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Related papers: A search for Planet 9 in the IRAS data

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We present preliminary results of a radial-velocity search for companions to a volume limited sample of M dwarfs. Typical accuracy range between 10m/s for the brighter stars and 70m/s at our limiting magnitude. We complement the radial…

Astrophysics · Physics 2007-05-23 X. Delfosse , T. Forveille , J. -L. Beuzit , S. Udry , M. Mayor , C. Perrier

We present a search for galaxies at 7.6<z<9.8 using the latest HST WFC3 near-infrared data, based on the Lyman-break technique. We search for galaxies which have large (Y-J) colours (the "Y-drops") on account of the Lyman-alpha forest…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Silvio Lorenzoni , Andrew Bunker , Stephen Wilkins , Elizabeth Stanway , Matt Jarvis , Joseph Caruana

We have used the InfraRed Array Camera (IRAC) onboard the Spitzer Space telescope to search for low mass companions of the nearby debris disk star epsilon Eridani. The star was observed in two epochs 39 days apart, with different focal…

Astrophysics · Physics 2011-02-11 M. Marengo , S. T. Megeath , G. G. Fazio , K. R. Stapelfeldt , M. W. Werner , D. E. Backman

The 64-m Parkes telescope, equipped with the 21-cm multibeam receiver, has completed a sensitive survey (typically 6 mJy per beam rms) for HI galaxies in the Zone of Avoidance accessible to the telescope, 196 < l < 52 deg, and |b| < 5 deg.…

Astrophysics · Physics 2007-05-23 Patricia A. Henning , Renee C. Kraan-Korteweg , Lister Staveley-Smith

Young nearby stars are good candidates in the search for planets with both radial velocity (RV) and direct imaging techniques. This, in turn, allows for the computation of the giant planet occurrence rates at all separations. The RV search…

We report the detection of a planetary system around BD-08:2823, that includes at least one Uranus-mass planet and one Saturn-mass planet. This discovery serendipitously originates from a search for planetary transits in the Hipparcos…

CONTEXT. It is theoretically possible for rings to have formed around extrasolar planets in a similar way to that in which they formed around the giant planets in our solar system. However, no such rings have been detected to date. AIMS: We…

Earth and Planetary Astrophysics · Physics 2017-12-27 B. Akinsanmi , M. Oshagh , N. C. Santos , S. C. C. Barros

Context. Low mass stars are currently the best targets for searches for rocky planets in the habitable zone of their host star. Over the last 13 years, precise radial velocities measured with the HARPS spectrograph have identified over a…

Earth and Planetary Astrophysics · Physics 2017-06-23 N. Astudillo-Defru , T. Forveille , X. Bonfils , D. Ségransan , F. Bouchy , X. Delfosse , C. Lovis , M. Mayor , F. Murgas , F. Pepe , N. C. Santos , S. Udry , A. Wunsche

Measuring stellar motions at the Milky Way's Galactic center (GC) provides unique insight into the dynamical processes within galactic nuclei. We present proper motion measurements for 23 SiO-maser emitting stars within 45'' of SgrA*,…

We report on the discovery of a planetary companion candidate with a minimum mass Msini = 4.6 M_J orbiting the K2 III giant star HD 175370 (KIC 007940959). This star was a target in our program to search for planets around a sample of 95…

The direct imaging of extrasolar giant planets demands the highest possible contrasts (dH ~10 magnitudes) at the smallest angular separations (~0.1'') from the star. We present an adaptive optics observing method, called star-hopping,…

Earth and Planetary Astrophysics · Physics 2021-04-07 Z. Wahhaj , J. Milli , C. Romero , L. Cieza , A. Zurlo , A. Vigan , E. Peña , G. Valdes , F. Cantalloube , J. Girard , B. Pantoja

We use Gaia DR2 to hunt for runaway stars from the Orion Nebula Cluster (ONC). We search a region extending 45{\deg} around the ONC and out to 1 kpc to find sources that overlapped in angular position with the cluster in the last ~10 Myr.…

Astrophysics of Galaxies · Physics 2020-09-02 Juan P. Farias , Jonathan C. Tan , Laurent Eyer

A point source observed 8 AU in projection from beta Pictoris in L' (3.8 micron) imaging in 2003 has been recently presented as a planet candidate. Here we show the results of L'-band adaptive optics imaging obtained at Keck Observatory in…

Earth and Planetary Astrophysics · Physics 2015-05-14 Michael P. Fitzgerald , Paul Kalas , James R. Graham

Planet Nine is a hypothetical planet located well beyond Pluto that has been proposed in an attempt to explain the observed clustering in physical space of the perihelia of six extreme trans-Neptunian objects or ETNOs. The predicted…

Earth and Planetary Astrophysics · Physics 2016-04-19 C. de la Fuente Marcos , R. de la Fuente Marcos

We present the first results of the Astrometric Reconnaissance of Exoplanetary Systems (ARES) project, aimed at validating and characterizing candidate exoplanets around the nearest systems using multi-epoch Hubble Space Telescope (HST)…

Earth and Planetary Astrophysics · Physics 2025-12-10 M. Libralato , L. Bedin , A. Burgasser

Abbreviated. By selecting stars with similar ages and masses, the Young Suns Exoplanet Survey (YSES) aims to detect and characterize planetary-mass companions to solar-type host stars in the Scorpius-Centaurus association. Our survey is…

We report the detections of low-mass companions to five M and L dwarfs within 10 pc of the Sun using the Hubble Space Telescope (HST) Near-Infrared Camera and Multi-Object Spectrometer (NICMOS). Follow-up observations using the HST Advanced…

The Space Interferometry Mission (SIM) will make precise astrometric measurements that can be used to detect planets around nearby stars. We have simulated SIM observations and estimated the ability of SIM to detect planets with given…

Astrophysics · Physics 2009-11-07 Eric B. Ford , Scott Tremaine

We present a SCUBA submillimetre (450 & 850 micron) survey of the environment of 105 IRAS point sources, selected from the Wood & Churchwell (1989a) and Kurtz, Churchwell & Wood (1994) radio ultracompact (UC) HII region surveys. We detected…

Astrophysics · Physics 2009-11-11 M. A. Thompson , J. Hatchell , A. J. Walsh , G. H. Macdonald , T. J. Millar