Results 11 to 20 of about 74,495 (201)
The Astronomical Journal, 2023 High-precision stellar masses and radii measured directly from binaries can effectively calibrate stellar models. However, such a database containing full spectral types and a large range of metallicity is still not fully established. A continuous effort
Jianping Xiong +8 more
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A collection of model stellar spectra for spectral types B to early-M [PDF]
Astronomy & Astrophysics, 2018 Context. Models of stellar spectra are necessary for interpreting light from individual stars, planets, integrated stellar populations, nebulae, and the interstellar medium.Aims. We provide a comprehensive and homogeneous collection of synthetic spectra for a wide range of atmospheric parameters and chemical compositions.Methods.
Prieto, Carlos Allende +5 more
openaire +2 more sources
Spectral Classification of Galaxies Along the Hubble Sequence [PDF]
, 1995 We develop a straightforward and quantitative two-step method for spectroscopically classifying galaxies from the low signal-to-noise (S/N) optical spectra typical of galaxy redshift surveys. First, using \chi^2-fitting of characteristic templates to the
Willick, Jeffrey A. +2 more
core +2 more sources
The Spitzer Atlas of Stellar Spectra [PDF]
, 2010 We present the Spitzer Atlas of Stellar Spectra (SASS), which includes 159 stellar spectra (5 to 32 mic; R~100) taken with the Infrared Spectrograph on the Spitzer Space Telescope.
D. W. Hoard +9 more
core +2 more sources
SPECTRAL TYPING OF LATE-TYPE STELLAR COMPANIONS TO YOUNG STARS FROM LOW-DISPERSION NEAR-INFRARED INTEGRAL FIELD UNIT DATA [PDF]
The Astronomical Journal, 2012 We used the Project 1640 near-infrared coronagraph and integral field spectrograph to observe 19 young solar type stars. Five of these stars are known binary stars and we detected the late-type secondaries and were able to measure their JH spectra with a resolution of R\sim30.
Roberts, Lewis C., Jr. +24 more
openaire +3 more sources
The Astrophysical Journal, 2023 We identify 71 distant stars in James Webb Space Telescope/NIRCam early release observations (ERO) images of the field of galaxy cluster SMACS J0723.3-7327 (SMACS 0723).
Jake Summers +25 more
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Stellar Chromospheric Variability
Universe, 2021 Cool stars with convective envelopes of spectral types F and later tend to exhibit magnetic activity throughout their atmospheres. The presence of strong and variable magnetic fields is evidenced by photospheric starspots, chromospheric plages and ...
Richard de Grijs, Devika Kamath
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Evaluating GAIA performances on eclipsing binaries. I. Orbits and stellar parameters for V505 Per, V570 Per and OO Peg [PDF]
, 2001 The orbits and physical parameters of three detached, double-lined A-F eclipsing binaries have been derived combining H_P, V_T, B_T photometry from the Hipparcos/Tycho mission with 8500-8750 Ang ground-based spectroscopy, mimicking the photometric ...
A. Prša +26 more
core +4 more sources
New X-ray Selected Pre-Main Sequence Members of the Serpens Molecular Cloud [PDF]
, 2013 The study of young stars no longer surrounded by disks can greatly add to our understanding of how protoplanetary disks evolve and planets form. We have used VLT/FLAMES optical spectroscopy to confirm the youth and membership of 19 new young diskless ...
Brown, Joanna M. +2 more
core +2 more sources
The Nature of Blue Stars with Mid-infrared Excesses in the Large Magellanic Cloud
The Astrophysical Journal Supplement Series, 2023 We present low-resolution optical spectra and classifications of 92 blue objects with mid-infrared excesses in the Large Magellanic Cloud. The majority of these objects were selected with the criteria of U − B < 0 and V < 17 from the potential young ...
Ryoko Ishioka +5 more
doaj +1 more source