Results 31 to 40 of about 22,441 (303)
Habitable Zone Lifetime of Exoplanets around Main Sequence Stars
, 2013 Funding: Dean's Scholarship at the University of East Anglia.The potential habitability of newly discovered exoplanets is initially assessed by determining whether their orbits fall within the circumstellar habitable zone of their star.
Claire, M. +3 more
core +1 more source
Photospheric abundance analysis of low mass pre-main sequence stars [PDF]
, 1992 The atmospheres of low mass pre-main sequence stars are extremely valuable tools for probing the composition of the star-forming interstellar medium. This thesis investigation uses photospheric abundance analysis techniques to determine metal abundances ...
Padgett, Deborah Lynne
core +1 more source
GalaxiesWe report new medium-resolution spectroscopy covering the wavelength range from 0.6 to 2.4 μm, as well as multi-epoch, multi-wavelength photometry, of the Class I high-mass embedded young stellar object Mol 12 (IRAS 05373+2349). It is embedded (AV≃12) in
Mauricio Tapia +3 more
doaj +1 more source
Stellar chromospheric activity in main-sequence stars [PDF]
The research presented here presents a narrow slice of several largescale, ground-based astronomy surveys focused on chromospheric activity measurements of stars from the Keck Observatory.
Isaacson, Howard
core +1 more source
Limits on the magnetic flux of a pre-main sequence star [PDF]
International Astronomical Union Colloquium, 1991 AbstractWe attempt to detect a magnetic field on the weak T Tauri star, TAP35, via the enhanced equivalent widths of Zeeman-broadened absorption lines. We synthesize 25 Fe I lines, having a range of Zeeman sensitivities, using an LTE Stokes line-transfer calculation.
G. Basri, G.W. Marcy
openaire +1 more source
A Distributed Population of Low-Mass Pre-Main-Sequence Stars near the Taurus Molecular Clouds [PDF]
, 2006 We present a drift-scan survey covering a ~5° × 50° region toward the southern portion of the Taurus-Auriga molecular cloud. Data taken in the B,R,I filters with the Quest-2 camera on the Palomar 48 inch (1.2 m) Samuel Oschin Telescope were combined with
Mamajek, Eric E. +7 more
core +1 more source
IRAC Observations of Taurus Pre–Main‐Sequence Stars [PDF]
The Astrophysical Journal, 2005 We present infrared photometry obtained with the IRAC camera on the Spitzer Space Telescope of a sample of 82 pre-main sequence stars and brown dwarfs in the Taurus star-forming region. We find a clear separation in some IRAC color-color diagrams between objects with and without disks. A few ``transition'' objects are noted, which correspond to systems
Hartmann, Lee +7 more
openaire +2 more sources
Pre main sequence stars as UV sources for the World Space Observatory-UV mission
, 2011 Pre-main sequence stars are bright UV (UV) sources compared with their main sequence analogues. The source of this excess is the high energy processes associated with the physics of accretion/outflow during early stellar evolution.
Sergei A. Lamzin +3 more
core +1 more source
Open Astronomy, 2010 Using photometric data of infrared surveys, young stellar object (YSO) status is verified for 141 objects selected in our previous papers in the Cassiopeia and Camelopardalis segment of the Milky Way bounded by Galactic coordinates (l, b) = (132-158 ...
Straižys V., Kazlauskas A.
doaj +1 more source
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