MARSH, T. R"

The scatter of the M dwarf mass–radius relationship by Parsons, S G, Gänsicke, B T, Marsh, T R, Ashley, R P, Breedt, E, Burleigh, M R, Copperwheat, C M, Dhillon, V S, Green, M J, Hermes, J J, Irawati, P, Kerry, P, Littlefair, S P, Rebassa-Mansergas, A, Sahman, D I, Schreiber, M R, Zorotovic, M

“…M dwarfs are prime targets in the hunt for habitable worlds around other stars. This is due to their abundance as well as their small radii and low masses and…”
Get full text

A radio-pulsing white dwarf binary star by Marsh, T. R., Gänsicke, B. T., Hümmerich, S., Hambsch, F.-J., Bernhard, K., Lloyd, C., Breedt, E., Stanway, E. R., Steeghs, D. T., Parsons, S. G., Toloza, O., Schreiber, M. R., Jonker, P. G., van Roestel, J., Kupfer, T., Pala, A. F., Dhillon, V. S., Hardy, L. K., Littlefair, S. P., Aungwerojwit, A., Arjyotha, S., Koester, D., Bochinski, J. J., Haswell, C. A., Frank, P., Wheatley, P. J.

“…Observations of a white dwarf/cool star binary that emits from X-ray to radio wavelengths, AR Sco, reveal a close binary with a 3.56-h period, pulsing in…”
Get full text

A search for optical bursts from the repeating fast radio burst FRB 121102 by Hardy, L. K., Dhillon, V. S., Spitler, L. G., Littlefair, S. P., Ashley, R. P., De Cia, A., Green, M. J., Jaroenjittichai, P., Keane, E. F., Kerry, P., Kramer, M., Malesani, D., Marsh, T. R., Parsons, S. G., Possenti, A., Rattanasoon, S., Sahman, D. I.

“…Abstract We present a search for optical bursts from the repeating fast radio burst FRB 121102 using simultaneous observations with the high-speed optical…”
Get full text

Relentless and complex transits from a planetesimal debris disc by Farihi, J, Hermes, J J, Marsh, T R, Mustill, A J, Wyatt, M C, Guidry, J A, Wilson, T G, Redfield, S, Izquierdo, P, Toloza, O, Gänsicke, B T, Aungwerojwit, A, Kaewmanee, C, Dhillon, V S, Swan, A

“…ABSTRACT This article reports quasi-continuous transiting events towards WD 1054–226 at d = 36.2 pc and V = 16.0 mag, based on simultaneous, high-cadence,…”
Get full text

Gaseous Metal Disk Around a White Dwarf by Gänsicke, B.T, Marsh, T.R, Southworth, J, Rebassa-Mansergas, A

“…The destiny of planetary systems through the late evolution of their host stars is very uncertain. We report a metal-rich gas disk around a moderately hot and…”
Get full text

CONSTRAINTS ON THE LIFETIMES OF DISKS RESULTING FROM TIDALLY DESTROYED ROCKY PLANETARY BODIES by GIRVEN, J, BRINKWORTH, C. S, FARIHI, J, GÄNSICKE, B. T, HOARD, D. W, MARSH, T. R, KOESTER, D

“…Spitzer IRAC observations of 15 metal-polluted white dwarfs reveal infrared excesses in the spectral energy distributions of HE 0110-5630, GD 61, and HE…”
Get full text

SDSS unveils a population of intrinsically faint cataclysmic variables at the minimum orbital period by Gänsicke, B. T., Dillon, M., Southworth, J., Thorstensen, J. R., Rodríguez-Gil, P., Aungwerojwit, A., Marsh, T. R., Szkody, P., Barros, S. C. C., Casares, J., De Martino, D., Groot, P. J., Hakala, P., Kolb, U., Littlefair, S. P., Martínez-Pais, I. G., Nelemans, G., Schreiber, M. R.

“…We discuss the properties of 137 cataclysmic variables (CVs) which are included in the Sloan Digital Sky Survey (SDSS) spectroscopic data base, and for which…”
Get full text

Doppler tomography as a tool for detecting exoplanet atmospheres by Watson, C A, de Mooij, E J W, Steeghs, D, Marsh, T R, Brogi, M, Gibson, N P, Matthews, S

“…ABSTRACT High-resolution Doppler spectroscopy is a powerful tool for identifying molecular species in the atmospheres of both transiting and non-transiting…”
Get full text

The evolution of rapid optical/X-ray timing correlations in the initial hard state of MAXI J1820+070 by Paice, J A, Gandhi, P, Shahbaz, T, Veledina, A, Malzac, J, Buckley, D A H, Charles, P A, Rajwade, K, Dhillon, V S, Littlefair, S P, Marsh, T R, Uttley, P, Vincentelli, F M, Misra, R

“…ABSTRACT We report on a multiepoch campaign of rapid optical/X-ray timing observations of the superbright 2018 outburst of MAXI J1820+070, a black hole…”
Get full text

The origin of subdwarf B stars - I. The formation channels by Han, Z., Podsiadlowski, Ph, Maxted, P. F. L., Marsh, T. R.

“…Abstract Subdwarf B (sdB) stars (and related sdO/sdOB stars) are believed to be helium-core-burning objects with very thin hydrogen-rich envelopes. In recent…”
Get full text

ULTRACAM: an ultrafast, triple-beam CCD camera for high-speed astrophysics by Dhillon, V. S., Marsh, T. R., Stevenson, M. J., Atkinson, D. C., Kerry, P., Peacocke, P. T., Vick, A. J. A., Beard, S. M., Ives, D. J., Lunney, D. W., McLay, S. A., Tierney, C. J., Kelly, J., Littlefair, S. P., Nicholson, R., Pashley, R., Harlaftis, E. T., O'Brien, K.

“…ULTRACAM is a portable, high-speed imaging photometer designed to study faint astronomical objects at high temporal resolutions. ULTRACAM employs two dichroic…”
Get full text

Physical properties of IP Pegasi: an eclipsing dwarf nova with an unusually cool white dwarf by Copperwheat, C. M., Marsh, T. R., Dhillon, V. S., Littlefair, S. P., Hickman, R., Gänsicke, B. T., Southworth, J.

“…We present high-speed photometric observations of the eclipsing dwarf nova IP Pegasi (IP Peg) taken with the triple-beam camera ULTRACAM mounted on the William…”
Get full text

Detection and Timing of Gamma-Ray Pulsations from the 707 Hz Pulsar J0952−0607 by Nieder, L., Clark, C. J., Bassa, C. G., Wu, J., Singh, A., Donner, J. Y., Allen, B., Breton, R. P., Dhillon, V. S., Eggenstein, H.-B., Hessels, J. W. T., Kennedy, M. R., Kerr, M., Littlefair, S., Marsh, T. R., Sánchez, D. Mata, Papa, M. A., Ray, P. S., Steltner, B., Verbiest, J. P. W.

“…The Low-Frequency Array radio telescope discovered the 707 Hz binary millisecond pulsar (MSP) J0952−0607 in a targeted radio pulsation search of an…”
Get full text

Radial-velocity measurements of subdwarf B stars by Copperwheat, C. M., Morales-Rueda, L., Marsh, T. R., Maxted, P. F. L., Heber, U.

“…Subdwarf B (sdB) stars are hot, subluminous stars which are thought to be core-helium burning with thin hydrogen envelopes. The mechanism by which these stars…”
Get full text

The Expanding Bipolar Shell of the Helium Nova V445 Puppis by Woudt, P. A, Steeghs, D, Karovska, M, Warner, B, Groot, P. J, Nelemans, G, Roelofs, G. H. A, Marsh, T. R, Nagayama, T, Smits, D. P, O’Brien, T

“…From multi-epoch adaptive optics imaging and integral field unit spectroscopy, we report the discovery of an expanding and narrowly confined bipolar shell…”
Get full text

Precise mass and radius values for the white dwarf and low mass M dwarf in the pre-cataclysmic binary NN Serpentis by Parsons, S. G., Marsh, T. R., Copperwheat, C. M., Dhillon, V. S., Littlefair, S. P., Gänsicke, B. T., Hickman, R.

“…Using the high resolution Ultraviolet and Visual Echelle Spectrograph (UVES) mounted on the Very Large Telescope in combination with photometry from the…”
Get full text

Polarimetric evidence of a white dwarf pulsar in the binary system AR Scorpii by Buckley, D. A. H., Meintjes, P. J., Potter, S. B., Marsh, T. R., Gänsicke, B. T.

“…The variable star AR Scorpii (AR Sco) was recently discovered to pulse in brightness every 1.97 min from ultraviolet wavelengths into the radio regime. The…”
Get full text

On the evolutionary status of short-period cataclysmic variables by Littlefair, S. P., Dhillon, V. S., Marsh, T. R., Gänsicke, B. T., Southworth, John, Baraffe, I., Watson, C. A., Copperwheat, C.

“…We present high-speed, three-colour photometry of seven short-period (P orb≤ 95 min) eclipsing cataclysmic variables (CVs) from the Sloan Digital Sky Survey…”
Get full text

The substellar companion in the eclipsing white dwarf binary SDSS J141126.20+200911.1 by Littlefair, S P, Casewell, S L, Parsons, S G, Dhillon, V S, Marsh, T R, Gaensicke, B T, Bloemen, S, Catalan, S, Irawati, P, Hardy, L K, Mcallister, M, Bours, M CP, Richichi, Andrea, Burleigh, M R, Burningham, B, Breedt, E, Kerry, P

“…We present high time resolution SDSS-g' and SDSS-z' light curves of the primary eclipse in SDSS J141126.20+200911.1, together with time-resolved X-Shooter…”
Get full text

Hunting for eclipses: high-speed observations of cataclysmic variables by Hardy, L K, McAllister, M J, Dhillon, V S, Littlefair, S P, Bours, M C P, Breedt, E, Butterley, T, Chakpor, A, Irawati, P, Kerry, P, Marsh, T R, Parsons, S G, Savoury, C D J, Wilson, R W, Woudt, P A

“…We present new time-resolved photometry of 74 cataclysmic variables (CVs), 47 of which are eclipsing. Thirteen of these eclipsing systems are newly discovered…”
Get full text