Results 41 to 50 of about 200,926 (234)

Cleaning sky survey databases using Hough Transform and Renewal String approaches [PDF]

, 2003
Large astronomical databases obtained from sky surveys such as the SuperCOSMOS Sky Survey (SSS) invariably suffer from spurious records coming from artefactual effects of the telescope, satellites and junk objects in orbit around earth and physical ...
A. J. Storkey, Ballard, Banday, Bengio, Bock, Brown, C. K. I. Williams, Castillo, Cheselka, Fischler, Hambly, Hambly, Hambly, Hastie, Kiryati, Kiryati, N. C. Hambly, Oppenheimer, Otterpohl, Paciesas, Pearl, R. G. Mann, Rabiner, Storkey, Vandame   +24 more
core   +2 more sources

Premerger Sky Localization of Gravitational Waves from Binary Neutron Star Mergers Using Deep Learning

The Astrophysical Journal, 2023
The simultaneous observation of gravitational waves (GW) and prompt electromagnetic counterparts from the merger of two neutron stars can help reveal the properties of extreme matter and gravity during and immediately after the final plunge.
Chayan Chatterjee, Linqing Wen
doaj   +1 more source

Automated Scheduling of Doppler Exoplanet Observations at Keck Observatory

The Astronomical Journal
Precise Doppler studies of extrasolar planets require fine-grained control of observational cadence, i.e., the timing of and spacing between observations.
Luke B. Handley, Erik A. Petigura, Velibor V. Mišić, Jack Lubin, Howard Isaacson   +4 more
doaj   +1 more source

DESI Spectroscopy of HETDEX Emission-line Candidates. I. Line Discrimination Validation

The Astrophysical Journal
The Hobby–Eberly Dark Energy Experiment (HETDEX) is an untargeted spectroscopic galaxy survey that uses Ly α- emitting galaxies (LAEs) as tracers of 1.9 < z < 3.5 large-scale structure. Most detections consist of a single emission line, whose identity is
Martin Landriau, Erin Mentuch Cooper, Dustin Davis, Karl Gebhardt, Robin Ciardullo, Éric Armengaud, Arjun Dey, Anand Raichoor, David J. Schlegel, Michael Wilson, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, T. Claybaugh, A. de la Macorra, S. Ferraro, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, C. Hahn, K. Honscheid, C. Howlett, M. Ishak, S. Juneau, R. Kehoe, T. Kisner, Anthony Kremin, L. Le Guillou, Michael E. Levi, M. Manera, A. Meisner, R. Miquel, J. Moustakas, S. Nadathur, I. Pérez-Ràfols, C. Poppett, F. Prada, G. Rossi, E. Sanchez, M. Schubnell, D. Sprayberry, G. Tarlé, B. A. Weaver, R. Zhou, H. Zou, Daniel J. Farrow, Gary J. Hill, Donghui Jeong, Chenxu Liu, Shun Saito, Donald P. Schneider   +52 more
doaj   +1 more source

The VLA Low-frequency Sky Survey

, 2007
The Very Large Array (VLA) Low-frequency Sky Survey (VLSS) has imaged 95% of the 3*pi sr of sky north of declination = -30 degrees at a frequency of 74 MHz (4 meter wavelength). The resolution is 80" (FWHM) throughout, and the typical RMS noise level is ~
A. S. Cohen, Baars J. W. M., Cornwell T. J., Hales S. E. G., J. J. Condon, Kuhr H., N. E. Kassim, R. A. Perley, Rees N., Slee O. B., Slee O. B., Slee O. B., T. J. W. Lazio, W. C. Erickson, W. D. Cotton, W. M. Lane, Wall J. V.   +16 more
core   +1 more source

RVSNUpy: A Python Package for Spectroscopic Redshift Measurement Based on Cross Correlation

The Astronomical Journal
We introduce RVSNUpy , a new Python package designed to measure spectroscopic redshifts. Based on inverse-variance-weighted cross correlation, RVSNUpy determines redshifts by comparing observed spectra with various rest-frame template spectra.
Taewan Kim, Jubee Sohn, Ho Seong Hwang
doaj   +1 more source

Understanding Better (Some) Astronomical Data Using Bayesian Methods [PDF]

, 2012
Largely based on an invited talk at ISI 2011 - 58th World Statistics Congress, Dublin. To appear as chapter 2 of the upcoming "Astrostatistical Challenges for the New Astronomy" book (ed. J.
openaire   +2 more sources

On a Method of reproducing Astronomical Photographs [PDF]

Nature, 1897
PROF. MAX WOLF, in his excellent article on the “Reflector and Portrait Lens in Celestial Photography,” published in your issue of April 22 last, mentions a method of “reproducing nebulous masses” from original negatives, and refers to my reproduction of a photograph of the nebula M. 8, done in collaboration with Mr. Lunt.
openaire   +1 more source

UVCANDELS: Catalogs of Photometric Redshifts and Galaxy Physical Properties

The Astrophysical Journal Supplement Series
The UltraViolet imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey Fields (UVCANDELS) program provides deep Hubble Space Telescope (HST) F275W and F435W imaging over four CANDELS fields (GOODS-N, GOODS-S, COSMOS, and Extended ...
Vihang Mehta, Marc Rafelski, Ben Sunnquist, Harry I. Teplitz, Claudia Scarlata, Xin Wang, Adriano Fontana, Nimish P. Hathi, Kartheik G. Iyer, Anahita Alavi, James Colbert, Norman Grogin, Anton Koekemoer, Kalina V. Nedkova, Matthew Hayes, Laura Prichard, Brian Siana, Brent M. Smith, Rogier Windhorst, Teresa Ashcraft, Micaela Bagley, Ivano Baronchelli, Guillermo Barro, Alex Blanche, Adam Broussard, Timothy Carleton, Nima Chartab, Alex Codoreanu, Seth Cohen, Christopher Conselice, Y. Sophia Dai, Behnam Darvish, Romeel Davé, Laura DeGroot, Duilia De Mello, Mark Dickinson, Najmeh Emami, Henry Ferguson, Leonardo Ferreira, Keely Finkelstein, Steven Finkelstein, Jonathan P. Gardner, Eric Gawiser, Timothy Gburek, Mauro Giavalisco, Andrea Grazian, Caryl Gronwall, Yicheng Guo, Pablo Arrabal Haro, Shoubaneh Hemmati, Justin Howell, Rolf A. Jansen, Zhiyuan Ji, Sugata Kaviraj, Keunho J. Kim, Peter Kurczynski, Ilin Lazar, Ray A. Lucas, John MacKenty, Kameswara Bharadwaj Mantha, Alec Martin, Garreth Martin, Tyler McCabe, Bahram Mobasher, Alexa M. Morales, Robert O’Connell, Charlotte Olsen, Lillian Otteson, Swara Ravindranath, Caleb Redshaw, Michael Rutkowski, Brant Robertson, Zahra Sattari, Emmaris Soto, Lei Sun, Sina Taamoli, Eros Vanzella, L. Y. Aaron Yung, Bonnabelle Zabelle, The UVCANDELS Team   +79 more
doaj   +1 more source

In-flight calibration of the Herschel-SPIRE instrument [PDF]

, 2010
SPIRE, the Spectral and Photometric Imaging REceiver, is the Herschel Space Observatory's submillimetre camera and spectrometer. It contains a three-band imaging photometer operating at 250, 350 and 500 μm, and an imaging Fourier-transform spectrometer (
Levenson, L., Lu, N., Schulz, B., Schwartz, A., Shupe, D., Swinyard, B. M., Xu, C. K., Zhang, L.   +7 more
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