Tracing the origin of neutron-capture elements in the metalpoor star HE 1244-3036 [PDF]
EPJ Web of ConferencesWe present results from a detailed abundance analysis of a star HE 1244-3036, based on a high resolution (R ∼ 50000) SUBARU/HDS spectrum. The wavelength coverage is from 3510 to 5310 Å. Our estimated metallicity [Fe/H] ∼ −2.5 and carbon abundance ([C/Fe]
Dutta Debasish, Goswami Aruna
doaj +1 more source
Abundant hydrocarbons in the disk around a very-low-mass star [PDF]
ScienceVery-low-mass stars (those less than 0.3 solar masses) host orbiting terrestrial planets more frequently than other types of stars. The compositions of those planets are largely unknown but are expected to relate to the protoplanetary disk in which they ...
A. M. Arabhavi +42 more
semanticscholar +1 more source
HIFI detection of hydrogen fluoride in the carbon star envelope IRC +10216 [PDF]
, 2011 We report the detection of emission in the J = 1−0 rotational transition of hydrogen fluoride (HF), together with observations of the J = 1−0 to J = 3−2 rotational lines of H35Cl and H37Cl, towards the envelope of the carbon star IRC +10216.
M. Agúndez +7 more
semanticscholar +1 more source
An equatorial ultra iron-poor star identified in BOSS
, 2015 We report the discovery of SDSS J131326.89-001941.4, an ultra iron-poor red giant star ([Fe/H] ~ -4.3) with a very high carbon abundance ([C/Fe]~ +2.5).
Aguado, D. S. +8 more
core +1 more source
SDSS J142625.71+575218.3: the First Pulsating White Dwarf With A Large Detectable Magnetic Field [PDF]
, 2008 We report the discovery of a strong magnetic field in the unique pulsating carbon- atmosphere white dwarf SDSS J142625.71 + 575218.3. From spectra gathered at the MMT and Keck telescopes, we infer a surface field of B(s) similar or equal to 1.2 MG, based
Dufour, P. +4 more
core +2 more sources
The mass-loss return from evolved stars to the Large Magellanic Cloud - V. The GRAMS carbon-star model grid [PDF]
, 2011 The total dust return rate from AGB and RSG star outflows is an important constraint to galactic chemical evolution models. However, this requires detailed radiative transfer (RT) modeling of individual stars, which becomes impractical for large data ...
S. Srinivasan, B. Sargent, M. Meixner
semanticscholar +1 more source
Warm water vapour in the sooty outflow from a luminous carbon star [PDF]
Nature, 2010 The detection of circumstellar water vapour around the ageing carbon star IRC +10216 challenged the current understanding of chemistry in old stars, because water was predicted to be almost absent in carbon-rich stars.
L. Decin +36 more
semanticscholar +1 more source
The orbital motion, absolute mass, and high-altitude winds of exoplanet HD209458b
, 2010 For extrasolar planets discovered using the radial velocity method, the spectral characterization of the host star leads to a mass-estimate of the star and subsequently of the orbiting planet. In contrast, if also the orbital velocity of the planet would
Albrecht, Simon +3 more
core +1 more source
IRAS04496-6958: A luminous carbon star with silicate dust in the Large Magellanic Cloud [PDF]
, 1999 We describe ISO observations of the obscured Asymptotic Giant Branch (AGB) star IRAS04496-6958 in the Large Magellanic Cloud (LMC). This star has been classified as a carbon star.
Blommaert, J. A. D. L. +9 more
core +3 more sources
Wolf 1465: Not a Bright Dwarf Carbon Star
, 2018 Wolf 1465 has been suggested as a candidate for a bright dwarf carbon star.
Dimitriadis, Georgios, Margon, Bruce
core +1 more source