Results 41 to 50 of about 1,730 (181)
The effect of metallicity on Cepheid magnitudes and the distance to M33 [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We present the results from a multi-epoch survey of two regions of M33 using the 3.5-m Wisconsin-Indiana-Yale-NOAO (WIYN) telescope. The inner field is located close to the centre of the galaxy, with the outer region situated about 5.1 kpc away in the southern spiral arm, allowing us to sample a large metallicity range. We have data for 167 fundamental
Vicky Scowcroft +5 more
openaire +4 more sources
Health Science Reports, Volume 9, Issue 3, March 2026.ABSTRACT Background and Aim Cervical cancer is a major public health issue in Botswana, driven by high HIV prevalence and limited screening access. Molecular detection of high‐risk human papillomavirus (hrHPV) is crucial for prevention and early diagnosis.
Leabaneng Tawe
wiley +1 more source
The Cepheid Distance to NGC 4414 [PDF]
International Astronomical Union Colloquium, 2000 AbstractA search for Cepheids in NGC 4414 has been performed using HST archive data. Accurate photometry for this galaxy is challenging due to its high surface brightness background with steep gradients and the rather low S/N of stellar point sources.
openaire +1 more source
Cepheid distances from the Baade–Wesselink method [PDF]
Proceedings of the International Astronomical Union, 2012 AbstractRecent progress on Baade–Wesselink (BW)-type techniques to determine the distances to classical Cepheids is reviewed. Particular emphasis is placed on the near-infrared surface-brightness (IRSB) version of the BW method. Its most recent calibration is described and shown to be capable of yielding individual Cepheid distances accurate to 6 ...
Gieren, Wolfgang +7 more
openaire +2 more sources
RR Lyrae and Type II Cepheid Variables in Globular Clusters: Optical and Infrared Properties
Universe, 2022 Globular clusters are both primary fossils of galactic evolution and formation and are ideal laboratories for constraining the evolution of low-mass and metal-poor stars.
Anupam Bhardwaj
doaj +1 more source
Drug and Alcohol Review, Volume 45, Issue 3, March 2026.ABSTRACT Introduction Opioid agonist treatment (OAT) is one of the most effective treatments for opioid dependence, but there can be barriers to accessing treatment. This study examined characteristics associated with OAT engagement—never, previous or current—among people with opioid dependence in NSW, Australia, following recent reforms to OAT access.
Thomas Santo Jr +11 more
wiley +1 more source
The Classical Cepheid Distance scale in the NIR bands [PDF]
Journal of Physics: Conference Series, 2012 The Period-Luminosity (PL) relation of classical Cepheids is one of the most popular standard candle, being the first rung of the cosmic distance ladder. We discuss both theoretical and empirical features of the PL, Period-Luminosity-Color (PLC) and Period-Wesenheit (PW) relations using the largest optical (V,I; OGLEIII) and near-infrared (NIR, J,H,Ks;
Inno L. +7 more
openaire +2 more sources
The Astronomical JournalIt is beneficial to calibrate the period–Wesenheit–metallicity relation (PWZR) of Delta Cephei stars (DCEPs), i.e., classical Cepheids, using accurate parallaxes of associated open clusters (OCs) from Gaia data release 3 (DR3).
Huajian Wang +5 more
doaj +1 more source
Causes and Seasonality of Upper Respiratory Infections in Adults in Lesotho (2021–2022) (CORIAL)
Canadian Journal of Infectious Diseases and Medical Microbiology, Volume 2026, Issue 1, 2026.Background Upper respiratory tract infections cause morbidity and a high burden on healthcare systems worldwide, especially in low‐ and lower middle‐income countries. Recent studies throughout Africa indicate seasonal patterns that deviate from those previously described in settings with temperate climates.
Nikita Sass +15 more
wiley +1 more source