Results 1 to 10 of about 3,362 (253)

A binary-related origin mediated by environmental conditions for blue straggler stars [PDF]

Nature Communications
Blue stragglers are anomalously massive core hydrogen-burning stars that, according to the theory of single star evolution, should not exist. They are suspected to form in mass-enhancement processes, involving binary evolution or stellar collisions.
Francesco R. Ferraro, Barbara Lanzoni, Enrico Vesperini, Emanuele Dalessandro, Mario Cadelano, Cristina Pallanca, Giacomo Beccari, Domenico Nardiello, Mattia Libralato, Giampaolo Piotto   +9 more
doaj   +4 more sources

Blue straggler stars in dwarf spheroidal galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
Blue straggler star (BSS) candidates have been observed in all old dwarf spheroidal galaxies (dSphs), however whether or not they are authentic BSSs or young stars has been a point of debate.
Aparicio, Bailyn, Battaglia, Beers, Bellazzini, Benz, Benz, Bonanos, Carney, Carney, Carrera, Chabrier, Davies, Davies, E. Ripamonti, E. Tolstoy, Ferraro, Ferraro, Ferraro, Ferraro, Ferraro, Freeman, Freitag, Fusi Pecci, G. Battaglia, Girardi, Harbeck, Hernandez, Hurley, Hurley, Hurley-Keller, Ideta, Irwin, Irwin, Irwin, Irwin, Irwin, Kleyna, Kleyna, Landolt, Lanzoni, Lanzoni, Lee, Leonard, Lombardi, M. J. Irwin, M. Mapelli, Mapelli, Mapelli, Mateo, Mateo, Mateo, Mayer, McCrea, McMahon, Momany, Monkiewicz, Monkman, Naylor, Piatek, Pols, S. Sigurdsson, Sabbi, Sandage, Sigurdsson, Sigurdsson, Sills, Sills, Sills, Ségall, Tian, Tolstoy, Walker, Warren, Wilkinson, Zaggia, Zinnecker   +76 more
core   +10 more sources

The First Detection of Blue Straggler Stars in the Milky Way Bulge [PDF]

The Astrophysical Journal, 2011
We report the first detections of Blue Straggler Stars (BSS) in the bulge of the Milky Way galaxy. Proper motions from extensive space-based observations along a single sight-line allow us to separate a sufficiently clean and well-characterized bulge ...
Albrow, Alvio Renzini, Andronov, Aparicio, Brown, Brown, Bureau, Carney, Carrera, Clarkson, Combes, Dante Minniti, Davies, Ferraro, Freeman, Gilliland, Howard E. Bond, Jay Anderson, Kailash C. Sahu, Kroupa, Kuijken, Lanzoni, Latham, Livio, Manuela Zoccali, Mario Livio, Mateo, Mateo, McCrea, McWilliam, McWilliam, Nataf, Nataf, Perets, Piotto, Preston, R. Michael Rich, T. Ed. Smith, Thomas M. Brown, van der Marel, W. I. Clarkson   +40 more
core   +14 more sources

Blue Straggler Stars: The Spectacular Population in M80 [PDF]

The Astrophysical Journal, 1999
Using HST-WFPC2 observations in two ultraviolet (UV) filters (F225W and F336W) of the central region of the high density Galactic Globular cluster (GGC) M80 we have identified 305 Blue Straggler Stars (BSS) which represents the largest and most ...
Barbara Paltrinieri, Ben Dorman, Brocato E., Buonanno R., Ferraro F. R., Ferraro F. R., Francesco R. Ferraro, Hills J. G., Montegriffo P., Robert T. Rood   +9 more
core   +5 more sources

First Evidence of Circumstellar Disks around Blue Straggler Stars [PDF]

The Astrophysical Journal, 2004
We present an analysis of optical HST/STIS and HST/FOS spectroscopy of 6 blue stragglers found in the globular clusters M3, NGC6752 and NGC6397. These stars are a subsample of a set of ~50 blue stragglers and stars above the main sequence turn-off in ...
Bessell M. S., David Zurek, Hills J. G., John A. Ouellette, Michael M. Shara, Orsola De Marco, Thierry Lanz, Thorval S.   +7 more
core   +4 more sources

Fast rotating blue stragglers prefer loose clusters [PDF]

Nature Communications, 2023
Blue stragglers are anomalously luminous core hydrogen-burning stars formed through mass-transfer in binary/triple systems and stellar collisions. Their physical and evolutionary properties are largely unknown and unconstrained.
Francesco R. Ferraro, Alessio Mucciarelli, Barbara Lanzoni, Cristina Pallanca, Mario Cadelano, Alex Billi, Alison Sills, Enrico Vesperini, Emanuele Dalessandro, Giacomo Beccari, Lorenzo Monaco, Mario Mateo   +11 more
doaj   +2 more sources

Fast-rotating blue straggler stars in the globular cluster NGC 1851 [PDF]

Astronomy & Astrophysics
We studied the rotational velocities of a sample of blue straggler stars (BSSs) and reference stars belonging to the Galactic globular cluster NGC 1851 using high-resolution spectra acquired with FLAMES-GIRAFFE at the ESO/VLT. After field decontamination
Billi A., Monaco L., Ferraro F. R., Mucciarelli A., Lanzoni B., Cadelano M., Trangolao I.   +6 more
doaj   +2 more sources

Blue Straggler Stars in Globular Clusters: a powerful tool to probe the internal dynamical evolution of stellar systems [PDF]

, 2014
This chapter presents an overview of the main observational results obtained to date about Blue Straggler Stars (BSSs) in Galactic Globular Clusters (GCs).
A. Dotter, A. Marín-Franch, A. Moretti, A. Mucciarelli, A. P. Milone, A. Pietrinferni, A. R. Sandage, A. Renzini, A. Sarajedini, A. Sarajedini, A. Sills, A. Sills, A. Sollima, B. Lanzoni, B. Lanzoni, B. Lanzoni, B. Lanzoni, B. Lanzoni, B. Tian, C. D. Bailyn, C. Knigge, D. C. Heggie, D. E. McLaughlin, D. Quievy, E. Carretta, E. Dalessandro, E. Dalessandro, E. Dalessandro, E. Sabbi, F. Fusi Pecci, F. Paresce, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, F. R. Ferraro, G. Beccari, G. Beccari, G. Fiorentino, G. Meylan, G. Piotto, J. Anderson, J. C. Lombardi Jr, J. G. Hills, K. Jordi, L. Lovisi, L. Lovisi, L. Lovisi, L. Lovisi, M. Auriere, M. B. Davies, M. Bolte, M. J. Sarna, M. M. Shara, M. Mapelli, M. Mapelli, M. Mapelli, M. Monelli, N. Leigh, N. Leigh, N. Leigh, O. Marco De, P. Cariulo, P. Guhathakurta, P. J. T. Leonard, R. Buonanno, R. Contreras Ramos, R. D. Mathieu, R. L. Gilliland, R. Zinn, S. Djorgovski, S. Djorgovski, S. Lucatello, S. R. Warren, S. Sigurdsson, W. Benz, W. H. McCrea   +80 more
core   +4 more sources

WIYN Open Cluster Study. XC. Barium Surface Abundances of Blue Straggler Stars in the Open Clusters NGC 7789 and M67 [PDF]

The Astrophysical Journal
We investigate barium (Ba) abundances in blue straggler stars (BSSs) in two open clusters, NGC 7789 (1.6 Gyr) and M67 (4 Gyr), as signatures of asymptotic-giant-branch (AGB) mass transfer.
Andrew C. Nine, Robert D. Mathieu, Simon C. Schuler, Katelyn E. Milliman   +3 more
doaj   +2 more sources

Are Blue Straggler Stars a Hidden Clue? Intriguing Discovery in Pityriasis Rubra Pilaris Under UV-Induced Fluorescence Dermoscopy [PDF]

Dermatology Practical & Conceptual
Divya Madonna Dsouza, Jacintha Martis, Ramesh Bhat M, Michelle Serene Fernandes, Rochelle Cheryl Monteiro, Jyothi Jayaraman   +5 more
doaj   +2 more sources