Results 11 to 20 of about 3,144 (170)

Dusty Blue Supergiants: News from High-Angular Resolution Observations

Advances in Astronomy, 2014
An overview is presented of the recent advances in understanding the B[e] phenomenon among blue supergiant stars in light of high-angular resolution observations and with an emphasis on the results obtained by means of long baseline optical stellar ...
W. J. de Wit, R. D. Oudmaijer, J. S. Vink   +2 more
doaj   +2 more sources

Wind variability of B supergiants [PDF]

, 2002
We present the most suitable data sets available in the International Ultraviolet Explorer (IUE) archive for the study of time-dependent stellar winds in early B supergiants.
Fullerton, A.W., D. Massa, R. K. Prinja, A. W. Fullerton, Massa, D., Prinja, R.K.   +5 more
core   +1 more source

Impact of Giant Iceberg A68A on the Physical Conditions of the Surface South Atlantic, Derived Using Remote Sensing

Geophysical Research Letters, Volume 50, Issue 18, 28 September 2023., 2023
Abstract Giant icebergs release cold, fresh meltwater as they drift, perturbing the physical conditions of the surface ocean. This study uses satellite‐derived sea surface salinity and temperature measurements to explore the physical impact of supergiant iceberg A68A between September 2020 and June 2021.
R. M. Smith, G. R. Bigg
wiley   +1 more source

New Candidate Massive Clusters from 2MASS [PDF]

, 2013
Massive stars are important for the evolution of the interstellar medium. The detailed study of their properties (such as mass loss, rotation, magnetic fields) is enormously facilitated by samples of these objects in young massive galactic star clusters.
Dirk Froebrich, Froebrich, Dirk
core   +1 more source

Surface abundances of OC supergiants [PDF]

, 2016
International audienceContext. Some O and B stars show unusually strong or weak lines of carbon and/or nitrogen. These objects are classified as OBN or OBC stars.
Barba, R., R. Barbá, Barba, R, F. Martins, Foschino, S, Bouret, J-C, S. Foschino, J.-C. Bouret, Bouret, J. -C., I. Howarth, Foschino, S., Martins, F, Howarth, I, Howarth, I., Martins, F.   +14 more
core   +1 more source

The period-luminosity relation of red supergiants with Gaia DR2 [PDF]

, 2019
We revisit the K -band period-luminosity (P-L) relations of Galactic red supergiants using Gaia Data Release 2 parallaxes and up to 70 yr of photometry from AAVSO and ASAS campaigns.
Kiss, L. László, Murphy, Simon J., Bedding, Timothy R., Dobie, Dougal, Kiss, Laszlo L., Kiss, László L, Grindlay, Jonathan E., Chatys, Filip W., Bedding, Timothy R, Murphy, Simon J, Chatys, Filip W, Grindlay, Jonathan   +11 more
core   +1 more source

The robustness of bi-stability jump predictions

Astronomy & Astrophysics
The bi-stability (BS) jump comes from a long-standing theoretical prediction of radiatively driven wind theory, associated with Fe IV/Fe III recombination around Teff ≃ 21–25 kK.
Vink Jorick S., Sabhahit Gautham N., Sander Andreas A. C.   +2 more
doaj   +1 more source

Another cluster of red supergiants close to RSGC1 [PDF]

, 2010
Context. Recent studies have revealed massive star clusters in a region of the Milky Way close to the tip of the Long Bar. These clusters are heavily obscured and are characterised by a population of red supergiants. Aims.
J. S. Clark, S. Martínez-Núñez, Marco, A., I. Negueruela, Martínez-Núñez, S., A. Marco, Clark, J. S., González-Fernández, C., Negueruela, I., C. González-Fernández   +9 more
core   +1 more source

Subsurface Hydrocarbon Biodegradation in the Context of Microbial Habitability and Hydrogeologic, Thermal, and Geologic Evolution of the Colorado Plateau

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Subsurface microbial ecosystems associated with hydrocarbon reservoirs are shaped by temperature, salinity, redox gradients, and fluid flow. However, the drivers of microbial activity and hydrocarbon biodegradation over geologic timescales remain poorly constrained.
Meera P. Shah, Jennifer McIntosh, Peter Reiners, Lydia Bailey, Bradley S. Stevenson, Grant Ferguson, Ji‐Hyun Kim, Henrik Drake, Magdalena R. Osburn   +8 more
wiley   +1 more source

Silicate and hydrocarbon emission from Galactic M supergiants [PDF]

, 1998
Following our discovery of unidentified infrared (UIR) band emission in a number of M supergiants in h and χ Per, we have obtained 10-μm spectra of a sample of 60 galactic M supergiants. Only three new sources, V1749 Cyg, UW Aql and IRC+40 427, appear to
Skinner, CJ, Sylvester, RJ, Barlow, MJ
core   +1 more source