Mira variable stars - Open Access .click

Results 71 to 80 of about 411 (243)

Early Versus Late Recurrence in Olfactory Neuroblastoma: A Multi‐Institutional Analysis of Predictive Risk Factors

International Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Background Olfactory neuroblastoma (ONB) exhibits variable recurrence patterns, with significant late recurrences occurring years after treatment. We investigated cutoff periods to define late recurrence and identified predictors that distinguish patients at risk of late recurrence from those considered cured.
Alexandria Harris +23 more
wiley +1 more source

Absolute Calibration of Cluster Mira Variables to Provide a New Anchor for the Hubble Constant Determination

The Astrophysical Journal
Mira variables in globular clusters can provide an accurate and precise absolute calibration of their period–luminosity relations (PLRs) to independently anchor the cosmic distance scale and determine the Hubble constant.
Anupam Bhardwaj +4 more
doaj +1 more source

VLTI-GRAVITY measurements of cool evolved stars

Astronomy & Astrophysics
Aims. The mass-loss process of red supergiant (RSG) and asymptotic giant branch (AGB) stars and its relation to variability are poorly constrained. We aim to study the photosphere and near-surface atmospheric structure, where the mass-loss is initiated ...
Jadlovský Daniel +11 more
doaj +1 more source

A Multiwavelength Study of the Symbiotic Mira HM Sge with SOFIA and HST

The Astrophysical Journal
We have targeted the dusty symbiotic Mira system HM Sge with four instruments from the IR to the UV. We have used these observations along with archival observations to study how the system has been evolving after its 1975 nova-like outburst.
Steven R. Goldman +5 more
doaj +1 more source

The Mira Distance to M101 and a 4% Measurement of H 0

The Astrophysical Journal
The giant spiral galaxy M101 is host to the nearest recent Type Ia supernova (SN 2011fe) and thus has been extensively monitored in the near-infrared to study the late-time light curve of the SN.
Caroline D. Huang +10 more
doaj +1 more source

Annatto‐Derived Carotenoids (Bixin and Norbixin) As Biodiesel Antioxidants: Characterization and Effects on Oxidative Stability (Rancimat and PetroOXY)

Journal of the American Oil Chemists' Society, EarlyView.
Annatto‐derived bixin and norbixin were characterized and evaluated as natural antioxidants for soybean biodiesel. Their antioxidant performance and effects on oxidative stability were assessed using DPPH, Rancimat, and PetroOXY methods. ABSTRACT The increasing use of eco‐friendly fuels is increasing the production of biodiesel but soybean biodiesel is
Marco Aurélio da Silva Coutinho +4 more
wiley +1 more source

Revisiting the Milky Way stellar long bar and the 3 kpc arm★

Astronomy & Astrophysics
Context. One of the most difficult and unexplored regions of the Milky Way is the highly extincted in-plane central region within the Galactic coordinates 10◦ ≲ |ℓ| ≲ 30◦, |b| ≲ 3◦, where we have the long-bar and 3 kpc arm with intermediate-age stellar ...
López-Corredoira M., Wu W., Wang H.-F., Garzón F. +3 more
doaj +1 more source

Higher Complement C4 Gene Copy Number Constitutes a Shared Genetic Risk Factor for Giant Cell Arteritis and IgA Vasculitis

Arthritis &Rheumatology, EarlyView.
Objective Low copy number (CN) of complement C4 isoforms and high CN of retroviral HERV‐K elements are known risk factors for many immune‐mediated inflammatory diseases (IMIDs), often showing sex‐biased effects. Here, we assessed whether CN variation within the C4 gene contributes to giant cell arteritis (GCA) and IgA vasculitis (IgAV), two complex ...
Laura Martínez‐Gutiérrez +295 more
wiley +1 more source

Mid-infrared JWST Spectra of Carbon Stars in the Large Magellanic Cloud

The Astrophysical Journal
Mid-infrared spectra from the Medium Resolution Spectrometer (MRS) on the James Webb Space Telescope have revealed the molecular chemistry of carbon stars in the Large Magellanic Cloud with better resolution and sensitivity than previously possible.
G. C. Sloan +13 more
doaj +1 more source

The Bochum Survey of the Southern Galactic Disk: IV. Multi‐Band Photometry

Astronomische Nachrichten, EarlyView.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°‐wide stripe in the southern galactic disk from September 2010 to September 2019. These fields were observed between 21 and 407 times sim r′$$ {r}^{\prime } $$ultaneously in (8mag≲r′≲18mag$$ 8\kern0.6em \mathrm{mag}\lesssim {r}^{\prime}\lesssim 18\kern0.6em ...
Julia Blex +9 more
wiley +1 more source

asymptotic giant branch stars
astronomy
distance indicators

stars: agb and post-agb