J/AZh/84/579 Catalog of Class I methanol masers (Val'tts+, 2007) ================================================================================ A general catalog of Class I methanol masers. Val'tts I.E., Larionov G.M. =2007AZh....84..579V =2007ARep...51..519V ================================================================================ ADC_Keywords: Masers ; Radial velocities Abstract: A catalog of class I methanol masers discovered so far in the Southern and Northern hemispheres is presented. The catalog contains 160 sources. A statistical analysis shows that, within 2' of the telescope pointing (which corresponds approximately to the field of view of single antennas used in search surveys), 50% of class I methanol masers are associated with objects characteristic of active starforming regions: IRAS sources, ultracompact HII regions, and dense gas dust clouds, as well as OH and H2O interstellar masers. At the same time, bipolar out flows (which could play an active part in pumping the methanol masers) are associated with fewer than 25% of class I methanol masers. In 72% of cases, class I methanol masers are associated with class II methanol maser sources. These results suggest that methanol maser condensations are more appropriately classified by the transition type (that is, the pumping mechanism) than their association with other astronomical objects. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file catalog.dat 128 160 Catalog of class I methanol masers refs.dat 178 67 References -------------------------------------------------------------------------------- See also: J/AZh/71/37 : Thermal Methanol from 33 Clouds at 48GHz (Slysh+, 1994) J/AZh/72/22 : A 95GHz Survey of Methanol Masers (Valtts+, 1995) J/A+AS/110/81 : Methanol masers towards IRAS sources (van der Walt+ 1995) J/A+A/314/615 : Maps of the 36 GHz methanol emission (Liechti+, 1996) J/MNRAS/291/261 : Methanol maser of IRAS-selected sources (Walsh+ 1997) J/A+AS/134/115 : Medicina 6.7GHz methanol masers survey (Slysh+ 1999) J/A+A/432/737 : 6.7GHz Methanol Masers General Catalogue (Pestalozzi+, 2005) J/A+A/414/235 : OH maser emission from star forming regions (Szymczak+ 2004) J/MNRAS/359/1498 : Class I and class II methanol masers (Ellingsen+, 2005) Byte-by-byte Description of file: catalog.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- Seq [1/160] Sequential number 5- 11 F7.3 deg GLON Galactic longitude 13- 19 F7.3 deg GLAT Galactic latitude 21 A1 --- n_Seq [*] class II maser also observed (1) 23- 38 A16 --- Name Source name 40- 41 I2 h RAh Right ascension (B1950) 43- 44 I2 min RAm Right ascension (B1950) 46- 50 F5.2 s RAs Right ascension (B1950) 52 A1 --- DE- Declination sign (B1950) 53- 54 I2 deg DEd Declination (B1950) 56- 57 I2 arcmin DEm Declination (B1950) 59- 63 F5.2 arcsec DEs Declination (B1950) 65- 66 I2 GHz Freq Detection frequency (36, 44 or 95GHz) 68- 73 F6.2 Jy.km/s Fint ?=- Integrated flux 74 A1 --- n_Fint [*] * for VLA observations 76- 81 F6.2 km/s RV ?=- Radial velocity of the spectrum peak 82 A1 --- n_RV [b] b: line blended 84- 85 I2 --- r_RV Reference for radial velocity 87- 97 A11 --- IRAS IRAS name (Cat. II/125) 98 A1 --- n_IRAS [*] non-coincident IRAS source (2) 100-102 A3 --- UCHII [(yn|) ] Ultra-compact HII flag (3) 104-106 A3 --- H2O [(yn|) ] H2O maser flag (3) 108 A1 --- OH [(yn|) ] OH maser flag (3) 110-112 A3 --- CS [(yn|) ] CS maser flag (3) 113-115 A3 --- Bflow ([yn|) ] Bipolar flow flag (3) 116-120 F5.2 kpc Dist ? Kinematic distance to the star-forming region hosting the observed maser 121 A1 --- --- [/] 122-126 F5.2 kpc Dist2 ? Second kinematic distance to the star-forming region hosting the observed maser 127-128 I2 --- r_Dist ? Distance reference -------------------------------------------------------------------------------- Note (1): * if a class II maser is observed in that direction Note (2): * if the coordinates calculated +/-30" from the IRAS position for the declination differ from the coordinates of the methanol maser by more than the beam size of the telescope on which the maser was discovered (+/-1') Note (3): Flag for available information on the source: y = available data n = absence of a particular source, confirmed spectroscopically | = lack of information (y) = source identified with a methanol maser, but its coordinates differ by slightly more than the +/-2' limits. -------------------------------------------------------------------------------- Byte-by-byte Description of file: refs.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 --- Ref Reference number 4- 22 A19 --- BibCode BibCode 24- 43 A20 --- Aut Author's name 45-178 A134 --- Com Comments -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Patricia Vannier [CDS] 25-Feb-2008