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...
Currie, Thayne, Lada, Charles J., Plavchan, Peter, Robitaille, Thomas P., Irwin, Jonathan, Kenyon, Scott J.
Expanding upon the Infrared Array Camera (IRAC) survey from Dahm & Hillenbrand, we describe Spitzer IRAC and Multiband Imaging Photometer for Spitzer observations of the populous, 5 Myr old open...
Currie, Thayne, Lada, Charles J., Plavchan, Peter, Robitaille, Thomas, Irwin, Jonathan, Kenyon, Scott J.
(Abridged) We describe Spitzer IRAC and MIPS observations of the populous, 5 Myr-old open cluster NGC 2362. Early/intermediate-type confirmed/candidate cluster members either have photospheric mid-IR...
The rotational evolution of low-mass stars (2009)
Irwin, Jonathan, Bouvier, Jerome
We summarise recent progress in the understanding of the rotational evolution of low-mass stars (here defined as solar mass down to the hydrogen burning limit) both in terms of observations and...
Currie, Thayne, Evans, Nancy Remage, Spitzbart, Brad, Irwin, Jonathan, Wolk, Scott J., Hernandez, Jesus, ...
We describe Chandra/ACIS-I observations of the massive ~ 13--14 Myr-old cluster, h Persei, part of the famous Double Cluster (h and chi Persei) in Perseus. Combining the list of Chandra-detected...
The Monitor project: Rotation periods of low-mass stars in M50 (2008)
Irwin, Jonathan, Aigrain, Suzanne, Bouvier, Jerome, Hebb, Leslie, Hodgkin, Simon, Irwin, Mike, ...
We report on the results of a time-series photometric survey of M50 (NGC 2323), a ~130 Myr open cluster, carried out using the CTIO 4m Blanco telescope and Mosaic-II detector as part of the Monitor...
The MEarth project: searching for transiting habitable super-Earths around nearby M-dwarfs (2008)
Irwin, Jonathan, Charbonneau, David, Nutzman, Philip, Falco, Emilio
Due to their small radii, M-dwarfs are very promising targets to search for transiting super-Earths, with a planet of 2 Earth radii orbiting an M5 dwarf in the habitable zone giving rise to a 0.5%...
The Monitor project: the search for transits in the open cluster NGC 2362 (2008)
Miller, Adam A., Irwin, Jonathan, Aigrain, Suzanne, Hodgkin, Simon, Hebb, Leslie
We present the results of a systematic search for transiting planets in a ~5 Myr open cluster, NGC 2362. We observed ~1200 candidate cluster members, of which ~475 are believed to be genuine cluster...
Parameters and Predictions for the Long-Period Transiting Planet HD 17156b (2008)
Irwin, Jonathan, Charbonneau, David, Nutzman, Philip, Welsh, William F., Rajan, Abhijith, Hidas, Marton, ...
We report high-cadence time-series photometry of the recently-discovered transiting exoplanet system HD 17156, spanning the time of transit on UT 2007 October 1, from three separate observatories. We...
Irwin, Jonathan, Hodgkin, Simon, Aigrain, Suzanne, Bouvier, Jerome, Hebb, Leslie, Irwin, Mike, ...
We report on the results of a time-series photometric survey of NGC 2362, carried out using the CTIO 4m Blanco telescope and Mosaic-II detector as part of the Monitor project. Rotation periods were...
The Monitor project: tracking the evolution of low mass and pre-main sequence stars (2007)
Aigrain, Suzanne, Irwin, Jonathan, Hebb, Leslie, Hodgkin, Simon, Miller, Adam, Moraux, Estelle, ...
The Monitor project is a large-scale program of photometric and spectroscopic monitoring of young open clusters using telescopes at ESO and other observatories. Its primary goal is to detect and...
The Monitor project: Rotation of low-mass stars in the open cluster NGC 2547 (2007)
Irwin, Jonathan, Hodgkin, Simon, Aigrain, Suzanne, Bouvier, Jerome, Hebb, Leslie, Moraux, Estelle
We report on the results of an I-band time-series photometric survey of NGC 2547 using the MPG/ESO 2.2m telescope with WFI, achieving better than 1% photometric precision per data point over 14
Irwin, Jonathan, Aigrain, Suzanne, Hodgkin, Simon, Stassun, Keivan G., Hebb, Leslie, Irwin, Mike, ...
We report the discovery of a low-mass (0.26 +/- 0.02, 0.15 +/- 0.01 Msol) pre-main-sequence eclipsing binary with a 5.3 day orbital period. JW 380 was detected as part of a high-cadence time-resolved...
The Monitor project: Rotation of low-mass stars in the open cluster NGC 2516 (2007)
Irwin, Jonathan, Hodgkin, Simon, Aigrain, Suzanne, Hebb, Leslie, Bouvier, Jerome, Clarke, Cathie, ...
We report on the results of an i-band time-series photometric survey of NGC 2516 using the CTIO 4m Blanco telescope and 8k Mosaic-II detector, achieving better than 1% photometric precision per data...
Direct Detection of the Asteroidal YORP Effect (2007)
Lowry, Stephen C., Fitzsimmons, Alan, Pravec, Petr, Vokrouhlický, David, Boehnhardt, Hermann, Taylor, Patrick A., ...
The Monitor project: Data processing and lightcurve production (2006)
Irwin, Jonathan, Irwin, Mike, Aigrain, Suzanne, Hodgkin, Simon, Hebb, Leslie, Moraux, Estelle
We have begun a large-scale photometric survey of nearby open clusters and star-forming regions, the Monitor project, aiming to measure time-series photometry for >10,000 cluster members over >10...
The Monitor project: Searching for occultations in young open clusters (2006)
Aigrain, Suzanne, Hodgkin, Simon, Irwin, Jonathan, Hebb, Leslie, Irwin, Mike, Favata, Fabio, ...
The Monitor project is a photometric monitoring survey of nine young (1-200Myr) clusters in the solar neighbourhood to search for eclipses by very low mass stars and brown dwarfs and for planetary...
The Monitor project: Rotation of low-mass stars in the open cluster M34 (2006)
Irwin, Jonathan, Aigrain, Suzanne, Hodgkin, Simon, Irwin, Mike, Bouvier, Jerome, Clarke, Cathie, ...
We report on the results of a V and i-band time-series photometric survey of M34 (NGC 1039) using the Wide Field Camera (WFC) on the Isaac Newton Telescope (INT), achieving better than 1% precision...