Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Rao, Sandhya M."'
Autor:
Madhani, Janvi P., Chu, Grace E., Gomez, Carlos Vazquez, Bartel, Sinjon, Clark, Russell J., Coban, Lou W., Hartman, Marshall, Potosky, Edward M., Rao, Sandhya M., Turnshek, David A.
The results of an investigation into whether or not eclipse shadow bands have an atmospheric origin are presented. Using high altitude balloon and ground-based photodiode arrays during the 21 August 2017 total solar eclipse, data revealing the light
Externí odkaz:
http://arxiv.org/abs/1911.05841
We present ten metallicity measurements for quasar absorbers near $z=1.2$ that were selected for having unusually significant ZnII absorption in their SDSS spectra. Follow-up UV space spectroscopy of the Ly$\alpha$ region shows that all ten have damp
Externí odkaz:
http://arxiv.org/abs/1811.08813
We derive the statistical properties of neutral gas at redshifts 0.11
Externí odkaz:
http://arxiv.org/abs/1704.01634
Autor:
Rahmani, Hadi, Peroux, Celine, Turnshek, David A., Rao, Sandhya M., Quiret, Samuel, Hamilton, Timothy S., Kulkarni, Varsha P., Monier, Eric M.
We present the study of a sample of nine QSO fields, with damped-Ly-alpha (DLA) or sub-DLA systems at z~0.6, observed with the X-Shooter spectrograph at the Very Large Telescope. By suitably positioning the X-Shooter slit based on high spatial resolu
Externí odkaz:
http://arxiv.org/abs/1609.03843
The SDSS-IV extended Baryonic Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection
Autor:
Prakash, Abhishek, Licquia, Timothy C., Newman, Jeffrey A., Ross, Ashley J., Myers, Adam D., Dawson, Kyle S., Kneib, Jean-Paul, Percival, Will J., Bautista, Julian E., Comparat, Johan, Tinker, Jeremy L., Schlegel, David J., Tojeiro, Rita, Ho, Shirley, Lang, Dustin, Rao, Sandhya M., McBride, Cameron K., Zhu, Guangtun Ben, Brownstein, Joel R., Bailey, Stephen, Bolton, Adam S., Delubac, Timothee, Mariappan, Vivek, Blanton, Michael R., Reid, Beth, Schneider, Donald P., Seo, Hee-Jong, Rosell, Aurelio Carnero, Prada, Francisco
We describe the algorithm used to select the Luminous Red Galaxy (LRG) sample for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV) using photometric data from both the SDSS and the Wide-Field I
Externí odkaz:
http://arxiv.org/abs/1508.04478
Publikováno v:
ApJ 803 105 (2015)
We describe a new method of combining optical and infrared photometry to select Luminous Red Galaxies (LRGs) at redshifts $z > 0.6$. We explore this technique using a combination of optical photometry from CFHTLS and HST, infrared photometry from the
Externí odkaz:
http://arxiv.org/abs/1504.06328
We present measurements of element abundance ratios and dust in CaII~absorbers identified in SDSS DR7+DR9. In an earlier paper we formed a statistical sample of 435 CaII absorbers and postulated that their statistical properties might be representati
Externí odkaz:
http://arxiv.org/abs/1504.02029
Autor:
Madhani, Janvi P., Chu, Grace E., Gomez, Carlos Vazquez, Bartel, Sinjon, Clark, Russell J., Coban, Lou W., Hartman, Marshall, Potosky, Edward M., Rao, Sandhya M., Turnshek, David A.
Publikováno v:
In Journal of Atmospheric and Solar-Terrestrial Physics December 2020 211
Autor:
Turnshek, David A., Monier, Eric M., Rao, Sandhya M., Hamilton, Timothy S., Sardane, Gendith M., Held, Ryan
Quasar damped Ly-alpha (DLA) absorption line systems with redshifts z<1.65 are used to trace neutral gas over approximately 70 per cent of the most recent history of the Universe. However, such systems fall in the UV and are rarely found in blind UV
Externí odkaz:
http://arxiv.org/abs/1404.2914
We present the results of a survey for CaII 3934,3969 absorption-line systems culled from ~ 95,000 Sloan Digital Sky Survey (SDSS) Data Release 7 and Data Release 9 quasar spectra. With 435 doublets identified in the catalog, this list is the largest
Externí odkaz:
http://arxiv.org/abs/1404.2649