J/ApJ/877/110 SPIRITS catalog of IR long period variables (Karambelkar+, 2019)
SPIRITS catalog of infrared variables: identification of extremely luminous
long period variables.
Karambelkar V.R., Adams S.M., Whitelock P.A., Kasliwal M.M., Jencson J.E.,
Boyer M.L., Goldman S.R., Masci F., Cody A.M., Bally J., Bond H.E.,
Gehrz R.D., Parthasarathy M., Lau R.M. (the SPIRITS Collaboration)
<Astrophys. J., 877, 110-110 (2019)>
=2019ApJ...877..110K 2019ApJ...877..110K (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant; Stars, variable; Infrared sources;
Magnitudes, absolute
Keywords: stars: AGB and post-AGB; stars: oscillations including pulsations
Abstract:
We present a catalog of 417 luminous infrared variable stars with
periods exceeding 250 days. These were identified in 20 nearby
galaxies by the ongoing SPitzer InfraRed Intensive Transients Survey
survey with the Spitzer Space Telescope. Of these, 359 variables have
M[4.5] (phase-weighted mean magnitudes) fainter than -12 and periods
and luminosities consistent with previously reported variables in the
Large Magellanic Cloud (LMC). However, 58 variables are more luminous
than M[4.5]=-12, including 11 that are brighter than M[4.5]=-13,
with the brightest having M[4.5]=-15.51. Most of these bright
variable sources have quasi-periods longer than 1000 days, including
four over 2000 days. We suggest that the fundamental period-luminosity
relationship, previously measured for the LMC, extends to much higher
luminosities and longer periods in this large galaxy sample. We posit
that these variables include massive asymptotic giant branch (AGB)
stars (possibly super-AGB stars), red supergiants experiencing
exceptionally high mass-loss rates, and interacting binaries. We also
present 3.6, 4.5, 5.8, and 8.0µm photometric catalogs for all
sources in these 20 galaxies.
Description:
Since 2014, the SPitzer InfraRed Intensive Transients Survey (SPIRITS;
Kasliwal+ 2017, J/ApJ/839/88) has been monitoring nearly 200 nearby
(d<30Mpc) galaxies (typically with cadences of 3-6 months) using
Spitzer/IRAC to (primarily) search for IR transients.
In this paper, we generate point-spread function (PSF) catalogs and
identify variables in the closest and most luminous galaxies in the
SPIRITS survey using a two-tiered selection strategy that includes the
9 galaxies within 1Mpc targeted by SPIRITS in addition to the 11
galaxies within 10Mpc targeted by SPIRITS with B-band absolute
magnitudes brighter than -20.6.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 20 Galaxy properties
table3.dat 200 417 Variable catalog
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See also:
B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)
II/94 : The Revised AFGL (RAFGL) Catalogue (Price+ 1983)
VII/280 : The Million Quasars (Milliquas) catalog (V5.2) (Flesch, 2017)
J/AJ/99/784 : IR photometry of LMC long-period variables (Hughes+ 1990)
J/A+AS/139/393 : Young Massive Star Clusters. II. (Larsen, 1999)
J/AJ/123/832 : C star population in NGC 6822 (Letarte+, 2002)
J/A+A/403/93 : Photometry of AGB stars in NGC 185 & NGC 147 (Nowotny+, 2003)
J/A+A/416/537 : UBVI & HST photometry of young stellar clusters (Larsen, 2004)
J/A+A/439/265 : Wolf-Rayet population in M83 (Hadfield+, 2005)
J/AJ/132/2268 : SAGE calibration stars (Meixner+, 2006)
J/ApJ/664/850 : Spitzer observations of stars in M33 (McQuinn+, 2007)
J/AJ/137/3139 : LMC SAGE. New variable evolved stars and YSOs (Vijh+, 2009)
J/AcA/59/239 : VI LCs of LMC long-period variables (Soszynski+, 2009)
J/A+A/506/1277 : Magellanic Cloud C/O stars modelisation (Groenewegen+, 2009)
J/ApJ/705/1364 : MIR catalog of point sources in M33 (Thompson+, 2009)
J/ApJ/715/1094 : Census of self-obscured massive stars (Khan+, 2010)
J/ApJ/723/1195 : SAGE AGB candidates (Riebel+, 2010)
J/ApJS/192/6 : A GALEX UV imaging survey of nearby galaxies (Lee+, 2011)
J/PAZh/37/34 : JHKLM light curves of WR 140 (Taranova+, 2011)
J/A+A/529/A25 : Photom. of star clusters in 5 nearby gal. (Silva-Villa+, 2011)
J/AcA/61/217 : VI LCs of SMC long-period variables (Soszynski+, 2011)
J/AJ/142/103 : Cool evolved stars in SAGE-SMC and SAGE-LMC (Boyer+, 2011)
J/A+A/538/A120 : A unified supernova catalogue (Lennarz+, 2012)
J/ApJ/753/71 : Mass-loss return from LMC evolved stars. VI. (Riebel+, 2012)
J/ApJS/203/8 : Optical SNR candidates in M83 (Blair+, 2012)
J/MNRAS/428/2216 : JHKs photometry of AGB stars in NGC 6822 (Whitelock+, 2013)
J/AJ/145/101 : Updated nearby galaxy catalog (Karachentsev+, 2013)
J/A+A/553/A87 : Star forming regions in HST galaxies sample (Drazinos+, 2013)
J/ApJ/772/107 : Giant molecular clouds in nearby gal. (Donovan Meyer+, 2013)
J/AJ/146/114 : Massive stars in M101. I. HST BVI photometry (Grammer+, 2013)
J/ApJ/800/51 : DUSTiNGS II. Metal-poor dusty AGB stars (Boyer+, 2015)
J/ApJS/219/42 : Spitzer point source catalogs in 7 nearby gal. (Khan+, 2015)
J/MNRAS/452/525 : M83 young star cluster light profiles (Ryon+, 2015)
J/MNRAS/452/910 : IC 1613 asymptotic giant branch variables (Menzies+, 2015)
J/ApJS/228/5 : Spitzer phot. of ∼1million stars in M31 & 15 gal. (Khan, 2017)
J/ApJ/839/83 : GMOS spectroscopic obs. of SNR cand. in M83 (Winkler+, 2017)
J/ApJ/839/88 : 14 unusual transients with Spitzer (SPRITEs) (Kasliwal+, 2017)
J/A+A/623/A110 : Gaia DR2. Variable stars in CMD (Gaia Collaboration+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Gal Galaxy name
9 A1 --- f_Gal Flag on Gal (1)
11- 13 I3 --- Ns [2/389] Number of SPIRITS sources
15- 17 I3 --- Nvar [0/189] Number of total variables
19- 20 I2 --- Nb [1/33]? Number of bright variables (2)
22- 26 F5.2 Mpc Dist [0.15/10.22] Distance (3)
28- 29 I2 --- Nep [9/38] Number of epochs
31- 37 E7.3 Msun Mass [5.5e+6/5.8e+11] Stellar mass (4)
39- 43 F5.1 mag Bmag [-21.8/-11] B-band magnitude (4)
45 A1 --- l_logSFR Limit flag on logSFR
46- 50 F5.2 [Msun/yr] logSFR [-7.8/0.7]? Log of stellar formation rate (4)
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Note (1): Flag as follows:
b = Indicates galaxies that are also included in the DUSTiNGS survey
(NGC 185, NGC 147, IC 1613 and WLM).
c = We exclude the variables detected in M32, because the number of epochs
for this galaxy is smaller than 10.
Note (2): The bright variables are those with M[4.5] brighter than -12
(which is close to the maximum luminosity of the LMC AGB sample
examined by Riebel+ 2010, J/ApJ/723/1195).
Note (3): The distances are taken from the Cosmicflows-3 catalog
(Tully+ 2017, J/AJ/152/50), with the exception of NGC 6946, where the
distance is from the Karachentsev+ (2013, J/AJ/145/101) catalog
because it does not have a Cosmicflow-3 distance.
Note (4): The stellar masses, B-band magnitudes, and integral star formation
rates (SFRs) are from Karachentsev+ (2013, J/AJ/145/101).
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- SPIRITS SPIRITS variable identifier
7- 16 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000)
18- 27 F10.6 deg DEdeg Declination in decimal degrees (J2000)
29- 35 A7 --- Gal Galaxy identifier
37- 42 F6.1 d LCdur [407.6/5340] Light curve duration
44- 47 I4 d Per [264/3123] Best fit period
49- 50 I2 --- Nlc [20/77] Number of point in light curve
52- 56 F5.1 --- rChi2 [0/766] Reduced χ2 of model
58- 64 F7.1 --- nrChi2 [3/17795] Null reduced χ2 of model
66- 69 F4.2 --- Score [0.8/1] Highest Lomb-Scargle score
71- 74 I4 d Per2 Second best fit period
76- 79 F4.2 --- Score2 Second highest Lomb-Scargle score
81- 88 F8.1 Lsun dL3.6 [163/179756] Delta 3.6 micron luminosity
90- 97 F8.1 Lsun dL4.5 [55/146463] Delta 4.5 micron luminosity
99-106 F8.1 Lsun mL3.6 [638/684671] Mean 3.6 micron luminosity
108-115 F8.1 Lsun mL4.5 [435/594379] Mean 4.5 micron luminosity
117-122 F6.2 mag 3.6Mag [-14.93/-7.36] Mean absolute 3.6 micron band
magnitude
124-129 F6.2 mag 4.5Mag [-15.51/-7.67] Mean absolute 4.5 micron band
magnitude
131-134 F4.2 mag e_3.6Mag [0.01/0.6] Uncertainty in 3.6mag
136-139 F4.2 mag e_4.5Mag [0.01/0.3] Uncertainty in 4.5mag
141-144 F4.2 mag Amp3.6 [0.1/9] Amplitude in 3.6 micron band
146-149 F4.2 mag Amp4.5 [0.1/4] Amplitude in 4.5 micron band
151-156 F6.2 mag ref3.6 [-14.6/-7.1] Reference absolute 3.6um
band magnitude
158-163 F6.2 mag ref4.5 [-15.1/-7.6] Reference absolute 4.5um
band magnitude
165-170 F6.2 mag ref5.8 [-17.1/-8.1]?=99 Reference absolute 5.8um
band magnitude
172-177 F6.2 mag ref8.0 [-17.6/-7.8]?=99 Reference absolute 8um
band magnitude
179-183 F5.2 mag DM [22/29.8] Distance modulus
185-191 A7 --- Qual Subjective classification (1)
193-200 A8 --- Ref Association reference code(s) (2)
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Note (1): We assigned a (subjective) quality to each variable identified that
is based on visual inspection of the light curves and periodograms as
follows:
gold = very likely to be a periodic variable;
silver = a possible periodic or quasi-periodic variable;
bronze = not, or unlikely to be, periodic.
Note (2): Reference as follows:
1 = Grammer & Humphreys 2013, J/AJ/146/114
2 = Page et al. 2014styd.confE..37P
3 = Donovan Meyer et al. 2013, J/ApJ/772/107
4 = Larsen 2004, J/A+A/416/537
5 = Lee et al. 2011, J/ApJS/192/6
6 = Ryon et al. 2015, J/MNRAS/452/525
7 = Flesch 2017, VII/280
8 = Vucetic et al. 2015, J/MNRAS/446/943
9 = Silva-Villa & Larsen 2011, J/A+A/529/A25
10 = Drazinos et al. 2013, J/A+A/553/A87
11 = Larsen 2011sca..conf...75L
12 = Blair et al. 2012, J/ApJS/203/8
13 = Hadfield et al. 2005, J/A+A/439/265
14 = Mora et al. 2009, J/A+A/501/949
15 = Larsen 1999, J/A+AS/139/393
16 = NASA & Heasarc, B/swift
17 = Khan et al. 2010, J/ApJ/715/1094
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 24-Nov-2020