Results 61 to 70 of about 62,204 (222)

The Nature of Starbursts: I. The Star Formation Histories of Eighteen Nearby Starburst Dwarf Galaxies

, 2010
We use archival HST observations of resolved stellar populations to derive the star formation histories (SFHs) of 18 nearby starburst dwarf galaxies.
Aloisi, Andrew Dolphin, Angeretti, Annibali, Aparicio, Benjamin Williams, Bertelli, Bolatto, Bottinelli, Cannon, Cannon, Cole, Colless, Daniel Weisz, David Stark, de Blok, de Vaucouleurs, Dohm-Palmer, Drozdovsky, Drozdovsky, Evan D. Skillman, Gieren, Gil de Paz, Gogarten, Grocholski, Harris, Harris, Heckman, Heckman, Heydari-Malayeri, Holtzman, Holtzman, Huchtmeier, Huchtmeier, Israel, Israel, John M. Cannon, Jon Holtzman, Julianne Dalcanton, Karachentsev, Kaviraj, Kennicutt, Kristen B. W. McQuinn, Lee, Lee, Leroy, López-Sánchez, Madau, Marlowe, Marlowe, Mas-Hesse, Mayer, McQuinn, McQuinn, Meurer, Méndez, Nishi, O'Connell, Oey, Omukai, Sakai, Scalo, Schaerer, Schlegel, Sebastian Hidalgo-Rodríguez, Skillman, Skillman, Skillman, Spaans, Taylor, Thornley, Tremonti, Tully, van Zee, van Zee, Walter, Weisz, Williams, Wilson   +78 more
core   +1 more source

Ultra-Compact Dwarfs around NGC 3268 [PDF]

, 2014
We present radial velocities (from Gemini/GMOS) of the second sample of ultra-compact dwarfs (UCDs) and bright globular clusters (GCs) in the Antlia cluster.
Bassino, Lilia P., Calderón, Juan Pablo, Caso, Juan Pablo, Castelli, Analía V. Smith, Richtler, Tom   +4 more
core   +3 more sources

On the Age Distribution of Classical Cepheids in the Galaxy

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT We revisit the problem of the positive correlation between age and Galactocentric distance seen in Galactic Classical Cepheids, which at first sight may seem counter‐intuitive in the context of inside‐out galaxy formation. To explain it, we use the Besançon Galaxy Model and a simulation of star particles in the Galactic disc coupled with ...
Friedrich Anders, Chloé Padois, Marc Vilanova Sar, Marcin Semczuk, Marc del Alcázar‐Julià, Francesca Figueras   +5 more
wiley   +1 more source

pop-cosmos: A Comprehensive Picture of the Galaxy Population from COSMOS Data

The Astrophysical Journal Supplement Series
We present pop-cosmos : a comprehensive model characterizing the galaxy population, calibrated to 140,938 ( r < 25 selected) galaxies from the Cosmic Evolution Survey (COSMOS) with photometry in 26 bands from the ultraviolet to the infrared. We construct
Justin Alsing, Stephen Thorp, Sinan Deger, Hiranya V. Peiris, Boris Leistedt, Daniel Mortlock, Joel Leja   +6 more
doaj   +1 more source

Surface Photometry of Spiral Galaxy NGC 5005 and Elliptical Galaxy NGC 4278

مجلة بغداد للعلوم, 2018
Two galaxies have been chosen, spiral galaxy NGC 5005 and elliptical galaxy NGC 4278 to study their photometric properties by using surface photometric techniques with griz-Filters. Observations are obtained from the Sloan Digital Sky Survey (SDSS).
Baghdad Science Journal
doaj   +1 more source

The Whole is Greater than the Sum of the Parts: Optimizing the Joint Science Return from LSST, Euclid and WFIRST [PDF]

, 2015
The focus of this report is on the opportunities enabled by the combination of LSST, Euclid and WFIRST, the optical surveys that will be an essential part of the next decade's astronomy.
Bean, R., Connolly, A., Dell'antonio, I., Frieman, J., Gawiser, E., Gehrels, N., Gladney, L., Heitmann, K., Helou, G., Hirata, C., Ho, S., Ivezić, Ž., Jain, B., Jarvis, M., Kahn, S., Kalirai, J., Kim, A., Lupton, R., Mandelbaum, R., Marshall, P., Newman, J. A., Perlmutter, S., Postman, M., Rhodes, J., Spergel, D., Strauss, M. A., Tyson, J. A., Walkowicz, L., Wood-Vasey, W. M.   +28 more
core   +1 more source

The Peculiar SN 2005hk: Do Some Type Ia Supernovae Explode as Deflagrations? [PDF]

, 2006
We present extensive u'g'r'i'BVRIYJHKs photometry and optical spectroscopy of SN 2005hk. These data reveal that SN 2005hk was nearly identical in its observed properties to SN 2002cx, which has been called ``the most peculiar known type Ia supernova ...
Alexei V. Filippenko, Andrew Becker, Antilogus P., Barry F. Madore, Ben Dilday, Bruce Bassett, Carlos Contreras, Christopher R. Burns, Contardo G., Darren DePoy, David Murphy, Donald P. Schneider, Franklin J. D. Serduke, Gajus Miknaitis, Ganeshalingam M., Gastón Folatelli, Hubert Lampeitl, J. Eastman, J. L. Marshall, John Marriner, Jon Holtzman, Joshua A. Frieman, José L. Prieto, Kevin Krisciunas, Kurt van der Heyden, M. M. Phillips, Mario Hamuy, Masao Sako, Miguel Roth, Mohan Ganeshalingam, Naoki Yasuda, Nicholas B. Suntzeff, Nidia Morrell, P. Milne, Pamela Wyatt, Peter M. Garnavich, Richard Kessler, Ryan Chornock, Ryan J. Foley, S. Frank, S. E. Persson, S. I. Blinnikov, Saurabh Jha, Sergio González, Weidong Li, Wendy L. Freedman, Wojtek Krzeminski   +46 more
core   +2 more sources

Lactea: Web‐Based Spectrum‐Preserving Multi‐Resolution Visualization of the GAIA Star Catalog

Computer Graphics Forum, Volume 44, Issue 3, June 2025.
Abstract The explosion of data in astronomy has resulted in an era of unprecedented opportunities for discovery. The GAIA mission's catalog, containing a large number of light sources (mostly stars) with several parameters such as sky position and proper motion, is playing a significant role in advancing astronomy research and has been crucial in ...
Reem Alghamdi, Markus Hadwiger, Guido Reina, Alberto Jaspe‐Villanueva   +3 more
wiley   +1 more source

The JWST Resolved Stellar Populations Early Release Science Program. V. DOLPHOT Stellar Photometry for NIRCam and NIRISS

The Astrophysical Journal Supplement Series
We present NIRCam and NIRISS modules for DOLPHOT, a widely used crowded-field stellar photometry package. We describe details of the modules including pixel masking, astrometric alignment, star finding, photometry, catalog creation, and artificial star ...
Daniel R. Weisz, Andrew E. Dolphin, Alessandro Savino, Kristen B. W. McQuinn, Max J. B. Newman, Benjamin F. Williams, Nitya Kallivayalil, Jay Anderson, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Karin M. Sandstrom, Andrew A. Cole, Jack T. Warfield, Evan D. Skillman, Roger E. Cohen, Rachael Beaton, Alessandro Bressan, Alberto Bolatto, Michael Boylan-Kolchin, Alyson M. Brooks, James S. Bullock, Charlie Conroy, Michael C. Cooper, Julianne J. Dalcanton, Aaron L. Dotter, Tobias K. Fritz, Christopher T. Garling, Mario Gennaro, Karoline M. Gilbert, Leo Girardi, Benjamin D. Johnson, L. Clifton Johnson, Jason Kalirai, Evan N. Kirby, Dustin Lang, Paola Marigo, Hannah Richstein, Edward F. Schlafly, Erik J. Tollerud, Andrew Wetzel   +40 more
doaj   +1 more source

Near-Infrared Survey and Photometric Redshifts in the Extended GOODS-North field

, 2018
We present deep $J$ and $H$-band images in the extended Great Observatories Origins Deep Survey-North (GOODS-N) field covering an area of 0.22 $\rm{deg}^{2}$.
Ashby, Matthew L. N., Bau-Ching, Hsieh, Chen, Yi-Wen, Daddi, Emanuele, Dickinson, Mark, Elbaz, David, Fazio, Giovanni G., Foucaud, Sebastien, Hsu, Li-Ting, Huang, Jiasheng, Koo, David C., Lee, Chien-Hsiu, Lin, Lihwai, Morrison, Glenn, Ouchi, Masami, Owen, Frazer, Pannella, Maurilio, Pope, Alexendra, Scott, Douglas, Simard, Luc, Wang, Shiang-Yu, Wang, Wei-Hao, Willner, S. P., Yan, Chi-Hung, Yan, Haojing   +24 more
core   +1 more source