J/MNRAS/503/1753 z∼1 star-forming galaxies catalog (Sharma+, 2021)
Flat rotation curves of z ∼ 1 star-forming galaxies.
Sharma G., Salucci P., Harrison C.M., Van De Ven G., Lapi A.
<Mon. Not. R. Astron. Soc., 503, 1753-1772 (2021)>
=2021MNRAS.503.1753S 2021MNRAS.503.1753S (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies ; Morphology ; Rotational velocities ;
Velocity dispersion
Keywords: galaxies: disc - galaxies: evolution -
galaxies: kinematics and dynamics - dark matter
Abstract:
We investigate the shape of the rotation curves (RCs) of z∼1
star-forming galaxies (SFGs) and compare them with local SFGs. For
this purpose, we have used 344 galaxies from the K-band Multi-Object
Spectrograph (KMOS) for Redshift One Spectroscopic Survey (KROSS).
This sample covers the redshift range 0.57≤z≤1.04, the effective
radii 0.69≤Re[kpc]≤7.76, and the stellar masses
8.7≤log(M*[M☉])≤11.32. Using 3DBAROLO, we extract the H
α kinematic maps and corresponding RCs. The main advantage of
3DBAROLO is that it incorporates the beam smearing in the 3D
observational space, which provide us with the intrinsic rotation
velocity even in the low spatial resolution data. We have corrected
the RCs for pressure support, which seems to be a more dominant effect
than beam smearing in high-z galaxies. Only a combination of the three
techniques (3D-kinematic modelling + 3D-beam smearing correction +
pressure gradient correction) yields the intrinsic RC of an individual
galaxy. Further, we present the co-added and binned RCs constructed
out of 256 high-quality objects. We do not see any change in the shape
of RCs with respect to the local SFGs. Moreover, we notice a
significant evolution in the stellar-disc length (RD) of the
galaxies as a function of their circular velocity. Therefore, we
conclude that the stellar disc of SFGs evolves over cosmic time (from
z∼1) while the total mass stays constant (within ∼20kpc).
Description:
We release a catalogue of raw values (adopted from Harrison et al.,
2017, Cat. J/MNRAS/467/1965) and derived values for the 344 KROSS
star-forming galaxies used in the work.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 230 344 Catalogue
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See also:
J/MNRAS/467/1965 : KMOS Redshift One Spectroscopic Survey (Harrison+, 2017)
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- KID Object ID, Harrison et al., 2017,
Cat. J/MNRAS/467/1965 (KID)
5- 26 A22 --- Name Name of the Object in KROSS catalog
(Name) (3)
28 I1 --- Quality [1/3] Quality flag (Quality) (1)
30- 33 A4 --- FlagPA Position angle flag for the data
(Flag_PA) (2)
35- 44 F10.6 deg RAdeg Right ascension (J2000) (RA)
46- 55 F10.6 deg DEdeg Declination (J2000) (DEC)
57- 64 F8.6 --- z Redshift from Hα (redshift)
66- 73 F8.3 deg PA [] Position angle (PA)
75- 81 F7.4 deg Inc Inclination angle (INC)
83- 88 F6.2 mag HMAG Absolute H-band magnitude (Mag_H)
90- 99 F10.6 mag zmag z-band AB-magnitude (z_AB)
101-110 F10.6 mag Kmag K-band AB-magnitude (K_AB)
112-119 F8.6 [kpc] logRe Deconvolved continuum half-light radii,
R1/2, from the image (Re)
121-128 F8.6 [kpc] log(e_Re) Deconvolved continuum half-light radii,
R1/2, from the image error (Re_err)
130-138 F9.5 [km/s] logVout Rotation velocity computed at 6.4RD
(RD=0.59Re) (Vout)
140-149 F10.6 [km/s] log(e_Vout) Rotation velocity computed at 6.4RD
(RD=0.59Re) error (Vout_err)
151-159 F9.5 [km/s] logVPGCout PGC corrected rotation velocity computed
at 6.4RD (RD=0.59Re) (VPGC_out)
161-170 F10.6 [km/s] log(e_VPGCout) PGC corrected rotation velocity computed
at 6.4RD (RD=0.59Re) error
(VPGCouterr)
172-180 F9.5 [km/s] logSigma Weighted mean from intrinsic velocity
dispersion profile (Sigma)
182-191 F10.6 [km/s] log(e_Sigma) Weighted mean from intrinsic velocity
dispersion profile error (Sigma_err)
193-204 E12.6 [10-7W] logLHa Observed Hα luminosity (L_Ha)
206-217 E12.6 [10-7W] log(e_LHa) Observed Hα luminosity error
(LHaerr)
219-230 E12.6 [mW/m2] logFHa Observed aperture Hα flux (F_Ha)
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Note (1): Quality flag as follows:
1 = Hα detected, best moment map and RCs
2 = Hα detected, reasonably good moment map and RCs
3 = Hα detected but bad moment maps and RCs (discarded from the analysis)
Note (2): Position angle flag for the data as follows:
kin: Position angle derived from Barolo Kinematic modelling.
phot: Photometric position angle (Harrison et al., 2017, J/MNRAS/467/1965).
Note (3): From Harrison et al., 2017 (J/MNRAS/467/1965)
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History:
Copied at
https://dataverse.harvard.edu/dataset.xhtml?persistentId=doi:10.7910/DVN/MHRG4O
(End) Patricia Vannier [CDS] 28-Jan-2022