Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Ridgway, Stephen T."'
Autor:
Rajagopal, Jayadev K., Lau, Ryan M., Padilla, Isack, Ridgway, Stephen T., Cui, Chaohan, McClinton, Brittany, Sajjad, Aqil, Corder, Stuartt, Rawlings, Mark, Rantakyro, Fredrik, Richardson, J. Gabriel, Ashok, Amit, Guha, Saikat
Microarcsecond resolutions afforded by an optical-NIR array with kilometer-baselines would enable breakthrough science. However significant technology barriers exist in transporting weakly coherent photon states over these distances: primarily photon
Externí odkaz:
http://arxiv.org/abs/2407.06302
Autor:
Fulmer, Leah M., Juneau, Stephanie, Merrill, Catherine, Bolton, Adam S., Nidever, David L., Nikutta, Robert, Ridgway, Stephen T., Olsen, Knut A. G., Weaver, Benjamin A.
The Astro Data Lab is preparing to host large spectroscopic datasets such as a copy of the Dark Energy Spectroscopic Instrument (DESI) survey, which is projected to include approximately 40 million spectra of galaxies and quasars as well as over 10 m
Externí odkaz:
http://arxiv.org/abs/2302.08906
Autor:
Norris, Ryan P., Baron, Fabien R., Monnier, John D., Paladini, Claudia, Anderson, Matthew D., Martinez, Arturo O., Schaefer, Gail H., Che, Xiao, Chiavassa, Andrea, Connelley, Michael S., Farrington, Christopher D., Gies, Douglas R., Kiss, László L., Lester, John B., Montargès, Miguel, Neilson, Hilding R., Majoinen, Olli, Pedretti, Ettore, Ridgway, Stephen T., Roettenbacher, Rachael M., Scott, Nicholas J., Sturmann, Judit, Sturmann, Laszlo, Thureau, Nathalie, Vargas, Norman, Brummelaar, Theo A. ten
We present H-band interferometric observations of the red supergiant (RSG) AZ Cyg made with the Michigan Infra-Red Combiner (MIRC) at the six-telescope Center for High Angular Resolution Astronomy (CHARA) Array. The observations span 5 years (2011-20
Externí odkaz:
http://arxiv.org/abs/2106.15636
Autor:
Anugu, Narsireddy, Brummelaar, Theo ten, Turner, Nils H., Anderson, Matthew D., Bouquin, Jean-Baptiste Le, Sturmann, Judit, Sturmann, Laszlo, Farrington, Chris, Vargas, Norm, Majoinen, Olli, Ireland, Michael J., Monnier, John D., Mourard, Denis, Schaefer, Gail, Gies, Douglas R., Ridgway, Stephen T., Kraus, Stefan, Petit, Cyril, Tallon, Michel, Lim, Caroline B., Berio, Philippe
The CHARA Array is the longest baseline optical interferometer in the world. Operated with natural seeing, it has delivered landmark sub-milliarcsecond results in the areas of stellar imaging, binaries, and stellar diameters. However, to achieve ambi
Externí odkaz:
http://arxiv.org/abs/2012.11667
Autor:
Narayan, Gautham, Zaidi, Tayeb, Soraisam, Monika D., Wang, Zhe, Lochner, Michelle, Matheson, Thomas, Saha, Abhijit, Yang, Shuo, Zhao, Zhenge, Kececioglu, John, Scheidegger, Carlos, Snodgrass, Richard T., Axelrod, Tim, Jenness, Tim, Maier, Robert S., Ridgway, Stephen T., Seaman, Robert L., Evans, Eric Michael, Singh, Navdeep, Taylor, Clark, Toeniskoetter, Jackson, Welch, Eric, Zhu, Songzhe
The unprecedented volume and rate of transient events that will be discovered by the Large Synoptic Survey Telescope (LSST) demands that the astronomical community update its followup paradigm. Alert-brokers -- automated software system to sift throu
Externí odkaz:
http://arxiv.org/abs/1801.07323
Spectroscopy, MOST Photometry, and Interferometry of MWC 314: Is it an LBV or an interacting binary?
Autor:
Richardson, Noel D., Moffat, Anthony F. J., Maltais-Tariant, Raphaël, Pablo, Herbert, Gies, Douglas R., Saio, Hideyuki, St-Louis, Nicole, Schaefer, Gail, Miroshnichenko, Anatoly S., Farrington, Chris, Aldoretta, Emily J., Artigau, Étienne, Boyajian, Tabetha S., Gordon, Kathryn, Jones, Jeremy, Matson, Rachel, McAlister, Harold A., O'Brien, David, Raghavan, Deepak, Ramiaramanantsoa, Tahina, Ridgway, Stephen T., Scott, Nic, Sturmann, Judit, Sturmann, Laszlo, Brummelaar, Theo ten, Thomas, Joshua D., Turner, Nils, Vargas, Norm, Zharikov, Sergey, Matthews, Jaymie, Cameron, Chris, Guenther, David, Kuschnig, Rainer, Rowe, Jason, Rucinski, Slavek, Sasselov, Dimitar, Weiss, Werner
MWC 314 is a bright candidate luminous blue variable that resides in a fairly close binary system, with an orbital period of 60.753$\pm$0.003 d. We observed MWC 314 with a combination of optical spectroscopy, broad-band ground- and space-based photom
Externí odkaz:
http://arxiv.org/abs/1510.00324
Publikováno v:
ApJ 796, 53 (2014)
The discovery of variable and transient sources is an essential product of synoptic surveys. The alert stream will require filtering for personalized criteria -- a process managed by a functionality commonly described as a Broker. In order to underst
Externí odkaz:
http://arxiv.org/abs/1409.3265
Autor:
Montargès, Miguel, Kervella, Pierre, Perrin, Guy, Ohnaka, Keiichi, Chiavassa, Andrea, Ridgway, Stephen T., Lacour, Sylvestre
Publikováno v:
A&A 572, A17 (2014)
Context. Betelgeuse is the closest red supergiant (RSG); therefore, it is well suited for studying the complex processes in its atmosphere that lead to the chemical enrichment of the interstellar medium. Aims. We intend to investigate the shape and c
Externí odkaz:
http://arxiv.org/abs/1408.2994
Autor:
Kervella, Pierre, Montargès, Miguel, Ridgway, Stephen T., Perrin, Guy, Chesneau, Olivier, Lacour, Sylvestre, Chiavassa, Andrea, Haubois, Xavier, Gallenne, Alexandre
Publikováno v:
Astronomy and Astrophysics 564 (2014) A88
As the nearest known AGB star (d=64pc) and one of the brightest (mK-2), L2 Pup is a particularly interesting benchmark object to monitor the final stages of stellar evolution. We report new lucky imaging observations of this star with the VLT/NACO ad
Externí odkaz:
http://arxiv.org/abs/1404.3189
Autor:
Baines, Ellyn K., McAlister, Harold A., Brummelaar, Theo A. ten, Turner, Nils H., Sturmann, Judit, Sturmann, Laszlo, Farrington, Christopher D., Vargas, Norm, van Belle, Gerard T., Ridgway, Stephen T.
We present the fundamental parameters of HR 2582, a high-mass red giant star whose evolutionary state is a mystery. We used the CHARA Array interferometer to directly measure the star's limb-darkened angular diameter (1.006+/-0.020 mas) and combined
Externí odkaz:
http://arxiv.org/abs/1306.1236