The Intrinsic Properties of SMM J14011+0252

Smail, Ian; Smith, Graham P.; Ivison, R. J.

doi:10.1086/432641

Cited by 25 publications

(37 citation statements)

References 29 publications

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“…The red observed optical/near-infrared SED described by P04 could then be naturally explained by a dusty galaxy at z $ 2 3, perhaps associated with the SMGs that lie within $30 00 ($200 300 kpc in projection at z $ 2 3) of #1916 (Ivison et al 2000;Smail et al 2005).…”

Section: Is #1916 At Z $ 2-3?mentioning

confidence: 90%

Optical and Infrared Nondetection of thez= 10 Galaxy behind Abell 1835

Smith¹,

Sand²,

Egami³

et al. 2006

ApJ

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Gravitational lensing by massive galaxy clusters is a powerful tool for the discovery and study of high-redshift galaxies, including those at z ! 6 likely responsible for cosmic reionization. Pelló et al. recently used this technique to discover a candidate gravitationally magnified galaxy at z ¼ 10 behind the massive cluster lens Abell 1835 (z ¼ 0:25). We present new Keck and Spitzer Space Telescope observations of the z ¼ 10 candidate (hereafter #1916, following Pelló et al.'s nomenclature) together with a reanalysis of archival optical and near-infrared imaging from the Hubble Space Telescope and Very Large Telescope, respectively. Our analysis extends from the atmospheric cutoff at k obs ' 0:35 m out to k obs ' 5 m. The z ¼ 10 galaxy is not detected in any of these data, including an independent reduction of Pelló et al.'s discovery H-and K-band imaging. We conclude that there is no statistically reliable evidence for the existence of #1916. We also assess the implications of our results for ground-based nearinfrared searches for gravitationally magnified galaxies at z k 7. The broad conclusion is that such experiments remain feasible, assuming that space-based optical and mid-infrared imaging are available to break the degeneracy with low-redshift interlopers (e.g., z $ 2 3) when fitting spectral templates to the photometric data.

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Section: Is #1916 At Z $ 2-3?mentioning

confidence: 90%

Optical and Infrared Nondetection of thez= 10 Galaxy behind Abell 1835

Smith¹,

Sand²,

Egami³

et al. 2006

ApJ

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“…a The amplification for this source has been the subject of several papers; Downes & Solomon (2003) and Motohara et al (2005) argue that an intervening cluster galaxy boosts the amplification to $25. Smail et al (2005) and Smith et al (2005) find that the intervening galaxy is a dwarf with small velocity dispersion and thus contributes only modestly to the total amplification, which they estimate as 3.5 AE 0.5. We note the controversy and adopt the Smail et al (2005) amplification.…”

Section: Sample Selectionmentioning

confidence: 99%

“…Smail et al (2005) and Smith et al (2005) find that the intervening galaxy is a dwarf with small velocity dispersion and thus contributes only modestly to the total amplification, which they estimate as 3.5 AE 0.5. We note the controversy and adopt the Smail et al (2005) amplification.…”

Section: Sample Selectionmentioning

confidence: 99%

Mid‐Infrared Spectroscopy of Lensed Galaxies at 1 <z< 3: The Nature of Sources Near the MIPS Confusion Limit

Rigby

Marcillac

Egami

et al. 2008

ApJ

129

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We present Spitzer IRS mid-infrared spectra for 15 gravitationally lensed, 24 mYselected galaxies, and combine the results with four additional very faint galaxies with IRS spectra in the literature. The median intrinsic 24 m flux density of the sample is 130 Jy, enabling a systematic survey of the spectral properties of the very faint 24 m sources that dominate the number counts of Spitzer cosmological surveys. Six of the 19 galaxy spectra (32%) show the strong mid-IR continuua expected of AGNs; X-ray detections confirm the presence of AGNs in three of these cases, and reveal AGNs in two other galaxies. These results suggest that nuclear accretion may contribute more flux to faint 24 mYselected samples than previously assumed. Almost all the spectra show some aromatic ( PAH ) emission features; the measured aromatic flux ratios do not show evolution from z ¼ 0. In particular, the high signal-to-noise mid-IR spectrum of SMM J163554.2+661225 agrees remarkably well with low-redshift, lower luminosity templates. We compare the rest-frame 8 m and total infrared luminosities of star-forming galaxies, and find that the behavior of this ratio with total IR luminosity has evolved modestly from z ¼ 2 to z ¼ 0. Since the high aromatic-to-continuum flux ratios in these galaxies rule out a dominant contribution by AGNs, this finding implies systematic evolution in the structure and/or metallicity of infrared sources with redshift. It also has implications for the estimates of star-forming rates inferred from 24 m measurements, in the sense that at z $ 2, a given observed frame 24 m luminosity corresponds to a lower bolometric luminosity than would be inferred from low-redshift templates of similar luminosity at the corresponding rest wavelength.

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“…SMM J14011+0252 at z = 2.565 (Barger et al 1999) was discovered in the 850 μm SCUBA survey of the A1835 cluster field (Ivison et al 2000), and subsequently detected in CO J = 3-2 line emission by Frayer et al (1999). The lensing amplification factor of this source has been the subject of some debate, and may be as high as ∼25 (Downes & Solomon 2003;Motohara et al 2005;Smail et al 2005;Smith et al 2005), however, in this analysis we adopt a lower factor of 3.5 ) so as to be conservative in our derived luminosity limits in the case of a nondetection. The optical spectral characteristics of this SMG are consistent with that of a starburst galaxy (Frayer et al 1999), while the mid-IR spectrum is also consistent with no AGN being present in this SMG (Rigby et al 2008).…”

Section: Targetsmentioning

confidence: 99%

CONSTRAINTS ON THE PRESENCE OF WATER MEGAMASER EMISSION INz∼ 2.5 ULTRALUMINOUS INFRARED STARBURST GALAXIES

Wagg

Momjian

2009

The Astronomical Journal

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We present Expanded Very Large Array (EVLA) and Arecibo observations of two lensed submillimeter galaxies at z ∼ 2.5, in order to search for redshifted 22.235 GHz water megamaser emission. Both SMM J14011+0252 and SMM J16359+6612 have multi-wavelength characteristics consistent with ongoing starburst activity, as well as CO line emission indicating the presence of warm molecular gas. Our observations do not reveal any evidence for H 2 O megamaser emission in either target, while the lensing allows us to obtain deep limits to the H 2 O line luminosities, L H 2 O < 7470 L (3σ ) in the case of SMM J14011+0252, and L H 2 O < 1893 L for SMM J16359+6612, assuming line widths of 80 km s −1 . Our search for, and subsequent nondetection of, H 2 O megamaser emission in two strongly lensed starburst galaxies rich in gas and dust suggests that such megamaser emission is not likely to be common within the unlensed population of high-redshift starburst galaxies. We use the recent detection of strong H 2 O megamaser emission in the lensed quasar, MG J0414+0534 at z = 2.64 to make predictions for future EVLA C-band surveys of H 2 O megamaser emission in submillimeter galaxies hosting active galactic nuclei.

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The Intrinsic Properties of SMM J14011+0252

Cited by 25 publications

References 29 publications

Optical and Infrared Nondetection of thez= 10 Galaxy behind Abell 1835

Optical and Infrared Nondetection of thez= 10 Galaxy behind Abell 1835

Mid‐Infrared Spectroscopy of Lensed Galaxies at 1 <z< 3: The Nature of Sources Near the MIPS Confusion Limit

CONSTRAINTS ON THE PRESENCE OF WATER MEGAMASER EMISSION INz∼ 2.5 ULTRALUMINOUS INFRARED STARBURST GALAXIES

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