Results 31 to 40 of about 199,190 (345)
Studying the UV Mg II Resonance Lines in 20 Be Stars
Open Astronomy, 2011 Using the GR model, we analyze the UV Mg II resonance lines in the spectra of 20 Be stars of different spectral subtypes, in order to detect the presence of satellite or discrete absorption components. The values of some physical parameters – rotational,
Antoniou A. +3 more
doaj +1 more source
High Resolution Emission Line Profiles in Blue Luminous Stars [PDF]
International Astronomical Union Colloquium, 1989 Emission lines are often observed in high luminosity stars and provide evidence of the presence of extended stellar envelopes. Ha is the most frequently observed across the H-R diagram, but lines of Hel or Fell are also found in emission in these stars. They could be used as diagnostics of the structure of their outer atmospheres and winds.
Bandiera R +4 more
openaire +2 more sources
Star Formation in the Ultraviolet
Galaxies, 2020 With the launch of JWST and the upcoming installation of extremely large telescopes, the first galaxies in our Universe will finally be revealed.
Jorick S. Vink
doaj +1 more source
Symbiotic stars and other Hα emission-line stars towards the Galactic bulge★ [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 Symbiotic stars are interacting binaries with the longest orbital periods and their multi-component structure makes them rich astrophysical laboratories. The accretion of a high mass loss rate red giant wind on to a white dwarf (WD) makes them promising Type Ia supernovae (SNe Ia) progenitors.
B. Miszalski +2 more
openaire +2 more sources
Bloated stars as AGN broad-line clouds: the emission-line spectrum [PDF]
Monthly Notices of the Royal Astronomical Society, 1994 22 pages (including figures) uuencoded, compressed postscript file, (***REVISED TO FIX UUENCODE PROBLEM***), Wise observatory preprint series ...
Alexander, Tal, Netzer, Hagai
openaire +2 more sources
High-resolution, H band Spectroscopy of Be Stars with SDSS-III/APOGEE: I. New Be Stars, Line Identifications, and Line Profiles [PDF]
, 2014 APOGEE has amassed the largest ever collection of multi-epoch, high-resolution (R~22,500), H-band spectra for B-type emission line (Be) stars. The 128/238 APOGEE Be stars for which emission had never previously been reported serve to increase the total ...
Beaton, Rachael +28 more
core +3 more sources
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
Bloated stars as AGN broad-line clouds: the emission-line profiles [PDF]
Monthly Notices of the Royal Astronomical Society, 1997 13 pages with 10 figures, LaTeX using mn.sty and epsf.sty, to appear in ...
Alexander, Tal, Netzer, Hagai
openaire +2 more sources
A near-infrared survey for Galactic Wolf-Rayet stars
, 2002 Initial results, techniques, and rationale for a near-infrared survey of evolved emission-line stars toward the Galactic Center are presented. We use images taken through narrow-band emission-line and continuum filters to select candidates for ...
Blum, R. +4 more
core +2 more sources
FEBS Letters, EarlyView.Bone metastasis in prostate cancer (PCa) patients is a clinical hurdle due to the poor understanding of the supportive bone microenvironment. Here, we identify stearoyl‐CoA desaturase (SCD) as a tumor‐promoting enzyme and potential therapeutic target in bone metastatic PCa.
Alexis Wilson +7 more
wiley +1 more source