Publications (11)
Spatially Resolved Galaxy Star Formation and its Environmental Dependence I
Niraj Welikala, Andrew J. Connolly, Andrew M. Hopkins +2
We use the photometric information contained in individual pixels of 44,964 (0.019<z<0.125 and -23.5<M_r<-20.5) galaxies in the Fourth Data Release (DR4) of the Sloan Digital Sky S…
Stellar Imager (SI): developing and testing a predictive dynamo model for the Sun by imaging other stars
Kenneth G. Carpenter, Carolus J. Schrijver, Margarita Karovska +39
The Stellar Imager mission concept is a space-based UV/Optical interferometer designed to resolve surface magnetic activity and subsurface structure and flows of a population of Su…
The Multimission Archive at the Space Telescope Science Institute in the context of VO activities
Inga Kamp, Randall Thompson, Alberto Conti +7
In the past year, the Multimission Archive at the Space Telescope Science Institute (MAST) has taken major steps in making MAST's holdings available using VO-defined protocols and…
Quasar Candidates in the Hubble Deep Field
Alberto Conti, Julia D. Kennefick, Paul Martini +1
We focus on the search for unresolved faint quasars and AGN in the crude combine images using a multicolor imaging analysis that has proven very successful in recent years. Quasar…
Sky in Google Earth: The Next Frontier in Astronomical Data Discovery and Visualization
Ryan Scranton, Andrew Connolly, Simon Krughoff +7
Astronomy began as a visual science, first through careful observations of the sky using either an eyepiece or the naked eye, then on to the preservation of those images with photo…
The Star Formation History of Galaxies Measured from Individual Pixels. I. The Hubble Deep Field North
Alberto Conti, Andrew J. Connolly, Andrew M. Hopkins +6
We analyze the photometric information contained in individual pixels of galaxies in the Hubble Deep Field North (HDFN) using a new technique, _pixel-z_, that combines predictions…
From Correlations of Galaxy Properties to the Physics of Galaxy Formation: A Theoretical Framework
Alberto Conti, Barbara S. Ryden, David H. Weinberg
(Abridged) Motivated by forthcoming data from the Sloan Digital Sky Survey, we present a theoretical framework that can be used to interpret Principal Component Analysis (PCA) of d…
The Ultraviolet Sky: An Overview from the GALEX Surveys
Luciana Bianchi, Alberto Conti, Bernie Shiao
The Galaxy Evolution Explorer (GALEX) has performed the first surveys of the sky in the Ultraviolet (UV). Its legacy is an unprecedented database with more than 200 million source…
Globular Cluster Systems As Distance Indicators: Metallicity Effects On The Luminosity Function
Keith M. Ashman, Alberto Conti, Stephen E. Zepf
We investigate the universality of the globular cluster luminosity function (GCLF) and the use of this function as an extragalactic distance indicator. Previous studies have found…
Statistical Properties of the GALEX/SDSS matched source catalogs, and classification of the UV sources
Luciana Bianchi, Lino Rodriguez-Merino, Maurice Viton +30
We use the Galaxy Evolution Explorer (GALEX) Medium and All-Sky-Imaging Survey (MIS & AIS) data from the first public data release (GR1), matched to the Sloan Digital Sky Survey (S…
The Case for Probe-class NASA Astrophysics Missions
Martin Elvis, Jon Arenberg, David Ballantyne +45
Astrophysics spans an enormous range of questions on scales from individual planets to the entire cosmos. To address the richness of 21st century astrophysics requires a correspond…