Zobrazeno 1 - 10
of 42
pro vyhledávání: '"C. Barnbaum"'
Autor:
Catherine L. Buchanan, Bruce J. Hrivnak, Michael P. Egan, Joel H. Kastner, William J. Forrest, Adam Frank, C. Barnbaum, Raghvendra Sahai
Publikováno v:
The Astronomical Journal. 132:1890-1909
We present an atlas of Spitzer Space Telescope Infrared Spectrograph (IRS) spectra of highly luminous, compact mid-infrared sources in the Large Magellanic Cloud. Sources were selected on the basis of infrared colors and 8 micron (MSX) fluxes indicat
Autor:
C. Barnbaum, Philip C. Keenan
Publikováno v:
The Astrophysical Journal. 518:859-865
The Hipparcos parallaxes of cool giants are utilized in two ways in this paper. First, a plot of reduced parallaxes of stars brighter than 6.5, as a function of spectral type, for the first time separates members of the clump from stars in the main g
Publikováno v:
The Astrophysical Journal. 500:466-470
We report the detection of both (J = 1-0) and (J = 2-1) CO emission from the oxygen-rich circumstellar envelope around a carbon star with an oxygen-rich circumstellar envelope, BM Gem. The line has two distinct components. Unique among mass-losing ca
Publikováno v:
Astronomy and Astrophysics Supplement Series. 129:45-68
We report systematic observations of millimeter CO emission from a sample of 109 oxygen–rich evolved stars (AGB and supergiants), colour–selected from the IRAS Point Source Catalog . CO has been searched with good sensitivity in 81 sources (74% o
Medium and high resolution spectroscopy of U Equulei from 1 to 4 microns during 1997-2003 has revealed information about its unusual circumstellar envelope, observed previously at optical and radio wavelengths. Strong absorption bands of H2O and of C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::388225c0b01aa89708edb4bb25dff31c
Publikováno v:
Nature. 426(6964)
Stars with masses in the range 1-8 solar masses (M(\circ)) live ordinary lives for approximately 10(9)-10(10) years, but die extraordinary deaths. First, during their death throes as asymptotic giant branch (AGB) stars they eject, over 10(4)-10(5) ye
Autor:
Alan R. Hildebrand, Bill Cooke, S. Nikolova, M. D. Campbell, M. J. Morrow, J. Bedient, P. Goetz, B. Tilton, C. Theijsmeijer, Ian S. Murray, B. A. Mcintosh, A. R. Webster, Martin Connors, K. J. Ellis, T. Montague, A. Jones, J. A. Gray, L. Gramer, M. A. Leake, C. Barnbaum, M. Treu, A. G. Leblanc, Robert Weryk, Simon P. Worden, J. K. Gaines, Peter Brown, S. Clifton, R. Spondor, R. L. Hawkes, R. K. Bartlett, D. Jewell, Martin Beech, M. Bedard, J. K. Looper, J. Jones, D. Babcock, Noah Brosch, Peter S. Gural, C. Vachon, J. Talarico, J. Robichaud
Publikováno v:
Leonid Storm Research ISBN: 9789048156245
A total of 18 image intensified CCD detectors were deployed at 6 locations (two in Negev Desert, Israel, and one in each of the Canary Islands, Long Key in Florida, Haleakala in Hawaii, and the Kwajalein Atoll) to provide a real-time reporting system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c795e2609a98c770c06d662730a6813c
https://doi.org/10.1007/978-94-017-2071-7_13
https://doi.org/10.1007/978-94-017-2071-7_13
Autor:
Kenneth H. Hinkle, C. Barnbaum
Publikováno v:
Science with Astronomical Near-Infrared Sky Surveys ISBN: 9789401044080
We have measured radial velocities of infrared photospheric lines observed in 37 bright carbon stars. The spectra were obtained on the Kitt Peak National Observatory 4 meter telescope with Fourier transform spectrometers between 1976 and 1988. The ob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ab0ece50260241d8f944377e01c6356
https://doi.org/10.1007/978-94-011-0946-8_33
https://doi.org/10.1007/978-94-011-0946-8_33
Autor:
C. Barnbaum, K. Hinkle
Publikováno v:
Astrophysics and Space Science. 217:151-152
Autor:
C. Barnbaum, P. C. Keenan
Publikováno v:
Publications of the Astronomical Society of the Pacific. 109:969
DY Per was confirmed photometrically as an R CrB variable by Alksnis in 1994. Spectra near maximum light show the high-speed ejection of matter (sodium at -174 km/sec in DY Per) characteristic of many of these variable stars. Moderate hydrogen defici