Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Bothun, G. D."'
Autor:
Impey, C. D., Bothun, G. D.
Publikováno v:
Steward Observatory Parker Library SO QB 4 .S752 ARCH
A study of the Galactic Center stellar population is continuing with a sensitive 2μm CCD camera. Using a 64 x 64 detector array, background limited images are recorded with modest amounts of observing time (tob, 20 sec to reach K =13). Magnitudes ha
Externí odkaz:
http://hdl.handle.net/10150/623913
http://arizona.openrepository.com/arizona/handle/10150/623913
http://arizona.openrepository.com/arizona/handle/10150/623913
Using B, R, and H-alpha images of roughly equal-sized samples of low surface brightness (LSB) and high surface brightness (HSB) galaxies (~40 galaxies apiece), we have explored the dependence of HII region properties on local and global disc surface
Externí odkaz:
http://arxiv.org/abs/0810.5062
Publikováno v:
Astrophys.J. 630 (2005) 824-836
A sample of 69 galaxies with radial velocities less than 2500 km/s was selected from the HI Parkes All Sky Survey (HIPASS) to deduce details about star formation in nearby disk galaxies selected with no bias to optical surface brightness selection ef
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506039
Publikováno v:
Astrophys.J. 613 (2004) 914-932
A sample of 69 galaxies with radial velocities less than 2500 km/s was selected from the HI Parkes All Sky Survey (HIPASS) and imaged in broad band B and R and narrow band H-alpha to deduce details about star formation in nearby disk galaxies while a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406317
We present VLA HI imaging of four LSB galaxies which were thought to strongly deviate from the TF relation based on Arecibo single-dish observations. We do not detect three of the four targeted LSB galaxies in HI down to a 4-sigma limit of 0.08Jy km/
Externí odkaz:
http://arxiv.org/abs/astro-ph/0202057
Autor:
Macri, L. M., Stetson, P. B., Bothun, G. D., Freedman, W. L., Garnavich, P. M., Jha, S., Madore, B. F., Richmond, M. W.
We report on the discovery of Cepheids in the spiral galaxy NGC 2841, based on observations made with the Wide Field and Planetary Camera 2 on board the Hubble Space Telescope. NGC 2841 was observed over 12 epochs using the F555W filter, and over 5 e
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105491
Publikováno v:
Astrophys.J.Suppl. 128 (2000) 99-124
[Abridged] HST WFPC2 images were taken of four low surface brightness galaxies in the direction of the Virgo cluster. The high resolution of the WFPC2 combined with the extremely diffuse nature of the four galaxies makes them essentially transparent,
Externí odkaz:
http://arxiv.org/abs/astro-ph/9911131
[Abridged] Using the refurbished 305m Arecibo Gregorian Telescope, we detected 43 low surface brightness (LSB) galaxies from the catalog of O'Neil, Bothun, & Cornell (1997a). The detected galaxies range from 22.0 mag/arcsec^2 < mu_B(0) < 25.0 mag/arc
Externí odkaz:
http://arxiv.org/abs/astro-ph/9909129
We have fit the Fundamental Plane of Ellipticals (FP) to over 400 early-type galaxies in 20 nearby clusters (4000 < cz < 11000 km/s), using our own photometry and spectroscopy as well as measurements culled from the literature. We find that the quali
Externí odkaz:
http://arxiv.org/abs/astro-ph/9903380
Publikováno v:
AJ, December 1998
Although numerous simulations have been done to understand the effects of intense bursts of star formation on high surface brightness galaxies, few attempts have been made to understand how localized starbursts would affect both the color and surface
Externí odkaz:
http://arxiv.org/abs/astro-ph/9808359