Harding E. Smith

The SWIRE/Chandra Survey: The X-ray Sources (2009)

Wilkes, Belinda J., Kilgard, Roy, Kim, Dong-Woo, Kim, Minsun, Polletta, Mari, Lonsdale, Carol, ...

We report a moderate-depth (70 ksec), contiguous 0.7 sq.deg, Chandra survey, in the Lockman Hole Field of the Spitzer/SWIRE Legacy Survey coincident with a completed, ultra-deep VLA survey with deep...

MAMBO 1.2 mm Observations of Luminous Starbursts at z ~ 2 in the SWIRE Fields (2009)

Lonsdale, Carol J., Polletta, Maria Del Carmen, Omont, Alain, Shupe, Dave, Berta, Stefano, Zylka, Robert, ...

We report on-off pointed MAMBO observations at 1.2 mm of 61 Spitzer-selected star-forming galaxies from the Spitzer Wide Area Infrared Extragalactic Legacy survey (SWIRE). The sources are selected on...

High-redshift QSOs in the SWIRE Survey and the z~3 QSO luminosity function (2008)

Siana, Brian, Del Carmen Polletta, Maria, Smith, Harding E., Lonsdale, Carol J., Gonzalez-Solares, Eduardo, Farrah, Duncan, ...

We use a simple optical/infrared (IR) photometric selection of high-redshift QSOs that identifies a Lyman break in the optical photometry and requires a red IR color to distinguish QSOs from common...

Received accepted (2007)

Harding E. Smith, Carol J. Lonsdale

We report 18cm VLBI continuum imaging observations of Arp 220, the prototype Luminous Infrared Galaxy (l~gLtir = 12.1 lLO). In previous work we showed that Arp 220 has compact, high-Tb nuclear radio...

Center for Astrophysics and Space Sciences (2007)

Harding E. Smith, Colin J. Lonsdale, Carol J. Lonsdale

We present here detailed results of an 18 cm VLBI survey of 31 luminous (L FIR> 101 1“25LO), radio-compact (0 ~O!’25) infrared galaxies (LFIRGs). High-resolution VLA maps at 15 and 22GHz are...

High-Redshift QSOs in the SWIRE Survey and the z~3 QSO Luminosity Function (2007)

Siana, Brian, Polletta, Maria Del Carmen, Smith, Harding E., Lonsdale, Carol J., Gonzalez-Solares, Eduardo, Farrah, Duncan, ...

We use a simple optical/infrared (IR) photometric selection of high-redshift QSOs that identifies a Lyman Break in the optical photometry and requires a red IR color to distinguish QSOs from common...

The radio spectra of the compact sources in Arp 220: A mixed population of supernovae and supernova remnants (2006)

Parra, Rodrigo, Conway, John E., Diamond, Philip J., Thrall, Hannah, Lonsdale, Colin J., Lonsdale, Carol J., ...

We report the first detection at multiple radio wavelengths (13, 6 and 3.6 cm) of the compact sources within both nuclei of the Ultra Luminous Infra-Red Galaxy Arp 220. We present the radio spectra...

VLBI images of 49 radio supernovae in Arp 220 (2006)

Lonsdale, Colin J., Diamond, Philip J., Thrall, Hannah, Smith, Harding E., Lonsdale, Carol J.

We have used a very long baseline interferometry (VLBI) array at 18 cm wavelength to image the nucleus of the luminous IR galaxy Arp 220 at ∼1 pc linear resolution, with very high sensitivity. The...

VLBI Images of 49 Radio Supernovae in Arp 220 (2006)

Lonsdale, Colin J., Diamond, Philip J., Thrall, Hannah, Smith, Harding E., Lonsdale, Carol J.

We have used a Very Long Baseline Interferometry (VLBI) array at 18cm wavelength to image the nucleus of the luminous IR galaxy Arp 220 at ~1 pc linear resolution, and with very high sensitivity. The...

Parametric modelling of the 3.6um to 8um colour distributions of galaxies in the SWIRE Survey (2006)

Davoodi, Payam, Oliver, Seb, Polletta, Maria Del Carmen, Rowan-Robinson, Michael, Savage, Richard S., Waddington, Ian, ...

We fit a parametric model comprising a mixture of multi-dimensional Gaussian functions to the 3.6 to 8um colour and optical photo-z distribution of galaxy populations in the ELAIS-N1 and Lockman...

The Starburst-AGN Connection: A Sensitive VLBI Survey of Luminous IRAS Galaxies (2004)

Lonsdale, Colin J., Smith, Harding E., Lonsdale, Carol J.

Results of an 18 cm VLBI survey of 31 luminous (L_(fir) greater than 10^(11.25)L dot circle),radio-compact (theta less than approximately 0."25) infrared galaxies are presented. Over half thesample...

First Insights into the Spitzer Wide-Area Infrared Extragalactic Legacy Survey (SWIRE) Galaxy Populations (2004)

Lonsdale, Carol, Polletta, Maria Del Carmen, Surace, Jason, Shupe, Dave, Fang, Fan, Xu, C. Kevin, ...

We present sub-millimeter statistical detections of galaxies discovered in the 5'x5' Spitzer Early Release Observations (to 4-15 microJy 5 sigma at 3.6-8 microns, 170 microJy at 24 microns) through a...

First Insights into the SWIRE Galaxy Populations (2004)

Lonsdale, Carol, Polletta, Maria, Surace, Jason, Shupe, David, Fang, Fan, Xu, C. Kevin, ...

We characterize the SWIRE galaxy populations in the SWIRE validation field within the Lockman Hole, based on the 3.6-24$\mu$ Spitzer data and deep U,g',r',r' optical imaging within an area ~1/3 sq....

SWIRE: The SIRTF Wide-Area Infrared Extragalactic Survey (2003)

Lonsdale, Carol J., Smith, Harding E., Rowan-Robinson, Michael, Surace, Jason, Shupe, David, Xu, Cong, ...

The SIRTF Wide-Area Infrared Extragalactic Survey (SWIRE), the largest SIRTF Legacy program, is a wide-area imaging survey to trace the evolution of dusty, star-forming galaxies, evolved stellar...

SWIRE: The SIRTF Wide-area InfraRed Extragalactic Survey (2003)

Lonsdale, Carol J., Smith, Harding E., Rowan-Robinson, Michael, Surace, Jason, Shupe, David, Xu, Cong, ...

The SIRTF Wide-area InfraRed Extragalactic survey (SWIRE), the largest SIRTF Legacy program, is a wide-area, imaging survey to trace the evolution of dusty, star-forming galaxies, evolved stellar...

VLBI Imaging of Luminous Infrared Galaxies: AGN Cores in Mrk231, UGC 5101 & NGC 7469 (2003)

Lonsdale, Carol J., Lonsdale, Colin J., Smith, Harding E., Diamond, Philip J.

We report 18cm VLBI continuum imaging observations at 5 mas resolution for UGC 5101, NGC 7469, and Mrk 231, all part of a sample of Luminous Infrared Galaxies which have been shown to have strong...

Continuum and spectral line observations of the OH Megamaser galaxy Arp 220 (2003)

Rovilos, Emmanouel, Diamond, Philip J., Lonsdale, Colin J., Lonsdale, Carol J., Smith, Harding E.

We present MERLIN observations of the continuum (both 1.6 and 5 GHz) and OH maser emission towards Arp220. the correct spatial configuration of the various componnents of the galaxy is revealed. In...

Infrared Surveys for AGN (2002)

Smith, Harding E.

From the earliest extragalactic infrared studies AGN have shown themselves to be strong infrared sources and IR surveys have revealed new populations of AGN. I briefly review current motivations for...