Results 1 to 10 of about 3,207 (171)

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   +11 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: Early Observations that Failed to Solve the Problem [PDF]

, 2014
In this chapter, I describe early ideas on blue stragglers, and various observations (some published, some not) that promised but failed to resolve the question of their origin.
A. Miglio, A. R. Sandage, A. R. Sandage, A. R. Sandage, A. Sarajedini, B. Margon, B. Niss, C. A. Murray, C. D. Bailyn, D. C. Morton, D. Pooley, E. M. Burbidge, F. Fusi Pecci, F. Hoyle, F. Paresce, F. R. Ferraro, G. Meynet, G. W. Preston, H. C. Arp, H. C. Arp, H. C. Arp, H. E. Bond, H. E. Bond, H. L. Johnson, H. Spinrad, I. Iben, J. A. Ahumada, J. A. Crawford, J. C. Wheeler, J. Smak, K. A. Montgomery, K. C. Freeman, K. M. Cudworth, L. L. Stryker, M. Livio, N. G. Roman, O. J. Eggen, O. J. Eggen, O. J. Eggen, O. J. Eggen, P. Guhathakurta, P. Hut, P. J. T. Leonard, P. Pesch, R. D. Cannon, R. D. Cannon, R. D. Cannon, R. D. Cannon, R. N. Manchester, R. P. Kraft, R.E. Cohen, T. A. Smecker-Hane, T. D. Kinman, V. Trimble, V. Trimble, W Hiltner, W. H. McCrea, W.L. W. Sargent, Y. Xin, Z. Kopal   +59 more
core   +6 more sources

Census of Blue Straggler Stars in Distant Open Clusters and Maximum Fractional Mass Excess of Open Cluster Blue Straggler Stars

The Astronomical Journal
We identified blue straggler stars (BSSs) in 53 open clusters utilizing data from Gaia DR3. Most of these clusters are situated in the outer regions of the Galactic disk, encompassing structures such as the warp and the Outer arm.
Qian Cui, Zhihong He, Shunhong Deng, Liming Peng, Chunyan Li, Yangping Luo, Kun Wang   +6 more
doaj   +3 more sources

Characterization of Blue and Yellow Straggler Stars of Berkeley 39

The Astronomical Journal
We characterize blue straggler stars (BSSs) and yellow straggler stars (YSSs) of the open cluster (OC) Berkeley 39 using multiwavelength observations including the Swift/Ultraviolet and Optical Telescope (UVOT). Our analysis also makes use of ultraviolet
Komal Chand, Khushboo K. Rao, Kaushar Vaidya, Anju Panthi   +3 more
doaj   +3 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   +7 more sources

Spectroscopy of Blue Stragglers and Turnoff Stars in M67 (NGC 2682) [PDF]

The Astronomical Journal, 2000
We have analyzed high-resolution spectra of relatively cool blue stragglers and main sequence turnoff stars in the old open cluster M67 (NGC 2682).
Ahumada J., Andrievsky S. M., Anupama G. C., Belloni T., Chevalier C., Edvardsson B., Eric L. Sandquist, Faraggiana R., Goranskij V. P., Gratton R. G., Harlow J. J. B., Mathys G., Matthew D. Shetrone, Murray C. A., Murray C. A., Perryman M. A. C., Sanders W. L., Sanders W. L., Sarna M. J., Talon S., van den Berg M., Varenne O., Zhao J. L.   +22 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

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   +3 more sources

On the Origin of the Split Main Sequences of the Young Massive Cluster NGC 1856

The Astrophysical Journal, 2023
The detection of split main sequences (MSs) associated with young clusters (≲600 Myr) has attracted a lot of attention. A prevailing scenario is that a bimodality of stellar rotation distribution drives the bifurcation of the MS. Nevertheless, the origin
Li Wang, Chengyuan Li, Long Wang, Chenyu He, Chen Wang   +4 more
doaj   +1 more source