We present multi-waveband optical imaging data obtained from observations of the Subaru/XMM-Newto... more We present multi-waveband optical imaging data obtained from observations of the Subaru/XMM-Newton Deep Survey (SXDS). The survey field, centered at R.A. = 02 h 18 m 00 s, decl. = −05 ◦ 00 ′ 00 ′ ′ , has been the focus of a wide range of multi-wavelength observing programs spanning from X-ray to radio wavelengths. A large part of the optical imaging observations are carried out with Suprime-Cam on Subaru Telescope at Mauna Kea in the course of Subaru Telescope “Observatory Projects”. This paper describes our optical observations, data reduction and analysis procedures employed, and the characteristics of the data products. A total area of 1.22 deg 2 is covered in five contiguous
ABSTRACT New wide-field optical (BVI) imaging of a complete sample of luminous infrared galaxies ... more ABSTRACT New wide-field optical (BVI) imaging of a complete sample of luminous infrared galaxies (LIGs) with log LIR 11.1 - 11.9 from the all sky IRAS Revised Bright Galaxy Sample show that all LIGs above log LIR = 11.5 have tidal tails and isophotal distortions characteristic of mergers. By sampling the transition region between the highest luminosity normal galaxies and ultraluminous infrared galaxies (ULIGs: log LIR >12.0), over 90% of which are advanced mergers, we confirm that IR luminous merger systems are dominated by pairs of disk galaxies with a combined luminosity of 2.5 L* in B-band. The systematic decrease in nuclear separation with increasing LIR and the continuity and homogeneity of global photometric properties of LIGs and ULIGs suggests that changes in the properties of LIGs as a function of LIR above log LIR 11.5 are largely due to changes along a merger time sequence for pairs of molecular gas-rich galaxies. Below log LIR 11.5, we find a small contribution from isolated disk galaxies representing the bright tail in the IR luminosity distribution of normal galaxies, and a distinct population of smaller isolated disk galaxies.
A complete sample of over 200 luminous infrared galaxies (LIRGs; Lir > 101... more A complete sample of over 200 luminous infrared galaxies (LIRGs; Lir > 1011 LSun) and ultraluminous infrared galaxies (ULIRGs; Lir > 1012 LSun) selected from the IRAS Revised Bright Galaxy Sample (60 micron flux density > 5.24 Jy) is being investigated using the full imaging capabilities of the Spitzer Space Telescope. The superb sensitivity and spatial resolution of IRAC and
We have completed a deep wide-field optical B, V, and I- band imaging survey of a complete sample... more We have completed a deep wide-field optical B, V, and I- band imaging survey of a complete sample of 56 luminous infrared galaxies (LIGs) with log( LIR/ L&sun; ) 11.10 11.99 to understand the crucial transition in the infrared luminosity function between normal star forming disk galaxies and ultraluminous infrared galaxies (ULIGs; log(LIR/ L&sun; ) > 12.0). We find that
Bulletin of the American Astronomical Society, May 1, 2001
Deep V-band imaging and optical color maps from B,V,R and I-band images have been obtained for a ... more Deep V-band imaging and optical color maps from B,V,R and I-band images have been obtained for a complete sample of 56 luminous infrared galaxies (LIGs: LIR = 1011}-10{12 Lsun) drawn from the IRAS Revised Bright Galaxy Survey. These data have been combined with new and published multiwavelength data from the literature (e.g. CO(1-0), K-band images, optical spectra, VLA continuum images, HI 21cm-line) in order to characterize the morphology and star formation properties of LIGs. We find clear evidence for an increasing fraction of strongly interacting/merger pairs of large, relatively equal mass ( ~ L*), molecular gas-rich spirals with increasing LIR. At LIR < 1011.3 Lsun interactions involving small mass companions dominate, while at higher luminosities interactions involving spiral pairs with mass ratios < 3:1 are most common. There appears to be a weak trend of decreasing nuclear separation with increasing LIR. Fifty percent of LIGs have HII optical spectra, 17% are LINERs, an 34% are Seyferts. There are no obvious trends as a function of LIR. Millimeterwave interferometry coupled with (R-K) aperture photometry suggests large concentrations of molecular gas within the central few kiloparsecs of the merger systems. Comparison of our results with similar existing data for a complete sample of ultraluminous infrared galaxies (LIR > 1012 Lsun) suggests that a substantial fraction of LIGs with LIR > 1011.3 Lsun may eventually pass through a ULIG phase.
We have completed a deep wide-field optical B, V, and I- band imaging survey of a complete sample... more We have completed a deep wide-field optical B, V, and I- band imaging survey of a complete sample of 56 luminous infrared galaxies (LIGs) with log( LIR/ L&sun; ) 11.10 11.99 to understand the crucial transition in the infrared luminosity function between normal star forming disk galaxies and ultraluminous infrared galaxies (ULIGs; log(LIR/ L&sun; ) > 12.0). We find that
ABSTRACT In order to interpret observations of luminous infrared/sub-mm galaxies and AGNs at high... more ABSTRACT In order to interpret observations of luminous infrared/sub-mm galaxies and AGNs at high redshifts, and to study their evolution from the earliest epochs of star formation to the present, it is important to construct a comprehensive understanding of the properties of objects that are thought to be the closest analogs in the local Universe. These are the luminous infrared galaxies (LIRGs, Lir&gt;1011L⊙) and ultraluminous infrared galaxies (ULIRGs, Lir&gt;1012L⊙) identified in the IRAS survey. The IRAS Revised Bright Galaxy Sample (RBGS; [1]) is a complete sample of extragalactic objects with total 60μm flux density &gt;5.24Jy, covering the entire sky surveyed by IRAS at Galactic latitudes |b|&gt;5 degrees. The 629 objects in the RBGS have a median redshift of 0.0082, and their visual and near-infrared properties span a wide range from normal, isolated gas-rich spirals at low luminosities (Lir&lt;1010.5L⊙) through an increasing fraction of interacting galaxy pairs and ongoing mergers powered by enhanced star formation and AGNs among the LIRGs and ULIRGs. There are 22 ULIRGs (3.5%) and 180 LIRGs (29%) in the RBGS, making this an ideal sample for detailed study and comparison with observations of high-redshift galaxies. A primary goal of this study is to delineate the transformations that occur in basic properties as galaxies evolve from separate disks through the interaction and merger sequence, and possibly into elliptical galaxies.
We present new Spitzer data on the nearby barred-spiral galaxy NGC 1365, observed as part of the ... more We present new Spitzer data on the nearby barred-spiral galaxy NGC 1365, observed as part of the medium-sized LIRG Spitzer survey of Mazzarella et al.. NGC 1365 was imaged in the four IRAC bands: 3.6, 4.5, 5.8 and 8.0um and in the three MIPS bands: 24, 70, and 160um. While the 160um data suffer saturation in the nuclear region, in
A complete sample of over 200 luminous infrared galaxies (LIRGs; Lir &amp;amp;amp;amp;gt; 101... more A complete sample of over 200 luminous infrared galaxies (LIRGs; Lir &amp;amp;amp;amp;gt; 1011 LSun) and ultraluminous infrared galaxies (ULIRGs; Lir &amp;amp;amp;amp;gt; 1012 LSun) selected from the IRAS Revised Bright Galaxy Sample (60 micron flux density &amp;amp;amp;amp;gt; 5.24 Jy) is being investigated using the full imaging capabilities of the Spitzer Space Telescope. The superb sensitivity and spatial resolution of IRAC and
We present multi-waveband optical imaging data obtained from observations of the Subaru/XMM-Newto... more We present multi-waveband optical imaging data obtained from observations of the Subaru/XMM-Newton Deep Survey (SXDS). The survey field, centered at R.A. = 02 h 18 m 00 s, decl. = −05 ◦ 00 ′ 00 ′ ′ , has been the focus of a wide range of multi-wavelength observing programs spanning from X-ray to radio wavelengths. A large part of the optical imaging observations are carried out with Suprime-Cam on Subaru Telescope at Mauna Kea in the course of Subaru Telescope “Observatory Projects”. This paper describes our optical observations, data reduction and analysis procedures employed, and the characteristics of the data products. A total area of 1.22 deg 2 is covered in five contiguous
ABSTRACT New wide-field optical (BVI) imaging of a complete sample of luminous infrared galaxies ... more ABSTRACT New wide-field optical (BVI) imaging of a complete sample of luminous infrared galaxies (LIGs) with log LIR 11.1 - 11.9 from the all sky IRAS Revised Bright Galaxy Sample show that all LIGs above log LIR = 11.5 have tidal tails and isophotal distortions characteristic of mergers. By sampling the transition region between the highest luminosity normal galaxies and ultraluminous infrared galaxies (ULIGs: log LIR &gt;12.0), over 90% of which are advanced mergers, we confirm that IR luminous merger systems are dominated by pairs of disk galaxies with a combined luminosity of 2.5 L* in B-band. The systematic decrease in nuclear separation with increasing LIR and the continuity and homogeneity of global photometric properties of LIGs and ULIGs suggests that changes in the properties of LIGs as a function of LIR above log LIR 11.5 are largely due to changes along a merger time sequence for pairs of molecular gas-rich galaxies. Below log LIR 11.5, we find a small contribution from isolated disk galaxies representing the bright tail in the IR luminosity distribution of normal galaxies, and a distinct population of smaller isolated disk galaxies.
A complete sample of over 200 luminous infrared galaxies (LIRGs; Lir &amp;amp;amp;amp;gt; 101... more A complete sample of over 200 luminous infrared galaxies (LIRGs; Lir &amp;amp;amp;amp;gt; 1011 LSun) and ultraluminous infrared galaxies (ULIRGs; Lir &amp;amp;amp;amp;gt; 1012 LSun) selected from the IRAS Revised Bright Galaxy Sample (60 micron flux density &amp;amp;amp;amp;gt; 5.24 Jy) is being investigated using the full imaging capabilities of the Spitzer Space Telescope. The superb sensitivity and spatial resolution of IRAC and
We have completed a deep wide-field optical B, V, and I- band imaging survey of a complete sample... more We have completed a deep wide-field optical B, V, and I- band imaging survey of a complete sample of 56 luminous infrared galaxies (LIGs) with log( LIR/ L&amp;sun; ) 11.10 11.99 to understand the crucial transition in the infrared luminosity function between normal star forming disk galaxies and ultraluminous infrared galaxies (ULIGs; log(LIR/ L&amp;sun; ) &gt; 12.0). We find that
Bulletin of the American Astronomical Society, May 1, 2001
Deep V-band imaging and optical color maps from B,V,R and I-band images have been obtained for a ... more Deep V-band imaging and optical color maps from B,V,R and I-band images have been obtained for a complete sample of 56 luminous infrared galaxies (LIGs: LIR = 1011}-10{12 Lsun) drawn from the IRAS Revised Bright Galaxy Survey. These data have been combined with new and published multiwavelength data from the literature (e.g. CO(1-0), K-band images, optical spectra, VLA continuum images, HI 21cm-line) in order to characterize the morphology and star formation properties of LIGs. We find clear evidence for an increasing fraction of strongly interacting/merger pairs of large, relatively equal mass ( ~ L*), molecular gas-rich spirals with increasing LIR. At LIR < 1011.3 Lsun interactions involving small mass companions dominate, while at higher luminosities interactions involving spiral pairs with mass ratios < 3:1 are most common. There appears to be a weak trend of decreasing nuclear separation with increasing LIR. Fifty percent of LIGs have HII optical spectra, 17% are LINERs, an 34% are Seyferts. There are no obvious trends as a function of LIR. Millimeterwave interferometry coupled with (R-K) aperture photometry suggests large concentrations of molecular gas within the central few kiloparsecs of the merger systems. Comparison of our results with similar existing data for a complete sample of ultraluminous infrared galaxies (LIR > 1012 Lsun) suggests that a substantial fraction of LIGs with LIR > 1011.3 Lsun may eventually pass through a ULIG phase.
We have completed a deep wide-field optical B, V, and I- band imaging survey of a complete sample... more We have completed a deep wide-field optical B, V, and I- band imaging survey of a complete sample of 56 luminous infrared galaxies (LIGs) with log( LIR/ L&sun; ) 11.10 11.99 to understand the crucial transition in the infrared luminosity function between normal star forming disk galaxies and ultraluminous infrared galaxies (ULIGs; log(LIR/ L&sun; ) > 12.0). We find that
ABSTRACT In order to interpret observations of luminous infrared/sub-mm galaxies and AGNs at high... more ABSTRACT In order to interpret observations of luminous infrared/sub-mm galaxies and AGNs at high redshifts, and to study their evolution from the earliest epochs of star formation to the present, it is important to construct a comprehensive understanding of the properties of objects that are thought to be the closest analogs in the local Universe. These are the luminous infrared galaxies (LIRGs, Lir&gt;1011L⊙) and ultraluminous infrared galaxies (ULIRGs, Lir&gt;1012L⊙) identified in the IRAS survey. The IRAS Revised Bright Galaxy Sample (RBGS; [1]) is a complete sample of extragalactic objects with total 60μm flux density &gt;5.24Jy, covering the entire sky surveyed by IRAS at Galactic latitudes |b|&gt;5 degrees. The 629 objects in the RBGS have a median redshift of 0.0082, and their visual and near-infrared properties span a wide range from normal, isolated gas-rich spirals at low luminosities (Lir&lt;1010.5L⊙) through an increasing fraction of interacting galaxy pairs and ongoing mergers powered by enhanced star formation and AGNs among the LIRGs and ULIRGs. There are 22 ULIRGs (3.5%) and 180 LIRGs (29%) in the RBGS, making this an ideal sample for detailed study and comparison with observations of high-redshift galaxies. A primary goal of this study is to delineate the transformations that occur in basic properties as galaxies evolve from separate disks through the interaction and merger sequence, and possibly into elliptical galaxies.
We present new Spitzer data on the nearby barred-spiral galaxy NGC 1365, observed as part of the ... more We present new Spitzer data on the nearby barred-spiral galaxy NGC 1365, observed as part of the medium-sized LIRG Spitzer survey of Mazzarella et al.. NGC 1365 was imaged in the four IRAC bands: 3.6, 4.5, 5.8 and 8.0um and in the three MIPS bands: 24, 70, and 160um. While the 160um data suffer saturation in the nuclear region, in
A complete sample of over 200 luminous infrared galaxies (LIRGs; Lir &amp;amp;amp;amp;gt; 101... more A complete sample of over 200 luminous infrared galaxies (LIRGs; Lir &amp;amp;amp;amp;gt; 1011 LSun) and ultraluminous infrared galaxies (ULIRGs; Lir &amp;amp;amp;amp;gt; 1012 LSun) selected from the IRAS Revised Bright Galaxy Sample (60 micron flux density &amp;amp;amp;amp;gt; 5.24 Jy) is being investigated using the full imaging capabilities of the Spitzer Space Telescope. The superb sensitivity and spatial resolution of IRAC and
Uploads
Papers