Search Results - "VASISHT, G"
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Searching for exoplanets using a microresonator astrocomb
Published in Nature photonics (01-01-2019)“…Orbiting planets induce a weak radial velocity (RV) shift in the host star that provides a powerful method of planet detection. Importantly, the RV technique…”
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Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager
Published in Science (American Association for the Advancement of Science) (02-10-2015)“…Directly detecting thermal emission from young extrasolar planets allows measurement of their atmospheric compositions and luminosities, which are influenced…”
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Observing Exoplanets with High-dispersion Coronagraphy. II. Demonstration of an Active Single-mode Fiber Injection Unit
Published in The Astrophysical journal (01-04-2017)“…High-dispersion coronagraphy (HDC) optimally combines high-contrast imaging techniques such as adaptive optics/wavefront control plus coronagraphy to high…”
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Demonstration of a near-IR line-referenced electro-optical laser frequency comb for precision radial velocity measurements in astronomy
Published in Nature communications (27-01-2016)“…An important technique for discovering and characterizing planets beyond our solar system relies upon measurement of weak Doppler shifts in the spectra of host…”
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Molecular Signatures in the Near-Infrared Dayside Spectrum of HD 189733b
Published in The Astrophysical journal (10-01-2009)“…We have measured the dayside spectrum of HD 189733b between 1.5 and 2.5 is a subset of m using the NICMOS instrument on the Hubble Space Telescope. The…”
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Water, Methane, and Carbon Dioxide Present in the Dayside Spectrum of the Exoplanet HD 209458b
Published in The Astrophysical journal (20-10-2009)“…Using the NICMOS instrument on the Hubble Space Telescope, we have measured the dayside spectrum of HD 209458b between 1.5 and 2.5 Delta *mm. The emergent…”
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RECONNAISSANCE OF THE HR 8799 EXOSOLAR SYSTEM. II. ASTROMETRY AND ORBITAL MOTION
Published in The Astrophysical journal (10-04-2015)“…We present an analysis of the orbital motion of the four substellar objects orbiting HR 8799. Our study relies on the published astrometric history of this…”
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RECONNAISSANCE OF THE HR 8799 EXOSOLAR SYSTEM. I. NEAR-INFRARED SPECTROSCOPY
Published in The Astrophysical journal (01-05-2013)“…We obtained spectra in the wavelength range [lambda] = 995-1769 nm of all four known planets orbiting the star HR 8799. Using the suite of instrumentation…”
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Project 1640 Observations of Brown Dwarf GJ 758 B: Near-infrared Spectrum and Atmospheric Modeling
Published in The Astrophysical journal (20-03-2017)“…The nearby Sun-like star GJ 758 hosts a cold substellar companion, GJ 758 B, at a projected separation of 30 au, previously detected in high-contrast…”
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Precision Near-Infrared Photometry for Exoplanet Transit Observations. I. Ensemble Spot Photometry for an All-Sky Survey
Published in Publications of the Astronomical Society of the Pacific (01-07-2012)“…ABSTRACT Near-IR observations are important for the detection and characterization of exoplanets using the transit technique, either in surveys of large…”
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Retrieval of Precise Radial Velocities from Near-infrared High-resolution Spectra of Low-mass Stars
Published in Publications of the Astronomical Society of the Pacific (01-10-2016)“…Given that low-mass stars have intrinsically low luminosities at optical wavelengths and a propensity for stellar activity, it is advantageous for radial…”
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Anomalous X-Ray Pulsars and Soft Gamma-Ray Repeaters in Supernova Remnants
Published in The Astrophysical journal (01-10-2001)Get full text
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The Discovery of an Anomalous X-Ray Pulsar in the Supernova Remnant Kes 73
Published in The Astrophysical journal (10-09-1997)Get full text
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14
The Near-Infrared Size-Luminosity Relations for Herbig Ae/Be Disks
Published in The Astrophysical journal (10-05-2005)“…We report the results of a sensitive K-band survey of Herbig Ae/Be disk sizes using the 85 m baseline Keck Interferometer. Targets were chosen to span the…”
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CHARACTERIZING THE ATMOSPHERES OF TRANSITING PLANETS WITH A DEDICATED SPACE TELESCOPE
Published in The Astrophysical journal (10-02-2012)“…Exoplanetary science is one of the fastest evolving fields of today's astronomical research, continuously yielding unexpected and surprising results…”
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Interferometer Observations of Subparsec-Scale Infrared Emission in the Nucleus of NGC 4151
Published in The Astrophysical journal (20-10-2003)Get full text
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Keck Interferometer Nuller Data Reduction and On-Sky Performance
Published in Publications of the Astronomical Society of the Pacific (01-10-2009)“…We describe the Keck Interferometer nuller theory of operation, data reduction, and on-sky performance, particularly as it applies to the nuller exozodiacal…”
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Fringe Measurement and Control for the Keck Interferometer
Published in Publications of the Astronomical Society of the Pacific (01-07-2010)“…The paper describes the measurement and control algorithms of the near-infrared fringe trackers of the Keck Interferometer (KI). The fringe trackers provide…”
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A 700 Year-old Pulsar in the Supernova Remnant Kesteven 75
Published in The Astrophysical journal (10-10-2000)Get full text
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First L-Band Interferometric Observations of a Young Stellar Object: Probing the Circumstellar Environment of MWC 419
Published in The Astrophysical journal (20-09-2009)“…We present spatially resolved K- and L-band spectra (at spectral resolution R = 230 and R = 60, respectively) of MWC 419, a Herbig Ae/Be star. The data were…”
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