Results 11 to 20 of about 86,451 (281)

VVV-WIT-12 and Its Fashionable Nebula: A 4 yr Long-period Young Stellar Object with a Light Echo?

The Astrophysical Journal Letters, 2023
We report the serendipitous discovery of VVV-WIT-12, an unusual variable source that seems to induce variability in its surrounding nebula. The source belongs to the rare objects that we call WITs (short for What Is This?) discovered within the VISTA ...
Roberto K. Saito, Bringfried Stecklum, Dante Minniti, Philip W. Lucas, Zhen Guo, Leigh C. Smith, Luciano Fraga, Felipe Navarete, Juan Carlos Beamín, Calum Morris   +9 more
doaj   +1 more source

EVOLUTION OF THE CRAB NEBULA RADIO EMISSION

Odessa Astronomical Publications, 2017
In 1977-1992 the flux density of the Crab Nebula in respect to Orion Nebula was measured at the frequency of 927 MHz with the same 10-m radio telescope.
E. N. Vinyajkin
doaj   +1 more source

A Spatially Resolved X-Ray Polarization Map of the Vela Pulsar Wind Nebula

The Astrophysical Journal Letters, 2023
In this paper, we present a full spatially resolved polarization map for the Vela pulsar wind nebula (PWN) observed by IXPE. By employing effective background discrimination techniques, our results show a remarkably high degree of local polarization in ...
Kuan Liu, Fei Xie, Yi-han Liu, Chi-Yung Ng, Niccolò Bucciantini, Roger W. Romani, Martin C. Weisskopf, Enrico Costa, Alessandro Di Marco, Fabio La Monaca, Fabio Muleri, Paolo Soffitta, Wei Deng, Yu Meng, En-wei Liang   +14 more
doaj   +1 more source

Which Stars are Ionizing the Orion Nebula ? [PDF]

, 2017
The common assumption that Theta-1-Ori C is the dominant ionizing source for the Orion Nebula is critically examined. This assumption underlies much of the existing analysis of the nebula.
Ferland, G. J., Kollatschny, W., O'Dell, C. R.   +2 more
core   +3 more sources

NILAI-NILAI EDUKATIF DALAM NOVEL SELENA DAN NEBULA KARYA TERE LIYE

BASINDO: Jurnal Kajian Bahasa, Sastra Indonesia, dan Pembelajarannya, 2022
ABSTRAK: Novel merupakan salah satu karya sastra yang di dalamnya terdapat nilai edukatif sebagai unsur ekstrinsik. Artikel ini menggunakan metode deskriptif kualitatif yang fokus menganalisis nilai edukatif pada novel Selena dan Nebula karya Tere Liye ...
Ananda Pramesti Regitha Cahyani
doaj   +1 more source

Discovery of an X-Ray Photoionized Optical Nebula and a Radio Nebula Associated with the ULX NGC 4861 X-1

The Astrophysical Journal, 2023
We have conducted long-slit spectroscopic observations and analyzed archival radio data for the ultraluminous X-ray source (ULX) NGC 4861 X-1. Our spectral line analysis unveils NGC 4861 X-1 as the fourth ULX situated within an X-ray photoionized nebula,
Hang Gong, Ryan Urquhart, Alexandr Vinokurov, Yu Bai, Antonio Cabrera-Lavers, Sergei Fabrika, Liang Wang, Jifeng Liu   +7 more
doaj   +1 more source

Digital Assistant for Arrival Scheduling with Conflict Prevention Capabilities

Information, 2023
Nowadays, in view of the growing traffic volume, an appropriate aircraft sequencing in the arrival sector is needed to maintain safety levels and improve the performance of the runway system and flight times.
Francesco Nebula, Roberto Palumbo, Gabriella Gigante, Angela Vozella   +3 more
doaj   +1 more source

The composition of the protosolar disk and the formation conditions for comets [PDF]

, 2015
Conditions in the protosolar nebula have left their mark in the composition of cometary volatiles, thought to be some of the most pristine material in the solar system.
A. Dutrey, A. Kouchi, A.E. Glassgold, A.G.G.M. Tielens, A.I. Vasyunin, A.L. Cochran, A.N. Heays, A.Z. Dolginov, B. Silvi, B.P. Bonev, B.P. Bonev, B.P. Bonev, C. Alexander, C. Ceccarelli, C. Ceccarelli, C. Ceccarelli, C. Dominik, C. Qi, C. Qi, C. Qi, C. Qi, C. Salyk, C. Tornow, C. Tornow, C. Tornow, C. Walsh, C. Walsh, C.E. Woodward, C.P. Dullemond, D. Bockelée-Morvan, D. Bockelée-Morvan, D. Bockelée-Morvan, D. Bockelée-Morvan, D. Bockelée-Morvan, D. Gautier, D. Harsono, D. Heinzeller, D. Hutsemékers, D. Kozlowski, D. Semenov, D. Semenov, D.C. Lis, E. Gibb, E. Herbst, E. Jehin, E. Lellouch, E. Roueff, E. S. Wirström, E. Zicler, E.D. Young, E.K. Jessberger, E.L. Gibb, E.S. Wirström, E.S. Wirström, F. Hersant, F. Pauzat, F.C. Adams, F.J. Ciesla, F.J. Ciesla, G. Buntkowsky, G. Bussolin, G. Cremonese, G. Kresse, G. Kresse, G. Notesco, G.J. Flynn, G.J. Villanueva, G.L. Villanueva, G.S. Mathews, H. Kawakita, H. Kawakita, H. Kawakita, H. Kawakita, H. Yurimoto, H. Yurimoto, I. Gregorio-Monsalvo de, I. Pater de, I. Pater de, J. Crovisier, J. Crovisier, J. Crovisier, J. Crovisier, J. Crovisier, J. Schönke, J.-E. Lee, J.C. Mottram, J.E. Heidenreich III, J.F. Hawley, J.F. Hawley, J.I. Lunine, J.J. Kavelaars, J.K.J. Fogel, J.P. Perdew, J.R. Lyons, J.R. Najita, J.S. Carr, J.S. Lewis, J.S. Mathis, K. Altwegg, K. France, K. Hashimoto, K. Nagashima, K. Saigo, K. Willacy, K. Willacy, K. Willacy, K. Willacy, K. Willacy, K. Willacy, K.D. McKeegan, K.I. Öberg, K.M. Chick, K.M. Pontoppidan, K.M. Pontoppidan, K.M. Pontoppidan, K.M. Pontoppidan, K.Y. Furuya, L. Pagani, L. Paganini, L. Podio, L.I. Cleeves, L.I. Cleeves, L.I. Cleeves, L.R. Nittler, M. Ali-Dib, M. Ali-Dib, M. Asplund, M. Calatayud, M. Doronin, M. Hassig, M. Ilgner, M. Ilgner, M. Ilgner, M. Pettini, M.A. DiSanti, M.F. A’Hearn, M.J. Mumma, M.J. Mumma, M.J. Mumma, M.R. Hogerheijde, M.V. Persson, N. Biver, N. Dello Russo, N. Dello Russo, N. Dello Russo, N. Fray, N. Iro, N. Watanabe, N.J. Turner, N.J. Turner, N.J. Turner, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, O. Mousis, P. Caselli, P. D’Alessio, P. Eberhardt, P. Eberhardt, P. Gast, P. Hartogh, P. Theulé, P.M. Woods, P.M. Woods, R. Hueso, R. Llusar, R. Meier, R. Meier, R. Visser, R. Visser, R. Visser, R.N. Clayton, R.N. Clayton, S. B. Charnley, S. Casassa, S. Casassa, S. Grimme, S. Gulkis, S. Inutsuka, S. N. Milam, S. Wyckoff, S.A. Balbus, S.B. Charnley, S.B. Charnley, S.B. Charnley, S.B. Charnley, S.B. Charnley, S.D. Rodgers, S.E. Dodson-Robinson, T. Albertsson, T. Albertsson, T. Albertsson, T. Bredichin, T. Hama, T. Lee, T. Owen, T.J. Millar, Th. Henning, U. Marboeuf, U. Marboeuf, U. Marboeuf, V. Akimkin, V. Taquet, V. Taquet, V. Wakelam, V. Zubko, W.-H. Ip, W.D. Langer, W.M. Irvine, Y. Aikawa, Y. Aikawa, Y. Aikawa, Y. Aikawa, Y. Aikawa, Y. Aikawa, Y. Alibert, Y. Alibert, Y. Ellinger, Y. Ellinger, Y. Shinnaka, Y.L. Radeva   +227 more
core   +3 more sources

M 1–92 Revisited: New Findings and Open Questions: New NOEMA Observations of Minkowski’s Footprint

Galaxies, 2022
PN M 1–92, also known as Minkowski’s Footprint, is a textbook example of a massive pre-planetary nebula. It presents all the characteristics of this type of source: non-spherical symmetry (bipolar cylindrical symmetry in this case), high-velocity gas ...
Javier Alcolea, Marcelino Agúndez, Valentín Bujarrabal, Arancha Castro-Carrizo, Jean-François Desmurs, John-Eduard Martínez-Fernández, Carmen Sánchez Contreras, Miguel Santander-García   +7 more
doaj   +1 more source

Nebula/DSCR1 upregulation delays neurodegeneration and protects against APP-induced axonal transport defects by restoring calcineurin and GSK-3β signaling. [PDF]

PLoS Genetics, 2013
Post-mortem brains from Down syndrome (DS) and Alzheimer's disease (AD) patients show an upregulation of the Down syndrome critical region 1 protein (DSCR1), but its contribution to AD is not known.
Jillian L Shaw, Karen T Chang
doaj   +1 more source