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Perspectives for observing hot massive stars with XMM-Newton in the years 2017-2027
Rauw, G.
XMM-Newton has deeply changed our picture of X-ray emission of hot massive stars. High-resolution X-ray spectroscopy, as well as monitoring of these objects, has helped us to gain a deeper insight into the physics of single massive stars with or without magnetic fields, as well as of massive binary systems, where the stellar winds of both stars in…
Modelling the 3 Micron Region in Akari IRC Spectra
Onaka, Takashi; Usui, Fumihiko; Hammonds, Mark +1 more
An Extension of a Reliable Wavelength Coverage of the Akari NG GRISM Mode
Nakagawa, Takao; Baba, Shunsuke; Isobe, Naoki +4 more
Standard and Truncated Luminosity Functions for Stars in the Gaia Era
Zaninetti, Lorenzo
The luminosity function (LF) for stars is here fitted by a Schechter function and by a Gamma probability density function. The dependence of the number of stars on the distance, both in the low and high luminosity regions, requires the inclusion of a lower and upper boundary in the Schechter and Gamma LFs. Three astrophysical applications for star…
Planck 2015 results. XIII. Cosmological parameters
Kneissl, R.; Miville-Deschênes, M. -A.; Boulanger, F. +259 more
This paper presents cosmological results based on full-mission Planck observations of temperature and polarization anisotropies of the cosmic microwave background (CMB) radiation. Our results are in very good agreement with the 2013 analysis of the Planck nominal-mission temperature data, but with increased precision. The temperature and polarizat…
The Gaia mission
Prusti, T.; Mazeh, T.; Zucker, S. +623 more
Gaia is a cornerstone mission in the science programme of the EuropeanSpace Agency (ESA). The spacecraft construction was approved in 2006, following a study in which the original interferometric concept was changed to a direct-imaging approach. Both the spacecraft and the payload were built by European industry. The involvement of the scientific …
Planck 2015 results. XX. Constraints on inflation
Kneissl, R.; Kim, J.; Miville-Deschênes, M. -A. +244 more
We present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey, which includes more than twice the integration time of the nominal survey used for the 2013 release papers. The Planck full mission temperature data …
Mesa Isochrones and Stellar Tracks (MIST). I. Solar-scaled Models
Choi, Jieun; Conroy, Charlie; Dotter, Aaron +3 more
This is the first of a series of papers presenting the Modules for Experiments in Stellar Astrophysics (MESA) Isochrones and Stellar Tracks (MIST) project, a new comprehensive set of stellar evolutionary tracks and isochrones computed using MESA, a state-of-the-art open-source 1D stellar evolution package. In this work, we present models with sola…
A 2.4% Determination of the Local Value of the Hubble Constant
Casertano, Stefano; Filippenko, Alexei V.; Foley, Ryan J. +12 more
We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) to reduce the uncertainty in the local value of the Hubble constant from 3.3% to 2.4%. The bulk of this improvement comes from new near-infrared (NIR) observations of Cepheid variables in 11 host galaxies of recent type Ia supernovae (SNe Ia), more than doubling the sample o…
Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
Prusti, T.; Mazeh, T.; Zucker, S. +589 more
Context. At about 1000 days after the launch of Gaia we present the first Gaia data release, Gaia DR1, consisting of astrometry and photometry for over 1 billion sources brighter than magnitude 20.7.
Aims: A summary of Gaia DR1 is presented along with illustrations of the scientific quality of the data, followed by a discussion of the limitat…