Results 111 to 120 of about 74,495 (201)

Chemical Fingerprints of M Dwarfs: High-resolution Spectroscopy on 31 M Dwarfs with SPIRou

The Astrophysical Journal
We extend the methodology introduced by F. Jahandar et al. to determine the effective temperature and chemical abundances of 31 slowly rotating solar neighborhood M dwarfs (M1–M5) using high-resolution spectra from CFHT/SPIRou.
Farbod Jahandar, René Doyon, Étienne Artigau, Neil J. Cook, Charles Cadieux, Jean-François Donati, Nicolas B. Cowan, Ryan Cloutier, Stefan Pelletier, Alan Alves-Brito, Jorge H. C. Martins, Hsien Shang, Andrés Carmona   +12 more
doaj   +1 more source

The stellar calcium lines in spectral types A and B.

The Astrophysical Journal, 1929
O. Struve, C. D. Higgs
openaire   +1 more source

Faint stellar spectral-type standards for objective-prism plates from the UK 1.2-m Schmidt [PDF]

Monthly Notices of the Royal Astronomical Society, 1980
P. A. Krug, D. C. Morton, K. P. Tritton
openaire   +1 more source

Measuring the magnetic fields in the chromospheres of low-mass stars. [PDF]

Nat Commun
Cang T, Petit P, Donati JF, Tian H, Fu J, Li H, Bellotti S, Hu X, Ma X, Lopez Ariste A, Xing K, Morin J, Lu H, Zong W.   +13 more
europepmc   +2 more sources

The Cold Debris Disk Surveys. I. Host Star Properties

The Astronomical Journal
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 (CDDS).
Scott J. Kenyon, Benjamin C. Bromley, Joan R. Najita   +2 more
doaj   +1 more source

Empirical Prediction of Plasma Emission Measure Distributions and X-Ray/Extreme-ultraviolet Spectra of Late-type Stars

The Astrophysical Journal
High-energy emission spectra from the outer atmospheres of late-type stars represent an important feature of the stellar activity in several contexts, such as the photoevaporation and photochemistry of planetary atmospheres or the modeling of irradiated ...
A. Maggio, I. Pillitteri, J. Sanz-Forcada, G. Micela   +3 more
doaj   +1 more source

Diagnostic tool for stellar spectral type classification

Computational diagnostic tool for stellar spectral type classification. The tool will be accompanied by relevant publications / reports published in the project website.
openaire   +1 more source

Absolute spectral energy distributions of common stellar types.

The Astronomical Journal, 1973
openaire   +1 more source

Comments on the Paper "Fundamental Stellar Photometry for Standards of Spectral Type on the Revised System of the Yerkes Spectral Atlas " by H.L. Johnson and W.W. Morgan (1953)

, 1999
This short paper is to be published as part of the centennial celebrations of the American Astronomical Society. It presents some historical background on, and discusses the importance of, the 1953 paper by H.L. Johnson and W.W. Morgan, in which these authors introduced the UBV photometric system and the MK system of spectroscopic classification.
openaire   +2 more sources

Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas

The Astrophysical Journal, 1953
H. L. Johnson, W. W. Morgan
openaire   +1 more source