Zobrazeno 1 - 10
of 245
pro vyhledávání: '"Warren, S. J."'
Autor:
Barnett, R., Warren, S. J., Cross, N. J. G., Mortlock, D. J., Fan, X., Wang, F., Hewett, P. C.
We present the results of a new, deeper, and complete search for high-redshift $6.5
Externí odkaz:
http://arxiv.org/abs/2008.10297
Autor:
Laithwaite, R. C., Warren, S. J.
We use the large homogeneous sample of late M dwarfs, M7 to M9.5, of Ahmed & Warren (2019) matched to $\textit{Gaia}$ DR2, to measure the relation between absolute magnitude and spectral type, and to infer the multiplicity fraction of the population,
Externí odkaz:
http://arxiv.org/abs/2006.11092
Autor:
Dobbie, P., Warren, S. J.
Publikováno v:
The Open Journal of Astrophysics, Volume 3 id 5. 2020
This work investigates the vertical profile of the stars in the disk of the Milky Way. The models investigated are of the form $sech^{2/n}(nz/(2H))$ where, setting $\alpha = 2/n$, the three functions of the sequence $\alpha = 0,1,2$ correspond to exp
Externí odkaz:
http://arxiv.org/abs/2003.05757
Autor:
Euclid Collaboration, Barnett, R., Warren, S. J., Mortlock, D. J., Cuby, J. -G., Conselice, C., Hewett, P. C., Willott, C. J., Auricchio, N., Balaguera-Antolínez, A., Baldi, M., Bardelli, S., Bellagamba, F., Bender, R., Biviano, A., Bonino, D., Bozzo, E., Branchini, E., Brescia, M., Brinchmann, J., Burigana, C., Camera, S., Capobianco, V., Carbone, C., Carretero, J., Carvalho, C. S., Castander, F. J., Castellano, M., Cavuoti, S., Cimatti, A., Clédassou, R., Congedo, G., Conversi, L., Copin, Y., Corcione, L., Coupon, J., Courtois, H. M., Cropper, M., Da Silva, A., Duncan, C. A. J., Dusini, S., Ealet, A., Farrens, S., Fosalba, P., Fotopoulou, S., Fourmanoit, N., Frailis, M., Fumana, M., Galeotta, S., Garilli, B., Gillard, W., Gillis, B. R., Graciá-Carpio, J., Grupp, F., Hoekstra, H., Hormuth, F., Israel, H., Jahnke, K., Kermiche, S., Kilbinger, M., Kirkpatrick, C. C., Kitching, T., Kohley, R., Kubik, B., Kunz, M., Kurki-Suonio, H., Laureijs, R., Ligori, S., Lilje, P. B., Lloro, I., Maiorano, E., Mansutti, O., Marggraf, O., Martinet, N., Marulli, F., Massey, R., Mauri, N., Medinaceli, E., Mei, S., Mellier, Y., Metcalf, R. B., Metge, J. J., Meylan, G., Moresco, M., Moscardini, L., Munari, E., Neissner, C., Niemi, S. M., Nutma, T., Padilla, C., Paltani, S., Pasian, F., Paykari, P., Percival, W. J., Pettorino, V., Polenta, G., Poncet, M., Pozzetti, L., Raison, F., Renzi, A., Rhodes, J., Rix, H. -W., Romelli, E., Roncarelli, M., Rossetti, E., Saglia, R., Sapone, D., Scaramella, R., Schneider, P., Scottez, V., Secroun, A., Serrano, S., Sirri, G., Stanco, L., Sureau, F., Tallada-Crespí, P., Tavagnacco, D., Taylor, A. N., Tenti, M., Tereno, I., Toledo-Moreo, R., Torradeflot, F., Valenziano, L., Vassallo, T., Wang, Y., Zacchei, A., Zamorani, G., Zoubian, J., Zucca, E.
Publikováno v:
A&A 631, A85 (2019)
We provide predictions of the yield of $7
Externí odkaz:
http://arxiv.org/abs/1908.04310
Autor:
Ahmed, S., Warren, S. J.
Publikováno v:
A&A 623, A127 (2019)
The space density of late M dwarfs, subtypes M7-M9.5, is not well determined. We applied the photo-type method to $iz$ photometry from the Sloan Digital Sky Survey and $YJHK$ photometry from the UKIRT Infrared Deep Sky Survey, over an effective area
Externí odkaz:
http://arxiv.org/abs/1903.08932
Autor:
Barnett, R., Warren, S. J., Becker, G. D., Mortlock, D. J., Hewett, P. C., McMahon, R. G., Simpson, C., Venemans, B. P.
We present a 30h integration Very Large Telescope X-shooter spectrum of the Lyman series forest towards the $z = 7.084$ quasar ULAS J1120+0641. The only detected transmission at ${\rm S/N}>5$ is confined to seven narrow spikes in the Ly$\alpha$ fores
Externí odkaz:
http://arxiv.org/abs/1702.03687
Publikováno v:
A&A 589, A49 (2016)
We present a homogeneous sample of 1361 L and T dwarfs brighter than J = 17.5 (of which 998 are new), from an effective area of 3070 deg2, classified by the photo-type method to an accuracy of one spectral sub-type using izYJHKW1W2 photometry from SD
Externí odkaz:
http://arxiv.org/abs/1602.08582
Autor:
Barnett, R., Warren, S. J., Banerji, M., McMahon, R. G., Hewett, P. C., Mortlock, D. J., Simpson, C., Venemans, B. P., Ota, K., Shibuya, T.
Publikováno v:
A&A 575, A31 (2015)
We present new observations of the highest-redshift quasar known, ULAS J1120+0641, redshift $z=7.084$, obtained in the optical, at near-, mid-, and far-infrared wavelengths, and in the sub-mm. We combine these results with published X-ray and radio o
Externí odkaz:
http://arxiv.org/abs/1411.5551
Autor:
Page, M. J., Simpson, C., Mortlock, D. J., Warren, S. J., Hewett, P. C., Venemans, B. P., McMahon, R. G.
We present X-ray imaging and spectroscopy of the redshift z=7.084 radio-quiet quasar ULAS J112001.48+064124.3 obtained with Chandra and XMM-Newton. The quasar is detected as a point source with both observatories. The Chandra observation provides a p
Externí odkaz:
http://arxiv.org/abs/1311.1686
Autor:
Skrzypek, N., Warren, S. J.
We have developed a method "photo-type" to identify and accurately classify L and T dwarfs, onto the standard system, from photometry alone. We combine SDSS, UKIDSS and WISE data and classify point sources by comparing the izYJHKW1W2 colours against
Externí odkaz:
http://arxiv.org/abs/1310.6613