Search Results - "Przybilla, N."

A SPECTROSCOPIC STUDY OF BLUE SUPERGIANT STARS IN THE SCULPTOR GALAXY NGC 55: CHEMICAL EVOLUTION AND DISTANCE by Kudritzki, R. P., Castro, N., Urbaneja, M. A., Ho, I.-T., Bresolin, F., Gieren, W., Pietrzy ski, G., Przybilla, N.

“…ABSTRACT Low-resolution (4.5-5 ) spectra of 58 blue supergiant stars distributed over the disk of the Magellanic spiral galaxy NGC 55 in the Sculptor group are…”
Get full text

A quantitative in-depth analysis of the prototype sdB+BD system SDSS J08205+0008 revisited in the Gaia era by Schaffenroth, V, Casewell, S L, Schneider, D, Kilkenny, D, Geier, S, Heber, U, Irrgang, A, Przybilla, N, Marsh, T R, Littlefair, S P, Dhillon, V S

“…ABSTRACT Subdwarf B stars are core-helium-burning stars located on the extreme horizontal branch (EHB). Extensive mass loss on the red giant branch is…”
Get full text

Helium enhanced stars and multiple populations along the horizontal branch of NGC 2808: direct spectroscopic measurements by Marino, A. F., Milone, A. P., Przybilla, N., Bergemann, M., Lind, K., Asplund, M., Cassisi, S., Catelan, M., Casagrande, L., Valcarce, A. A. R., Bedin, L. R., Cortés, C., D'Antona, F., Jerjen, H., Piotto, G., Schlesinger, K., Zoccali, M., Angeloni, R.

“…We present an abundance analysis of 96 horizontal branch (HB) stars in NGC 2808, a globular cluster exhibiting a complex multiple stellar population pattern…”
Get full text

Unravelling the baffling mystery of the ultrahot wind phenomenon in white dwarfs by Reindl, Nicole, Bainbridge, M, Przybilla, N, Geier, S, Prvák, M, Krtička, J, Østensen, R H, Telting, J, Werner, K

“…ABSTRACT The presence of ultrahigh excitation (UHE) absorption lines (e.g. O VIII) in the optical spectra of several of the hottest white dwarfs poses a…”
Get full text

Chemical abundances of the high-latitude Herbig Ae Star PDS2 by Cowley, C. R., Hubrig, S., Przybilla, N.

“…The Herbig Ae star PDS2 (CD -53... 251) is unusual in several ways. It has a high Galactic latitude, unrelated to any known star-forming region. It is at the…”
Get full text

C II Abundances in Early-Type Stars: Solution to a Notorious Non-LTE Problem by Nieva, M. F, Przybilla, N

“…We address a long-standing discrepancy between non-LTE analyses of the prominent C II 4267 and 6578/82 AA multiplets in early-type stars. A comprehensive…”
Get full text

The First DIRECT Distance Determination to a Detached Eclipsing Binary in M33 by Bonanos, A. Z, Stanek, K. Z, Kudritzki, R. P, Macri, L. M, Sasselov, D. D, Kaluzny, J, Stetson, P. B, Bersier, D, Bresolin, F, Matheson, T, Mochejska, B. J, Przybilla, N, Szentgyorgyi, A. H, Tonry, J, Torres, G

“…We present the first direct distance determination to a detached eclipsing binary in M33, which was found by the DIRECT Project. Located in the OB 66…”
Get full text

On the α-Element Abundance Gradients in the Disk of the Sculptor Spiral Galaxy NGC 300 by Urbaneja, M. A, Herrero, A, Bresolin, F, Kudritzki, R.-P, Gieren, W, Puls, J, Przybilla, N, Najarro, F, Pietrzyński, G

“…We have carried out a detailed spectral analysis of six early B-type supergiants in the Sculptor Group spiral galaxy NGC 300. To this end, we used…”
Get full text

First Stellar Abundances in NGC 6822 from VLT-UVES and Keck-HIRES Spectroscopy by Venn, K. A, Lennon, D. J, Kaufer, A, McCarthy, J. K, Przybilla, N, Kudritzki, R. P, Lemke, M, Skillman, E. D, Smartt, S. J

Get full text

Extragalactic stellar astronomy with the brightest stars in the universe by Kudritzki, R P, Urbaneja, M A, Bresolin, F, Przybilla, N

Get full text

Analysis of Four A-F Supergiants in M31 from Keck HIRES Spectroscopy by Venn, K. A, McCarthy, J. K, Lennon, D. J, Przybilla, N, Kudritzki, R. P, Lemke, M

Get full text

Quantitative spectroscopy of extreme helium stars Model atmospheres and a non-LTE abundance analysis of BD+10°2179 by Kupfer, T., Przybilla, N., Heber, U., Jeffery, C. S., Behara, N. T., Butler, K.

Get full text

The First DIRECT Distance to a Detached Eclipsing Binary in M33 by Bonanos, A Z, Stanek, K Z, Kudritzki, R P, Macri, L, Sasselov, D D, Kaluzny, J, Bersier, D, Bresolin, F, Matheson, T, Mochejska, B J, Przybilla, N, Szentgyorgyi, AH, Tonry, J, Torres, G

“…Issue Title: Close Binaries in the 21st Century: New Opportunities and Challenges (ProQuest: Abstract omitted; see image)[PUBLICATION ABSTRACT]…”
Get full text

Non-LTE Line Formation for Hydrogen Revisited by Przybilla, Norbert, Butler, Keith

“…We discuss aspects of non-LTE line formation for hydrogen in early-type stars. We evaluate the effect of variations in the electron-impact excitation cross…”
Get full text

B fields in OB stars (BOB): the magnetic triple stellar system HD 164492C in the Trifid nebula by González, J. F., Hubrig, S., Przybilla, N., Carroll, T., Nieva, M.-F., Ilyin, I., Järvinen, S., Morel, T., Schöller, M., Castro, N., Barbá, R., de Koter, A., Schneider, F. R. N., Kholtygin, A., Butler, K., Veramendi, M. E., Langer, N.

“…Abstract HD 164492C is a spectroscopic triple stellar system that has been recently detected to possess a strong magnetic field. We have obtained…”
Get full text

Magnetic field geometry and chemical abundance distribution of the He-strong star CPD −57°3509 by Hubrig, S., Przybilla, N., Korhonen, H., Ilyin, I., Schöller, M., Järvinen, S. P., Nieva, M.-F., Scholz, R.-D., Kimeswenger, S., Ramolla, M., Kholtygin, A. F., Briquet, M.

“…Abstract The magnetic field of CPD −57°3509 was recently detected in the framework of the BOB (B fields in OB stars) collaboration. We acquired low-resolution…”
Get full text

The Solar Hydrogen Spectrum in Non-Local Thermodynamic Equilibrium by Przybilla, Norbert, Butler, Keith

Get full text

A New Extragalactic Distance Determination Method Using the Flux-weighted Gravity of Late B and Early A Supergiants by Kudritzki, Rolf P, Bresolin, Fabio, Przybilla, Norbert

Get full text

Quantitative spectroscopy of B-type supergiants by Weßmayer, D, Przybilla, N, Butler, K

“…A&A 668, A92 (2022) Context. B-type supergiants are versatile tools to address various astrophysical topics, ranging from stellar atmospheres over stellar and…”
Get full text

The blue supergiant Sher 25 revisited in the Gaia era by Weßmayer, D, Przybilla, N, Ebenbichler, A, Aschenbrenner, P, Butler, K

“…A&A 677, A175 (2023) Aims. The evolutionary status of the blue supergiant Sher 25 and its membership to the massive cluster NGC 3603 are investigated. Methods…”
Get full text