Zobrazeno 1 - 10
of 277
pro vyhledávání: '"Hora, Joseph L"'
Autor:
Hora, Joseph L., Trilling, David E., Lopez-Oquendo, Andy J., Smith, Howard A., Mommert, Michael, Moskovitz, Nicholas, Foster, Chris, Connelley, Michael S., Lockhart, Charles, Rayner, John T., Bus, Schelte J., Watanabe, Darryl, Bergknut, Lars, Bonnet, Morgan, Tokunaga, Alan
We describe the new design and current performance of the Mid-InfraRed Spectrometer and Imager (MIRSI) on the NASA Infrared Telescope Facility (IRTF). The system has been converted from a liquid nitrogen/liquid helium cryogen system to one that uses
Externí odkaz:
http://arxiv.org/abs/2409.02752
Autor:
von Fellenberg, Sebastiano D., Witzel, Gunther, Bauboeck, Michi, Chung, Hui-Hsuan, Marchili, Nicola, Martinez, Greg, Sadun-Bordoni, Matteo, Bourdarot, Guillaume, Do, Tuan, Drescher, Antonia, Fazio, Giovanni, Eisenhauer, Frank, Genzel, Reinhard, Gillessen, Stefan, Hora, Joseph L., Mang, Felix, Ott, Thomas, Smith, Howard A., Ros, Eduardo, Ribeiro, Diogo C., Widmann, Felix, Willner, S. P., Zensus, J. Anton
Publikováno v:
A&A 688, L12 (2024)
A systematic study, based on the third-moment structure function, of Sgr A*'s variability finds an exponential rise time $\tau_{1,\rm{obs}}=14.8^{+0.4}_{-1.5}~\mathrm{minutes}$ and decay time $\tau_{2,\rm{obs}}=13.1^{+1.3}_{-1.4}~\mathrm{minutes}$. T
Externí odkaz:
http://arxiv.org/abs/2407.07091
Autor:
Michail, Joseph M., Yusef-Zadeh, Farhad, Wardle, Mark, Kunneriath, Devaky, Hora, Joseph L., Bushouse, Howard, Fazio, Giovanni G., Markoff, Sera, Smith, Howard A.
We report on the final two days of a multiwavelength campaign of Sgr A* observing in the radio, submillimeter, infrared, and X-ray bands in July 2019. Sgr A* was remarkably active, showing multiple flaring events across the electromagnetic spectrum.
Externí odkaz:
http://arxiv.org/abs/2406.01671
Autor:
Lakshmipathaiah, K., Vig, S., Ashby, Matthew L. N., Hora, Joseph L., Kang, Miju, Gorthi, Rama Krishna Sai S.
We apply machine learning algorithms to classify Infrared (IR)-selected targets for NASA's upcoming SPHEREx mission. In particular, we are interested in classifying Young Stellar Objects (YSOs), which are essential for understanding the star formatio
Externí odkaz:
http://arxiv.org/abs/2309.12957
OB associations are home to newly formed massive stars, whose turbulent winds and ionizing flux create H II regions rich with star formation. Studying the distribution and abundance of young stellar objects (YSOs) in these ionized bubbles can provide
Externí odkaz:
http://arxiv.org/abs/2110.03559
Autor:
Pokhrel, Riwaj, Gutermuth, Robert A., Krumholz, Mark R., Federrath, Christoph, Heyer, Mark, Khullar, Shivan, Megeath, S. Thomas, Myers, Philip C., Offner, Stella S. R., Pipher, Judith L., Fischer, William J., Henning, Thomas, Hora, Joseph L.
One of the most important and well-established empirical results in astronomy is the Kennicutt-Schmidt (KS) relation between the density of interstellar gas and the rate at which that gas forms stars. A tight correlation between these quantities has
Externí odkaz:
http://arxiv.org/abs/2104.04551
Autor:
Krick, Jessica E., Lowrance, Patrick, Carey, Sean, Laine, Seppo, Grillmair, Carl, Van Dyk, Schuyler D., Glaccum, William J., Ingalls, James G., Rieke, George, Hora, Joseph L., Fazio, Giovanni G., Gordon, Karl D., Bohlin, Ralph C.
We present infrared photometry of all 36 potential JWST calibrators for which there is archival Spitzer IRAC data. This photometry can then be used to inform stellar models necessary to provide absolute calibration for all JWST instruments. We descri
Externí odkaz:
http://arxiv.org/abs/2102.02319
Autor:
Pokhrel, Riwaj, Gutermuth, Robert A., Betti, Sarah K., Offner, Stella S. R., Myers, Philip C., Megeath, S. Thomas, Sokol, Alyssa D., Ali, Babar, Allen, Lori, Allen, Tom S., Dunham, Michael M., Fischer, William J., Henning, Thomas, Heyer, Mark, Hora, Joseph L., Pipher, Judith L., Tobin, John J., Wolk, Scott J.
We explore the relation between the stellar mass surface density and the mass surface density of molecular hydrogen gas in twelve nearby molecular clouds that are located at $<$1.5 kpc distance. The sample clouds span an order of magnitude range in m
Externí odkaz:
http://arxiv.org/abs/2005.05466
Autor:
Li, Shanghuo, Zhang, Qizhou, Liu, Hauyu Baobab, Beuther, Henrik, Palau, Aina, Girart, Josep Miquel., Smith, Howard, Hora, Joseph L., Lin, Yuxing, Qiu, Keping, Strom, Shaye, Wang, Junzhi, Li, Fei, Yue, Nannan
We present Atacama Large Millimeter/submillimeter Array (ALMA) and Karl G. Jansky Very Large Array (JVLA) observations of the massive infrared dark cloud NGC 6334S (also known as IRDC G350.56+0.44), located at the southwestern end of the NGC 6334 mol
Externí odkaz:
http://arxiv.org/abs/2003.13534
Autor:
Pari, Jyothish, Hora, Joseph L.
Publikováno v:
PASP, 2020, 132:054301
The field of computer vision has greatly matured in the past decade, and many of the methods and techniques can be useful for astronomical applications. One example is in searching large imaging surveys for objects of interest, especially when it is
Externí odkaz:
http://arxiv.org/abs/2003.01122