J/ApJ/891/144 CFHT dwarf satellite galaxies around LV hosts (Carlsten+, 2020)
Wide-field survey of dwarf satellite systems around 10 hosts in the Local
Volume.
Carlsten S.G., Greco J.P., Beaton R.L., Greene J.E.
<Astrophys. J., 891, 144 (2020)>
=2020ApJ...891..144C 2020ApJ...891..144C
ADC_Keywords: Galaxies, dwarf; Photometry; Optical; Colors; Redshifts;
Local group
Keywords: Dwarf galaxies ; Astronomical methods ; Galaxy formation
Abstract:
We present the results of an extensive search for dwarf satellite
galaxies around 10 primary host galaxies in the Local Volume (LV,
D<12Mpc) using archival CFHT/MegaCam imaging data. The hosts span a
wide range in properties, with stellar masses ranging from that of the
Large Magellanic Cloud to ∼3 times that of the Milky Way. The surveyed
hosts are: NGC 1023, NGC 1156, NGC 2903, NGC 4258, NGC 4565, NGC 4631,
NGC 5023, M51, M64, and M104. We detect satellite candidates using a
consistent semi-automated detection algorithm that is optimized for
the detection of low surface brightness objects. Depending on the
host, our completeness limit is Mg~-8 to -10 (assuming the distance of
the host). We detect objects with surface brightness down to
µ0,g∼26mag/arcsec2 at ≥90% completeness. The survey areas of
the six best-surveyed hosts cover most of the inner projected R<150kpc
area, which will roughly double the number of massive LV hosts
surveyed at this level of area and luminosity completeness, once
distances are measured for the candidates. The number of detected
candidates range from 1 around M64 to 33 around NGC 4258. In total,
155 candidates are found, of which 93 are new. While we defer an
analysis of the satellite luminosity functions of the hosts until
distance information is available for the candidates, we do show that
the candidates are primarily red, spheroidal systems with properties
roughly consistent with known satellites in the Local Group.
Description:
For each of the selected 10 galaxy hosts detailed in Section 2, we
download all available imaging data in the two bands used from the
CFHT data from the CADC archive. See Section 2.3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 96 10 Host properties
table3.dat 143 31 NGC 1023 dwarf sample
table4.dat 143 3 NGC 1156 dwarf sample
table5.dat 143 4 NGC 2903 dwarf sample
table6.dat 147 33 NGC 4258 dwarf sample
table7.dat 143 21 NGC 4565 dwarf sample
table8.dat 147 17 NGC 4631 dwarf sample
table9.dat 142 2 NGC 5023 dwarf sample
table10.dat 143 16 M51 dwarf sample
table11.dat 120 1 M64 dwarf sample
table12.dat 143 27 M104 dwarf sample
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See also:
B/cfht : Log of CFHT Exposures (CADC, 1979-)
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
VIII/77 : HI spectral properties of galaxies (Springob+, 2005)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
VII/258 : Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010)
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
J/A+AS/127/409 : New nearby dwarf galaxy cand. list (Karachentseva+ 1998)
J/A+AS/133/181 : BVI imaging of 20 irregular galaxies (Makarova+ 1998)
J/AJ/126/2152 : Cluster And Infall Region Nearby Survey. I (Rines+, 2003)
J/AJ/128/2170 : Hα imaging of irregular galaxies (Hunter+, 2004)
J/ApJS/173/185 : GALEX UV atlas of nearby galaxies (Gil de Paz+, 2007)
J/AJ/140/1093 : NGC7332/7339 & NGC1156 HI sources from AGES (Minchin+, 2010)
J/PASP/122/1397 : Spitzer Survey of Stellar Structure in Gal. (Sheth+, 2010)
J/AJ/144/4 : Dwarf galaxies in the Local Group (McConnachie+, 2012)
J/AJ/145/101 : Updated nearby galaxy catalog (Karachentsev+, 2013)
J/MNRAS/445/899 : LVL SEDs and physical properties (Cook+, 2014)
J/MNRAS/446/120 : ATLAS3D project. XXIX (Duc+, 2015)
J/ApJ/813/L15 : Dwarf galaxies in Fornax cluster from NGFS (Munoz+, 2015)
J/ApJ/833/167 : PAndAS view of Andromeda satellites. II. (Martin+, 2016)
J/ApJ/857/104 : Low surface brightness galaxies from HSC-SSP (Greco+, 2018)
J/MNRAS/479/5343 : Nearby dwarf galaxy in Magellanic bridge (Koposov+, 2018)
J/ApJ/868/55 : Large-scale structure of M31 halo. II. (McConnachie+, 2018)
J/ApJS/235/23 : LEGUS galaxies1 observations (Sabbi+, 2018)
J/A+A/629/A18 : Deep VI phot. of 15 dwarf galaxy candidates (Mueller+, 2019)
J/ApJ/878/18 : NGVS. XXIII. Nuclear star clusters (Sanchez-Janssen+, 2019)
http://www.cadc-ccda.hia-iha.nrc-cnrc.gc.ca/en/cfht/ : CFHT archive on CADC
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Host Galaxy name
10- 11 I2 h RAh Hour of right ascension (J2000)
13- 14 I2 min RAm Minute of right ascension (J2000)
16- 17 I2 s RAs Second of right ascension (J2000)
19 A1 --- DE- Sign of declination (J2000)
20- 21 I2 deg DEd Degree of declination (J2000)
23- 24 I2 arcmin DEm Arcminute of declination (J2000)
26- 27 I2 arcsec DEs Arcsecond of declination (J2000)
29- 33 F5.2 Mpc Dist [5.3/12] Distance
35 A1 --- r_Dist Reference on Dist (1)
37- 39 I3 km/s Vcirc [55/380] Velocity
41 A1 --- r_Vcirc Reference on Vcirc (1)
43- 48 F6.3 10+10Msun Ms [0.04/12] Stellar mass
50 A1 --- r_Ms Reference on Ms (1)
52- 56 F5.1 mag KsMag [-25/-19.3] Absolute Ks-band magnitude
58 A1 --- r_KsMag Reference on KsMag (1)
60- 62 I3 kpc Rvir [100/650] Virial radius
64 A1 --- r_Rvir Reference on Rvir (1)
66- 69 I4 km/s cz [379/1261] Velocity
71 A1 --- r_cz Reference on cz (1)
73- 82 A10 s Depth Median depth throughout the surveyed area in
Filt
84- 89 A6 % Cov Coverage fraction of the inner projected
150kpc area and the projected virial area
91- 93 A3 --- Filt Filter (g/i or g/r)
95- 96 I2 --- Ng Number of dwarf candidates for this
host; column added by CDS
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Note (1): Reference as follows:
a = Gil de Paz et al. (2007, J/ApJS/173/185)
b = Karachentsev et al. (2013, J/AJ/145/101)
c = Cook et al. (2014, J/MNRAS/445/899)
d = Erickson et al. (1999ApJ...515..153E 1999ApJ...515..153E)
e = Veron-Cetty & Veron (2010, VII/258)
f = Tilanus & Allen (1991A&A...244....8T 1991A&A...244....8T)
g = Rubin (1994AJ....107..173R 1994AJ....107..173R)
h = Jardel et al. (2011ApJ...739...21J 2011ApJ...739...21J)
i = NED Median
j = Kim et al. (2012PASJ...64...23K 2012PASJ...64...23K)
k = Humphreys et al. (2013ApJ...775...13H 2013ApJ...775...13H)
l = Radburn-Smith et al. (2011ApJS..195...18R 2011ApJS..195...18R)
m = McQuinn et al. (2016ApJ...826...21M 2016ApJ...826...21M)
n = Mould & Sakai (2008ApJ...686L..75M 2008ApJ...686L..75M)
o = McQuinn et al. (2016AJ....152..144M 2016AJ....152..144M)
p = Dressler & Sandage (1983ApJ...265..664D 1983ApJ...265..664D)
q = Abazajian et al. (2009, II/294)
r = Skrutskie et al. (2006, VII/233)
s = SIMBAD
t = Karachentsev et al. (2015AstBu..70..379K 2015AstBu..70..379K)
u = Cook et al. (2014, J/MNRAS/445/899)
v = Trentham & Tully (2009MNRAS.398..722T 2009MNRAS.398..722T)
w = Sheth et al. (2010, J/PASP/122/1397)
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Byte-by-byte Description of file: table[3-9].dat table1[012].dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Name of the dwarf candidate
14- 15 I2 h RAh Hour of right ascension (J2000)
17- 18 I2 min RAm Minute of right ascension (J2000)
20- 24 F5.2 s RAs Second of right ascension (J2000)
26 A1 --- DE- Sign of declination (J2000)
27- 28 I2 deg DEd Degree of declination (J2000)
30- 31 I2 arcmin DEm Arcminute of declination (J2000)
33- 36 F4.1 arcsec DEs Arcsecond of declination (J2000)
38- 43 A6 --- Type Morphological type (1)
45- 49 F5.2 mag gmag [9.4/23.4] CFHT/MegaCam g-band AB
magnitude; corrected for Galactic
extinction (2)
51- 54 F4.2 mag e_gmag [0.01/0.7]? Uncertainty on the gmag
56 A1 --- f_gmag [ds] Flag on photometry (3)
58- 62 F5.2 mag imag [12.2/23]? CFHT/MegaCam i-band AB
magnitude; corrected for Galactic
extinction (2)
64- 67 F4.2 mag e_imag [0.01/0.7]? Uncertainty on the imag
69- 72 F4.2 mag g-i [0.06/1.1]? g-i color index (2)
74- 77 F4.2 mag e_g-i [0.01/0.4]? g-i uncertainty
79- 82 F4.1 arcsec re [2.2/71.1]? Effective radius
84- 88 F5.2 arcsec e_re [0.04/19.1]? re uncertainty
90- 94 F5.2 mag/arcsec2 mu [21.7/28.4]? Surface brightness;
µe,r or µe,i
96- 99 F4.2 mag/arcsec2 e_mu [0.01/0.4]? mu uncertainty
101 A1 --- St Whether the galaxy was found in the visual
search of the star mask cutouts
103 A1 --- l_Dtrgb ? Upper limit flag on Dtrgb
104- 108 F5.2 Mpc Dtrgb [3.6/12.5]? Tip of RGB distance
110 A1 --- f_Dtrgb A: Not a TRGB distance but a brightest
star's distance
112 A1 --- r_Dtrgb Reference on Dtrgb (4)
114- 119 I6 km/s cz [135/109208]? Velocity
121 A1 --- r_cz Reference on cz (4)
123- 141 A19 --- OName Other name (s)
143- 147 A5 --- r_OName Reference on OName (4)
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Note (1): The types are estimated from the morphology shown in the CCD images.
Generally the type is chosen from "dI," "dE," or "dI/dE" for ambiguous
cases. A few of the larger detections are classified as "Im" or "Sdm".
Additionally, an "N" is included if the dwarf appears to be nucleated.
Here, we loosely define "nucleated" as having a bright point source
within 1"-2" of the center of a dwarf.
Note (2): All reported photometry are AB magnitudes in the CFHT/MegaCam
photometric system, unless otherwise stated. Photometry is corrected
for Galactic extinction using the values from
Schlegel+ (1998ApJ...500..525S 1998ApJ...500..525S) recalibrated by
Schlafly & Finkbeiner (2011ApJ...737..103S 2011ApJ...737..103S).
Note (3): Flag as follows:
d = R band photometry from Trentham & Tully (2009MNRAS.398..722T 2009MNRAS.398..722T)
in the g column
s = galaxies were either very non-Sersic or had some other issue with
the fitting and the photometry should be treated with caution
Note (4): References as follows:
a = Trentham & Tully (2009MNRAS.398..722T 2009MNRAS.398..722T)
b = Karachentsev et al. (2015AstBu..70..379K 2015AstBu..70..379K)
c = Irwin et al. (2009ApJ...692.1447I 2009ApJ...692.1447I)
d = Makarova & Karachentsev (1998, J/A+AS/133/181)
e = Springob et al. (2005, VIII/77)
f = Kim et al. (2011MNRAS.412.1881K 2011MNRAS.412.1881K)
g = Cohen et al. (2018ApJ...868...96C 2018ApJ...868...96C)
h = Spencer et al. (2014ApJ...788..146S 2014ApJ...788..146S)
i = Karachentseva & Karachentsev (1998, J/A+AS/127/409)
j = Karachentsev et al. (2007, J/PAZh/33/577)
k = SIMBAD
l = Binggeli et al. (1990A&A...228...42B 1990A&A...228...42B)
m = Sabbi et al. (2018, J/ApJS/235/23)
n = Rines et al. (2003, J/AJ/126/2152)
o = Tanaka et al. (2017ApJ...842..127T 2017ApJ...842..127T)
p = Dalcanton et al. (2009ApJS..183...67D 2009ApJS..183...67D)
q = Javanmardi et al. (2016A&A...588A..89J 2016A&A...588A..89J)
r = Sharina et al. (1999AstL...25..322S 1999AstL...25..322S)
s = Dalcanton et al. (1997AJ....114..635D 1997AJ....114..635D)
t = Caldwell (1983AJ.....88..804C 1983AJ.....88..804C)
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 20-Nov-2023