Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Riaz, Basmah"'
Autor:
Tanner, Angelle, Plavchan, Peter, Bryden, Geoff, Kennedy, Grant, Matrá, Luca, Cronin-Coltsmann, Patrick, Lowrance, Patrick, Henry, Todd, Riaz, Basmah, Gizis, John E., Riedel, Adric, Choquet, Elodie
A set of twenty late-type (K5-M5) stars were observed with the Herschel Space Observatory at 100 and 160 microns with the goal of searching for far-infrared excesses indicative of the presence of circumstellar disks. Out of this sample, four stars (T
Externí odkaz:
http://arxiv.org/abs/2004.12597
Autor:
Bowler, Brendan P., Hinkley, Sasha, Ziegler, Carl, Baranec, Christoph, Gizis, John E., Law, Nicholas M., Liu, Michael C., Shah, Viyang S., Shkolnik, Evgenya L., Riaz, Basmah, Riddle, Reed
Young stars in the solar neighborhood serve as nearby probes of stellar evolution and represent promising targets to directly image self-luminous giant planets. We have carried out an all-sky search for late-type ($\approx$K7$-$M5) stars within 100 p
Externí odkaz:
http://arxiv.org/abs/1903.06303
In this letter a near-infrared integral field study of a proto-brown dwarf candidate is presented. A $\sim$ 0\farcs5 blue-shifted outflow is detected in both H$_{2}$ and [Fe II] lines at V$_{sys}$ = (-35~$\pm$ 2)~km~s$^{-1}$ and V$_{sys}$ = (-51~$\pm
Externí odkaz:
http://arxiv.org/abs/1801.08749
Autor:
Riaz, Basmah.
Publikováno v:
Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 129 p.
Thesis (Ph.D.)--University of Delaware, 2008.
Principal faculty advisor: John E. Gizis, Dept. of Physics & Astronomy. Includes bibliographical references.
Principal faculty advisor: John E. Gizis, Dept. of Physics & Astronomy. Includes bibliographical references.
Externí odkaz:
http://proquest.umi.com/pqdweb?did=1597616011&sid=8&Fmt=2&clientId=8331&RQT=309&VName=PQD
Autor:
Phan-Bao, Ngoc, Riaz, Basmah, Lee, Chin-Fei, Tang, Ya-Wen, Ho, Paul T. P., Martin, Eduardo L., Lim, Jeremy, Ohashi, Nagayoshi, Shang, Hsien
Publikováno v:
Astrophys.J. 689 (2008) L141-L144
Studying the earliest stages in the birth of stars is crucial for understanding how they form. Brown dwarfs with masses between that of stars and planets are not massive enough to maintain stable hydrogen-burning fusion reactions during most of their
Externí odkaz:
http://arxiv.org/abs/0810.2588
We present HST/ACS observations of 19 nearby M subdwarfs in a search for binary systems. Other than the wide common proper motion pair LHS 2140/2139, none of our sdM and esdM targets are found to be binaries. Our survey is sensitive to equal-luminosi
Externí odkaz:
http://arxiv.org/abs/0709.4236
Autor:
Riaz, Basmah, Gizis, John E.
Publikováno v:
Astrophys.J.661:354-360,2007
We present detailed modeling of the disk around the TW Hydrae Association (TWA) brown dwarf 2MASSW J1207334-393254 (2M1207), using {\it Spitzer} observations from 3.6 to 24 $\micron$. The spectral energy distribution (SED) does not show a high amount
Externí odkaz:
http://arxiv.org/abs/astro-ph/0702442
Autor:
Riaz, Basmah, Gizis, John E.
Publikováno v:
Astrophys.J.659:675-679,2007
We present {\it Spitzer}/IRAC observations of the L5 dwarf, 2MASSI J1315309-264951 (2M1315). This ultracool dwarf is known to display strong emission in the H$\alpha$ line. The SED for this object does not show any IR excess, that would indicate the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0612604
Publikováno v:
Astrophys.J.650:1133-1139,2006
We present Spitzer IRAC and MIPS observations for a sample of eight M dwarfs: six dMe, one dM, and one sdMe star. All of our targets are found to have SEDs which are fitted within the error bars by a purely photospheric spectrum out to 24 micron. We
Externí odkaz:
http://arxiv.org/abs/astro-ph/0607405
Publikováno v:
Astrophys.J.639:L79-L82,2006
We present Spitzer Space Telescope observations of two TW Hydrae Association brown dwarfs, 2MASSW J1207334-393254 and 2MASSW J1139511-315921, in the IRAC and MIPS 24 micron bands. Based on their IRAC colors, we have classified them as Classical and W
Externí odkaz:
http://arxiv.org/abs/astro-ph/0606666