Zobrazeno 1 - 10
of 208
pro vyhledávání: '"Toomey, Douglas"'
Autor:
Sharma, Saurabh, Ojha, Devendra K., Ghosh, Arpan, Ninan, Joe P., Ghosh, Supriyo, Ghosh, Swarna K., Manoj, P., Naik, Milind B., D'Costa, Savio L. A., Reddy, B. Krishna, Nanjappa, Nandish, Pandey, Rakesh, Sinha, Tirthendu, Panwar, Neelam, Antony, Susmitha, Kaur, Harmeen, Sahu, Sanjit, Bangia, Tarun, Poojary, Satheesha S., Jadhav, Rajesh B., Bhagat, Shailesh B., Meshram, Ganesh S., Shah, Harshit, Rayner, John T., Toomey, Douglas W., Sandimani, Pradeep R.
We present the design and performance of the TANSPEC, a medium-resolution $0.55-2.5~\mu$m cryogenic spectrometer and imager, now in operation at the 3.6-m Devasthal Optical Telescope (DOT), Nainital, India. The TANSPEC provides three modes of operati
Externí odkaz:
http://arxiv.org/abs/2207.07878
Autor:
Chatzis, Nikos, Papazachos, Costas, Theodoulidis, Nikos, Hatzidimitriou, Panagiotis, Vougioukalakis, Georgios, Paulatto, Michele, Heath, Ben, Hooft, Emilie, Toomey, Douglas, Anthymidis, Marios, Ventouzi, Chrisa
Publikováno v:
In Journal of Volcanology and Geothermal Research December 2022 432
Autor:
Chun, Mark, Lai, Olivier, Toomey, Douglas, Lu, Jessica, Service, Max, Baranec, Christoph, Thibault, Simon, Brousseau, Denis, Hayano, Yutaka, Oya, Shin, Santi, Shane, Kingery, Christopher, Loss, Keith, Gardiner, John, Steele, Brad
We present the integration status for `imaka, the ground-layer adaptive optics (GLAO) system on the University of Hawaii 2.2-meter telescope on Maunakea, Hawaii. This wide-field GLAO pathfinder system exploits Maunakea's highly confined ground layer
Externí odkaz:
http://arxiv.org/abs/1608.01804
Autor:
Biller, Beth A., Liu, Michael C., Rice, Ken, Wahhaj, Zahed, Nielsen, Eric, Hayward, Thomas, Kuchner, Marc, Close, Laird M., Chun, Mark, Ftaclas, Christ, Toomey, Douglas W.
We report here the highest resolution near-IR imaging to date of the HD 141569A disc taken as part of the NICI Science Campaign. We recover 4 main features in the NICI images of the HD 141569 disc discovered in previous HST imaging: 1) an inner ring
Externí odkaz:
http://arxiv.org/abs/1504.05224
Autor:
Hayward, Thomas L., Biller, Beth A., Liu, Michael C., Nielsen, Eric L., Wahhaj, Zahed, Chun, Mark, Ftaclas, Christ, Hartung, Markus, Toomey, Douglas W.
We describe the astrometric calibration of the Gemini NICI Planet-Finding Campaign. The Campaign requires a relative astrometric accuracy of $\approx$ 20 mas across multi-year timescales in order to distinguish true companions from background stars b
Externí odkaz:
http://arxiv.org/abs/1411.0641
Autor:
Wahhaj, Zahed, Liu, Michael C., Biller, Beth A., Nielsen, Eric L., Hayward, Thomas L., Kuchner, Marc, Close, Laird M., Chun, Mark, Ftaclas, Christ, Toomey, Douglas W.
Publikováno v:
A&A 567, A34 (2014)
We present J, H, CH_4 short (1.578 micron), CH_4 long (1.652 micron) and K_s-band images of the dust ring around the 10 Myr old star HR 4796 A obtained using the Near Infrared Coronagraphic Imager (NICI) on the Gemini-South 8.1 meter Telescope. Our i
Externí odkaz:
http://arxiv.org/abs/1404.6525
Autor:
Nielsen, Eric L., Liu, Michael C., Wahhaj, Zahed, Biller, Beth A., Hayward, Thomas L., Males, Jared R., Close, Laird M., Morzinski, Katie M., Skemer, Andrew J., Kuchner, Marc J., Rodigas, Timothy J., Hinz, Philip M., Chun, Mark, Ftaclas, Christ, Toomey, Douglas W.
We present new astrometry for the young (12--21 Myr) exoplanet beta Pictoris b taken with the Gemini/NICI and Magellan/MagAO instruments between 2009 and 2012. The high dynamic range of our observations allows us to measure the relative position of b
Externí odkaz:
http://arxiv.org/abs/1403.7195
Autor:
Males, Jared R., Close, Laird M., Morzinski, Katie M., Wahhaj, Zahed, Liu, Michael C., Skemer, Andrew J., Kopon, Derek, Follette, Katherine B., Puglisi, Alfio, Esposito, Simone, Riccardi, Armando, Pinna, Enrico, Xompero, Marco, Briguglio, Runa, Biller, Beth A., Nielsen, Eric L., Hinz, Philip M., Rodigas, Timothy J., Hayward, Thomas L., Chun, Mark, Ftaclas, Christ, Toomey, Douglas W., Wu, Ya-Lin
We present the first ground-based CCD ($\lambda < 1\mu$m) image of an extrasolar planet. Using MagAO's VisAO camera we detected the extrasolar giant planet (EGP) $\beta$ Pictoris b in $Y$-short ($Y_S$, 0.985 $\mu$m), at a separation of $0.470 \pm 0.0
Externí odkaz:
http://arxiv.org/abs/1403.0560
Autor:
Wahhaj, Zahed, Liu, Michael C., Biller, Beth A., Nielsen, Eric L., Close, Laird M., Hayward, Thomas L., Hartung, Markus, Chun, Mark, Ftaclas, Christ, Toomey, Douglas W.
We present the high-contrast image processing techniques used by the Gemini NICI Planet-Finding Campaign to detect faint companions to bright stars. NICI (Near Infrared Coronagraphic Imager) is an adaptive optics instrument installed on the 8-m Gemin
Externí odkaz:
http://arxiv.org/abs/1310.4172
Autor:
Biller, Beth A., Liu, Michael C., Wahhaj, Zahed, Nielsen, Eric L., Hayward, Thomas L., Males, Jared R., Skemer, Andrew, Close, Laird M., Chun, Mark, Ftaclas, Christ, Clarke, Fraser, Thatte, Niranjan, Shkolnik, Evgenya L., Reid, I. Neill, Hartung, Markus, Boss, Alan, Lin, Douglas, Alencar, Silvia H. P., Pino, Elisabete de Gouveia Dal, Gregorio-Hetem, Jane, Toomey, Douglas
We report results of a direct imaging survey for giant planets around 80 members of the Beta Pic, TW Hya, Tucana-Horologium, AB Dor, and Hercules-Lyra moving groups, observed as part of the Gemini NICI Planet-Finding Campaign. For this sample, we obt
Externí odkaz:
http://arxiv.org/abs/1309.1462