Nicholas Chapman

The young population of the Chamaeleon II dark cloud (2008)

Spezzi, Loredana, Alcalá, Juan M., Covino, Elvira, Frasca, Antonio, Gandolfi, Davide, Oliveira, Isa, ...

We discuss the results of the optical spectroscopic follow-up of pre-main-sequence (PMS) objects and candidates selected in the Chamaeleon II dark cloud based on data from the Spitzer Legacy survey...

The Spitzer survey of interstellar clouds in the Gould Belt. I. IC 5146 observed with IRAC and MIPS (2008)

Harvey, Paul M., Huard, Tracy L., Jørgensen, Jes K., Gutermuth, Robert A., Mamajek, Eric E., Bourke, Tyler L., ...

We present observations of two areas totalling 0.57 deg^2 in the IC 5146 star-forming region at 3.6, 4.5, 5.8, 8.0, 24, and 70 μm observed with the Spitzer Space Telescope. We reexamine the issue of...

The Spitzer c2d survey of large, nearby, interstellar clouds. X. The Chamaeleon II pre-main-sequence population as observed with IRAC and MIPS (2008)

Alcalá, Juan M., Spezzi, Loredana, Chapman, Nicholas, Huard, Tracy L., Jørgensen, Jes K., ...

We discuss the results from the combined IRAC and MIPS c2d Spitzer Legacy survey observations and complementary optical and NIR data of the Chamaeleon II (Cha II) dark cloud. We perform a census of...

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. XI. Lupus Observed With IRAC and MIPS (2008)

Merin, Bruno, Jorgensen, Jes, Spezzi, Loredana, Alcala, Juan M., Evans II, Neal J., Harvey, Paul M., ...

We present c2d Spitzer/IRAC observations of the Lupus I, III and IV dark clouds and discuss them in combination with optical and near-infrared and c2d MIPS data. With the Spitzer data, the new sample...

The young population of the Chamaeleon II dark cloud (2008)

Spezzi, Loredana, Alcala', Juan M., Covino, Elvira, Frasca, Antonio, Gandolfi, Davide, Oliveira, Isa, ...

We discuss the results of the optical spectroscopic follow-up of pre-main sequence (PMS) objects and candidates selected in the Chamaeleon II dark cloud based on data from the Spitzer Legacy survey...

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds.X. The Chamaeleon II Pre-Main Sequence Population as Observed With IRAC and MIPS (2008)

Alcala', Juan M., Spezzi, Loredana, Chapman, Nicholas, Evans II, Neal J., Huard, Tracy L., Jorgens, Jes K., ...

We discuss the results from the combined IRAC and MIPS c2d Spitzer Legacy survey observations and complementary optical and near infrared data of the Chamaeleon II (Cha II) dark cloud. We perform a...

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. VII. Ophiuchus Observed with MIPS (2008)

Padgett, Deborah L., Rebull, Luisa M., Stapelfeldt, Karl R., Chapman, Nicholas, Lai, Shih-Ping, Mundy, Lee G., ...

We present maps of 14.4 deg^2 of the Ophiuchus dark clouds observed by the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). These high-quality maps depict both numerous point...

Dust Structure and Composition Within Molecular Clouds and Cores (2007)

Chapman, Nicholas

We observed three molecular clouds and four isolated cores at wavelengths from 3.6-24 microns. The clouds we observed were Ophiuchus, Perseus, and Serpens and the cores were L204C-2, L1152, L1155C-2,...

Dust Structure and Composition Within Molecular Clouds and Cores (2007)

Chapman, Nicholas

We observed three molecular clouds and four isolated cores at wavelengths from 3.6-24 microns. The clouds we observed were Ophiuchus, Perseus, and Serpens and the cores were L204C-2, L1152, L1155C-2,...

The Spitzer c2d Survey of Weak-line T Tauri Stars II: New Constraints on the Timescale for Planet Building (2007)

Cieza, Lucas, Padgett, Deborah L., Stapelfeldt, Karl R., Augereau, Jean-Charles, Harvey, Paul, Evans, Neal J., ...

One of the central goals of the Spitzer Legacy Project ``From Molecular Cores to Planet-forming Disks'' (c2d) is to determine the frequency of remnant circumstellar disks around weak-line T Tauri...

The Spitzer c2d Survey of Large, Nearby, Insterstellar Clouds. IX. The Serpens YSO Population As Observed With IRAC and MIPS (2007)

Harvey, Paul, Merin, Bruno, Huard, Tracy L., Rebull, Luisa M., Chapman, Nicholas, Evans II, Neal J., ...

We discuss the results from the combined IRAC and MIPS c2d Spitzer Legacy observations of the Serpens star-forming region. In particular we present a set of criteria for isolating bona fide young...

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds VIII. Serpens Observed with MIPS (2007)

Harvey, Paul M., Rebull, Luisa M., Brooke, Tim, Spiesman, William J., Chapman, Nicholas, Huard, Tracy L., ...

We present maps of 1.5 square degrees of the Serpens dark cloud at 24, 70, and 160\micron observed with the Spitzer Space Telescope MIPS Camera. More than 2400 compact sources have been extracted at...

The Spitzer c2d Survey of Nearby Dense Cores. IV. Revealing the Embedded Cluster in B59 (2007)

Brooke, Timothy Y., Huard, Tracy L., Bourke, Tyler L., Boogert , A. C. Adwin, Allen, Lori E., Blake, Geoffrey A., ...

Infrared images of the dark cloud core B59 were obtained with the Spitzer Space Telescope as part of the "Cores to Disks" Legacy Science project. Photometry from 3.6-70 μm indicates at least 20...

The Spitzer c2d survey of Large, Nearby, Interstellar Clouds. V. Chamaeleon II Observed with IRAC (2006)

Porras, Alicia, Jørgensen, Jes K., Allen, Lori E., Evans II, Neal J., Bourke, Tyler L., Alcal{á}, Juan M., ...

We present IRAC (3.6, 4.5, 5.8, and 8.0 micron) observations of the Chamaeleon II molecular cloud. The observed area covers about 1 square degree defined by $A_V >2$. Analysis of the data in the 2005...

The Spitzer c2d Survey of Nearby Dense Cores: IV. Revealing the Embedded Cluster in B59 (2006)

Brooke, Timothy Y., Huard, Tracy L., Bourke, Tyler L., Boogert, A. C. Adwin, Allen, Lori E., Blake, Geoffrey A., ...

Infrared images of the dark cloud core B59 were obtained with the Spitzer Space Telescope as part of the "Cores to Disks" Legacy Science project. Photometry from 3.6-70 microns indicates at least 20...

The Spitzer c2d survey of nearby dense cores. II. Discovery of a low-luminosity object in the "evolved starless core" L1521F (2006)

Bourke, Tyler L., Myers, Philip C., Dunham, Michael M., Kauffmann, Jens, Shirley, Yancy L., ...

We present Spitzer Space Telescope observations of the "evolved starless core" L1521F that reveal the presence of a very low luminosity object (L < 0.07 L(.)). The object, L1521F-IRS, is directly...

The Spitzer c2d Survey of Nearby Dense Cores: II: Discovery of a Low Luminosity Object in the "Evolved Starless Core" L1521F (2006)

Bourke, Tyler L., Myers, Philip C., Evans II, Neal J., Dunham, Michael M., Kauffmann, Jens, Shirley, Yancy L., ...

We present Spitzer Space Telescope observations of the "evolved starless core" L1521F which reveal the presence of a very low luminosity object (L < 0.07 Lsun). The object, L1521F-IRS, is directly...

The Spitzer c2d survey of large, nearby, interstellar clouds. III. Perseus observed with IRAC (2006)

Jørgensen, Jes K., Harvey, Paul M., Huard, Tracy L., Allen, Lori E., Porras, Alicia, ...

We present observations of 3.86 deg to the 2nd of the Perseus molecular cloud complex with the Spitzer Space Telescope Infrared Array Camera (IRAC). The maps show strong extended emission arising...

The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. III. Perseus Observed with IRAC (2006)

Jorgensen, Jes K., Harvey, Paul M., Evans II, Neal J., Huard, Tracy L., Allen, Lori E., Porras, Alicia, ...

We present observations of 3.86 sq. deg. of the Perseus molecular cloud complex with the Spitzer Space Telescope Infrared Array Camera (IRAC). The maps show strong extended emission arising from...

The Spitzer c2d survey of nearby dense cores. I. First direct detection of the embedded source in IRAM 04191+1522 (2006)

Dunham, Michael M., Evans, Neal J., Bourke, Tyler L., Dullemond, Cornelis P., Young, Chadwick H., Brooke, Timothy Y., ...

We report the first detections of the Class 0 protostellar source IRAM 04191+1522 at wavelengths shortward of 60 mum with the Spitzer Space Telescope. We see extended emission in the Spitzer images...