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Related papers: Data calibration for the MASCARA and bRing instrum…

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The characterization of exoplanet atmospheres has proven to be successful using high-resolution spectroscopy. Phase curve observations of hot/ultra-hot Jupiters can reveal their compositions and thermal structures, thereby allowing the…

Earth and Planetary Astrophysics · Physics 2023-09-01 Swaetha Ramkumar , Neale P. Gibson , Stevanus K. Nugroho , Cathal Maguire , Mark Fortune

The Mars Global Surveyor (MGS), Mars Express (MEX), and Venus Express (VEX) experienced several superior solar conjunctions. These conjunctions cause severe degradations of radio signals when the line of sight between the Earth and the…

Space Physics · Physics 2013-01-08 A. K. Verma , A. Fienga , J. Laskar , K. Issautier , H. Manche , M. Gastineau

One source of error in high-precision radial velocity measurements of exoplanet host stars is chromatic change in Earth's atmospheric transmission during observations. Mitigation of this error requires that the photon-weighted barycentric…

Earth and Planetary Astrophysics · Physics 2019-07-10 Ryan Blackman , Joel Ong , Debra Fischer

In this work, we perform the re-calibration of PS1 photometry by correcting for position-dependent systematic errors using the spectroscopy-based Stellar Color Regression method (SCR), the photometry-based SCR method (SCR$'$), and the Gaia…

Instrumentation and Methods for Astrophysics · Physics 2023-08-14 Kai Xiao , Haibo Yuan , Bowen Huang , Ruoyi Zhang , Lin Yang , Shuai Xu

[ABRIDGED] In this study, we set out to a) demonstrate the sensitivity to <4 R_E transiting planets with periods of a few days around our program stars, and b) improve our knowledge of some astrophysical properties(e.g., activity, rotation)…

Earth and Planetary Astrophysics · Physics 2015-06-05 P. Giacobbe , M. Damasso , A. Sozzetti , G. Toso , M. Perdoncin , P. Calcidese , A. Bernagozzi , E. Bertolini , M. G. Lattanzi , R. L. Smart

Atmospheric studies at high spectral resolution have shown the presence of molecules, neutral and ionised metals, and hydrogen in the transmission spectrum of ultra-hot Jupiters, and have started to probe the dynamics of their atmospheres.…

Observations of exoplanet transits by small satellites have gained increasing attention for reducing detection biases. However, no unambiguous detection of an exoplanet has yet been demonstrated using optics with apertures smaller than 60…

Direct detection of thermal emission from nearby hot Jupiters has greatly advanced our knowledge of extrasolar planets in recent years. Since hot Jupiter systems can be regarded as analogs of high contrast binaries, ground-based infrared…

We quantitatively assess, by means of comprehensive numerical simulations, the ability of broad-band photometric surveys to recover the broad emission line region (BLR) size in quasars under various observing conditions and for a wide range…

Cosmology and Nongalactic Astrophysics · Physics 2014-04-25 Doron Chelouche , Ohad Shemmer , Gabriel I. Cotlier , Aaron J. Barth , Stephen E. Rafter

We propose bigradient phase referencing (BPR), a new radio-observation technique, and report its performance using the Japanese very-long-baseline-interferometry network (JVN). In this method, a weak source is detected by phase-referencing…

Extracting polarimetric information from very long baseline interferometry (VLBI) data is demanding but vital for understanding the synchrotron radiation process and the magnetic fields of celestial objects, such as active galactic nuclei…

Instrumentation and Methods for Astrophysics · Physics 2025-11-21 Jong-Seo Kim , Jakob Roth , Jongho Park , Jack D. Livingston , Philipp Arras , Torsten A. Enßlin , Michael Janssen , J. Anton Zensus , Andrei P. Lobanov

In a companion paper, we presented BayesCal, a mathematical formalism for mitigating sky-model incompleteness in interferometric calibration. In this paper, we demonstrate the use of BayesCal to calibrate the degenerate gain parameters of…

Instrumentation and Methods for Astrophysics · Physics 2022-07-20 Peter H. Sims , Jonathan C. Pober , Jonathan L. Sievers

Aims: Even the most-precise radial-velocity instruments gather high-resolution spectra that present systematic errors that a data reduction pipeline cannot identify and correct for efficiently. In this paper, we aim at improving the…

Earth and Planetary Astrophysics · Physics 2022-02-15 M. Cretignier , X. Dumusque , N. C. Hara , F. Pepe

Calibration data are often obtained by observing several well-understood objects simultaneously with multiple instruments, such as satellites for measuring astronomical sources. Analyzing such data and obtaining proper concordance among the…

Applications · Statistics 2018-09-28 Yang Chen , Xiao-Li Meng , Xufei Wang , David A. van Dyk , Herman L. Marshall , Vinay L. Kashyap

Aims. We present further development of the rolling root mean square (rRMS) algorithm. These improvements consist of an increase in computational speed and an estimation of the uncertainty on the recovered diagnostics. This improvement is…

Solar and Stellar Astrophysics · Physics 2024-05-13 Aaron W. Peat , Nicolas Labrosse , Krzysztof Barczynski , Brigitte Schmieder

Context. Several exoplanet direct imaging instruments will soon be in operation. They use an extreme adaptive optics (XAO) system to correct the atmospheric turbulence and provide a highly-corrected beam to a near-infrared (NIR) coronagraph…

Instrumentation and Methods for Astrophysics · Physics 2015-06-16 M. N'Diaye , K. Dohlen , T. Fusco , B. Paul

The 2MASS photometric calibration observations cover ~6 square degrees on the sky in 35 "calibration fields" each sampled in nominal photometric conditions between 562 and 3692 times during the four years of the 2MASS mission. We compile a…

Astrophysics · Physics 2009-11-13 Peter Plavchan , M. Jura , J. Davy Kirkpatrick , Roc M. Cutri , S. C. Gallagher

The JWST has been collecting scientific data for over two years now. Scientists are now looking deeper into the data, which introduces the need to correct known systematic effects. Important limiting factors for the MIRI/MRS are the…

Instrumentation and Methods for Astrophysics · Physics 2024-06-18 Danny Gasman , Ioannis Argyriou , Jane E. Morrison , David R. Law , Alistair Glasse , Karl D. Gordon , Patrick J. Kavanagh , Craig Lage , Polychronis Patapis , G. C. Sloan

Calibration is a key step in the signal processing pipeline of any radio astronomical instrument. The required sky, ionospheric and instrumental models for this step can suffer from various kinds of incompleteness. In this paper we analyze…

Instrumentation and Methods for Astrophysics · Physics 2019-02-08 A. Mouri Sardarabadi , L. V. E. Koopmans

We present a method for calibrating images acquired by the Dawn Framing Camera (FC) that is based on the results of an in-flight calibration campaign performed during the cruise from Earth to Vesta. We describe this campaign and the data…

Instrumentation and Methods for Astrophysics · Physics 2017-02-01 S. E. Schröder , T. Maue , P. Gutiérrez Marqués , S. Mottola , K. M. Aye , H. Sierks , H. U. Keller , A. Nathues