Results 61 to 70 of about 8,488 (185)

A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context

The Astronomical Journal
A detailed analysis of the structural, astrophysical, kinematic, and dynamical properties of the open clusters Roslund 3 and Ruprecht 174 is carried out using CCD UBV photometry in conjunction with astrometric and photometric data from Gaia DR3 ...
Hülya Karagöz, Talar Yontan, Selçuk Bilir, Olcay Plevne, Tansel Ak, Serap Ak, Remziye Canbay, Timothy Banks   +7 more
doaj   +1 more source

Fundamental parameters and infrared excesses of Hipparcos stars

, 2012
We derive the fundamental parameters (temperature and luminosity) of 107 619 Hipparcos stars and place these stars on a true Hertzsprung-Russell diagram.
A. A. Zijlstra, Aihara, Allard, Beichmann, Bergeat, Bertelli, Boyer, Boyer, Chen, Cho, Dotter, Egan, ESA, Evans, Gezari, Gray, Gray, Groenewegen, Gustafsson, Gustafsson, Höfner, I. McDonald, Ita, Ita, Ita, Kastner, Knapp, Kraemer, Kwan, Kwok, Ladjal, Libert, Luck, Lutz, M. L. Boyer, Marigo, McDonald, McDonald, McDonald, McDonald, McDonald, McDonald, McDonald, Meyer, Miville-Deschênes, Momany, Norris, Oudmaijer, Perryman, Price, Price, Samus, Skrutskie, Sloan, Sloan, Sloan, Sloan, Tatebe, Ueta, Ueta, Valdes, Van Eck, van Leeuwen, Wallace, Wallace, Wareing, Woods, Wright, Wu   +68 more
core   +1 more source

The VISCACHA Survey XV: Tracing the 3D Structure and Chemical Evolution of the Outskirts of the Large Magellanic Cloud from Star Clusters

The Astrophysical Journal
The Large Magellanic Cloud (LMC) is the Milky Way’s most massive satellite. Its interactions with the Small Magellanic Cloud are expected to leave imprints on its structure and evolution. In this work, we use the LMC outer star cluster population to seek
Bernardo P. L. Ferreira, João F. C. Santos Jr., Bruno Dias, Francisco F. S. Maia, Saroon Sasi, Pieter Westera, Raphael A. P. Oliveira, Stefano O. Souza, José G. Fernández-Trincado, Leandro Kerber, Bruno Quint, David Sanmartim, Luciano Fraga, Tina Armond, (The VISCACHA Team)   +14 more
doaj   +1 more source

PANCAKE: A Python-based Numerical Color–Magnitude Diagram Analysis Package

The Astrophysical Journal Supplement Series
Stellar populations serve as a fossil record of galaxy formation and evolution, providing crucial information about the history of star formation and galaxy evolution.
Yun Zheng, Yujiao Yang, Yong-Kun Zhang, Zheng Zheng, Jing Wang, Lister Staveley-Smith, Chao-Wei Tsai, Di Li, Chao Liu, Jingjing Hu, Huaxi Chen, Donghui Quan, Yinghui Zheng, Hangyuan Li   +13 more
doaj   +1 more source

Asteroseismology of red giants & galactic archaeology

, 2017
Red-giant stars are low- to intermediate-mass ($M \lesssim 10$~M$_{\odot}$) stars that have exhausted hydrogen in the core. These extended, cool and hence red stars are key targets for stellar evolution studies as well as galactic studies for several ...
A. Baglin, A. Datta, A. Helmi, A. Miglio, B. Mosser, B. Mosser, B. Mosser, B. Mosser, B. Paxton, C. Aerts, C. Allende Prieto, C. Chiappini, D. Kawata, D. Stello, D. Yong, D.R. Soderblom, E. Böhm-Vitense, E. Guggenberger, E.P. Bellinger, G.C. Angelou, G.R. Ricker, H. Kjeldsen, H. Lamb, H. Rauer, H.-W. Rix, I. Minchev, I. Minchev, J. Bland-Hawthorn, J. Bovy, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Kumamoto, J. Lattanzio, K. Belkacem, K. Freeman, K. Schwarzschild, L. Girardi, L. Lindegren, M. Bergemann, M. Gabriel, M. Martig, M. Martig, M. Ness, M. Ness, M. Ness, M. Tassoul, M.A.C. Perryman, M.R. Merrifield, N. Gai, N. Langer, O. Creevey, P. Gaulme, P. Goldreich, P. Goldreich, P. Jofré, P. Ledoux, R. Kippenhahn, R. Trampedach, R.K. Ulrich, S. Hekker, S. Hekker, S. Refsdal, S. Sharma, S.B. Howell, S.R. Loebman, T. Constantino, T. Kallinger, T.M. Brown, T.R. Bedding, T.R. White, V.M. Canuto, W.J. Borucki, W.J. Chaplin   +72 more
core   +1 more source

X rays from old open clusters: M 67 and NGC 188 [PDF]

, 1998
We have observed the old open clusters M 67 and NGC 188 with the ROSAT PSPC. In M 67 we detect a variety of X-ray sources. The X-ray emission by a cataclysmic variable, a single hot white dwarf, two contact binaries, and some RS CVn systems is as ...
Belloni, T., Mathieu, R. D., Verbunt, F.
core   +2 more sources

The Star Formation History of Nearby Galaxies: A Machine Learning Approach

The Astrophysical Journal
Reproducing color–magnitude diagrams (CMDs) of star-resolved galaxies is one of the most precise methods for measuring the star formation history (SFH) of nearby galaxies back to the earliest time.
Yujiao Yang, Chao Liu, Ming Yang, Yun Zheng, Hao Tian   +4 more
doaj   +1 more source

The Ages of Pre-main-sequence Stars

, 1998
The position of pre-main-sequence or protostars in the Hertzsprung--Russell diagram is often used to determine their mass and age by comparison with pre-main-sequence evolution tracks.
Alexander, Anders, Baraffe, Bell, Boss, Carpenter, Christopher A. Tout, Cohen, D'Antona, Eggleton, Eggleton, Eggleton, Gullbring, Hartmann, Hartmann, Hayashi, Henyey, Hillenbrand, Ian A. Bonnell, Iglesias, Kenyon, Kenyon, Kroupa, Larson, Larson, Lin, Low, Mario Livio, Mercer-Smith, Muzerolle, Palla, Pols, Rees, Rubin, Siess, Siess, Stahler, Stahler, Stahler, Stahler, Stahler, Tout, Tout, Warner, Winkler, Woolley   +45 more
core   +2 more sources

A comprehensive study of δ Scuti-type pulsators in eclipsing binaries: Oscillating eclipsing Algols

Astronomy & Astrophysics
Eclipsing double-lined spectroscopic binaries (SB2s) hosting δ Scuti-type pulsators offer a unique laboratory for simultaneously constraining stellar geometry and interior structure.
Pawar T., Miszuda A., Hełminiak K. G., Marcadon F., Moharana A., Pawar G., Konacki M.   +6 more
doaj   +1 more source

Fundamental parameters, integrated RGB mass loss and dust production in the Galactic globular cluster 47 Tucanae

, 2011
Fundamental parameters and time-evolution of mass loss are investigated for post-main-sequence stars in the Galactic globular cluster 47 Tucanae (NGC 104).
A. A. Zijlstra, B. Babler, B. Shiao, B. Whitney, Barmby, Bowen, Boyer, Boyer, Boyer, Catelan, Clement, Dotter, Dupree, Fazio, Feast, Forte, Fusi Pecci, Gehrz, Gordon, Gustafsson, Harris, I. McDonald, Ita, J. L. Hora, J. Th. van Loon, K. Gordon, K. Misselt, Karakas, Koch, Lamers, Lebzelter, Lee, M. Block, M. L. Boyer, M. Meade, M. Meixner, M. Sewiło, Mandushev, Matsunaga, McClure, McDonald, McDonald, McDonald, McLaughlin, McWilliam, Meylan, Origlia, Origlia, Origlia, Origlia, Percival, Reimers, Rieke, Schröder, Skrutskie, Stetson, T. Robitaille, Ulmschneider, van Loon, Werner, Zaritsky, Zinner, Zubko   +62 more
core   +1 more source