Results 131 to 140 of about 6,760,588 (269)

Commissioning an Inexpensive Off‐The‐Shelf Spectrograph for Radial‐Velocity Studies

Astronomische Nachrichten, EarlyView.
ABSTRACT We present a way to set up an inexpensive out of the shelf spectrograph at a local observatory. Stability and resolution of the spectrograph are high enough for radial velocity determination of binary stars or determination of stellar characteristics. Even some exoplanets might be detectable via the radial velocity method.
Lukas Stock, Andreas Schrimpf
wiley   +1 more source

A complex structure of escaping helium spanning more than half the orbit of the ultra-hot Jupiter WASP-121 b. [PDF]

Nat Commun
Allart R, Coulombe LP, Carteret Y, Splinter J, Dang L, Bourrier V, Lafrenière D, Albert L, Artigau É, Benneke B, Cowan NB, Doyon R, Krishnamurthy V, Jayawardhana R, Johnstone D, Langeveld AB, Meyer MR, Pelletier S, Piaulet-Ghorayeb C, Radica M, Taylor J, Turner JD.   +21 more
europepmc   +1 more source

Scalable, asynchronous, distributed eigen monitoring of astronomy data streams

Statistical analysis and data mining, 2011
Kanishka Bhaduri, K. Das, K. Borne, C. Giannella, Tushar Mahule, H. Kargupta   +5 more
semanticscholar   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Massive extended streamers feed high-mass young stars. [PDF]

Sci Adv
Olguin FA, Sanhueza P, Ginsburg A, Chen HV, Tanaka KEI, Lu X, Morii K, Nakamura F, Li S, Cheng Y, Zhang Q, Luo Q, Oya Y, Sakai T, Saito M, Guzmán AE.   +15 more
europepmc   +1 more source

Reduction and Solid Electrolyte Interphase Formation Mechanism of Prop‐1‐ene‐1,3‐Sultone

Batteries &Supercaps, EarlyView.
Layer‐forming additives stabilize Li‐ion cells, yet their mechanisms remain unclear. Using operando attenuated total reflection fourier‐transform infrared spectroscopy, online electrochemical mass spectrometry, electrochemical quartz crystal microbalance with dissipation monitoring, electrochemical impedance spectroscopy, and ex situ X‐ray ...
Tim Melin, Laura King, Maria Hahlin, Erik J. Berg   +3 more
wiley   +1 more source

Dynamical dark energy in light of the DESI DR2 baryonic acoustic oscillations measurements. [PDF]

Nat Astron
Gu G, Wang X, Wang Y, Zhao GB, Pogosian L, Koyama K, Peacock JA, Cai Z, Cervantes-Cota JL, Ishak M, Shafieloo A, Zhao R, Ahlen S, Bianchi D, Brooks D, Claybaugh T, Cole S, de la Macorra A, de Mattia A, Doel P, Ferraro S, Forero-Romero JE, Gaztañaga E, Gontcho A Gontcho S, Gutierrez G, Hahn C, Howlett C, Kehoe R, Kirkby D, Kneib JP, Kremin A, Lahav O, Landriau M, Le Guillou L, Leauthaud A, Levi M, Manera M, Meisner A, Miquel R, Moustakas J, Muñoz-Gutiérrez A, Nadathur S, Newman JA, Palanque-Delabrouille N, Percival W, Prada F, Pérez-Ràfol I, Rossi G, Samushia L, Sanchez E, Schlegel D, Seo HJ, Sprayberry D, Tarlé G, Walther M, Weaver BA, Zarrouk P, Zhao C, Zhou R, Zou H.   +59 more
europepmc   +1 more source

Early evolutionary history of the seed

Biological Reviews, EarlyView.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman, Alan R. T. Spencer, Jason Hilton   +2 more
wiley   +1 more source

Evidence for Alfvén waves powering auroral arc via a static electric potential drop. [PDF]

Nat Commun
Tian S, Yao Z, Wygant JR, Lysak RL, Bortnik J, Lyons LR, Liang J, Shi R, Ferradas CP, Shen Y, Reeves GD.   +10 more
europepmc   +1 more source

Quantification of Palmar and Digital Epidermal Thickness and Sweat Duct Density

Clinical Anatomy, EarlyView.
ABSTRACT Palmar digital skin, with its high density of epidermal sweat glands and unique stratum corneum, derives its autonomic innervation from peripheral nerves. Understanding the changes to these structures could serve as objective proxy markers following peripheral nerve injury and interventions to promote regeneration.
Elizabeth Jones, Hanaa N. Mughal, Roxana Moscalu, Malachy Columb, Christopher Duff, Mark Dickinson, Adam J. Reid, Ralph N. A. Murphy   +7 more
wiley   +1 more source