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We determine and tabulate A(lambda)/A(K), the wavelength dependence of interstellar extinction, in the Galactic plane for 1.25um<lambda<8.0um along two lines of sight: l~42 and l~284. The first is a relatively quiescent and unremarkable…

With the observations of an unprecedented number of oscillating subgiant stars expected from NASA's TESS mission, the asteroseismic characterization of subgiant stars will be a vital task for stellar population studies and for testing our…

Solar and Stellar Astrophysics · Physics 2020-10-02 Marc Hon , Earl P. Bellinger , Saskia Hekker , Dennis Stello , James S. Kuszlewicz

Gaia Data Release 1 allows to recalibrate standard candles such as the Red Clump stars. To use those, they first need to be accurately characterised. In particular, colours are needed to derive the interstellar extinction. As no filter is…

Solar and Stellar Astrophysics · Physics 2018-01-31 L. Ruiz-Dern , C. Babusiaux , F. Arenou , C. Turon , R. Lallement

Extinction in galaxies affects their observed properties. In scenarios describing the distribution of dust and stars in individual disk galaxies, the amplitude of the extinction can be modulated by the inclination of the galaxies. In this…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Ching-Wa Yip , Alex Szalay , Rosemary Wyse , Laszlo Dobos , Tamas Budavari , Istvan Csabai

Kepler Mission results are rapidly contributing to fundamentally new discoveries in both the exoplanet and asteroseismology fields. The data returned from Kepler are unique in terms of the number of stars observed, precision of photometry…

(Abbreviated) Kepler planet candidates require both spectroscopic and imaging follow-up observations to rule out false positives and detect blended stars. [...] In this paper, we examine a sample of 11 Kepler host stars with companions…

Interstellar dust is a major foreground contaminant for many observations and a key component in the chemistry of the interstellar medium, yet its properties remain highly uncertain. Using low-resolution spectra, we accurately measure the…

Astrophysics of Galaxies · Physics 2024-07-23 Xiangyu Zhang , Gregory Green

We present a proof of concept for a new algorithm which can be used to detect exoplanets in high contrast images. The algorithm properly combines mutliple observations acquired during different nights, taking into account the orbital motion…

Instrumentation and Methods for Astrophysics · Physics 2018-08-01 M. Nowak , H. Le Coroller , L. Arnold , K. Dohlen , D. Estevez , T. Fusco , J. -F. Sauvage , A. Vigan

The extragalactic applications of NIR surveys are summarized with a focus on the ability to map the interstellar extinction of our Galaxy. Very preliminary extraction of galaxies on a set of 180 consecutive images is presented, and the…

Astrophysics · Physics 2016-11-03 G. A. Mamon , V. Banchet , M. Tricottet , D. Katz

A composite dust grain model which simultaneously explains the observed interstellar extinction, polarization, IR emission and the abundance constraints, is required. We present a composite grain model, which is made up of a host silicate…

Solar and Stellar Astrophysics · Physics 2013-10-02 Nisha Katyal , Ranjan Gupta , D. B. Vaidya

One bottleneck for the exploitation of data from the $Kepler$ mission for stellar astrophysics and exoplanet research has been the lack of precise radii and evolutionary states for most of the observed stars. We report revised radii of…

Earth and Planetary Astrophysics · Physics 2018-10-24 Travis A. Berger , Daniel Huber , Eric Gaidos , Jennifer L. van Saders

(Abridged) We present the first APOKASC catalog of spectroscopic and asteroseismic data for 415 dwarfs and subgiants. Asteroseismic data have been obtained by Kepler in short cadence. The spectroscopic parameters are based on spectra taken…

Combining the precise parallaxes and optical photometry delivered by Gaia's second data release (Gaia DR2) with the photometric catalogues of PanSTARRS-1, 2MASS, and AllWISE, we derive Bayesian stellar parameters, distances, and extinctions…

KIC 10661783 is an eclipsing binary that shows Delta Sct-like oscillations. More than 60 pulsation frequencies have been detected in its light curve as observed by the Kepler satellite. We want to determine the fundamental stellar and…

Solar and Stellar Astrophysics · Physics 2013-08-20 H. Lehmann , J. Southworth , A. Tkachenko , K. Pavlovski

KIC 5359678 is a 6.231-d period F-type eclipsing binary system whose component stars both show starspot activity. It was observed by the Kepler satellite in long cadence for the full four-year duration of the mission. Wang et al (2021)…

Solar and Stellar Astrophysics · Physics 2022-05-19 John Southworth

Ueta & Otsuka (2021) proposed a method, named as the "Proper Plasma Analysis Practice", to analyze spectroscopic data of ionized nebulae. The method is based on a coherent and simultaneous determination of the reddening correction and…

We describe the dynamical, photometric, and spectroscopic data available for stars targeted by Spitzer and Herschel to search for cold circumstellar dust emission from debris disks, a collection that we name the Cold Debris Disk Surveys…

Solar and Stellar Astrophysics · Physics 2026-03-13 Scott J. Kenyon , Benjamin C. Bromley , Joan R. Najita

We present our catalog of U, B, V, and I stellar photometry of the central 64 sq. deg. area of the Large Magellanic Cloud. Internal and external astrometric and photometric tests using existing optical photometry (U, B, and V from Massey's…

Astrophysics · Physics 2009-11-10 Dennis Zaritsky , Jason Harris , Ian B. Thompson , Eva K. Grebel

It has been demonstrated that the time variability of a star's brightness at different frequencies can be used to infer its surface gravity, radius, mass, and age. With large samples of light curves now available from Kepler and K2, and…

Solar and Stellar Astrophysics · Physics 2018-10-17 Melissa K. Ness , Victor Silva Aguirre , Mikkel N. Lund , Matteo Cantiello , Daniel Foreman-Mackey , David W. Hogg , Ruth Angus
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