Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Żurek, D."'
Autor:
Graur, O., Gonzalez, E. Padilla, Burke, J., Deckers, M., Jha, S. W., Galbany, L., Karamenhmetoglu, E., Stritzinger, M. D., Maguire, K., Howell, D. A., Fisher, R., Fullard, A. G., Handberg, R., Hiramatsu, D., Hosseinzadeh, G., Kerzendorf, W. E., McCully, C., Newsome, M., Pellegrino, C., Rest, A., Riess, A. G., Seitenzahl, I. R., Shara, M. M., Shen, K. J., Terreran, G., Zurek, D. R.
Near-infrared (NIR) observations of normal Type Ia supernovae (SNe Ia) obtained between 150 to 500 d past maximum light reveal the existence of an extended plateau. Here, we present observations of the underluminous, 1991bg-like SN 2021qvv. Early, gr
Externí odkaz:
http://arxiv.org/abs/2306.12858
Neuroevolution is one of the methodologies that can be used for learning optimal architecture during training. It uses evolutionary algorithms to generate the topology of artificial neural networks and its parameters. The main benefits are that it is
Externí odkaz:
http://arxiv.org/abs/2112.05640
We report on multi-wavelength observations during quiescence and of the first detected outburst of the ~60 min orbital period AM CVn SDSS J113732+405458. Using X-ray and UV observations we determined an upper limit duration of the event of about one
Externí odkaz:
http://arxiv.org/abs/2012.10356
Autor:
Leigh, N. W. C., Panurach, T., Simunovic, M., Geller, A. M., Zurek, D., Shara, M. M., Sills, A., Knigge, C., Gosnell, N. M., Mathieu, R., Puzia, T. H., Ventura, J., Minor, Q.
For a sample of 38 Galactic globular clusters (GCs), we confront the observed distributions of blue straggler (BS) proper motions and masses (derived from isochrone fitting) from the BS catalog of Simunovic & Puzia with theoretical predictions for ea
Externí odkaz:
http://arxiv.org/abs/1810.01895
Autor:
Tudor, V., Miller-Jones, J. C. A., Knigge, C., Maccarone, T. J., Tauris, T. M., Bahramian, A., Chomiuk, L., Heinke, C. O., Sivakoff, G. R., Strader, J., Plotkin, R. M., Soria, R., Albrow, M. D., Anderson, G. E., Berg, M. van den, Bernardini, F., Bogdanov, S., Britt, C. T., Russell, D. M., Zurek, D. R.
To confirm the nature of the donor star in the ultra-compact X-ray binary candidate 47 Tuc X9, we obtained optical spectra (3,000$-$10,000 {\AA}) with the Hubble Space Telescope / Space Telescope Imaging Spectrograph. We find no strong emission or ab
Externí odkaz:
http://arxiv.org/abs/1802.00161
Autor:
Pledger, J. L., Shara, M. M., Wilde, M., Crowther, P. A., Long, K., Zurek, D., Moffat, A. F. J.
Deep narrow-band HST imaging of the iconic spiral galaxy M101 has revealed over a thousand new Wolf Rayet (WR) candidates. We report spectrographic confirmation of 10 HeII emission line sources hosting 15 WR stars. We find WR stars present at both su
Externí odkaz:
http://arxiv.org/abs/1705.01161
Autor:
Zurek, D. R., Knigge, C., Maccarone, T. J., Pooley, D., Dieball, A., Long, K. S., Shara, M., Sarajedini, A.
We present the detection of a variable star with an $18.05$ minute period in far-ultraviolet (FUV) images of the globular cluster NGC 1851 taken with the Hubble Space Telescope (HST). A candidate optical counterpart lies on the red horizontal branch
Externí odkaz:
http://arxiv.org/abs/1605.04827
Preliminary results of the ongoing search for symbiotic binary stars in the Local Group of Galaxies are presented and discussed.
Comment: Proceedings of Physics of Evolved Stars 2015: A Conference Dedicated to the Memory of Olivier Chesneau, Nic
Comment: Proceedings of Physics of Evolved Stars 2015: A Conference Dedicated to the Memory of Olivier Chesneau, Nic
Externí odkaz:
http://arxiv.org/abs/1509.05312
Autor:
Dieball, A., Bedin, L. R., Knigge, C., Rich, R. M., Allard, F., Dotter, A., Richer, H., Zurek, D.
We present an analysis of deep HST/WFC3 near-IR (NIR) imaging data of the globular cluster M4. The best-photometry NIR colour-magnitude diagram (CMD) clearly shows the main sequence extending towards the expected end of the Hydrogen-burning limit and
Externí odkaz:
http://arxiv.org/abs/1506.01400
Autor:
Thomson, G. S., Knigge, C., Dieball, A., Maccarone, T. J., Dolphin, A., Zurek, D., Long, K. S., Shara, M., Sarajedini, A.
We present the results of a multi-wavelength (FUV to I-band) survey of the stellar populations of the globular cluster NGC 6752, using STIS, ACS and WFC3 on board the Hubble Space Telescope. We have confirmed that two previously identified CV candida
Externí odkaz:
http://arxiv.org/abs/1204.4723