2007A&A...470.1137M


C.D.S. - SIMBAD4 rel 1.7 - 2020.03.29CEST21:44:15

2007A&A...470.1137M - Astronomy and Astrophysics, volume 470, 1137-1156 (2007/8-2)

A new search for planet transits in NGC 6791.

MONTALTO M., PIOTTO G., DESIDERA S., DE MARCHI F., BRUNTT H., STETSON P.B., ARELLANO FERRO A., MOMANY Y., GRATTON R.G., PORETTI E., APARICIO A., BARBIERI M., CLAUDI R.U., GRUNDAHL F. and ROSENBERG A.

Abstract (from CDS):

Searching for planets in open clusters allows us to study the effects of dynamical environment on planet formation and evolution. Considering the strong dependence of planet frequency on stellar metallicity, we studied the metal rich old open cluster NGC 6791 and searched for close-in planets using the transit technique. A ten-night observational campaign was performed using the Canada-France-Hawaii Telescope (3.6m), the San Pedro Martir telescope (2.1m), and the Loiano telescope (1.5m). To increase the transit detection probability we also made use of the Bruntt et al. (2003A&A...410..323B) eight-nights observational campaign. Adequate photometric precision for the detection of planetary transits was achieved. Should the frequency and properties of close-in planets in NGC 6791 be similar to those orbiting field stars of similar metallicity, then detailed simulations foresee the presence of 2-3 transiting planets. Instead, we do not confirm the transit candidates proposed by Bruntt et al. (2003A&A...410..323B). The probability that the null detection is simply due to chance coincidence is estimated to be 3%-10%, depending on the metallicity assumed for the cluster. Possible explanations of the null-detection of transits include: (i) a lower frequency of close-in planets in star clusters; (ii) a smaller planetary radius for planets orbiting super metal rich stars; or (iii) limitations in the basic assumptions. More extensive photometry with 3-4m class telescopes is required to allow conclusive inferences about the frequency of planets in NGC 6791.

Abstract Copyright:

Journal keyword(s): Galaxy: open cluster and associations: individual: NGC 6791 - stars: planetary systems - techniques: photometric

Status at CDS:  

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3513 0
2 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2622 0
3 * eps Tau ** 04 28 36.9988174 +19 10 49.544603 5.42 4.54 3.53     G9.5IIICN0.5 540 1
4 NGC 2158 OpC 06 07 25 +24 05.8           ~ 243 0
5 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 2962 0
6 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1659 0
7 HD 149026b Pl 16 30 29.6184841164 +38 20 50.310893575           ~ 292 1
8 NGC 6253 OpC 16 59 05 -52 42.0     10.2     ~ 143 0
9 Cl* NGC 6791 SBG 1239 * 19 20 25.42 +37 47 45.2   20.299 19.241     ~ 1 0
10 Cl* NGC 6791 SBG 3567 * 19 20 38.6305960015 +37 45 33.177462465     17.635     ~ 3 0
11 V* V599 Lyr EP* 19 20 39.07 +37 47 25.7     17.51     ~ 3 0
12 V* V600 Lyr EP* 19 20 39.2550546363 +37 45 39.133410580     18.00     ~ 3 0
13 Cl* NGC 6791 SBG 4304 * 19 20 41.35 +37 43 28.2   18.669 17.795     ~ 1 0
14 Cl* NGC 6791 SBG 4300 * 19 20 41.38 +37 45 23.3   19.362 18.665     ~ 1 0
15 Cl* NGC 6791 SBG 4699 * 19 20 42.6737885542 +37 43 31.259074457   18.801 17.955     ~ 2 0
16 Cl* NGC 6791 SBG 6598 * 19 20 48.6455126863 +37 47 40.894019278     18.175     ~ 2 0
17 Cl* NGC 6791 SBG 7591 * 19 20 51.51 +37 48 58.7   19.512 18.553     ~ 1 0
18 NGC 6791 OpC 19 20 53 +37 46.3   10.52 9.5     ~ 861 0
19 Cl* NGC 6791 SBG 8279 * 19 20 53.4 +37 48 14     18.907     ~ 3 0
20 V* V618 Lyr EB* 19 20 55.39 +37 47 23.2         16.18 ~ 4 0
21 KIC 2438061 EB* 19 21 06.4750353191 +37 47 27.621095278   18.84 17.89 17.142   ~ 15 0
22 HD 209458b Pl 22 03 10.7729598762 +18 53 03.548248479           ~ 1437 1

    Equat.    Gal    SGal    Ecl

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2020.03.29-21:44:15

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