2002ApJ...579..270P

Query : 2002ApJ...579..270P

2002ApJ...579..270P - Astrophys. J., 579, 270-274 (2002/November-1)

Molecular gas in spiral galaxies: a new warm phase at large galactocentric distances.

PAPADOPOULOS P.P., THI W.-F. and VITI S.

Abstract (from CDS):

There is now strong evidence suggesting that the ¹²CO J=1-0 transition, widely used to trace H₂gas, significantly underestimates its mass in metal-poor regions. In spiral disks such regions are found at large galactocentric distances, where we show that any unaccounted H₂gas phase is likely to be diffuse (n∼5-20 cm^–3) and warmer (T_kin∼50-100 K) than the cool (T_kin∼15-20 K) CO-luminous one. Moreover, we find that a high value of the H₂formation rate on grains, suggested by recent observational work, can compensate for the reduction of the available grain surface in the metal-poor part of typical galactic disks and thus enhance this CO-poor H₂component, which may be contributing significantly to the mass and pressure of spiral disks beyond their optical radius.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Dark Matter - Galaxies: Individual: NGC Number: NGC 891 - Galaxies: ISM - ISM: Molecules

Errata: erratum vol. 583, p. 524 (2003)

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NGC 891	H2G	02 22 32.907	+42 20 53.95	11.08	10.81	9.93	7.86		~	1741	2

Query : 2002ApJ...579..270P

Basic data :

NGC 891 -- HII Galaxy

G (2009MNRAS,LEDA,...), Rad (B3,B3VLA,...), IR (IRAS,ISOSS,...), GiG (2007ApJ,[CHM2007]), smm (JCMTSE,JCMTSF), H2G (2011A&A), AG? (2020MNRAS), NIR (2MASS)

02 22 32.907 +42 20 53.95 (Infrared) [ ] C 2006AJ....131.1163S

02 19 24.157 +42 07 15.58 [ ]

140.382248 -17.415247 [ ]

V(km/s) 528 [~] / z(spectroscopic) 0.001763 [~] / cz 528.47 [~] (Opt) D 2009MNRAS.398..722T

SA(s)b? D 2013AJ....145..137K

12.30 2.45 22 (Opt) D 2003A&A...412...45P

U 11.08 [0.18] D 2007ApJS..173..185G

B 10.81 [0.18] D 2007ApJS..173..185G

V 9.93 [0.18] D 2007ApJS..173..185G

R 7.86 [~] D 2009MNRAS.398..722T

J 7.256 [0.017] C 2006AJ....131.1163S

H 6.362 [0.017] C 2006AJ....131.1163S

K 5.938 [0.017] C 2006AJ....131.1163S

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`NGC 891`	`ISOSS J02225+4221`	`PLCKERC -100 G140.41-17.39`	`Z 538-52`
`B3 0219+421`	`JCMTSE J022233.0+422050`	`PSCz Q02193+4207`	`Z 0219.4+4207`
`B3VLA 0219+421`	`JCMTSF J022233.0+422050`	`TC 454`	`[BTW2003] J0222+4219`
`BWE 0219+4207`	`LEDA 9031`	`TIC 293122165`	`[CAB95] IRAS F02194+4207`
`6C 021924+420732`	`2MASS J02223247+4220494`	`UGC 1831`	`[CHM2007] LDC 160 J022232.90+4220539`
`7C 021924.60+420736.00`	`2MASX J02223290+4220539`	`UZC J022233.4+422102`	`[M98c] 021924.3+420710`
`GB6 B0219+4207`	`MCG+07-05-046`	`VLSS J0222.5+4221`	`[NKB95] N0891`
`87GB 021924.1+420706`	`MITG J022231+4220`	`WB 0219+4207`	`[SLK2004] 299`
`IRAS F02194+4207`	`MY 021923.8+420734.9`	`WN B0219.4+4207`	`[TT2009] 2`
`IRAS 02193+4207`	`MY 021923.8+422113.3`	`ZOAG G140.38-17.42`	`[VDD93] 15`

References (1741 between 1850 and 2026) (Total 1741)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : NGC 891

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`NGC 891`	`BWE 0219+4207`	`IRAS F02194+4207`	`IRAS 02193+4207`	`2MASS J02223247+4220494`
`2MASX J02223290+4220539`	`MITG J022231+4220`	`UGC 1831`	`WN B0219.4+4207`

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