- ID:
- ivo://CDS.VizieR/J/ApJS/109/45
- Title:
- Kitt Peak galaxy redshift survey
- Short Name:
- J/ApJS/109/45
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Redshifts, four-band photometry (U B_J_ R_F_ I_N_), and astrometry are presented for faint galaxies in four widely separated fields. We provide the necessary information to enable well-defined, statistically complete subsamples of faint galaxies to be constructed from the master catalog. The redshift survey is 86% and 71% complete to R_F_<=18.5 and R_F<=19, respectively, yielding 328 galaxies with reliable redshifts to R_F_<=19, with a median redshift of 0.142. Adding the galaxies from the fainter statistical sample yields a total of 583 reliable redshifts with a median redshift of 0.202. An additional 156 redshifts in the same fields, but not part of the samples defined here, are also given. Of the 739 galaxy redshifts presented, 212 are for galaxies with R_F_>20.
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Search Results
- ID:
- ivo://CDS.VizieR/J/MNRAS/467/1965
- Title:
- KMOS Redshift One Spectroscopic Survey
- Short Name:
- J/MNRAS/467/1965
- Date:
- 15 Dec 2021 07:09:48
- Publisher:
- CDS
- Description:
- We present dynamical measurements for 586 H{alpha}-detected star-forming galaxies from the KMOS (K-band Multi-Object Spectrograph) Redshift One Spectroscopic Survey (KROSS). The sample represents typical star-forming galaxies at this redshift (z=0.6-1.0), with a median star formation rate of ~=7M_{sun}_/yr and a stellar mass range of log(M*_[M_{sun}_])~9-11. We find that the rotation velocity-stellar mass relationship (the inverse of the Tully-Fisher relationship) for our rotationally dominated sources (v_C_/{sigma}_0_>1) has a consistent slope and normalization as that observed for z=0 discs. In contrast, the specific angular momentum (j*; angular momentum divided by stellar mass) is ~=0.2-0.3dex lower on average compared to z=0 discs. The specific angular momentum scales as j_s_{prop.to}M*^0.6+/-0.2^, consistent with that expected for dark matter (i.e. j_DM_{prop.to} M_DM_^2/3^). We find that z~=0.9 star-forming galaxies have decreasing specific angular momentum with increasing Sersic index. Visually, the sources with the highest specific angular momentum, for a given mass, have the most disc-dominated morphologies. This implies that an angular momentum-mass-morphology relationship, similar to that observed in local massive galaxies, is already in place by z~=1.
- ID:
- ivo://CDS.VizieR/J/MNRAS/474/5076
- Title:
- KMOS Redshift One Spectroscopic Survey
- Short Name:
- J/MNRAS/474/5076
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We analyse the velocity dispersion properties of 472 z~0.9 star-forming galaxies observed as part of the KMOS Redshift One Spectroscopic Survey (KROSS). The majority of this sample is rotationally dominated (83+/-5 per cent with vC/{sigma}0>1) but also dynamically hot and highly turbulent. After correcting for beam smearing effects, the median intrinsic velocity dispersion for the final sample is {sigma}0=43.2+/-0.8km/s with a rotational velocity to dispersion ratio of vC/{sigma}0=2.6+/-0.1. To explore the relationship between velocity dispersion, stellar mass, star formation rate, and redshift, we combine KROSS with data from the SAMI survey (z~0.05) and an intermediate redshift MUSE sample (z~0.5). Whilst there is, at most, a weak trend between velocity dispersion and stellar mass, at fixed mass there is a strong increase with redshift. At all redshifts, galaxies appear to follow the same weak trend of increasing velocity dispersion with star formation rate. Our results are consistent with an evolution of galaxy dynamics driven by discs that are more gas rich, and increasingly gravitationally unstable, as a function of increasing redshift. Finally, we test two analytic models that predict turbulence is driven by either gravitational instabilities or stellar feedback. Both provide an adequate description of the data, and further observations are required to rule out either model.
- ID:
- ivo://CDS.VizieR/J/A+A/594/A77
- Title:
- KMOS star-forming galaxies Halpha data cubes
- Short Name:
- J/A+A/594/A77
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The study of the evolution of star-forming galaxies requires the determination of accurate kinematics and scaling relations out to high redshift. In this paper we select a sample of 18 galaxies at z~1, observed in the H{alpha} emission-line with KMOS, to derive accurate kinematics using a novel 3D analysis technique. We use the new code 3DBarolo that models the galaxy emission directly in the 3D observational space, without the need to extract kinematic maps. This technique's major advantage is that it is not affected by beam smearing and thus it enables the determination of rotation velocity and intrinsic velocity dispersion, even at low spatial resolution. We find that: 1) the rotation curves of these z~1 galaxies rise very steeply within few kiloparsecs and remain flat out to the outermost radius and 2) the H{alpha} velocity dispersions are low, ranging from 15 to 40km/s, which leads to V/{sigma}=3-10. These characteristics are similar to those of disc galaxies in the local Universe. Finally, we also report no significant evolution of the stellar-mass Tully-Fisher relation. Our results show that disc galaxies are kinematically mature and rotation-dominated already at z~1.
- ID:
- ivo://CDS.VizieR/J/A+A/597/A134
- Title:
- Kohonen selected E+A galaxies from SDSS DR7
- Short Name:
- J/A+A/597/A134
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We created and analysed a large sample of local (z<0.4) post-starburst (PSB) galaxies. In the colour-mass diagram, the PSB sample is clearly concentrated towards the region between the red and the blue cloud, in agreement with the idea that PSB galaxies represent the transitioning phase between actively and passively evolving galaxies. The relative frequency of distorted PSB galaxies is at least 57%, significantly higher than in a comparison sample. The search for active galactic nuclei (AGN) based on conventional selection criteria in the radio and MIR results in a low AGN fraction of 2-3%. We confirm an MIR excess in the mean SED of the PSB galaxy sample that may indicate hidden AGNs, though other sources are also possible.
- ID:
- ivo://CDS.VizieR/J/ApJ/579/93
- Title:
- KPNO/Deeprange distant cluster survey
- Short Name:
- J/ApJ/579/93
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have conducted an automated search for galaxy clusters within a contiguous 16deg^2^ I-band survey in the north Galactic hemisphere. A matched filter detection algorithm identifies 444 cluster candidates in the range 0.2<~z<~1.2. The full catalog is presented along with the results from a follow-up spectroscopic survey.
- ID:
- ivo://CDS.VizieR/J/A+A/392/395
- Title:
- Ks-band magnitudes of the K20 sample
- Short Name:
- J/A+A/392/395
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The K20 survey is an ESO VLT optical and near-infrared spectroscopic survey aimed at obtaining spectral information and redshifts of a complete sample of about 550 objects to K_s_<=20.0 over two independent fields with a total area of 52arcmin^2^. In this paper we discuss the scientific motivation of such a survey, we describe the photometric and spectroscopic properties of the sample, and we release the K_s_-band photometric catalog. Extensive simulations showed that the sample is photometrically highly complete to K_s_=20. The observed galaxy counts and the R-K_s_ color distribution are consistent with literature results. We observed spectroscopically 94% of the sample, reaching a spectroscopic redshift identification completeness of 92% to K_s_<=20.0 for the observed targets, and of 87% for the whole sample (i.e. counting also the unobserved targets). Deep spectroscopy was complemented with multi-band deep imaging in order to derive tested and reliable photometric redshifts for the galaxies lacking of spectroscopic redshifts. The results show a very good agreement between the spectroscopic and the photometric redshifts with <z_(spe)_-z_(phot)_>=0.01 and with a dispersion of {sigma}_({Delta}z)_=0.09. Using both the spectroscopic and the photometric redshifts, we reached an overall redshift completeness of about 98%. The size of the sample, the redshift completeness, the availability of high quality photometric redshifts and multicolor spectral energy distributions make the K20 survey database one of the most complete samples available to date for constraining the currently competing scenarios of galaxy formation and for a variety of other galaxy evolution studies.
- ID:
- ivo://CDS.VizieR/J/A+A/437/883
- Title:
- K20 survey: spectroscopic catalogue
- Short Name:
- J/A+A/437/883
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The K20 survey is a near infrared-selected, deep (Ks<20) redshift survey targeting galaxies in two independent regions of the sky, the Chandra Deep Field South and the field around the quasar 0055-2659, for a total area of 52arcmin^2^. The total Ks-selected sample includes 545 objects. Low-resolution (R~300-600) optical spectra for 525 of them have been obtained with the FORS1/FORS2 spectrographs at the ESO/VLT, providing 501 spectroscopic identifications (including 12 type-1 AGN and 45 stars); consequently, we were able to measure redshifts and identify stars in 96% of the observed objects, whereas the spectroscopic completeness with respect to the total photometrically selected sample is 92% (501/545). The K20 survey is therefore the most complete spectroscopic survey of a near infrared-selected sample to date. The K20 survey contains 444 spectroscopically identified galaxies, covering a redshift range of 0.05<z<2.73, with a mean redshift <z>=0.75; excluding the 32 "low-quality" redshifts does not significantly change these values.
- ID:
- ivo://CDS.VizieR/J/other/PNAOJ/5.75
- Title:
- KUG survey, second series. I
- Short Name:
- J/other/PNAOJ/5.
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalogue list of ultraviolet(UV)-excess galaxies (KUG) which have been detected on two-color Kiso Schmidt plates is presented for the 10 Schmidt fields. Catalogued are 341 objects, down to the photographic magnitude 17 in the sky area of some 300 square degrees. (Errata listed in the paper II of this series, 2000PNAOJ...6....1M, are corrected.)
- ID:
- ivo://CDS.VizieR/J/other/PNAOJ/6.1
- Title:
- KUG survey, second series. II
- Short Name:
- J/other/PNAOJ/6.
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalogue list of ultraviolet(UV)-excess galaxies (KUG) which have been detected on two-color Kiso Schmidt plates is presented for the 10 Schmidt fields. Catalogued are 644 objects, down to the photographic magnitude 17 in the sky area of some 300 square degrees.
