George H. Rieke

Spitzer and HHT observations of starless cores: masses and environments (2009)

Stutz, Amelia M., Rieke, George H., Bieging, John H., Balog, Zoltan, Heitsch, Fabian, Kang, Miju, ...

We present Spitzer observations of a sample of 12 starless cores selected to have prominent 24 micron shadows. The Spitzer images show 8 and 24 micron shadows and in some cases 70 micron shadows;...

Evidence for Dynamical Changes in a Transitional Protoplanetary Disk with Mid-infrared Variability (2009)

Muzerolle, James, Flaherty, Kevin, Balog, Zoltan, Furlan, Elise, Smith, Paul S., Allen, Lori, ...

We present multi-epoch Spitzer Space Telescope observations of the transitional disk LRLL 31 in the 2-3 Myr-old star forming region IC 348. Our measurements show remarkable mid-infrared variability...

Cosmic Evolution of Star Formation in Type-1 Quasar Hosts Since z = 1 (2009)

Shi, Yong, Rieke, George H., Ogle , Patrick, Jiang, Linhua, Diamond-Stanic, Aleksandar M.

We present Spitzer Infrared Spectrograph observations of a complete sample of 57 Sloan Digital Sky Survey type-1 quasars at z ~ 1. Aromatic features at 6.2 and/or 7.7 μm are detected in about half...

Local Luminous Infrared Galaxies: Spatially resolved mid-infrared observations with Spitzer/IRS (2009)

Alonso-Herrero, Almudena, Pereira-Santaella, Miguel, Rieke, George H., Colina, Luis, Engelbracht, Charles W., Perez-Gonzalez, Pablo, ...

Luminous Infrared (IR) Galaxies (LIRGs) are an important cosmological class of galaxies as they are the main contributors to the co-moving star formation rate density of the universe at z=1. In this...

Cosmic Evolution of Star Formation In SDSS Quasar Hosts Since z=1 (2009)

Shi, Yong, Rieke, George H., Ogle, Patrick, Jiang, Linhua, Diamond-Stanic, Aleksandar M.

We present Spitzer IRS observations of a complete sample of 57 SDSS type-1 quasars at z~1. Aromatic features at 6.2 and/or 7.7 um are detected in about half of the sample and show profiles similar to...

Isotropic Luminosity Indicators in a Complete AGN Sample (2009)

Diamond-Stanic, Aleksandar M., Rieke, George H., Rigby, Jane R.

The [O IV] 25.89 micron line has been shown to be an accurate indicator of active galactic nucleus (AGN) intrinsic luminosity in that it correlates well with hard (10-200 keV) X-ray emission. We...

The Extreme Star Formation Activity of Arp299 Revealed by Spitzer IRS Spectral Mapping (2009)

Alonso-Herrero, Almudena, Rieke, George H., Colina, Luis, Pereira-Santaella, Miguel, Garcia-Marin, Macarena, Smith, J. D. T., ...

We present Spitzer/IRS spectral mapping observations of the luminous infrared galaxy (LIRG) Arp299 (IC694 + NGC3690) covering the central 45arcsec ~ 9kpc. The integrated mid-IR spectrum of Arp299 is...

Spitzer 70/160 μm observations of high-redshift ULIRGs and HyLIRSs in the Boötes field (2009)

Tyler, Krystal D., Le Floc'h, Emeric, Rieke, George H., Dey, Arjun, Desai, Vandana, Brand, Kate, ...

We present new 70 and 160 μm observations of a sample of extremely red (R – [24] ≳ 15 mag), mid-infrared bright, high-redshift (1.7 ≾ z ≾ 2.8) galaxies. All targets detected in the...

The IR Luminosity Functions of Rich Clusters (2008)

Bai, Lei, Rieke, George H., Rieke, Marcia J., Christlein, Daniel, Zabludoff, Ann I.

We present MIPS observations of the cluster A3266. About 100 spectroscopic cluster members have been detected at 24 micron. The IR luminosity function in A3266 is very similar to that in the Coma...

Spitzer Observations of L429: A Near-collapse or Collapsing Starless Core (2008)

Stutz, Amelia M., Bourke, Tyler L., Rieke, George H., Bieging, John H., Misselt, Karl A., Myers, Philip C., ...

We present Spitzer infrared observations of the starless core L429. The IR images of this core show an absorption feature, caused by the dense core material, at wavelengths 35 mag near the center....

Spitzer and HHT observations of Bok globule B335: isolated star formation efficiency and cloud structure (2008)

Stutz, Amelia M., Rubin, Mark, Werner, Michael W., Rieke, George H., Bieging, John H., Keene, Jocelyn, ...

We present infrared and millimeter observations of Barnard 335, the prototypical isolated Bok globule with an embedded protostar. Using Spitzer data we measure the source luminosity accurately; we...

Spitzer/IRS Mapping of Local Luminous Infrared Galaxies (2008)

Pereira-Santaella, Miguel, Alonso-Herrero, Almudena, Rieke, George H., Colina, Luis

We present results of our program Spitzer/IRS Mapping of local Luminous Infrared Galaxies (LIRGs). The maps cover the central 20"x20" or 30"x 30" regions of the galaxies, and use all four IRS modules...

Spitzer Observations of Bok Globule B335: Isolated Star Formation Efficiency and Cloud Structure (2008)

Stutz, Amelia M., Rubin, Mark, Werner, Michael W., Rieke, George H., Bieging, John H., Keene, Jocelyn, ...

We present infrared and millimeter observations of Barnard 335, the prototypical isolated Bok globule with an embedded protostar. Using Spitzer data we measure the source luminosity accurately; we...

The Cassiopeia A Supernova was of Type IIB (2008)

Krause, Oliver, Birkmann, Stephan M., Usuda, Tomonori, Hattori, Takashi, Goto, Miwa, Rieke, George H., ...

Cassiopeia A is one of the youngest supernova remnants known in the Milky Way and a unique laboratory for supernova physics. We present an optical spectrum of the Cassiopeia A supernova near maximum...

The Behavior of the Aromatic Features in M101 HII Regions: Evidence for Dust Processing (2008)

Gordon, Karl D., Engelbracht, Charles W., Rieke, George H., Misselt, K. A., Smith, J. -D. T., Kennicutt Jr, Robert C.

The aromatic features in M101 were studied spectroscopically and photometrically using observations from all three instruments on the Spitzer Space Telescope. The global SED of M101 shows strong...

Absolute calibration and characterization of the multiband imaging photometer for Spitzer. IV. The spectral energy distribution mode (2008)

Lu, Nanyao, Smith, Paul S., Engelbracht, Charles W., Noriega-Crespo, Alberto, Morrison, Jane, Gordon, Karl D., ...

The spectral energy distribution (SED) mode of the Multiband Imaging Photometer for Spitzer (MIPS) aboard the Spitzer Space Telescope provides low-spectral resolution (R ≈ 15–25) spectroscopy in...

Spitzer Mid- to Far-Infrared Flux Densities of Distant Galaxies (2007)

Papovich, Casey, Rudnick, Gregory, Le Floc'h, Emeric, Van Dokkum, Pieter G., Rieke, George H., Taylor, Edward N., ...

We study the infrared (IR) properties of high-redshift galaxies using deep Spitzer 24, 70, and 160 μm data. Our primary interest is to improve the constraints on the total IR luminosities, L_(IR),...

The stellar mass assembly of galaxies from z=0 to z=4. Analysis of a sample selected in the rest-frame near-infrared with Spitzer (2007)

Perez-Gonzalez, Pablo G., Rieke, George H., Villar, Victor, Barro, Guillermo, Blaylock, Myra, Egami, Eiichi, ...

Using a sample of ~28,000 sources selected at 3.6-4.5 microns with Spitzer observations of the HDF-N, the CDF-S, and the Lockman Hole (surveyed area: ~664 arcmin^2), we study the evolution of the...

Search for IR Emission from Intracluster Dust in A2029 (2007)

Bai, Lei, Rieke, George H., Rieke, Marcia J.

We have searched for IR emission from the intracluster dust (ICD) in the galaxy cluster A2029. Weak signals of enhanced extended emission in the cluster are detected at both 24 and 70 micron....

Aromatic Features in AGN: Star-Forming Infrared Luminosity Function of AGN Host Galaxies (2007)

Shi, Yong, Ogle, Patrick, Rieke, George H., Antonucci, Robert, Hines, Dean C., Smith, Paul S., ...

We describe observations of aromatic features at 7.7 and 11.3 um in AGN of three types including PG, 2MASS and 3CR objects. The feature has been demonstrated to originate predominantly from star...

Spitzer Mid-to-Far-Infrared Flux Densities of Distant Galaxies (2007)

Papovich, Casey, Rudnick, Gregory, Floc'h, Emeric Le, Van Dokkum, Pieter G., Rieke, George H., Taylor, Edward N., ...

We study the infrared (IR) properties of high-redshift galaxies using deep Spitzer 24, 70, and 160 micron data. Our primary interest is to improve the constraints on the total IR luminosities, L(IR),...

Infrared Spectral Energy Distributions of z~0.7 Star-Forming Galaxies (2007)

Zheng, Xian Zhong, Dole, Herve, Bell, Eric F., Floc'h, Emeric Le, Rieke, George H., Rix, Hans-Walter, ...

We analyze the infrared (IR) spectral energy distributions (SEDs) for 10micron < lambda(rest) < 100micron for ~600 galaxies at z~0.7 in the extended Chandra Deep Field South by stacking their Spitzer...

Dust and Atomic Gas in Dwarf Irregular Galaxies of the M81 Group: The SINGS and THINGS View (2007)

Walter, Fabian, Cannon, John M., Roussel, Hélène, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...

We present observations of the dust and atomic gas phase in seven dwarf irregular galaxies of the M81 group from the Spitzer SINGS and VLA THINGS surveys. The Spitzer observations provide a first...

Spitzer observations of a 24 micron shadow: Bok Globule CB190 (2007)

Stutz, Amelia M., Bieging, John H., Rieke, George H., Shirley, Yancy L., Balog, Zoltan, Gordon, Karl D., ...

We present Spitzer observations of the dark globule CB190 (L771). We observe a roughly circular 24 micron shadow with a 70 arcsec radius. The extinction profile of this shadow matches the profile...

Near and Mid-IR Photometry of the Pleiades, and a New List of Substellar Candidate Members (2007)

Stauffer, John R., Hartmann, Lee W., Fazio, Giovanni G., Allen, Lori E., Patten, Brian M., Lowrance, Patrick J., ...

We make use of new near and mid-IR photometry of the Pleiades cluster in order to help identify proposed cluster members. We also use the new photometry with previously published photometry to define...

IR observations of MS 1054-03: Star Formation and its Evolution in Rich Galaxy Clusters (2007)

Bai, Lei, Marcillac, Delphine, Rieke, George H., Rieke, Marcia J., Tran, Kim-Vy H., Hinz, Joannah L., ...

We study the infrared (IR) properties of galaxies in the cluster MS 1054-03 at z=0.83 by combining MIPS 24 micron data with spectra of more than 400 galaxies and a very deep K-band selected catalog....

The dependence of Star Formation on Galaxy Stellar Mass (2007)

Zheng, Xian Zhong, Bell, Eric F., Papovich, Casey, Wolf, Christian, Meisenheimer, Klaus, Rix, Hans-Walter, ...

We combine Spitzer 24micron observations with data from the COMBO-17 survey for ~15,000 0.2

The dependence of star formation on galaxy stellar mass (2007)

Zheng, Xian Zhong, Bell, Eric F., Papovich, Casey, Wolf, Christian, Meisenheimer, Klaus, Rix, Hans-Walter, ...

We combine Spitzer 24 mum observations with data from the COMBO-17 survey for ~15,000 0.2

Dust and atomic gas in dwarf irregular galaxies of the M81 group: the SINGS and THINGS view (2007)

Walter, Fabian, Cannon, John M., Roussel, Hélène, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...

We present observations of the dust and atomic gas phase in seven dwarf irregular galaxies of the M81 group from the Spitzer SINGS and VLA THINGS surveys. The Spitzer observations provide a first...

Aromatic features in AGNs: star-forming infrared luminosity function of AGN host galaxies (2007)

Shi, Yong, Ogle, Patrick, Rieke, George H., Antonucci, Robert, Hines, Dean C., Smith, Paul S., ...

We describe observations of aromatic features at 7.7 and 11.3 mum in AGNs of three types, including PG, 2MASS, and 3CR objects. The feature has been demonstrated to originate predominantly from star...

The all-wavelength extended groth strip international survey (AEGIS) data sets (2007)

Davis, Michael A., Guhathakurta, Puragra, Konidaris, Nick P., Newman, Jeffrey A., Ashby, Matthew L. N., Biggs, Andrew D., ...

In this the first of a series of Letters, we present a panchromatic data set in the Extended Groth Strip region of the sky. Our survey, the All-Wavelength Extended Groth Strip International Survey...

The quest for obscured AGN at cosmological distances: Infrared Power-Law Galaxies (2006)

Alonso-Herrero, Almudena, Donley, Jennifer L., Rieke, George H., Rigby, Jane R., Perez-Gonzalez, Pablo G.

We summarize multiwavelength properties of a sample of galaxies in the CDF-N and CDF-S whose Spectral Energy Distributions (SEDs) exhibit the characteristic power-law behavior expected for AGN in the...

Ultraviolet through far-infrared spatially resolved analysis of the recent star formation in M81 (NGC 3031) (2006)

Pérez-González, Pablo G., Gordon, Karl D., Misselt, Karl A., Gil De Paz, Armando, Engelbracht, Charles W., ...

The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet to the far-infrared. We compare these data with models of the...

Spitzer 24 Micron Observations of Open Cluster IC 2391 and Debris Disk Evolution of FGK Stars (2006)

Siegler, Nick, Muzerolle, James, Young, Erick T., Rieke, George H., Mamajek, Eric E., Trilling, David E., ...

We present 24 micron Spitzer/MIPS photometric observations of the ~50 Myr open cluster IC 2391. Thirty-four cluster members ranging in spectral type from B3-M5 were observed in the central square...

Probing the Evolution of IR Properties of z~6 Quasars: Spitzer Observations (2006)

Jiang, Linhua, Fan, Xiaohui, Hines, Dean C., Shi, Yong, Vestergaard, Marianne, Bertoldi, Frank, ...

We present Spitzer observations of thirteen z~6 quasars using the Infrared Array Camera (IRAC) and Multiband Imaging Photometer for Spitzer (MIPS). All the quasars except SDSS J000552.34-000655.8...

Ultraviolet Through Far-Infrared Spatially Resolved Analysis of the Recent Star Formation in M81 (NGC3031) (2006)

Perez-Gonzalez, Pablo G., Kennicutt Jr., Robert C., Gordon, Karl D., Misselt, Karl A., De Paz, Armando Gil, Engelbracht, Charles W., ...

The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare these data with...

The James Webb Space Telescope (2006)

Gardner, Jonathan P., Mather, John C., Clampin, Mark, Doyon, Rene, Greenhouse, Matthew A., Hammel, Heidi B., ...

The James Webb Space Telescope (JWST) is a large (6.6m), cold (50K), infrared-optimized space observatory that will be launched early in the next decade. The observatory will have four instruments: a...

Spitzer 24 micron Survey of Debris Disks in the Pleiades (2006)

Gorlova, Nadya, Rieke, George H., Muzerolle, James, Stauffer, John R., Siegler, Nick, Young, Erick T., ...

We performed a 24 micron 2 Deg X 1 Deg survey of the Pleiades cluster, using the MIPS instrument on Spitzer. Fifty four members ranging in spectral type from B8 to K6 show 24 micron fluxes consistent...

Ultraviolet Through Far-Infrared Spatially Resolved Analysis of the Recent Star Formation in M81 (NGC3031) (2006)

Perez-Gonzalez, Pablo G., Kennicutt Jr., Robert C., Gordon, Karl D., Misselt, Karl A., De Paz, Armando Gil, Engelbracht, Charles W., ...

The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare these data with...

The Discovery of Three New z>5 Quasars in the AGN and Galaxy Evolution Survey (2006)

Cool, Richard J., Kochanek, Christopher S., Eisenstein, Daniel J., Stern, Daniel, Brand, Kate, Brown, Michael J. I., ...

We present the discovery of three z>5 quasars in the AGN and Galaxy Evolution Survey (AGES) spectroscopic observations of the NOAO Deep Wide-Field Survey (NDWFS) Bootes Field. These quasars were...

Warm Dust and Spatially Variable PAH Emission in the Dwarf Starburst Galaxy NGC 1705 (2006)

Cannon, John M., Smith, John-David T., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...

We present Spitzer observations of the dwarf starburst galaxy NGC 1705 obtained as part of SINGS. The galaxy morphology is very different shortward and longward of ~5 microns: short-wavelength...

Dynamical Masses in Luminous Infrared Galaxies (2006)

Hinz, Joannah L., Rieke, George H.

We have studied the dynamics and masses of a sample of ten nearby luminous and ultraluminous infrared galaxies (LIRGS and ULIRGs), using 2.3 micron CO absorption line spectroscopy and near-infrared...

The Cosmic Infrared Background Resolved by Spitzer. Contributions of Mid-Infrared Galaxies to the Far-Infrared Background (2006)

Dole, Herve, Lagache, Guilaine, Puget, Jean-Loup, Caputi, Karina I., Fernandez-Conde, Nestor, Floc'h, Emeric Le, ...

Aims. We quantify the contributions of 24um galaxies to the Far-Infrared (FIR) Background at 70 and 160um. We provide new estimates of the Cosmic Infrared Background (CIB), and compare it with the...

Ultraviolet Through Far-Infrared Spatially Resolved Analysis of the Recent Star Formation in M81 (NGC3031) (2006)

Perez-Gonzalez, Pablo G., Kennicutt Jr., Robert C., Gordon, Karl D., Misselt, Karl A., De Paz, Armando Gil, Engelbracht, Charles W., ...

The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare these data with...

Ultraviolet Through Far-Infrared Spatially Resolved Analysis of the Recent Star Formation in M81 (NGC3031) (2006)

Perez-Gonzalez, Pablo G., Kennicutt Jr., Robert C., Gordon, Karl D., Misselt, Karl A., De Paz, Armando Gil, Engelbracht, Charles W., ...

The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare these data with...

Probing the evolution of infrared properties of z ~ 6 quasars: Spitzer observations (2006)

Jiang, Linhua, Fan, Xiaohui, Hines, Dean C., Shi, Yong, Vestergaard, Marianne, Bertoldi, Frank, ...

We present Spitzer observations of 13 z~6 quasars using the Infrared Array Camera (IRAC) and Multiband Imaging Photometer for Spitzer (MIPS). All the quasars except SDSS J000552.34-000655.8 (SDSS...

Science with the James Webb space telescope (2006)

Gardner, Jonathan P., Mather, John C., Clampin, Mark, Doyon, Rene, Greenhouse, Matthew A., Hammel, Heidi B., ...

The scientific capabilities of the James Webb Space Telescope (JWST) fall into four themes. The End of the Dark Ages: First Light and Reionization theme seeks to identify the first luminous sources...

Warm dust and spatially variable polycyclic aromatic hydrocarbon emission in thedwarf starburst galaxy NGC 1705 (2006)

Cannon, John M., Smith, John-David T., Walter, Fabian, Bendo, George J., Calzetti, Daniela, Dale, Daniel A., ...

We present Spitzer observations of the nearby dwarf starburst galaxy NGC 1705 obtained as part of the Spitzer Infrared Nearby Galaxies Survey. The galaxy morphology is very different shortward and...

Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)

Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...

New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...

Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)

Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...

New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...

Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)

Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...

New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...

Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)

Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...

New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...

Spitzer/MIPS infrared imaging of M31 : further evidence for a spiral-ring composite structure (2006)

Gordon, Karl D., Bailin, Jeremy, Engelbracht, Charles W., Rieke, George H., Misselt, Karl A., Latter, William B., ...

New images of M31 at 24, 70, and 160 µm taken with the Multiband Imaging Photometer for Spitzer (MIPS) reveal the morphology of the dust in this galaxy. This morphology is well represented by a...

Infrared Luminosity Function of the Coma Cluster (2005)

Bai, Lei, Rieke, George H., Rieke, Marcia J., Hinz, Joannah L., Kelly, Douglas M., Blaylock, Myra

Using mid-IR and optical data, we deduce the total infrared (IR) luminosities of galaxies in the Coma cluster and present their infrared luminosity function (LF). The shape of the overall Coma IR LF...

Understanding Radio-Selected Thermal Sources in M 33: Ultraviolet, Optical, Near-Infrared, Spitzer Mid-Infrared, and Radio Observations (2005)

Buckalew, Brent A., Kobulnicky, Henry A., Darnel, Jonathan M., Polomski, Elisha, Gehrz, Robert D., Humphreys, Roberta M., ...

We present ultraviolet, optical, near-infrared, Spitzer mid-infrared, and radio images of 14 radio-selected objects in M 33. These objects are thought to represent the youngest phase of star cluster...

Spitzer view on the evolution of star-forming galaxies from z=0 to z~3 (2005)

Perez-Gonzalez, Pablo G., Rieke, George H., Egami, Eiichi, Alonso-Herrero, Almudena, Dole, Herve, Papovich, Casey, ...

We use a 24 micron selected sample containing more than 8,000 sources to study the evolution of star-forming galaxies in the redshift range from z=0 to z~3. We obtain photometric redshifts for most...

Towards an understanding of the rapid decline of the cosmic star formation rate (2005)

Bell, Eric F., Papovich, Casey, Wolf, Christian, Floc'h, Emeric Le, Caldwell, John A. R., Barden, Marco, ...

We present a first analysis of deep 24 micron observations with the Spitzer Space Telescope of a sample of nearly 1500 galaxies in a thin redshift slice, 0.65

Infrared echoes near the Supernova remnant Cassiopeia A (2005)

Krause, Oliver, Rieke, George H., Birkmann, Stephan M., Le Floc'h, Emeric, Gordon, Karl D., Egami, Eiichi, ...

Two images of Cassiopeia A obtained at 24 micrometers with the Spitzer Space Telescope over a 1-year time interval show moving structures outside the shell of the supernova remnant to a distance of...

Infrared luminosity functions from the Chandra Deep Field-South: The Spitzer view on the history of dusty star formation at 0 (2005)

Le Floc'h, Emeric, Papovich, Casey, Dole, Hervé, Bell, Eric F., Lagache, Guilaine, Rieke, George H., ...

We analyze a sample of ~2600 Spitzer MIPS 24 mum sources brighter than ~80 muJy and located in the Chandra Deep Field-South to characterize the evolution of the comoving infrared (IR) energy density...

New debris disk candidates: 24 micron stellar excesses at 100 Myr (2004)

Gorlova, Nadya, Padgett, Deborah L., Rieke, George H., Muzerolle, James, Morrison, Jane E., Engelbracht, Chad W., ...

Sixty three members of the 100 Myr old open cluster M47 (NGC 2422) have been detected at 24 micron with Spitzer. The Be star V 378 Pup shows an excess both in the near-infrared and at 24 micron...

Obscured star formation in the central region of the dwarf galaxy NGC5253 (2004)

Alonso-Herrero, Almudena, Takagi, Toshinobu, Baker, Andrew J., Rieke, George H., Rieke, Marcia J., Imanishi, Masatoshi, ...

We present HST/NICMOS observations (1.1-2.2micron) and 1.9-4.1micron spectroscopy of the central region of the dwarf galaxy NGC5253. The HST/NICMOS observations reveal the presence of a nuclear...

No cold dust within the supernova remnant Cassiopeia A (2004)

Krause, Oliver, Birkmann, Stephan M., Rieke, George H., Lemke, Dietrich, Klaas, Ulrich, Hines, Dean C., ...

A large amount (about three solar masses) of cold (18K) dust in the prototypical type II supernova remnant Cassiopeia A was recently reported. It was concluded that dust production in type II...

A Medium-Resolution Near-Infrared Spectral Library of Late Type Stars: I (2003)

Ivanov, Valentin D., Rieke, Marcia J., Engelbracht, Charles W., Alonso-Herrero, Almudena, Rieke, George H., Luhman, Kevin L.

We present an empirical infrared spectral library of medium resolution (R~2000-3000) H (1.6 micron) and K (2.2 micron) band spectra of 218 red stars, spanning a range of [Fe/H] from ~-2.2 to ~+0.3....

Gravity Indicators in the Near-Infrared Spectra of Brown Dwarfs (2003)

Gorlova, Nadya, Meyer, Michael R., Liebert, Jim, Rieke, George H.

We investigate the sensitivity to temperature and gravity of the strong absorption features in the J- and K-band spectra of substellar objects. We compare the spectra of giants and young M dwarfs (of...

Spectral Energy Distributions of Seyfert Nuclei (2003)

Alonso-Herrero, Almudena, Quillen, Alice C., Rieke, George H., Ivanov, Valentin D., Efstathiou, Andreas

We present nuclear spectral energy distributions (SEDs) in the range 0.4-16micron for an expanded CfA sample of Seyfert galaxies. The spectral indices from 1-16micron range from alpha_IR 0.9 to 3.8....

The [FeII]1.644micron emission in M82 and NGC253: Is it a measure of the supernova rate? (2002)

Alonso-Herrero, Almudena, Rieke, George H., Rieke, Marcia J., Kelly, Douglas M.

We present HST/NICMOS [FeII]1.644micron, Pa-alpha (1.87micron) and continuum images of the starburst galaxies M82 and NGC253 at an unprecedented spatial resolution. In both galaxies we detect [FeII]...

Evolution of Brown Dwarf Atmospheres: Investigating Physical Parameters from Near-IR Spectra (2002)

Gorlova, Nadya, Meyer, Michael R., Liebert, Jim, Rieke, George H.

We obtained near-infrared spectra of a sample of very low mass objects as a function of age in order to investigate the temperature and surface gravity sensitivity of several features in the J and K...

Massive Star Formation in Luminous Infrared Galaxies: Giant HII Regions and their relation to Super Star Clusters (2002)

Alonso-Herrero, Almudena, Rieke, George H., Rieke, Marcia J.

We have used HST/NICMOS H-band narrow-band Pa-alpha (at rest 1.87micron) images to identify star clusters and HII regions respectively in a sample of 8 luminous infrared galaxies (LIRGs). These...

Testing the AGN-Starburst Connection in Seyfert Galaxies (2000)

Ivanov, Valentin D., Rieke, George H., Groppi, Christopher E., Alonso-Herrero, Almudena, Rieke, Marcia J., Engelbracht, C. W.

We use the CO band at 2.3 micron to constrain the populations of young stars in the central regions of Seyfert galaxies. We report new CO band spectroscopy of 46 Seyfert galaxies. In most cases, the...

The Nature of LINERs (1999)

Alonso-Herrero, Almudena, Rieke, Marcia J., Rieke, George H., Shields, Joseph C.

We present $J$-band ($1.15-1.35 \mu$m) spectroscopy of a sample of nine galaxies showing some degree of LINER activity (classical LINERs, weak-[O {\sc i}] LINERs and transition objects), together...