45mLegacyCOMINGCOMulti-lineImagingofNearbyGalaxies

SORAI,KazuoHokkaidoUniv./Univ.ofTsukuba

andCOMINGers

ALMA/45m/ASTEUsersMeeting2017Dec.27th,2017

COMINGers

(*：graduated)

HokkaidoUniv.Sorai,K.Umie,M.＊Segawa,Y.＊Tashiro,T.＊Kishida,N.＊Yajima,Y.Shibata,S.

NAOJMiyamoto,Y.Kaneko,H.

Univ.ofTsukubaKuno,N.Nakai,N.Watanabe,Y.Hatakeyama,T.＊Tanaka,T.Tomiyasu,Y.＊Kawahara,Y.＊Sato,Y.Yasuda,A.Kita,S.Komatsuzaki,R.(Sorai,K.)

OsakaPrefectureUniv.Muraoka,K.Baji,H.＊Takeda,M.＊Yanagitani,K.＊Kuroda,M.

Kwansei GakuinUniv.Salak,D.Noma,Y.Seta,M.

ISASMorokuma,K.

YamaguchiUniv./NAOJMatsumoto,N.KagoshimaUniv.Nakanishi,H.Saita,C.＊Ueno,S.Ezoe,S.＊

AcademiaSinica InstituteAstronomyandAstrophysicsPAN,H-A.

NagoyaUniv.Takeuchi,T.T.Yoda,M.

TokyoUniv.ofScienceOi,N.

1.BACKGROUND

Moleculargasandstarformation

• moleculargasinthecontextofgalaxyevolution

• whathappenswithinagalaxy?

• lackofmoleculargasinformation

2.0

1.0

0.0

-1.0

-2.0

8.09.010.011.012.0logMstar (M☉)

logSFR(M☉yr

-1)

(basedonSchiminovich,etal.2007)

RecentCOsurveys

• COLDGASS(Saintonge+11)>300galaxies,pointing

• EDGE(theExtragalacticDatabaseforGalaxyEvolutionsurvey)(Bolatto+17)126galaxies,CARMA

COLDGASS

EDGE

2.SAMPLES&OBSERVATIONS

Original&observedsamples

• targets:238FIRbright galaxies• morphology

observed

notobserved

• distance

01020304050distance(Mpc)

60

40

20

0

60

40

20

0

numbe

r

E S0+

S0/a

Sa Sab

Sb Sbc

Sc Scd

Sd Sdm

Sm Im I0 Pec

n.c.

morphology

observed

notobserved

Observations

• OTF withthe45-mtelescope w/FOREST• 2015,Apr.– 2017,Mar.(~1,320hr)• 12CO,13CO,C18O J=1–0 (simultaneously)• Dv =10kms-1

• DTA* =30mK• mappingarea:70%ofD25

• observedtargets:127 galaxies(~53%oftheoriginalsamples)

Auto-ReductionTool(COMINGART)rawdata split scaling auto-flagging

(checkingspurious)

basketweaving

checkingbaselineranges cuttingedgesofspectra

checkingrms auto-rebase rotation finaldatacube

baselineranges(assumed)FFT&salvagefactor(parameter)

selectingsalvagefactor&maskwidths

x,y,individually changebaselineranges

3.RESULTS

Moleculargasinbarredspirals

• COMING(12CO&13COJ=1–0)+JCMT(12COJ=3–2)&RADEX

• lessdenseandlargevelocitywidthinbar

• Yajima,etal.,inprep. 4080120160DV (kms-1)

600

400

200

0n(H 2)(cm

-3) arm

barendbar

open N3627filled N4303

NGC3627 NGC4303

Moleculargasandstarformation

• COMING(12COJ=1–0)+IRAM(12COJ=2–1)• 12COJ=2–1/J=1–0(≡R2–1/1–0)– higherinarmsthaninter-armregion– relatedtostarformationrate

• Komatsuzaki &Kuno,thismorning

12COJ=1–0 R2–1/1–0 WISE22µm

NGC628

Derivingstellarmass

• usingWISE3.4µmbecausewecangetdataofthewholetargets

• butmanyGalacticstarsineachfield...• auto-maskingtoolhasbeencompleted,thensoonderivingstellarmass

4.STATUS&NEARFUTUREPLAN

Observations

• observationsofnot-observedtargets– we’dliketocompleteouroriginaltargets– inespecial,galaxieswithlargeappearance

• multi-transitionobservations(J=2–1,J=3–2)– derivingphysicalpropertiesmoreprecisely

• high-resolutionobservationswithALMA– whathappensinGMA– GMCscale

Scientificactivity

• sub-workinggroups– distribution&dynamics(DD):Miyamoto– physicalproperties(PP):Muraoka– environmentaleffect(EE):Kaneko– welcometojoinusnow,pleasecontactus

• planningaworkshop“COMING2018”

PublicationPlan1. NGC2903:Muraoka+2016,PASJ,68,892. NGC2976:Hatakeyama+2017,PASJ,69,673. overview:Sorai+,inprep.4. distribution&dynamics:Miyamoto+,inprep.5. kinematics:Salak+,inprep.6. SFE:Muraoka+,inprep.7. conversionfactor:Yasuda+,inprep.8. groupgalaxies:Kaneko+,inprep.9. NGC4303:Yajima+,inprep.10. resolvedK-Srelation:Yoda+,inprep.

5.SUMMARY

• COMINGobserved127galaxies• datareductionof>110galaxieshasbeencompleted

• achievementof53%,butstackinganalysismayhelpus

• nowcompilingourCOdataandtryingtoderivestellarmassandstarformationrate

• movingtoobservation&reductionphasetoscientificactivityphase