Results 131 to 140 of about 30,917 (231)

PHAST. The Panchromatic Hubble Andromeda Southern Treasury. I. Ultraviolet and Optical Photometry of over 90 Million Stars in M31

The Astrophysical Journal
The Panchromatic Hubble Andromeda Southern Treasury (PHAST) is a large 195-orbit Hubble Space Telescope program imaging ∼0.45 deg ^2 of the southern half of M31's star-forming disk at optical and near-ultraviolet (NUV) wavelengths.
Zhuo Chen, Benjamin Williams, Dustin Lang, Andrew Dolphin, Meredith Durbin, Julianne J. Dalcanton, Adam Smercina, Léo Girardi, Claire E. Murray, Eric F. Bell, Martha L. Boyer, Richard D’Souza, Karoline Gilbert, Karl Gordon, Puragra Guhathakurta, Francois Hammer, L. Clifton Johnson, Tod R. Lauer, Margaret Lazzarini, Jeremiah W. Murphy, Ekta Patel, Amanda Quirk, Mariangelly Díaz Rodríguez, Julia Christine Roman-Duval, Robyn E. Sanderson, Anil Seth, Tobin M. Wainer, Daniel R. Weisz   +27 more
doaj   +1 more source

Massive stars dying alone: The extremely remote environment of SN 2009ip

, 2016
We present late-time HST images of the site of supernova (SN) 2009ip taken almost 3 yr after its bright 2012 luminosity peak. SN 2009ip is now slightly fainter in broad filters than the progenitor candidate detected by HST in 1999.
Andrews, Jennifer E., Mauerhan, Jon C., Smith, Nathan   +2 more
core   +1 more source

Supernova Remnants and the Interstellar Medium of M83: Imaging & Photometry with WFC3 on HST

, 2010
We present Wide Field Camera 3 images taken with the Hubble Space Telescope within a single field in the southern grand design star-forming galaxy M83. Based on their size, morphology and photometry in continuum-subtracted H$ $, [\SII], H$ $, [\OIII] and [\OII] filters, we have identified 60 supernova remnant candidates, as well as a handful of young
Dopita, Michael A., Blair, William P., Long, Knox S., Mutchler, Max, Whitmore, Bradley C., Kuntz, Kip D., Balick, Bruce, Bond, Howard E., Calzetti, Daniela, Carollo, Marcella, Disney, Michael, Frogel, Jay A., O'Connell, Robert, Hall, Donald, Holtzman, Jon A., Kimble, Randy A., MacKenty, John, McCarthy, Patrick, Paresce, Francesco, Saha, Abhijit, Silk, Joe, Sirianni, Marco, Trauger, John, Walker, Alistair R., Windhorst, Rogier, Young, Erick   +25 more
openaire   +2 more sources

Characterizing the Star Cluster Populations in Stephan’s Quintet Using HST and JWST Observations

The Astrophysical Journal
Stephan’s Quintet (SQ) is a local compact galaxy group system that exhibits significant star formation activity. A history of tidal interactions between its four member galaxies and a recent collision between an intruder galaxy and the original group are
P. Aromal, S. C. Gallagher, K. Fedotov, N. Bastian, U. Lisenfeld, J. C. Charlton, P. N. Appleton, J. Braine, K. E. Johnson, P. Tzanavaris, B. H. C. Emonts, A. Togi, C. K. Xu, P. Guillard, L. Barcos-Muñoz, L. J. Smith, I. S. Konstantopoulos   +16 more
doaj   +1 more source

The effects of dust on the optical and infrared evolution of SN 2004et

, 2011
We present an analysis of multi-epoch observations of the Type II-P supernova SN 2004et. New and archival optical spectra of SN 2004et are used to study the evolution of the Halpha and [O I] 6300A line profiles between days 259 and 646.
Andrews, Andrews, B. E. K. Sugerman, B. Ercolano, Barlow, Benetti, Bertoldi, Bianchi, Bohlin, Bouchet, Branch, Cardelli, D. L. Welch, Danziger, Dolphin, Dolphin, Draine, Ducati, Dwek, Dwek, Ercolano, Ercolano, Ercolano, Evans, Fabbri, Filippenko, Filippenko, Fitzgerald, Fransson, Geoffrey C. Clayton, Gerardy, Glass, Gordon, Hamuy, Herrmann, J. E. Andrews, J. Fabbri, Joseph S. Gallagher, Karachentsev, Kennicutt, Kirshner, Kotak, Kotak, Kozasa, Li, Li, Lucy, M. J. Barlow, M. Meixner, M. Otsuka, Maguire, Maiolino, Makovoz, Mathis, Meikle, Meikle, Meixner, Misra, Nozawa, Nugent, Panagia, Patat, Pozzo, R. Wesson, Richardson, Sahu, Schlegel, Stetson, Sugerman, Sugerman, Sugerman, Suntzeff, Szalai, Thatte, Todini, Tomaney, Walker, Welch, Wesson, Wooden, Woosley, Zubko, Zwitter   +82 more
core   +2 more sources

Deep HST-WFPC2 photometry of NGC 288. I. Binary Systems and Blue Stragglers

, 2001
We present the first results of a deep WFPC2 photometric survey of the loose galactic globular cluster NGC 288. The fraction of binary systems is estimated from the color distribution of objects near the Main Sequence (MS) with a method analogous to that introduced by Rubenstein & Bailyn(1997).
Bellazzini, M., Pecci, F. Fusi, Messineo, M., Monaco, L., Rood, R. T.   +4 more
openaire   +2 more sources

Cosmicflows-2: The Data

, 2013
Cosmicflows-2 is a compilation of distances and peculiar velocities for over 8000 galaxies. Numerically the largest contributions come from the luminosity-linewidth correlation for spirals, the TFR, and the related Fundamental Plane relation for E/S0 ...
Courtois, Helene M., Dolphin, Andrew E., Fisher, J. Richard, Heraudeau, Philippe, Jacobs, Bradley A., Karachentsev, Igor D., Makarov, Dmitry, Makarova, Lidia, Mitronova, Sofia, Rizzi, Luca, Shaya, Edward J., Sorce, Jenny G., Tully, R. Brent, Wu, Po-Feng   +13 more
core   +3 more sources

Constraints on thick disc and halo parameters from HST photometry of field stars in the Galaxy [PDF]

, 2001
L. O. Kerber, S. C. Javiel, B. X. Santiago   +2 more
openalex   +2 more sources

Exploring the Diversity of Faint Satellites in the M81 Group

The Astrophysical Journal
In the last decade, we have been able to probe further down the galaxy luminosity function than ever before and expand into the regime of ultra-faint dwarfs (UFDs), which are some of the best probes we have of small-scale cosmology and galaxy formation ...
Katya Gozman, Eric F. Bell, In Sung Jang, Jose Marco Arias, Jeremy Bailin, Roelof S. de Jong, Richard D’Souza, Oleg Y. Gnedin, Antonela Monachesi, Paul A. Price, Vaishnav V. Rao, Adam Smercina   +11 more
doaj   +1 more source

The Faint Satellite System of NGC 253: Insights into Low-density Environments and No Satellite Plane

The Astrophysical Journal
We have conducted a systematic search around the Milky Way (MW) analog NGC 253 ( D = 3.5 Mpc), as a part of the Panoramic Imaging Survey of Centaurus and Sculptor (PISCeS)—a Magellan+Megacam survey to identify dwarfs and other substructures in resolved ...
Burçin Mutlu-Pakdil, David J. Sand, Denija Crnojević, Paul Bennet, Michael G. Jones, Kristine Spekkens, Ananthan Karunakaran, Dennis Zaritsky, Nelson Caldwell, Catherine E. Fielder, Puragra Guhathakurta, Anil C. Seth, Joshua D. Simon, Jay Strader, Elisa Toloba   +14 more
doaj   +1 more source