The Daily Brew
Selected astro-ph abstracts for Thursday April 24
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Metallicity and Alpha-Element Abundance Measurement in Red Giant Stars
from Medium Resolution Spectra
Evan N. Kirby, Puragra Guhathakurta and Christopher Sneden
arXiv:0804.3590
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Polaris the Cepheid returns: 4.5 years of monitoring from ground and
space
H. Bruntt, N. R. Evans, D. Stello, A. J. Penny, J. A. Eaton, D. L.
Buzasi, D. D. Sasselov, H. L. Preston, E. Miller-Ricci
arXiv:0804.3593
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Time Dilation in Type Ia Supernova Spectra at High Redshift
S. Blondin, T. M. Davis, K. Krisciunas, B. P. Schmidt, J. Sollerman,
W. M. Wood-Vasey, A. C. Becker, P. Challis, A. Clocchiatti, G. Damke, A. V.
Filippenko, R. J. Foley, P. M. Garnavich, S. W. Jha, R. P. Kirshner, B.
Leibundgut, W. Li, T. Matheson, G. Miknaitis, G. Narayan, G. Pignata, A.
Rest, A. G. Riess, J. M. Silverman, R. C. Smith, J. Spyromilio, M.
Stritzinger, C. W. Stubbs, N. B. Suntzeff, J. L. Tonry, B. E. Tucker, A.
Zenteno
arXiv:0804.3595
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Stellar dynamical evidence against a cold disc origin for stars in the
Galactic Centre
Jorge Cuadra (1), Philip J. Armitage (1), Richard D. Alexander (2,1)
((1) Colorado, (2) Leiden)
arXiv:0804.3596
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Supernova 1996cr: SN 1987A's Wild Cousin?
F. E. Bauer (1), V. V. Dwarkadas (2), W. N. Brandt (3), S. Immler (4),
S. Smartt (5), N. Bartel (6), and M. F. Bietenholz (6 and 7) ((1) Columbia,
(2) Chicago, (3) Penn State, (4) GSFC, (5) Queen's Belfast, (6) York, (7)
Hartebeesthoek Radio Observatory)
arXiv:0804.3597
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Spitzer Observations of Star Formation in the Extreme Outer Disk of M83
(NGC5236)
Hui Dong, Daniela Calzetti, Michael Regan, David Thilker, Luciana
Bianchi, Gerhardt R. Meurer, Fabian Walter
arXiv:0804.3632
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On `The spectral and temporal properties of an Ultra--Luminous X-ray
source in NGC 6946', by Senorita Devi et al
A.R. King
arXiv:0804.3760
Other Papers:
- Gravitational Instability in Radiation Pressure Dominated Backgrounds
arXiv:0804.3403
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