Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Strom, Stephen E."'
Autor:
Najita, Joan R., Carr, John S., Strom, Stephen E., Watson, Dan M., Pascucci, Ilaria, Hollenbach, David, Gorti, Uma, Keller, Luke
We report sensitive Spitzer IRS spectroscopy in the 10-20 micron region of TW Hya, a nearby T Tauri star. The unusual spectral energy distribution of the source, that of a transition object, indicates that the circumstellar disk in the system has exp
Externí odkaz:
http://arxiv.org/abs/1002.4623
Publikováno v:
Mon.Not.Roy.Astron.Soc.378:369-378,2007
The unusual properties of transition objects (young stars with an optically thin inner disc surrounded by an optically thick outer disc) suggest that significant disc evolution has occured in these systems. We explore the nature of these systems by e
Externí odkaz:
http://arxiv.org/abs/0704.1681
Autor:
Olsen, Knut A. G., Blum, Robert D., Stephens, Andrew W., Davidge, Tim J., Massey, Philip, Strom, Stephen E., Rigaut, Francois
Publikováno v:
Astron.J.132:271-289,2006
We discuss H and K observations of three fields in the bulge and disk of M31 obtained with the Altair adaptive optics system and NIRI instrument on Gemini North. These are the highest resolution and deepest near-infrared observations obtained to date
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603793
Autor:
Kim, Jinyoung Serena, Hines, Dean C., Backman, Dana E., Hillenbrand, Lynne A., Meyer, Michael R., Rodmann, Jens, Moro-Martin, Amaya, Carpenter, John M., Silverstone, Murray D., Bouwman, Jeroen, Mamajek, Eric E., Wolf, Sebastian, Malhotra, Renu, Pascucci, Ilaria, Najita, Joan, Padgett, Deborah L., Henning, Thomas, Brooke, Timothy Y., Cohen, Martin, Strom, Stephen E., Stobie, Elizabeth B., Engelbracht, Charles W., Gordon, Karl D., Misselt, Karl, Morrison, Jane E., Muzerolle, James, Su, Kate Y. L.
Publikováno v:
Astrophys.J.632:659-669,2005
We present the discovery of debris systems around three solar mass stars based upon observations performed with the Spitzer Space Telescope as part of a Legacy Science Program, ``the Formation and Evolution of Planetary Systems'' (FEPS). We also conf
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506434
Projected rotational velocities have been measured for 216 B0--B9 stars in the rich, dense h and chi Persei double cluster, and compared with the distribution of rotational velocities for a sample of field stars having comparable ages and masses. For
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410337
We review the present knowledge of disk accretion in young low mass stars, and in particular, the mass accretion rate and its evolution with time. The methods used to obtain mass accretion rates from ultraviolet excesses and emission lines are descri
Externí odkaz:
http://arxiv.org/abs/astro-ph/9902335
Autor:
Padgett, Deborah L., Brandner, Wolfgang, Stapelfeldt, Karl R., Strom, Stephen E., Terebey, Susan, Koerner, David
Publikováno v:
Astron.J.117:1490-1504,1999
We present HST/NICMOS observations with 0.1" (15 AU) resolution of six young stellar objects in the Taurus star-formation region. The targets of our survey are three Class I IRAS sources (IRAS 04016+2610, IRAS 04248+2612, and IRAS 04302+2247) and thr
Externí odkaz:
http://arxiv.org/abs/astro-ph/9902101
Publikováno v:
Astrophys.J. 508 (1998) 397
We present a catalogue of H-band spectra for 85 stars of approximately solar abundance observed at a resolving power of 3000 with the KPNO Mayall 4m FTS. The atlas covers spectral types O7-M5 and luminosity classes I-V as defined on the MK system. We
Externí odkaz:
http://arxiv.org/abs/astro-ph/9808206