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See detailEvidence of magnetic field decay in massive main-sequence stars
Fossati, L.; Schneider, F. R. N.; Castro, N. et al

in Astronomy and Astrophysics (2016), 592

A significant fraction of massive main-sequence stars show strong, large-scale magnetic fields. The origin of these fields, their lifetimes, and their role in shaping the characteristics and evolution of ... [more ▼]

A significant fraction of massive main-sequence stars show strong, large-scale magnetic fields. The origin of these fields, their lifetimes, and their role in shaping the characteristics and evolution of massive stars are currently not well understood. We compile a catalogue of 389 massive main-sequence stars, 61 of which are magnetic, and derive their fundamental parameters and ages. The two samples contain stars brighter than magnitude 9 in the V-band and range in mass between 5 and 100 M[SUB]⊙[/SUB]. We find that the fractional main-sequence age distribution of all considered stars follows what is expected for a magnitude limited sample, while that of magnetic stars shows a clear decrease towards the end of the main sequence. This dearth of old magnetic stars is independent of the choice of adopted stellar evolution tracks, and appears to become more prominent when considering only the most massive stars. We show that the decreasing trend in the distribution is significantly stronger than expected from magnetic flux conservation. We also find that binary rejuvenation and magnetic suppression of core convection are unlikely to be responsible for the observed lack of older magnetic massive stars, and conclude that its most probable cause is the decay of the magnetic field, over a time span longer than the stellar lifetime for the lowest considered masses, and shorter for the highest masses. We then investigate the spin-down ages of the slowly rotating magnetic massive stars and find them to exceed the stellar ages by far in many cases. The high fraction of very slowly rotating magnetic stars thus provides an independent argument for a decay of the magnetic fields. [less ▲]

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See detailLiquidity patterns in the US corporate bond market
Heck, Stéphanie ULiege; Margaritis, Dimitri; Muller, Aline ULiege

Conference (2015, December 18)

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See detailLiquidity patterns in the US corporate bond market
Heck, Stéphanie ULiege; Margaritis, Dimitri; Muller, Aline ULiege

Conference (2015, November 19)

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See detailLiquidity patterns on the US corporate bond market
Heck, Stéphanie ULiege; Margaritis, Dimitri; Muller, Aline ULiege

Conference (2014, December 13)

Liquidity commonality exists and empirical evidence (e.g. Lin et al., 2011) indicates that exposure to this common liquidity factor is priced in the cross-section of corporate bonds. The existence of ... [more ▼]

Liquidity commonality exists and empirical evidence (e.g. Lin et al., 2011) indicates that exposure to this common liquidity factor is priced in the cross-section of corporate bonds. The existence of commonality implies that part of a bond’s illiquidity is left as idiosyncratic. In this paper, we study how illiquidity components explain the cross-section of bond yields and how this relationship varies over time and across bond categories. We use a factor decomposition to break down total illiquidity into a common and an idiosyncratic component and analyze how yields relate differentially to each of these two components. We find that a bond’s idiosyncratic illiquidity is important, which might reflect informational asymmetries compounded by the lack of diversification in the institutional investors’ portfolios. Moreover, the relation between illiquidity and yield spreads appears to be negative during the recent crisis period. [less ▲]

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See detailThe role of segmentation and investor recognition through the lens of cross-listing activity
Mouchette, Xavier ULiege; Muller, Aline ULiege; Carrieri, Francesca

Conference (2014, August)

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See detailThe role of segmentation and investor recognition through the lens of cross-listing activity
Mouchette, Xavier ULiege; Carrieri, Francesca; Muller, Aline ULiege

Conference (2014, June)

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See detailThe role of segmentation and investor recognition through the lens of cross-listing activity
Mouchette, Xavier ULiege; Muller, Aline ULiege; Carrieri, Francesca

Conference (2014, June)

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See detailThe role of segmentation and investor recognition through the lens of cross‐listing activity
Mouchette, Xavier ULiege; Muller, Aline ULiege; Carrieri, Francesca

Conference (2014, June)

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See detailThe role of segmentation and investor recognition through the lens of cross-listing activity
Mouchette, Xavier ULiege; Muller, Aline ULiege; Carrieri, Francesca

Conference (2014, April)

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See detailThe role of segmentation and investor recognition through the lens of cross-listing activity
Mouchette, Xavier ULiege; Muller, Aline ULiege; Carrieri, Francesca

Scientific conference (2014, April)

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See detailThe role of segmentation and investor recognition through the lens of cross-listing activity
Mouchette, Xavier ULiege; Muller, Aline ULiege; Carrieri, Francesca

Scientific conference (2014, March)

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See detailWhen does the Market feel it? Magnitude, speed and persistence of market reactions to of cross-listings
Mouchette, Xavier ULiege; Biell, Elisabeth; Muller, Aline ULiege

E-print/Working paper (2014)

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See detailAn assessment of cross-listed firms’ diversification potential
Mouchette, Xavier ULiege; Muller, Aline ULiege

E-print/Working paper (2014)

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See detailThe role of segmentation and investor recognition trough the lens of cross-listing activity
Mouchette, Xavier ULiege; Carrieri, Francesca; Muller, Aline ULiege

E-print/Working paper (2014)

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See detailWhen does the market feel it ? Magnitude, speed and persistence of market reactions to cross-listings
Muller, Aline ULiege; Biell, Elizabeth; Mouchette, Xavier ULiege

Conference (2013, December 11)

Detailed reference viewed: 16 (6 ULiège)
See detailThe role of segmentation and investor recognition trough the lens of cross-listing activity
Mouchette, Xavier ULiege; Muller, Aline ULiege; Carrieri, Francesca

Diverse speeche and writing (2013)

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See detailThe role of segmentation and investor recognition trough the lens of cross-listing activity
Mouchette, Xavier ULiege; Carrieri, Francesca; Muller, Aline ULiege

Scientific conference (2013, September)

Detailed reference viewed: 26 (6 ULiège)