J/ApJ/857/144 Tidal features from RESOLVE survey & DECaLS images (Hood+, 2018)
The origin of faint tidal features around galaxies in the RESOLVE survey.
Hood C.E., Kannappan S.J., Stark D.V., Dell'Antonio I.P., Moffett A.J.,
Eckert K.D., Norris M.A., Hendel D.
<Astrophys. J., 857, 144 (2018)>
=2018ApJ...857..144H 2018ApJ...857..144H
ADC_Keywords: Galaxies, optical; Morphology; Surveys
Keywords: galaxies: evolution ; galaxies: interactions
Abstract:
We study tidal features around galaxies in the REsolved Spectroscopy
Of a Local VolumE (RESOLVE) survey. Our sample consists of 1048
RESOLVE galaxies that overlap with the DECam Legacy Survey, which
reaches an r-band 3σ depth of ∼27.9mag/arcsec2 for a
100arcsec2 feature. Images were masked, smoothed, and inspected for
tidal features such as streams, shells, or tails/arms. We find tidal
features in 17±2% of our galaxies, setting a lower limit on the true
frequency. The frequency of tidal features in the gas-poor
(gas-to-stellar mass ratio <0.1) subsample is lower than in the
gas-rich subsample (13±3% versus 19±2%). Within the gas-poor
subsample, galaxies with tidal features have higher stellar and halo
masses, ∼3x closer distances to nearest neighbors (in the same group),
and possibly fewer group members at fixed halo mass than galaxies
without tidal features, but similar specific star formation rates.
These results suggest tidal features in gas-poor galaxies are
typically streams/shells from dry mergers or satellite disruption. In
contrast, the presence of tidal features around gas-rich galaxies does
not correlate with stellar or halo mass, suggesting these tidal
features are often tails/arms from resonant interactions. Similar to
tidal features in gas-poor galaxies, tidal features in gas-rich
galaxies imply 1.7x closer nearest neighbors in the same group;
however, they are associated with diskier morphologies, higher star
formation rates, and higher gas content. In addition to interactions
with known neighbors, we suggest that tidal features in gas-rich
galaxies may arise from accretion of cosmic gas and/or gas-rich
satellites below the survey limit.
Description:
This project utilizes r-band images from both Data Release 3 of the
DECam Legacy Survey (DECaLS; Blum+ 2016AAS...22831701B) and the IAC
Stripe 82 Legacy Project (Fliri & Trujillo 2016, J/MNRAS/456/1359).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 63 2285 RESOLVE tidal feature catalog --
Updated version from erratum published in
2021 ApJ, 910, 165
--------------------------------------------------------------------------------
See also:
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
VII/250 : The 2dF Galaxy Redshift Survey (2dFGRS) (2dFGRS Team, 1998-2003)
VII/237 : HYPERLEDA. I. Catalog of galaxies (Paturel+, 2003)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
VII/259 : 6dF galaxy survey final redshift release (Jones+, 2009)
J/PASP/111/438 : Updated Zwicky catalog (UZC) (Falco+, 1999)
J/A+A/438/507 : Degree of lopsidedness for galaxies (Bournaud+, 2005)
J/AJ/130/2647 : Tidal features of 126 nearby red gal. (van Dokkum+, 2005)
J/ApJS/167/1 : Galaxy groups and clusters from SDSS (Berlind+, 2006)
J/ApJS/186/427 : Detailed morphology of SDSS galaxies (Nair+, 2010)
J/MNRAS/413/971 : Galaxy And Mass Assembly (GAMA) DR1 (Driver+, 2011)
J/AJ/142/170 : ALFALFA survey: α.40 HI source catalog (Haynes+, 2011)
J/A+A/534/A102 : AMIGA IX. Molecular gas properties (Lisenfeld+, 2011)
J/ApJ/765/28 : CFHTLS galaxies with faint tidal features (Atkinson+, 2013)
J/ApJ/777/42 : Kinematic and HI data for the NFGS (Kannappan+, 2013)
J/ApJ/769/82 : H2 masses in a broad sample of galaxies (Stark+, 2013)
J/MNRAS/446/120 : ATLAS3D project. XXIX (Duc+, 2015)
J/ApJ/810/166 : RESOLVE survey photometry catalog (Eckert+, 2015)
J/ApJ/812/89 : Environmental COntext (ECO) catalog (Moffett+, 2015)
J/ApJ/824/124 : Galaxy stellar and baryonic mass functions (Eckert+, 2016)
J/MNRAS/456/1359 : IAC Stripe 82 Legacy Project: Photometry (Fliri+, 2016)
J/ApJ/832/126 : RESOLVE survey: 21cm obs. with GBT & Arecibo (Stark+, 2016)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- RESOLVE RESOLVE identifier
8 I1 --- Conf [0/4]? Detection confidence class
(4=certain) (1)
12 I1 --- Type [0/2]? Type of feature seen (1=narrow,
2=broad) (2)
16- 25 F10.8 Msun/yr SFR [4e-05/5.5] Star formation rate
of each galaxy (3)
27- 37 F11.8 Msun/kpc2 mu-delta [5.3/10.6]? Morphological metric (4)
39- 49 F11.8 Mpc NNdist-kd [0.004/10.2] Distance to nearest
neighbor, kd-tree algorithm (5)
51- 63 F13.8 Mpc NNdist-proj [-999/20.7] Distance to nearest
neighbor, projected nearest neighbor (6)
--------------------------------------------------------------------------------
Note (1): Detection confidence class. This class follows the scheme of
Atkinson et al. (2013ApJ...765...28A 2013ApJ...765...28A). A blank or null value indicates
a RESOLVE survey galaxy not visually inspected in this study.
Code as follows:
4 = certain;
3 = probable;
2 = possible;
1 = hint;
0 = none.
Note (2): Type of feature seen. A blank or null value indicates a RESOLVE
survey galaxy not visually inspected in this study. --
1 = narrow;
2 = broad;
0 = Confidence is 0.
Note (3): Star formation rate of each galaxy calculated from the GALEX NUV
band using the calibration from Wilkins et al. (2012MNRAS.427.1490W 2012MNRAS.427.1490W).
Note (4): Morphological metric mu_Δ (Msun/kpc**2) defined in
Kannappan et al. (2013ApJ...777...42K 2013ApJ...777...42K).
Note (5): Distance to nearest neighbor (Mpc) calculated using the kd-tree
algorithm and suppressing peculiar velocities within groups
Note (6): Distance to nearest neighbor (Mpc) calculated as the projected
distance to the nearest neighbor in a cylindrical volume within cz=500km/s
of the main object. Equals -999 if no neighbor found within this volume.
--------------------------------------------------------------------------------
History:
From electronic version of the journal
06-May-2019: Insert into VizieR
27-Apr-2021: Table 2 changed for Table published in erratum
2021 ApJ, 910, 165
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 06-Mar-2019