- ID:
- ivo://CDS.VizieR/J/ApJ/689/687
- Title:
- GOODS-N spectroscopic survey
- Short Name:
- J/ApJ/689/687
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a table of redshifts for 2907 galaxies and stars in the 145arcmin^2^ HST ACS GOODS-North, making this the most spectroscopically complete redshift sample obtained to date in a field of this size. We also include the redshifts, where available, in a table containing just under 7000 galaxies from the ACS area with K_s,AB_<24.5 measured from a deep K_s_ image obtained with WIRCam on the CFHT, as well as in a table containing 1016 sources with NUV_AB_<25 and 478 sources with FUV_AB_<25.5 (there is considerable overlap) measured from the deep GALEX images in the ACS area. Finally, we include the redshifts, where available, in a table containing the 1199 24um sources to 80uJy measured from the wider area Spitzer GOODS-North. The redshift identifications are greater than 90% complete to magnitudes of F435W_AB_=24.5, F850LP_AB_=23.3, and K_s,AB_=21.5, and to 24um fluxes of 250uJy. An extensive analysis of these data appear in a companion paper, but here we test the efficiency of color-selection techniques to identify populations of high-redshift galaxies and active galactic nuclei. We also examine the feasibility of doing tomography of the intergalactic medium with a 30m telescope.
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- ID:
- ivo://CDS.VizieR/J/A+A/434/53
- Title:
- GOODS-South Field redshifts
- Short Name:
- J/A+A/434/53
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the first results of the ESO/GOODS program of spectroscopy of faint galaxies in the Chandra Deep Field South (CDF-S). 399 spectra of 303 unique targets have been obtained in service mode with the FORS2 spectrograph at the ESO/VLT, providing 234 redshift determinations (the median of the redshift distribution is at 1.04). The typical redshift uncertainty is estimated to be sigma_z_~0.001. Galaxies have been color selected in a way that the resulting redshift distribution typically spans from z=0.5 to 2. The reduced spectra and the derived redshifts are released to the community through the ESO web page http://www.eso.org/science/goods/
- ID:
- ivo://CDS.VizieR/J/A+A/454/423
- Title:
- GOODS-South Field VLT/FORS2 redshifts. II.
- Short Name:
- J/A+A/454/423
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the second results of the ESO/GOODS program of spectroscopy of faint galaxies in the Chandra Deep Field South (CDF-S). The typical redshift uncertainty is estimated to be sigma_z_~0.001. The reduced spectra and the derived redshifts are released to the community through the ESO web page http://www.eso.org/science/goods/
- ID:
- ivo://CDS.VizieR/J/A+A/478/83
- Title:
- GOODS-South Field VLT/FORS2 redshifts. III.
- Short Name:
- J/A+A/478/83
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the third results (including the previous two releases) of the ESO/GOODS program of spectroscopy of faint galaxies in the Chandra Deep Field South (CDF-S). The typical redshift uncertainty is estimated to be {sigma}z~0.001. The reduced spectra and the derived redshifts are released to the community through the ESO web page http://www.eso.org/science/goods/
- ID:
- ivo://CDS.VizieR/J/ApJ/801/97
- Title:
- GOODS-S & UDS stellar mass catalogs from CANDELS
- Short Name:
- J/ApJ/801/97
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the public release of the stellar mass catalogs for the GOODS-S and UDS fields obtained using some of the deepest near-IR images available, achieved as part of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey project. We combine the effort from 10 different teams, who computed the stellar masses using the same photometry and the same redshifts. Each team adopted their preferred fitting code, assumptions, priors, and parameter grid. The combination of results using the same underlying stellar isochrones reduces the systematics associated with the fitting code and other choices. Thanks to the availability of different estimates, we can test the effect of some specific parameters and assumptions on the stellar mass estimate. The choice of the stellar isochrone library turns out to have the largest effect on the galaxy stellar mass estimates, resulting in the largest distributions around the median value (with a semi interquartile range larger than 0.1dex). On the other hand, for most galaxies, the stellar mass estimates are relatively insensitive to the different parameterizations of the star formation history. The inclusion of nebular emission in the model spectra does not have a significant impact for the majority of galaxies (less than a factor of 2 for ~80% of the sample). Nevertheless, the stellar mass for the subsample of young galaxies (age <100Myr), especially in particular redshift ranges (e.g., 2.2<z<2.4, 3.2<z<3.6, and 5.5<z<6.5), can be seriously overestimated (by up to a factor of 10 for <20Myr sources) if nebular contribution is ignored.
- ID:
- ivo://CDS.VizieR/J/ApJS/224/4
- Title:
- GOSSS III. 142 additional O-type systems
- Short Name:
- J/ApJS/224/4
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- This is the third installment of the Galactic O-Star Spectroscopic Survey (GOSSS), a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R~2500 digital observations selected from the Galactic O-Star Catalog. In this paper, we present 142 additional stellar systems with O stars from both hemispheres, bringing the total of O-type systems published within the project to 590. Among the new objects, there are 20 new O stars. We also identify 11 new double-lined spectroscopic binaries, 6 of which are of O+O type and 5 of O+B type, and an additional new tripled-lined spectroscopic binary of O+O+B type. We also revise some of the previous GOSSS classifications, present some egregious examples of stars erroneously classified as O-type in the past, introduce the use of luminosity class IV at spectral types O4-O5.5, and adapt the classification scheme to the work of Arias et al.
- ID:
- ivo://CDS.VizieR/J/A+A/532/A54
- Title:
- GRAMS carbon-star model grid
- Short Name:
- J/A+A/532/A54
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Synthetic spectra and photometry for the GRAMS carbon-star set of radiative transfer models is provided in FITS form. Also included are various stellar and dust shell parameters related to the models. For each model, a 130-wavelength spectrum for the bare photosphere and one for the star+dust spectrum are available. The fluxes are in F_nu (Jansky) and are computed at the LMC distance (distance modulus = 18.5mag). Synthetic photometry is computed for 34 narrow- and broad-band filters which, in order, are: U, B, V, I, J, H, Ks, IRAC3_6, IRAC4_5, IRAC5_8, IRAC8_0, MIPS24, MIPS70, MIPS160, AKARIN2, AKARIN3, AKARIN4, AKARIS7, AKARIS9W, AKARIS11, AKARIL15, AKARIL18W, AKARIL24, WISEW1, WISEW2, WISEW3 and WISEW4 (see the footnotes in the article for more about these filters). Please read the FITS header for more information on the data.
- ID:
- ivo://CDS.VizieR/J/A+A/557/A18
- Title:
- GRB 120815A afterglow spectra
- Short Name:
- J/A+A/557/A18
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the discovery of molecular hydrogen (H_2_), including the presence of vibrationally-excited H_2^*^_ in the optical spectrum of the afterglow of GRB 120815A at z=2.36 obtained with X-shooter at the VLT. Simultaneous photometric broad-band data from GROND and X-ray observations by Swift/XRT place further constraints on the amount and nature of dust along the sightline. The galactic environment of GRB 120815A is characterized by a strong DLA with would allow statistical studies, and, coupled with host follow-up and sub-mm spectroscopy, provide unprecedented insights into the process and conditions of star-formation at high redshift.
- ID:
- ivo://CDS.VizieR/J/A+A/564/A38
- Title:
- GRB 120327A afterglow VLT/X-shooter spectroscopy
- Short Name:
- J/A+A/564/A38
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a study of the environment of the Swift long gamma-ray burst GRB 120327A at z~2.8 through optical spectroscopy of its afterglow. We analyzed medium-resolution, multi-epoch spectroscopic observations (R~7000-12000, corresponding to ~15-23km/s, S/N=15-30 and wavelength range 3000-25000{AA}) of the optical afterglow of GRB 120327A, taken with X-shooter at the VLT 2.13 and 27.65hr after the GRB trigger.
- ID:
- ivo://CDS.VizieR/J/A+A/646/A50
- Title:
- GRB 190829A/SN 2019oyw spectra
- Short Name:
- J/A+A/646/A50
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Gamma-ray burst (GRB) 190829A (z=0.0785) was detected by Fermi and Swift and also at very high energy (VHE) by the High-Energy Stereoscopic System (H.E.S.S.) telescopes. The prompt emission displayed two emission episodes separated by a quiescent gap of ~40s. We present the 10.4m Gran Telescopio CANARIAS (GTC) observations of the afterglow of GRB 190829A and its underlying supernova. We also compare GRB190829A to GRB180728A, a GRB with similar behaviour, and discuss the implications on underlying physical mechanisms producing these two GRBs. We present multi-band photometric data along with spectroscopic follow-up observations taken with the 10.4m GTC telescope. Together with the data from the prompt emission, the 10.4m GTC data are used to understand the emission mechanisms and possible progenitor. A detailed analysis of the multi-band observations of the afterglow requires the cooling frequency to pass between the optical and X-ray bands at early epochs. The afterglow then transitions to the underlying supernova (SN) 2019oyw, which dominates later on. Although the prompt emission temporal properties of GRB 190829A and GRB 180728A are similar, the two pulses are different in the spectral domain. We find that SN 2019oyw associated with GRB 190829A is powered by Ni decay and is a Type Ic-BL SN. The spectroscopic and photometric properties of this SN are consistent with those observed for SN 1998bw, but evolved earlier.