Results 121 to 130 of about 577 (218)

VARIABLE-STARS IN THE IRREGULAR GALAXY NGC-2366 (DDO-42)

, 1995
Observations of the resolved stars in the Irregular galaxy NGC 2366, obtained over the ten year period from March 1984 to March 1994, are presented. Thirty separate epochs were used to search for variable stars, and a total of 13 were found, of which 6 ...
HOESSEL, JG, SAHA, A, MCQUADE, K, TOLSTOY, E   +3 more
core   +1 more source

Variable stars in Galactic globular clusters

Astronomy & Astrophysics
We identified a sample of 88 bona fide Population II Cepheids (henceforth referred to as Cepheids) and 44 candidates in Galactic globular clusters (GCs). Seventy-eight of the Cepheids in the sample align within 2 σ of the period-luminosity relation for Milky Way Type II Cepheids (T2CEPs).
Mauricio Cruz Reyes, Richard I. Anderson, Susmita Das   +2 more
openaire   +2 more sources

The long-period variable stars of M33 [PDF]

, 1990
Infrared photometry of long-period variables (LPVs) in M33 shows that the majority of those identified up to now are supergiants. The period-luminosity relation for these stars yields a distance of M33 of 760 kpc with a 10 percent uncertainty.
Graham, James R., Neugebauer, Gerry, Elias, Jonathan, Mould, Jeremy, Matthews, Keith   +4 more
core  

Tumor immune microenvironment of self-identified African American and non-African American triple negative breast cancer. [PDF]

NPJ Breast Cancer, 2022
Marczyk M, Qing T, O'Meara T, Yagahoobi V, Pelekanou V, Bai Y, Reisenbichler E, Cole KS, Li X, Gunasekharan V, Ibrahim E, Fanucci K, Wei W, Rimm DL, Pusztai L, Blenman KRM.   +15 more
europepmc   +1 more source

Integrated analysis of whole blood oxylipin and cytokine responses after bacterial, viral, and T cell stimulation reveals new immune networks. [PDF]

iScience, 2023
Villain E, Chanson A, Mainka M, Kampschulte N, Le Faouder P, Bertrand-Michel J, Brandolini-Bulon M, Charbit B, Musvosvi M, Bilek N, Scriba TJ, Quintana-Murci L, Schebb NH, Duffy D, Gladine C, Milieu Interieur Consortium.   +15 more
europepmc   +1 more source

Determination of Cepheid parameters by light-curve template fitting

, 2005
We describe techniques to characterize the light curves of regular variable stars by applying principal component analysis (PCA) to a training set of high-quality data, and to fit the resulting light-curve templates to sparse and noisy photometry to ...
Nial R. Tanvir (7580816), A. Watkins (3507269), Watkins, A, Berdnikov, LN, L. N. Berdnikov (7589825), Tanvir, NR, Ngeow, CC, C. C. Ngeow (7589828), Hendry, MA, Kanbur, SM, M. A. Hendry (7589819), S. M. Kanbur (7589822)   +11 more
core   +1 more source

Toward a Comprehensive Grid of Cepheid Models with MESA. I. Uncertainties of the Evolutionary Tracks of Intermediate-mass Stars

The Astrophysical Journal Supplement Series
Helium-burning stars, in particular Cepheids, are especially difficult to model, as the choice of free parameters can greatly impact the shape of the blue loops—the part of the evolutionary track at which the instability strip is crossed.
O. Ziółkowska, R. Smolec, A. Thoul, E. Farrell, R. Singh Rathour, V. Hocdé   +5 more
doaj   +1 more source

Cepheid temperature and the Blazhko effect

, 1995
Two separate research projects were covered under this contract. The first project was to study the temperatures of Cepheid variable stars, while the second was a study of the Blazhko effect in RR Larae, both of them using IUE data. They will be reported
Teays, Terry
core  

Spatial Age Distribution of Classical Cepheids in Spiral Galaxies: The Cases of M31 and M33

The Astrophysical Journal Letters
Classical Cepheids can be used as age indicators due to well-established period–age and period–age–color relations. G. De Somma et al. refined these relations by including a metallicity term and different mass–luminosity assumptions.
Giulia De Somma, Marcella Marconi, Vincenzo Ripepi, Santi Cassisi, Roberto Molinaro, Ilaria Musella, Teresa Sicignano, Erasmo Trentin   +7 more
doaj   +1 more source

New Hydronephrosis in the Native Kidney Is Associated with the Development of De Novo Urinary Bladder Urothelial Carcinoma in Patients with Post-Kidney Transplantation. [PDF]

Healthcare (Basel), 2023
Ho CJ, Huang YH, Hsieh TY, Yang MH, Wang SC, Chen WJ, Sung WW, Chen SL.   +7 more
europepmc   +1 more source