Zobrazeno 1 - 10 of 174 pro vyhledávání: '"Barry Y. Welsh"'
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Akademický článek
The Appearance and Disappearance of Exocomet Gas Absorption
Autor: Barry Y. Welsh, Sharon L. Montgomery
Publikováno v: Advances in Astronomy, Vol 2015 (2015)
CaII K-line (3933 Å) absorption profiles observed towards 15 A-type and two B-type stars with known (or suspected) debris disks, in addition to archival spectral data for three A-type stars, are presented. Inspection of the extracted CaII K-line abs
Externí odkaz: https://doaj.org/article/e61315e1375f47f089c442d34f7b45a7
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2
A Radiatively Driven Wind from the eta Tel Debris Disk
Autor: Meredith A. MacGregor, Carol A. Grady, Barry Y. Welsh, Aki Roberge, Alycia J. Weinberger, Alexis Brandeker, Allison Youngblood, Sebastian Perez
We present far- and near-ultraviolet absorption spectroscopy of the $\sim$23 Myr edge-on debris disk surrounding the A0V star $\eta$ Telescopii, obtained with the Hubble Space Telescope Space Telescope Imaging Spectrograph. We detect absorption lines
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28aee0f365b4c9c5569e5f1ffe0e1a31
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3
The Surprisingly Low Carbon Mass in the Debris Disk around HD 32297
Autor: Thomas Henning, Péter Ábrahám, Maria Cavallius, Aki Roberge, Markus Janson, Alycia J. Weinberger, Ruben Asensio-Torres, William R. F. Dent, Göran Olofsson, Nagayoshi Ohashi, Alexis Brandeker, Inga Kamp, Gianni Cataldi, A. Meredith Hughes, Seth Redfield, Aya E. Higuchi, Barry Y. Welsh, Ágnes Kóspál, Attila Moór, Yanqin Wu, Carol A. Grady
Publikováno v: Astrophysical Journal, 892(2):99. IOP PUBLISHING LTD
The Astrophysical Journal
Gas has been detected in a number of debris disks. It is likely secondary, i.e. produced by colliding solids. Here, we report ALMA Band 8 observations of neutral carbon in the CO-rich debris disk around the 15--30 Myr old A-type star HD 32297. We fin
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79444e2e525ed5de5b826f7259667adc
https://research.rug.nl/en/publications/c7915c0e-451e-4dd9-b822-5cafca9daa43
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7
The Star-grazing Bodies in the HD 172555 System
Autor: P. Riviere Marichalar, Alexander Brown, Carol A. Grady, Inga Kamp, Barry Y. Welsh, Aki Roberge
Publikováno v: The Astronomical Journal, 155(6):242. IOP PUBLISHING LTD
Kiefer et al. reported the detection of infalling Ca II absorption in HD 172555, a member of the beta Pictoris Moving Group (beta PMG). We obtained HST Space Telescope Imaging Spectrograph and Cosmic Origins Spectrograph spectroscopy of this star at
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca849415fdc6b991898d3cbb62ffe857
https://research.rug.nl/en/publications/f0defc54-8897-42e3-be01-793d787fd1c7
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9
The Interstellar Sight-Line Towards the M33 Galaxy
Autor: Barry Y. Welsh, Rosine Lallement
Publikováno v: Publications of the Astronomical Society of the Pacific. 125:1455-1464
We present medium resolution ultraviolet absorption measurements recorded with the HST-COS and FUSE spectrographs towards the Wolf-Rayet star UIT-236 belonging to the BCLMP 99 HII region in the M33 galaxy. We have detected at least 5 major absorption
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::90343985853ccf8d443d572fbc9f9417
https://doi.org/10.1086/674201
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