J/ApJ/797/138 Properties of SMG lens candidates (Calanog+, 2014) ================================================================================ Lens models of Herschel-selected galaxies from high-resolution near-IR observations. Calanog J.A., Fu H., Cooray A., Wardlow J., Ma B., Amber S., Baker A.J., Baes M., Bock J., Bourne N., Bussmann R.S., Casey C.M., Chapman S.C., Clements D.L., Conley A., Dannerbauer H., De Zotti G., Dunne L., Dye S., Eales S., Farrah D., Furlanetto C., Harris A.I., Ivison R.J., Kim S., Maddox S.J., Magdis G., Messias H., Michalowski M.J., Negrello M., Nightingale J., O'Bryan J.M., Oliver S.J., Riechers D., Scott D., Serjeant S., Simpson J., Smith M., Timmons N., Thacker C., Valiante E., Vieira J.D. =2014ApJ...797..138C (SIMBAD/NED BibCode) ================================================================================ ADC_Keywords: Gravitational lensing ; Galaxy catalogs ; Redshifts ; Millimetric/submm sources Keywords: galaxies: star formation ; gravitational lensing: strong ; submillimeter: galaxies Abstract: We present Keck-Adaptive Optics and Hubble Space Telescope high resolution near-infrared (IR) imaging for 500{mu}m bright candidate lensing systems identified by the Herschel Multi-tiered Extragalactic Survey and Herschel Astrophysical Terahertz Large Area Survey. Out of 87 candidates with near-IR imaging, 15 (~17%) display clear near-IR lensing morphologies. We present near-IR lens models to reconstruct and recover basic rest-frame optical morphological properties of the background galaxies from 12 new systems. Sources with the largest near-IR magnification factors also tend to be the most compact, consistent with the size bias predicted from simulations and previous lensing models for submillimeter galaxies (SMGs). The rest-frame optical properties of our sample of Herschel-selected lensed SMGs are consistent with those of unlensed SMGs, which suggests that the two populations are similar. Description: We have obtained Keck/NIRC2 LGS-AO imaging for Herschel-candidate lensing systems (observing runs from 2011 to 2013). Herschel-lensing candidates in the HerMES fields have also been observed as part of the HST WFC3 Cycle 19 snapshot program (PI: M. Negrello). All are observed with the F110W filter ({lambda}_c_=1.15{mu}m), using a four-point parallelogram dither pattern with point and line spacings of 0.57" and 0.36", respectively. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 61 108 Summary of high resolution data table3.dat 63 87 Observed properties of submillimeter galaxies (SMG) lens candidates -------------------------------------------------------------------------------- See also: VIII/95 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012) J/ApJ/761/140 : Spectroscopy of Herschel-SPIRE galaxies (Casey+, 2012) J/MNRAS/415/2336 : Herschel-ATLAS Science Demonstration Catalog (Rigby+, 2011) J/MNRAS/395/1695 : Spitzer MIR spectroscopy of LIRGs (Hernan-Caballero+, 2009) J/ApJ/622/772 : Redshift survey of submillimeter galaxies (Chapman+, 2005) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 29 A29 --- Name IAU Name 31- 40 A10 --- SName Short Name 42- 44 A3 --- Filt [J H K K_s K_p] Filter (1) 46 A1 --- --- [=] 48- 50 I3 --- tint [60/355] Exposure time per frame 52 A1 --- --- [x] 54- 55 I2 --- Nf [4/48] Number of independent frames 57- 60 F4.1 mag Depth [24.5/26.8] Depth (AB mag) (2) 61 A1 --- f_Depth [e] Flag on Depth (3) ------------------------------------------------------------------------------- Note (1): Filter used, defined as follows: J = HST F110W, H = Keck H-band, K_s = Keck Ks band, K = Keck K-band, K_p = Keck Kp-band. Note (2): 5{sigma} point-source depth calculated using the specifications outlined in Sections 2.2 and 2.3. Note (3): A "e" indicates that the depth is calculated using average zero point ({Delta}m_zpt_=0.4) due to the absence of a suitable point source in the frame. -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 10 A10 --- SName Short Name 12- 14 I3 mJy S250 [0/778] Herschel SPIRE 250{\mu}m flux density (1) 16- 18 I3 mJy S350 [47/467] Herschel SPIRE 350{\mu}m flux density (1) 20- 22 I3 mJy S500 [24/295] Herschel SPIRE 500{\mu}m flux density (1) 24- 27 F4.1 mJy S880 [18.4/90]? SMA 880{\mu}m flux density (2) 29- 33 F5.3 --- zs [1.026/4.45]? Background source redshift 35 A1 --- f_zs [c] Flag on zs (3) 37- 44 A8 --- r_zs Reference for zs (4) 46- 50 F5.3 --- zlens [0.16/1.35]? Foreground source redshift 52- 59 A8 --- r_zlens Reference for zlens (4) 60 A1 --- f_zlens [d] Flag on zlens (5) 62- 63 A2 --- Grade Lens grade (6) ------------------------------------------------------------------------------- Note (1): Typical errors, which include confusion and instrumental noise on SPIRE photometry, are 7-10mJy (Smith et al. 2012, J/MNRAS/419/377), which includes both statistical and confusion noise. Note (2): S880 is only available for sources that overlap with the sample from Bussmann et al. (2013ApJ...779...25B). Typical errors for the Sub-Millimeter Array (SMA) photometry are ~15% of the measured S880 value. Note (3): A "c" indicates a single line redshift measurement, using CO observations. Note (4): Reference key for the zs and zlens redshifts, defined as follows: W13 = Wardlow et al. (2013ApJ...762...59W); B13 = Bussmann et al. (2013ApJ...779...25B); R14 = D. A. Riechers et al. (in preparation), M14 = Messias et al. (2014A&A...568A..92M); O13 = Omont et al. (2013A&A...551A.115O); C11 = Cox et al. (2011ApJ...740...63C); H12 = Harris et al. (2012ApJ...752..152H); H14 = A. I. Harris et al. (in preparation); I13 = Ivison et al. (2013ApJ...772..137I); R11 = Riechers et al. (2011ApJ...733L..12R); S11 = Scott et al. (2011ApJ...733...29S); O08 = Oyaizu et al. (2008ApJ...674..768O); K13 = M. Krips et al. (in preparation); G13 = George et al. (2013MNRAS.436L..99G); L14 = R. E. Lupu et al. (in preparation); B06 = Borys et al. (2006ApJ...636..134B). Note (5): A "d" indicates the lens redshift is based on Keck/LRIS observations, H. Fu et al. (in preparation). Note (6): Lens Grade is the priority value assigned to the lensed candidate, discussed in Section 3. Table 2: Grading rubric summary for lensed SMGs ------------------------------------------------------ NIR Lens SMG and Lens SMG only Lens only Neither Morphology Redshift Redshift Redshift ------------------------------------------------------ Obvious A1 A2 A3 A4 Marginal B1 B2 B3 B4 None C1 C2 C3 C4 ------------------------------------------------------ -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Marianne Brouty [CDS] 11-May-2016