Results 21 to 30 of about 484,937 (232)

Discovery of the Magellanic Stellar Stream Out to 100 kpc

The Astrophysical Journal, 2023
The Magellanic Stream (MS)—an enormous ribbon of gas spanning 140° of the southern sky trailing the Magellanic Clouds—has been exquisitely mapped in the five decades since its discovery.
Vedant Chandra, Rohan P. Naidu, Charlie Conroy, Ana Bonaca, Dennis Zaritsky, Phillip A. Cargile, Nelson Caldwell, Benjamin D. Johnson, Jiwon Jesse Han, Yuan-Sen Ting   +9 more
doaj   +1 more source

Light Curve Analyses of the Eclipsing Binary EROS 1010 in the Large Magellanic Cloud [PDF]

Journal of Astronomy and Space Sciences, 2009
We present BV light curves of EROS 1010 which is located in the central bar of the Large Magellanic Cloud. The BV light curves including BR and I light curves observed by the EROS and OGLE projects, have been analyzed using the 2005 version of the Wilson
Kyeong-Soo Hong, Young-Woon Kang
doaj   +1 more source

Is the Large Magellanic Cloud a Large Microlensing Cloud? [PDF]

The Astrophysical Journal, 2000
An expression is provided for the self-lensing optical depth of the thin LMC disk surrounded by a shroud of stars at larger scale heights. The formula is written in terms of the vertical velocity dispersion of the thin disk population. If tidal forcing causes 1-5 % of the disk mass to have a height larger than 6 kpc and 10-15 % to have a height above 3
E.J.Kerins, N.W.Evans
openaire   +3 more sources

Extinction in the Large Magellanic Cloud [PDF]

The Astrophysical Journal, 2007
We present an extinction map of the Large Magellanic Cloud (LMC), using 204,502 stars from the Two Micron All Sky Survey point source catalog. We first use the NICE method to determine the reddening distribution, \ehk and \ejh, which we compare to the HI distribution to find a near-infrared reddening law of $\ejh/\ehk=1.20\pm 0.04$. A visual extinction
Leo Blitz, Nia Imara
openaire   +3 more sources

CCD imagers for the Transiting Exoplanet Survey Satellite from benchtop to space environment

Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023
Abstract The Transiting Exoplanet Survey Satellite (TESS) is a Massachusetts Institute of Technology‐led NASA Explorer‐class mission planned to spend 2 years discovering transiting exoplanets by an all‐sky survey. The observatory contains four wide field‐of‐view camera systems for a total of 16.8 Megapixel, low‐noise, low‐power CCD detectors.
Vyshnavi Suntharalingam, Ilya Prigozhin, Keith Warner, Douglas Young, Deborah Woods, Gregory Berthiaume   +5 more
wiley   +1 more source

A Census of the Most Luminous Stars. I. The Upper HR Diagram for the Large Magellanic Cloud

The Astronomical Journal, 2023
Spectral classification and multiwavelength photometry for the most luminous stars in the LMC has greatly increased due to several recent surveys for both the hottest and coolest members.
John C. Martin, Roberta M. Humphreys
doaj   +1 more source

LRO‐LAMP Lunar South Pole Cold Traps: Assessment of H2O and Potential CO2 and NH3 Reserves

Journal of Geophysical Research: Planets, Volume 128, Issue 8, August 2023., 2023
Abstract Nighttime Lyman Alpha Mapping Project (LAMP) observations are used to investigate condensed volatiles at the south polar region of the Moon. This study incorporates LAMP data from the first ∼7 years of the mission and Diviner annual maximum temperatures to search for volatile signatures associated with H2O, NH3, and CO2. Other stable potential
L. O. Magaña, K. D. Retherford, B. D. Byron, A. R. Hendrix, C. Grava, K. E. Mandt, U. Raut, E. Czajka, P. O. Hayne, D. M. Hurley, G. R. Gladstone, M. J. Poston, T. K. Greathouse, W. Pryor, J. T. Cahill, A. Stickle   +15 more
wiley   +1 more source

Magellanic Clouds Cepheids: Thorium Abundances [PDF]

Journal of Astronomy and Space Sciences, 2018
The analysis of the high-resolution spectra of 31 Magellanic Clouds Cepheid variables enabled the identification of thorium lines. The abundances of thorium were found with spectrum synthesis method. The calculated thorium abundances exhibit correlations
Yeuncheol Jeong, Alexander V. Yushchenko, Vira F. Gopka, Volodymyr O. Yushchenko, Valery V. Kovtyukh, Svetlana V. Vasil’eva   +5 more
doaj   +1 more source

Observations of the Large Magellanic Cloud withFermi [PDF]

Astronomy and Astrophysics, 2010
Comment: 15 pages, 10 figures, A&A, in ...
A. A. Abdo1, 2, M. Ackermann3, M. Ajello3, W. B. Atwood4, L. Baldini5, J. Ballet6, G. Barbiellini7, 8, D. Bastieri9, 10, B. M. Baughman11, K. Bechtol3, R. Bellazzini5, B. Berenji3, R. D. Blandford3, E. D. Bloom3, BONAMENTE, EMANUELE, 13, A. W. Borgland3, J. Bregeon5, A. Brez5, M. Brigida14, 15, P. Bruel16, T. H. Burnett17, S. Buson10, G. A. Caliandro14, 15, R. A. Cameron3, P. A. Caraveo18, J. M. Casandjian6, CECCHI, Claudia, 13, Ö. Çelik19, 20, 21, A. Chekhtman1, 22, C. C. Cheung19, J. Chiang3, S. Ciprini12, 13, R. Claus3, J. Cohen Tanugi23, L. R. Cominsky24, J. Conrad25, 26, 27, S. Cutini28, C. D. Dermer1, A. de Angelis29, F. de Palma14, 15, S. W. Digel3, E. do Couto e. Silva3, P. S. Drell3, R. Dubois3, D. Dumora30, 31, C. Farnier23, C. Favuzzi14, 15, S. J. Fegan16, W. B. Focke3, P. Fortin16, M. Frailis29, Y. Fukazawa32, P. Fusco14, 15, F. Gargano15, D. Gasparrini28, N. Gehrels19, 33, S. Germani12, 13, G. Giavitto34, B. Giebels16, N. Giglietto14, 15, F. Giordano14, 15, T. Glanzman3, G. Godfrey3, E. V. Gotthelf35, I. A. Grenier6, M. H. Grondin30, 31, J. E. Grove1, L. Guillemot30, 31, S. Guiriec36, Y. Hanabata32, A. K. Harding19, M. Hayashida3, E. Hays19, D. Horan16, R. E. Hughes11, M. S. Jackson25, 26, 37, P. Jean38, G. Jóhannesson3, A. S. Johnson3, R. P. Johnson4, T. J. Johnson19, 33, W. N. Johnson1, T. Kamae3, H. Katagiri32, J. Kataoka39, 40, N. Kawai39, 41, M. Kerr17, J. Knödlseder38, M. L. Kocian3, M. Kuss5, J. Lande3, L. Latronico5, M. Lemoine Goumard30, 31, F. Longo7, 8, F. Loparco14, 15, B. Lott30, 31, M. N. Lovellette1, P. Lubrano12, 13, G. M. Madejski3, A. Makeev1, 22, F. Marshall19, P. Martin42, M. N. Mazziotta15, W. McConville19, 33, J. E. McEnery19, C. Meurer25, 26, P. F. Michelson3, W. Mitthumsiri3, T. Mizuno32, A. A. Moiseev20, 33, C. Monte14, 15, M. E. Monzani3, A. Morselli43, I. V. Moskalenko3, S. Murgia3, P. L. Nolan3, J. P. Norris44, E. Nuss23, T. Ohsugi32, N. Omodei5, E. Orlando42, J. F. Ormes44, D. Paneque3, D. Parent30, 31, V. Pelassa23, M. Pepe12, 13, M. Pesce Rollins5, F. Piron23, T. A. Porter4, S. Rainò14, 15, R. Rando9, 10, M. Razzano5, A. Reimer45, 3, O. Reimer45, 3, T. Reposeur30, 31, S. Ritz4, A. Y. Rodriguez46, R. W. Romani3, M. Roth17, F. Ryde37, 26, H. F. W. Sadrozinski4, D. Sanchez16, A. Sander11, P. M. Saz Parkinson4, J. D. Scargle47, A. Sellerholm25, 26, C. Sgrò5, E. J. Siskind48, D. A. Smith30, 31, P. D. Smith11, G. Spandre5, P. Spinelli14, 15, J. L. Starck6, M. S. Strickman1, TOSTI, Gino, V. Vitale43   +201 more
openaire   +11 more sources

Photometry and astrometry with JWST‐II: NIRCam distortion correction

Astronomische Nachrichten, Volume 344, Issue 3, March 2023., 2023
Abstract In preparation to make the most of our own planned James Webb Space Telescope investigations, we take advantage of publicly available calibration and early‐science observations to independently derive and test a geometric‐distortion solution for NIRCam detectors. Our solution is able to correct the distortion to better than ∼$$ \sim $$0.2 mas.
M. Griggio, D. Nardiello, L. R. Bedin
wiley   +1 more source