Zobrazeno 1 - 10
of 69
pro vyhledávání: '"H. M. Dyck"'
Publikováno v:
The Astronomical Journal. 124:3370-3378
We have obtained interferometric data for δ2 Lyrae, spectral type M4 II, at 1.25 and 1.65 μm at the Navy Prototype Optical Interferometer. This star has also been observed at the Mark III Optical Interferometer at optical wavelengths and at the Inf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f48e76a8a97f9b245776ae3aacae4b97
https://doi.org/10.1086/344483
https://doi.org/10.1086/344483
Autor:
Tyler E. Nordgren, H. M. Dyck
Publikováno v:
The Astronomical Journal. 124:541-545
We review the systematic variation between optical- and infrared-wavelength angular diameters reported for stars in the approximate range of spectral types K0–M6. We show that there is a correlation between the ratio of angular diameters and the de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5c93b4e9a58754ad80fc09e48ed1d28
https://doi.org/10.1086/341039
https://doi.org/10.1086/341039
Publikováno v:
The Astronomical Journal. 117:1609-1615
We have used Denver University's Ten-and-Twenty Micron Camera at the Wyoming Infrared Observatory to image 12 evolved stars at 11.5 μm. We have obtained both visibility data and photometric magnitudes from these images. We have partially resolved th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a23f6827874db159788e482cfeba1dd5
https://doi.org/10.1086/300772
https://doi.org/10.1086/300772
Publikováno v:
The Astronomical Journal. 116:981-986
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4800578c12db98bb5f96ece35e748ba4
https://doi.org/10.1086/300453
https://doi.org/10.1086/300453
In our continuing investigation of highly evolved stars, we report new interferometric angular diameter observations of 5 carbon and 4 S-type Mira variable stars, and 4 non-Mira S stars. From the data, effective temperatures and linear radii are calc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aecded7161c1e17bacc2456ea6cbd942
We present the result of IR observations in the K band of 39 bright AeBe stars in the northern hemisphere. Using the shift-and-add technique, we were able to detect nearby objects as close as 0.4'' from the primary star. We found 9 stars that have on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbffbaa346e5cb5ec4765b1ecdcec16c
Autor:
H. M. Dyck, J. A. Benson
A summary of observations of the angular diameters of the shells around evolved red giants is reported. Many of these sources are partially resolved with a ground-based 2.4-m telescope. We have concentrated our efforts in the 8 - 13 micron spectral r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf9d927f64f1c45b3f4753038bebfceb
https://doi.org/10.21236/ada236228
https://doi.org/10.21236/ada236228
Publikováno v:
SPIE Proceedings.
In this second paper on IRMA (Infrared Michelson Array) the control and data acquisition system for the instrument are described. This paper will concentrate on a description of the computer-siderostat control system. Three personal computer based sy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc30f75394ab860ae97845e6fad2d47a
https://doi.org/10.1117/12.19281
https://doi.org/10.1117/12.19281
Publikováno v:
The Astronomical Journal. 112:2147
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38233346f959c90dc68fb18ea9e3aaec
https://doi.org/10.1086/118170
https://doi.org/10.1086/118170